| uptake and transformation of phenol and chlorophenols by hairy root cultures of daucus carota, ipomoea batatas and solanum aviculare. | hairy root cultures of daucus carota l., ipomoea batatas l. and solanum aviculare forst were investigated for their susceptibility to the highly toxic pollutants phenol and chlorophenols and for the involvement of inherent peroxidases in the removal of phenols from liquid media. roots of d. carota grew normally in medium containing 1000 micromol l(-1) of phenol, whilst normal growth of roots of i. batatas and s. aviculare was only possible at levels up to 500 micromol l(-1). in the presence of c ... | 2006 | 16364403 |
| two sweetpotato adp-glucose pyrophosphorylase isoforms are regulated antagonistically in response to sucrose content in storage roots. | the transcriptional regulation of adp-glucose pyrophosphorylase (agpase) genes in detached leaves in response to exogenous sucrose has been investigated earlier; however the effects of endogenous sucrose on agpase gene transcription in leaves or starch-accumulating tissues have not yet been determined. we therefore have investigated the relationship between endogenous sucrose content in the storage tissues of sweetpotato (ipomoea batatas cv. yulmi) and the rate of transcription of the two sweetp ... | 2006 | 16338103 |
| resistance of sweetpotato genotypes to adult diabrotica beetles. | production of sweetpotatoes, ipomoea batatas (l.) lam. (convolvulaceae), is limited by several insect pests, including diabrotica spp. (coleoptera: chrysomelidae), and new integrated pest management (ipm) techniques for this crop are needed. host plant resistance is one attractive approach that fits well into ipm programs. a host plant resistance research program typically depends on reliable bioassay procedures to streamline evaluation of germplasm. thus, a bioassay technique was developed for ... | 2007 | 17461084 |
| rnai-based gene silencing through dsrna injection or ingestion against the african sweet potato weevil cylas puncticollis (coleoptera: brentidae). | rna interference (rnai) technology can potentially serve as a suitable strategy to control the african sweet potato weevil cylas puncticollis (spw), which is a critical pest in sub-saharan africa. important prerequisites are required to use rnai in pest control, such as the presence of an efficient rnai response and the identification of suitable target genes. | 2017 | 27299308 |
| estrogenic effect of yam ingestion in healthy postmenopausal women. | yam (dioscorea) has been used to treat menopausal symptom folklorically. this study was to investigate the effects of yam ingestion on lipids, antioxidant status, and sex hormones in postmenopausal women. | 2005 | 16093400 |
| purple sweet potato anthocyanin attenuates fat-induced mortality in drosophila melanogaster. | a high fat diet induces the accumulation of lipid hydroperoxides (lpo), accelerates the ageing process and causes a greater mortality in drosophila melanogaster. purple sweet potato is rich in antioxidant anthocyanin. the purpose of the present study was to examine if supplementation of purple sweet potato anthocyanin (pspa) could reduce the mortality of fruit flies fed a high-fat diet. results showed that the mean lifespan of fruit flies was shortened from 56 to 35days in a dose-dependent manne ... | 2016 | 27329928 |
| isolation and primary structure of proteinase inhibitors from erythrina variegata (linn.) var. orientalis seeds. | the kunitz-type trypsin inhibitors, etia and etib, and chymotrypsin inhibitor eci were isolated from the seeds of erythrina variegata. the proteins were extracted from a defatted meal of seeds with 10 mm phosphate buffer, ph 7.2, containing 0.15 m nacl, and purified by deae-cellulose and q-sepharose column chromatographies. the stoichiometry of trypsin inhibitors with trypsin was estimated to be 1:1, while that of chymotrypsin inhibitor with chymotrypsin was 1:2, judging from the titration patte ... | 1992 | 1369077 |
| inclusion levels of sweet potato root meal in the diet of broilers i. effect on performance, organ weights, and carcass quality. | the amount of corn available for animal and poultry feed has been unpredictable in recent years due to the increased use of corn for ethanol production. as a consequence, there has been an increase in the price of feed, chicken, and chicken products. researchers are exploring alternative feed sources to substitute for corn in poultry ration. this study evaluated the performance and carcass quality of broilers fed diets containing sweet potato root meal (sprm). after a complete nutrient analysis ... | 2015 | 25840965 |
| daily dietary selenium intake in a high selenium area of enshi, china. | enshi is a high selenium (se) region in hubei, china, where human selenosis was observed between 1958 and 1963. this study investigated the daily dietary se intake of residents in shadi, a town located 72 km northeast of enshi city, to assess the risk of human selenosis in the high se area. foods consumed typically by the local residents and their hair samples were analyzed for total se concentration. concentrations of se in different diet categories were as follows: cereals: 0.96 ± 0.90 mg kg(- ... | 2013 | 23462585 |
| nutrition and burrowing energetics of the cape mole-rat georychus capensis. | at 22°c the resting oxygen consumption of g. capensis is 1.13±0.05 cm(3)o2·g(-1)·h(-1) (mean± s.e.). in loose sandy soil the burrowing metabolic rate was approximately three times that of resting (3.41±0.19 cm(3)o2·g(-1)· h(-1)). rate of oxygen consumption while burrowing bears a linear relationship with rate of burrowing. the equation of the regression line describing this relationship was used to construct a model for calculating energy expenditure of burrowing in free-living mole-rats. the di ... | 1985 | 28310816 |
| sweet potato (ipomoea batatas) attenuates diet-induced aortic stiffening independent of changes in body composition. | we hypothesized a sweet potato intervention would prevent high fat diet-induced aortic stiffness, which would be associated with decreased arterial oxidative stress and increased mitochondrial uncoupling. young (8-week old) c57bl/6j mice were randomly divided into 4 groups: low fat (lf, 10% fat), high fat (hf, 60% fat), low fat sweet potato (lfsp, 10% fat containing 260.3 ug/kcal sp), or high fat sweet potato diet (hfsp, 60% fat containing 260.3 ug/kcal sp) for 16 weeks. compared to lf and lfsp, ... | 2017 | 28288284 |
| effect of drying conditions on properties, pigments and antioxidant activity retentions of pretreated orange and purple-fleshed sweet potato flours. | pigmented sweet potatoes (sps) are outstanding sources of anthocyanin, β-carotene and other color-related phytonutrients. however, fresh sp roots are highly perishable and difficult to store. to reduce losses and extend their uses, fresh sp could be converted into flour. sp cultivars with deep purple (phichit 65-3) and orange-fleshed (t101) colors newly developed in thailand were studied. the influence of drying methods on physico-chemical properties, anthocyanin, β-carotene and antioxidant acti ... | 2016 | 27413208 |
| proteomic approach reveals that starch degradation contributes to anthocyanin accumulation in tuberous root of purple sweet potato. | a comparative proteomic approach was carried out to investigate anthocyanin biosynthesis in the tuberous roots of yellow sweet potato (ysp) and purple sweet potato (psp) cultivars. more than 800 proteins were reproducibly detected through two-dimensional electrophoresis (2-de), of which 50 proteins with 39 more and 11 less accumulated in psp were identified through matrix-assisted laser desorption ionization-time of flight/time of flight mass spectrometry (maldi-tof/tof-ms). most of the analyzed ... | 2016 | 26957144 |
| adding sweet potato vines improve the quality of rice straw silage. | rice straw and sweet potato vines are the main by-products of agricultural crops, and their disposal creates problems for the environment in the south of china. in order to establish an easy method for making rice straw silage successfully, experiments were conduct to evaluate fermentation quality and nutritive value of rice straw silages ensiled with or without sweet potato vine. paddy rice straw (pr) and upland rice straw (up) were ensiled alone or with sweet potato vines (sp) by a ratio of 1: ... | 2017 | 27549923 |
| degradation of distillery lees (shochu kasu) by cellulase-producing thraustochytrids. | single cell oils produced by oleaginous microorganisms have attracted increasing interests as a petroleum alternative energy. marine eukaryotes, thraustochytrids were heterotrophic, and can grow rapidly and accumulate large amount of lipids containing functional fatty acids, such as docosahexaenoic acid (dha) in their cells body. in this investigation, thraustochytrids isolated from marine environment were cultured in the medium containing an industrial waste and an unused resource, distillery l ... | 2017 | 27928143 |
| purple sweet potato attenuate weight gain in high fat diet induced obese mice. | purple sweet potato (psp) is widely grown in asia and considered as a healthy vegetable. the objective of the current study was to determine the anti-obesity effect of the psp on high fat diet induced obese c57bl/6j mice. the mice were administrated with high fat diet supplemented with the sweet potato (sp) or psp at the concentration of 15% and 30% for 12 wk, respectively. the results showed that the supplementation of sp or psp at 30% significantly ameliorated high fat diet induced obesity and ... | 2017 | 28135399 |
| carotenoids and β-carotene in orange fleshed sweet potato: a possible solution to vitamin a deficiency. | the present study, in line with a plant-food-based approach to address vitamin a deficiency, reports the analysis of total carotenoids, and trans- and cis-β-carotenes, in different varieties of raw and boiled orange-fleshed sweet potatoes (ofsp). carotenoids were isolated using acetone-petroleum ether extraction followed by spectrophotometric determination. trans- and cis-β-carotenes were analyzed by reversed-phase hplc method using a mobile phase containing acetonitrile:methanol:2-propanol in t ... | 2016 | 26776017 |
| a leaf-inhabiting endophytic bacterium, rhodococcus sp. kb6, enhances sweet potato resistance to black rot disease caused by ceratocystis fimbriata. | rhodococcus species have become increasingly important owing to their ability to degrade a wide range of toxic chemicals and produce bioactive compounds. here, we report isolation of the rhodococcus sp. kb6, which is a new leaf-inhabiting endophytic bacterium that suppresses black rot disease in sweet potato leaves. we determined the 7.0 mb draft genome sequence of kb6 and have predicted 19 biosynthetic gene clusters for secondary metabolites, including heterobactins, which are a new class of si ... | 2016 | 26767576 |
| the predatory mite phytoseiulus macropilis (acari: phytoseiidae) occurring on sweet potato (ipomoea batatas) plants in diamantina, minas gerais state, brazil. | | 2014 | 25296218 |
| abundant storage protein depletion from tuber proteins using ethanol precipitation method: suitability to proteomics study. | high-abundance proteins (haps) hamper in-depth proteome study necessitating development of a haps depletion method. here, we report a novel ethanol precipitation method (epm) for haps depletion from total tuber proteins. ethanol showed a dose-dependent effect on depletion of sporamin from sweet potato and patatin from potato tubers, respectively. the 50% ethanol was an optimal concentration. 2de analysis of epm-prepared sweet potato proteins also revealed enrichment of storage proteins (sps) in ... | 2015 | 25689267 |
| the influence of deep frying using various vegetable oils on acrylamide formation in sweet potato (ipomoea batatas l. lam) chips. | the objective of this study was to evaluate the precursors of acrylamide formation in sweet potato (sp) (ipomoea batatas l. lam) chips and to determine the effect of different types of vegetable oils (vos), that is, palm olein, coconut oil, canola oil, and soya bean oil, on acrylamide formation. the reducing sugars and amino acids in the sp slices were analyzed, and the acrylamide concentrations of sp chips were measured. sp chips that were fried in a lower degree of unsaturation oils contained ... | 2014 | 24344977 |
| processing treatments for mitigating acrylamide formation in sweetpotato french fries. | acrylamide formation in sweetpotato french fries (spff) is likely a potential health concern as there is an increasing demand for good-quality fries from carotene-rich sweetpotatoes (sp). this is the first report on acrylamide formation in spff as affected by processing methods. acrylamide levels in spff from untreated sp strips fried at 165 °c for 2, 3, and 5 min were 124.9, 255.5, and 452.0 ng/g fresh weight, which were reduced by about 7 times to 16.3, 36.9, and 58.3 ng/g, respectively, when ... | 2014 | 24328312 |
| fermentation and quality of yellow pigments from golden brown rice solid culture by a selected monascus mutant. | a single peak (λmax 370) yellow pigment-producing mutant derived from monascus sp. tistr 3179 was used for the pigment production in solid rice culture. various factors affecting yellow tones were investigated. hom-mali rice variety was the best amongst five thai local varieties used for fungus culture. it was also better than corn, mungbean, soybean, potato, sweet potato, or cassava tubers. the moisture content and temperature were the key environmental factors affecting the color tones of crea ... | 2013 | 23912113 |
| ileal digestibility of amino acids of cassava, sweet potato, cocoyam and erythrina foliages fed to growing pigs. | ileal digestibility in growing pigs fed starch-based diets with inclusion of four tropical leaves in a meal form was studied in a 5 × 5 latin square design. five diets were formulated with only casein as protein source in the basal diet (cas), and casein plus dry cassava (ca) leaves, casein plus dry sweet potato (sp) leaves, casein plus dry cocoyam (co) leaves and casein plus erythrina (er) leaves in the other four diets. all diets contained the same amount of cp (14%), either provided by only c ... | 2012 | 22436274 |
| dietary sweet potato (ipomoea batatas l.) leaf extract attenuates hyperglycaemia by enhancing the secretion of glucagon-like peptide-1 (glp-1). | 'suioh', a sweet potato (ipomoea batatas l.) cultivar developed in japan, has edible leaves and stems. the sweet potato leaves contain polyphenols such as caffeoylquinic acid (cqa) derivatives. it has multiple biological functions and may help to regulate the blood glucose concentration. in this study, we first examined whether sweet potato leaf extract powder (sp) attenuated hyperglycaemia in type 2 diabetic mice. administration of dietary sp for 5 weeks significantly lowered glycaemia in type ... | 2014 | 25066255 |
| rice and bean targets for biofortification combined with high carotenoid content crops regulate transcriptional mechanisms increasing iron bioavailability. | iron deficiency affects thousands of people worldwide. biofortification of staple food crops aims to support the reduction of this deficiency. this study evaluates the effect of combinations of common beans and rice, targets for biofortification, with high carotenoid content crops on the iron bioavailability, protein gene expression, and antioxidant effect. iron bioavailability was measured by the depletion/repletion method. seven groups were tested (n = 7): pontal bean (pb); rice + pontal bean ... | 2015 | 26610564 |
| anti-inflammatory and anticancer activities of taiwanese purple-fleshed sweet potatoes (ipomoea batatas l. lam) extracts. | purple-fleshed sweet potato (pfsp) (ipomoea batatas l. lam) has been known to possess high amount of anthocyanins which contribute to its antioxidant activity. however, a few reports are available concerning its anti-inflammatory and anticancer properties. in this study, pfsp "tainung 73," which is locally grown in taiwan, was steamed and extracted using acidified ethanol ph 3.5 under 80°c. two kinds of crude anthocyanins extracts were obtained, namely, sp (steamed, peeled) and snp (steamed, no ... | 2015 | 26509161 |
| indirect determination of sulfite using a polyphenol oxidase biosensor based on a glassy carbon electrode modified with multi-walled carbon nanotubes and gold nanoparticles within a poly(allylamine hydrochloride) film. | the modification of a glassy carbon electrode with multi-walled carbon nanotubes and gold nanoparticles within a poly(allylamine hydrochloride) film for the development of a biosensor is proposed. this approach provides an efficient method used to immobilize polyphenol oxidase (ppo) obtained from the crude extract of sweet potato (ipomoea batatas (l.) lam.). the principle of the analytical method is based on the inhibitory effect of sulfite on the activity of ppo, in the reduction reaction of o- ... | 2011 | 22099673 |
| recombinant purple acid phosphatase isoform 3 from sweet potato is an enzyme with a diiron metal center. | purple acid phosphatases (paps) from sweet potato (sp) have been classified on the basis of their primary structure and the dinuclear metal center into isoforms sppap1 [fe(iii)-zn(ii)] and sppap2 [fe(iii)-mn(ii)]; for sppap3 only the cdna is known. with the aim of unraveling the character of the dinuclear metal center we report here the characterization of this isoform at the protein level. we cloned sppap3 cdna in a baculovirus and overexpressed this enzyme in sf9 insect cells. preparation of r ... | 2006 | 16623702 |
| biosensor based on paraffin/graphite modified with sweet potato tissue for the determination of hydroquinone in cosmetic cream in organic phase. | an organic-phase biosensor based on paraffin/graphite modified with sweet potato (ipomoea batatas (l.) lam.) tissue as the source of peroxidase was developed and used for determining hydroquinone in cosmetic creams. this enzyme in the presence of hydrogen peroxide catalyses the oxidation of hydroquinone to p-quinone which electrochemical reduction back to hydroquinone was obtained at a peak potential of -0.22 v. the recovery of hydroquinone from two samples ranged from 99.1 to 104.1% and a recti ... | 2000 | 18968026 |
| site-specific phosphorylation of l-form starch phosphorylase by the protein kinase activity from sweet potato roots. | a 78-amino acid insertion (l78) is found in the low-affinity type (l-form) of starch phosphorylase (l-sp, ec 2.4.1.1). this insertion blocks the starch-binding site on the l-sp molecule, and it decreases the binding affinity of l-sp toward starch. the computational analysis of the amino acid sequence on l78 predicts several phosphorylation sites at its ser residues. indeed, from the immunoblotting results using antibodies against phosphoamino acids, we observed that the purified l-sp from mature ... | 2006 | 16151850 |
| spectrophotometric determination of methyldopa and dopamine in pharmaceutical formulations using a crude extract of sweet potato root (ipomoea batatas (l.) lam.) as enzymatic source. | a rapid, precise and low cost spectrophotometric method is proposed for the determination of methyldopa and dopamine in pharmaceutical formulations. the crude extract of sweet potato root (ipomoea batatas (l.) lam.) was used as an enzymatic source of polyphenol oxidase (ppo; ec.1.14.18.1). this enzyme catalyses the oxidation of catecholamines to the corresponding methyldopaquinone and dopaminequinone. those compounds are converted by a rapid spontaneous auto-oxidation to methyldopachrome and dop ... | 1998 | 18967177 |
| [a new species of thrip, genus frankliniella (group cephalica; thysanoptera: thripidae) from costa rica]. | a new species of the frankliniella cephalica group, from central costa rica, is described under the name "frankliniella morerai n.sp.". it is closely related to frankliniella sandovalensis. both species have translucent bodies, but the new species can be distinguished by these characteristics: setae io ii in position 1/2, a complete comb on abdominal segment viii, antennal segments without coloration and setae po iv longer. it was found in low density in crops of chilli, tomato, lettuce, sweet p ... | 2007 | 17354432 |
| construction and analytical application of a biosensor based on stearic acid-graphite powder modified with sweet potato tissue in organic solvents. | a biosensor based on stearic acid-graphite powder modified with sweet potato (ipomoea batatas (l.) lam.) tissue as peroxidase source was constructed and applied in organic solvents. several parameters were studied to evaluate the performance of this biosensor such as stearic acid-graphite powder and tissue composition, type and concentration of supporting electrolyte, organic solvents, water/organic solvent ratio (% v/v) and hydrogen peroxide concentration. after selection of the best conditions ... | 2000 | 11227501 |
| identification of the maize amyloplast stromal 112-kd protein as a plastidic starch phosphorylase. | amyloplast is the site of starch synthesis in the storage tissue of maize (zea mays). the amyloplast stroma contains an enriched group of proteins when compared with the whole endosperm. proteins with molecular masses of 76 and 85 kd have been identified as starch synthase i and starch branching enzyme iib, respectively. a 112-kd protein was isolated from the stromal fraction by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and subjected to tryptic digestion and amino acid sequence a ... | 2001 | 11154342 |
| new skeletal sesquiterpenoids, caprariolides a-d, from capraria biflora and their insecticidal activity. | four structurally novel isomeric sesquiterpenes have been isolated from the aerial parts of capraria biflora. caprariolides a (1), b (2), c (3), and d (4) have been determined by nmr spectroscopy experiments to be the (3s,5s,9r), (3r,5s,9r), (3r,5r,9r), and (3s,5r, 9r) isomers of 7-(furan-3'-yl)-3,9-dimethyl-1-oxaspiro[4. 5]dec-6-en-2-one, respectively. both 1 and 2 were found to exhibit insecticidal activity against adult cylas formicarius elegantulus, one of the most destructive insect pests o ... | 2000 | 11087595 |
| phytotoxic components produced by pathogenic fusarium against morning glory. | a pathogenic isolate of fusarium, f. oxysporum f. sp. batatas o-17 (pf), causes wilt disease in leaf etiolation in sweet potato (ipomoea batatas) and morning glory (ipomoea tricolor). extracts from pf cultures were screened for phytotoxic components using a growth inhibition assay with morning glory seedlings. the extracts were fractionated using differential solvent extraction and two active compounds, ergosterol and fusalanipyrone, were isolated from the less-polar fraction. growth inhibition ... | 2013 | 16402546 |
| regulation of the catalytic behaviour of l-form starch phosphorylase from sweet potato roots by proteolysis. | starch phosphorylase (sp) is an enzyme used for the reversible phosphorolysis of the alpha-glucan in plant cells. when compared to its isoform in an animal cell, glycogen phosphorylase, a peptide containing 78 amino acids (l78) is inserted in the centre of the low-affinity type starch phosphorylase (l-sp). we found that the amino acid sequence of l78 had several interesting features including the presence of a pest region, which serves as a signal for rapid degradation. indeed, most l-sp molecul ... | 2002 | 11975723 |
| characterization of the cellulose-binding ability of geotrichum sp. m111 cells and its application to dehydration of the distilled waste of sweet potato shouchu. | the cellulose-binding ability of geotrichum sp. m111 cells was investigated by the micro-tube method which gives an indication of the binding ability of m111 cells. the optimum ph value and temperature were 3-7 and below 50 degrees c, respectively, from measurement of the aggregation height for a mixture of cellulose powder and m111 cells. the binding constant of 0.3% for m111 cells to cellulose powder was obtained in a 20 mm citrate buffer of ph 5.0 at 30 degrees c. aggregation was inhibited by ... | 2001 | 11758908 |
| tissue magnesium and calcium affect arbuscular mycorrhiza development and fungal reproduction. | applications of high levels of mgso4 resulted in reduced root colonization and sporulation by glomus sp. (invam isolate fl329) with sweet potato and onion in aeroponic and sand culture, respectively. onion shoot-mg concentrations were elevated when a nutrient solution containing 2.6 or 11.7 mm mgso4 was applied. magnesium application depressed tissue-ca levels. with lower ca in the tissue, colonization was reduced from > 30% of root length to < 10%, and sporulation from > 1200 to ca. 200 spores ... | 1998 | 24578048 |
| growing root, tuber and nut crops hydroponically for celss. | among the crops selected by the national aeronautics and space administration for growth in controlled ecological life support systems are four that have subsurface edible parts -- potatoes, sweet potatoes, sugar beets and peanuts. these crops have been produced in open and closed (recirculating), solid media and liquid, hydroponic systems. fluorescent , fluorescent plus incandescent and high pressure sodium plus metal halide lamps have proven to be effective light sources. continuous light with ... | 1992 | 11537058 |
| partial life history of chrysodeixis includens (lepidoptera: noctuidae) on summer hosts. | the soybean looper, chrysodeixis includens (walker) (lepidoptera: noctuidae), is a major defoliating pest of soybeans, glycine max (l.) merrill, in louisiana. however, other alternate host crops in the agroecosystem have the potential to impact c. includens populations. life table statistics of c. includens on four host plants were evaluated. c. includens larvae were fed leaves of three cotton gossypium hirsutum l. cultivars 'dp 143 b2rf,' 'dp 174 rf,' and 'phy 485 wrf'; cowpea vigna unguiculata ... | 2016 | 27375294 |
| genetically modified foods: safety, risks and public concerns-a review. | genetic modification is a special set of gene technology that alters the genetic machinery of such living organisms as animals, plants or microorganisms. combining genes from different organisms is known as recombinant dna technology and the resulting organism is said to be 'genetically modified (gm)', 'genetically engineered' or 'transgenic'. the principal transgenic crops grown commercially in field are herbicide and insecticide resistant soybeans, corn, cotton and canola. other crops grown co ... | 2013 | 24426015 |
| a spatial ecology study on the effects of field conditions and crop rotation on the incidence of plectris aliena (coleoptera: scarabaeidae) grub damage to sweetpotato roots. | a farmscape study was conducted in commercial sweetpotato (ipomoea batatas (l.) lam) fields in columbus county, nc, in 2010 and 2011 to investigate the effects of the following field conditions: soil drainage class, soil texture, field size, border habitat, land elevation, and the previous year's crop rotation on the incidence of damage caused by plectris aliena chapman (coleoptera:scarabaeidae) larval feeding. soil drainage and crop rotation significantly affected the incidence of damage to roo ... | 2013 | 24331614 |
| sweet potato-based complementary food for infants in low-income countries. | in low-income countries, most infants are given cereal-based complementary foods prepared at the household level. such foods are high in phytate, which limits the bioavailability of nutrients, including iron, calcium, zinc, and in some cases proteins, which are crucial to the development of infants. | 2012 | 22624294 |
| flow injection spectrophotometric determination of l-dopa and carbidopa in pharmaceutical formulations using a crude extract of sweet potato root [ipomoea batatas (l.) lam.] as enzymatic source. | a flow injection (fi) spectrophotometric method is proposed for the determination of l-dopa and carbidopa in pharmaceutical formulations. after selection of the extraction medium (e.g., buffer-to-tissue ratio, ph, buffer concentration, protective agents and/or stabilizers) and storage conditions, crude extract of sweet potato root [ipomoea batatas (l.) lam.] was used as an enzymatic source of polyphenol oxidase (tyrosinase; catechol oxidase; ec.1.14.18.1) directly in the carrier. this enzyme cat ... | 1997 | 9177077 |
| integrating biological treatment of crop residue into a hydroponic sweetpotato culture. | residual biomass from hydroponic culture of sweetpotato [ipomoea batatas (l.) lam.] was degraded using natural bacterial soil isolates. sweetpotato was grown for 120 days in hydroponic culture with a nutrient solution comprised of a ratio of 80% modified half hoagland solution to 20% filtered effluent from an aerobic starch hydrolysis bioreactor. the phytotoxicity of the effluent was assayed with waldmann's green' lettuce (lactuca sativa l.) and the ratio selected after a 60-day bioassay using s ... | 1997 | 11542554 |
| nutrient and sensory qualities of kunun zaki from different saccharification agents. | kunun zaki--a cereal-based non-alcoholic, non-carbonated beverage--was studied. the ratio of blends of major ingredients, nutrient, amino acid content and sensory qualities of kunun zaki generated with different saccharifying agents were investigated. the main ingredients of the formulations were malted rice, sweet potato, soybeans and cadaba farinosa (dangarafa or legel in hausa), each used separately with sorghum to produce a kunun zaki type. the weight ratios of the major ingredients were 8:9 ... | 2002 | 11939105 |
| affinity purification of beta-amylases originating from plant using cyclomaltohexaose-immobilized sepharose 6b in the presence of ammonium sulfate. | this paper reports a novel method of affinity purification of soybean and barley beta-amylase on cyclomaltohexaose-immobilized sepharose. until now, it has been shown that sweet potato beta-amylase can be purified using the above absorbent but beta-amylases from soybean and barley seeds cannot. we found that soybean and barley beta-amylase becomes adsorbed specifically on the above absorbent if it is in solution with 1 to 2 m ammonium sulfate, and the adsorbed enzyme can be easily eluted with a ... | 1993 | 8374302 |
| hydrogen sulfide promotes root organogenesis in ipomoea batatas, salix matsudana and glycine max. | in this report, we demonstrate that sodium hydrosulfide (nahs), a hydrogen sulfide (h(2)s) donor, promoted adventitious root formation mediated by auxin and nitric oxide (no). application of the h(2)s donor to seedling cuttings of sweet potato (ipomoea batatas l.) promoted the number and length of adventitious roots in a dose-dependent manner. it was also verified that h(2)s or hs(-) rather than other sulfur-containing components derived from nahs could be attributed to the stimulation of advent ... | 2009 | 20021556 |
| enzyme-linked immunosorbent assay kit for the determination of soybean protein in processed foods: interlaboratory evaluation. | the labeling of foods containing ingredients derived from soybean is recommended in japan because of an increasing number of patients who are allergic to soybeans. to ensure proper labeling, a novel sandwich elisa kit for the determination of soybean protein in processed foods (fastkit ver. ii, "soybean", nippon meat packers, inc.; "soy kit") has been developed. five types of incurred samples (model processed foods: rice gruel, sausage, sweet adzuki bean soup, sweet potato cake, and tomato sauce ... | 2010 | 20334186 |
| analysis of plant harvest indices for bioregenerative life support systems. | harvest indices, which are measures of the ratio of edible to total plant weight, are redefined to include edible sugars derived from enzymatic hydrolysis of the cellulose content of inedible plant components. compositional analysis and carbohydrate contents of rapeseed, rice, soybeans, cowpea, wheat, sweet potato, white potato, and lettuce were analyzed to develop such generalized harvest indices. cellulose conversion is shown to extend considerably the food available from plants otherwise grow ... | 1995 | 11541096 |
| food washing and placer mining in captive great apes. | sweet potato washing and wheat placer mining in japanese macaques (macaca fuscata) are among the most well known examples of local traditions in non-human animals. the functions of these behaviors and the mechanisms of acquisition and spread of these behaviors have been debated frequently. prompted by animal caretaker reports that great apes [chimpanzees (pan troglodytes), bonobos (pan paniscus), gorillas (gorilla gorilla), and orangutans (pongo abelii)] at leipzig zoo occasionally wash their fo ... | 2013 | 23665925 |
| improvement for agronomically important traits by gene engineering in sweetpotato. | sweetpotato is the seventh most important food crop in the world. it is mainly used for human food, animal feed, and for manufacturing starch and alcohol. this crop, a highly heterozygous, generally self-incompatible, outcrossing polyploidy, poses numerous challenges for the conventional breeding. its productivity and quality are often limited by abiotic and biotic stresses. gene engineering has been shown to have the great potential for improving the resistance to these stresses as well as the ... | 2017 | 28465664 |
| isolation and abiotic stress resistance analyses of a catalase gene from ipomoea batatas (l.) lam. | as an indicator of the antioxidant capability of plants, catalase can detoxify reactive oxygen species (ros) generated by environmental stresses. sweet potato is one of the top six most important crops in the world. however, its catalases remain largely unknown. in this study, a catalase encoding gene, ibcat2 (accession number: ky615708), was identified and cloned from sweet potato cv. xushu 18. it contained a 1479 nucleotides' open reading frame (orf). s-r-l, q-k-l, and a putative calmodulin bi ... | 2017 | 28638833 |
| antioxidant activities of two metallothionein-like proteins from sweet potato (ipomoea batatas [l.] lam. `tainong 57') storage roots and their synthesized peptides. | metallothionein (mt) characterized by their low molecular weight and high cysteine content. | 2014 | 28510944 |
| dehydroascorbate reductase and monodehydroascorbate reductase activities of two metallothionein-like proteins from sweet potato (ipomoea batatas [l.] lam. 'tainong 57') storage roots. | metallothionein (mt) is a group of proteins with low molecular masses and high cysteine contents, and it is classified into different types, which generally contains two domains with typical amino acid sequences. | 2013 | 28510854 |
| chemical evaluation of multimixes formulated from some local staples for use as complementary foods in nigeria. | the nutrient compositions of eight multimixes formulated for use as complementary foods from processed soybeans, cowpeas, maize, sorghum, yams, cocoyams, plantains and sweet potatoes were examined. the foods were processed by sprouting, cooking and fermentation. the samples were separately dried and milled to fine flours. a ratio of 65% cereal, 30% legume and 5% starchy staple (65:30:5) calculated on a protein basis was used to formulate the multimixes. the blends were chemically analyzed using ... | 2000 | 11030479 |
| effects of extrusion cooking on functional properties of mixtures of full-fat soy and sweet potato. | full-fat soy and sweet potato were extruded at 0:100, 25:75, 50:50, 75:25 and 100:0 ratios in an insta-pro 600 single screw extruder operated at 180, 200, 220 rpm respectively. functional properties: bulk density, expansion ratio, water absorption and solubility indices and trypsin inhibitor were assayed. results showed that addition of soybeans to sweet potatoes considerably increased the protein, fat, ash and trypsin inhibitor levels of the raw material mixtures. it also led to decreases in vi ... | 1998 | 10890756 |
| botanical origin of dietary supplements labeled as "kwao keur", a folk medicine from thailand. | in the course of our study on the quality of dietary supplements in japan, both the internal transcribed spacer (its) sequence of nrdna and the rps16 intron sequence of cpdna of products labeled as "kwao keur" were investigated. as a result, the dna sequence of pueraria candollei var. mirifica, which is the source plant of kwao keur, was observed in only about half of the products. inferred from the determined sequences, source plants in the other products included medicago sativa, glycyrrhiza u ... | 2014 | 23677774 |
| species or genotypes? reassessment of four recently described species of the ceratocystis wilt pathogen, ceratocystis fimbriata, on mangifera indica. | ceratocystis wilt is among the most important diseases on mango (mangifera indica) in brazil, oman, and pakistan. the causal agent was originally identified in brazil as ceratocystis fimbriata, which is considered by some as a complex of many cryptic species, and four new species on mango trees were distinguished from c. fimbriata based on variation in internal transcribed spacer sequences. in the present study, phylogenetic analyses using dna sequences of mating type genes, tef-1α, and β-tubuli ... | 2015 | 25822187 |
| intraspecific and intragenomic variability of its rdna sequences reveals taxonomic problems in ceratocystis fimbriata sensu stricto. | fourteen new species in the latin american clade (lac) of the ceratocystis fimbriata complex recently were distinguished from c. fimbriata sensu stricto largely based on variation in its rdna sequences. among the 116 isolates representing the lac, there were 41 its haplotypes. maximum parsimony (mp) analysis of its sequences produced poorly resolved trees. in contrast, analyses of mating-type genes (mat1-1-2 and mat1-2-1) resolved a single mp tree with branches of high bootstrap and posterior pr ... | 2014 | 24782492 |
| food poisoning due to methamidophos-contaminated vegetables. | organophosphate poisoning is well known for its characteristic symptoms and signs, but food poisoning caused by pesticide-contaminated food is seldom reported. | 2001 | 11527224 |
| assessment of the potential health risks associated with the aluminium, arsenic, cadmium and lead content in selected fruits and vegetables grown in jamaica. | thirteen jamaican-grown food crops - ackee (blighia sapida), banana (musa acuminate), cabbage (brassica oleracea), carrot (daucus carota), cassava (manihot esculenta), coco (xanthosoma sagittifolium), dasheen (colocasia esculenta), irish potato (solanum tuberosum), pumpkin (cucurbita pepo), sweet pepper (capsicum annuum), sweet potato (ipomoea batatas), tomato (solanum lycopersicum) and turnip (brassica rapa) - were analysed for aluminium, arsenic, cadmium and lead by atomic absorption spectroph ... | 2017 | 28959639 |
| inoculation of somatic embryos of sweet potato with an arbuscular mycorrhizal fungus improves embryo survival and plantlet formation. | responses of somatic embryos of sweet potato (ipomoea batata (l.) poir., cv. white star) at different developmental stages to in vitro inoculation with glomus etunicatum (becker and gerdemann) (isolate invam fl329) were evaluated. somatic embryos were grown in glass tubes containing sterilized vermiculite and sand. a layer of natrosol plus white's medium was used as a carrier for arbuscular mycorrhizal (am) fungal spores. survival of embryos inoculated with am fungi was significantly (p < 0.05) ... | 2000 | 10941521 |
| in vitro availability of some essential minerals in commonly eaten processed and unprocessed caribbean tuber crops. | the levels of three essential minerals ca, fe and mg and the extent of their availability were assessed in four commonly eaten caribbean tuber crops [dasheen (xanthosoma spp.), irish potato (solanum tuberosum), sweet potato (ipomoea batatas) and yellow yam (dioscorea cayenensis)] in their processed and unprocessed states. calcium was highest in cooked dasheen (5150+/-50 mg/kg) while magnesium was highest in uncooked irish potato (3600+/-200 mg/kg). there was no significant loss of calcium from t ... | 2007 | 16758116 |
| dioscorin, the major tuber storage protein of yam (dioscorea batatas decne) with carbonic anhydrase and trypsin inhibitor activities. | dioscorin, the tuber storage protein of yam (dioscorea batatas decne), was purified successively by ammonium sulfate fractionation, de-52 ion exchange chromatography, and sephadex g-75 column. two protein bands (82 and 28 kda) were found under nonreducing conditions after sds-page; but only one band (32 kda) was detected under reducing conditions. the first 21 amino acids in the n-terminal region of the 28 kda form were vedefsyiegnpngpenwgnl, which was highly homologous to deductive sequence of ... | 1999 | 10552514 |
| [field distribution pattern and metabolic activity of am fungi and their effects on ipomoea batatas growth]. | the study showed that after eight weeks of inoculating sweet potato seedlings with am fungus glomus intraradices beg141 under field condition, the shoot dry weight, individuals of tuber and their fresh weight, as well as the p uptake by the plant increased significantly. compared with the control, the root colonization rate, extraradical hyphal density and intraradical alkaline phosphatase (alp) activity were greatly increased. after inoculation with beg141, the total and succinate dehydrogenase ... | 2005 | 15852976 |
| value-added probiotic development by high-solid fermentation of sweet potato with saccharomyces boulardii. | controlled fermentation of sweet potato (ipomoea batatas) var. beauregard by yeast, saccharomyces boulardii (may 796) to enhance the nutritional value of sweet potato was investigated. an average 8.00 × 10(10) colony forming units (cfu)/g of viable cells were obtained over 5-day high-solid fermentation. yeast cell viability did not change significantly over time at 4°c whereas the number of viable yeast cells reduced significantly at room temperature (25°c), which was approximately 40% in 12 mon ... | 2017 | 28572951 |
| viscoelastic properties of sweet potato complementary porridges as influenced by endogenous amylases. | sweet potato (ipomoea batatas l.) roots contain amylolytic enzymes, which hydrolyze starch thus having the potential to affect the viscosity of sweet potato porridges provided the appropriate working conditions for the enzymes are attained. in this study, the effect of sweet potato variety, postharvest handling conditions, freshly harvested and room/ambient stored roots (3 weeks), and slurry solids content on the viscoelastic properties of complementary porridges prepared using amylase enzyme ac ... | 2017 | 29188034 |
| chemical constituents of sweetpotato genotypes in relation to textural characteristics of processed french fries. | sweetpotato french fries (spff) are growing in popularity, however limited information is available on spff textural properties in relation to chemical composition. this study investigated the relationship between chemical components of different sweetpotato varieties and textural characteristics of spff. sixteen sweetpotato genotypes were evaluated for (1) chemical constituents; (2) instrumental and sensory textural properties of spff; and (3) the relationship between chemical components, instr ... | 2018 | 29178339 |
| phylogenetic placement and morphological characterization of sclerotium rolfsii (teleomorph: athelia rolfsii) associated with blight disease of ipomoea batatas in korea. | in this study, we aimed to characterize fungal samples from necrotic lesions on collar regions observed in different sweetpotato growing regions during 2015 and 2016 in korea. sclerotia appeared on the root zone soil surface, and white dense mycelia were observed. at the later stages of infection, mother roots quickly rotted, and large areas of the plants were destroyed. the disease occurrence was monitored at 45 and 84 farms, and 11.8% and 6.8% of the land areas were found to be infected in 201 ... | 2017 | 29138617 |
| characterization of dietary constituents and antioxidant capacity of tropaeolum pentaphyllum lam. | the aim of this study was to evaluate the nutritional content and antioxidant capacity of the tubers, leaves and, flowers of the species tropaeolum pentaphyllum lam. the three parts of the plant were analyzed by physicochemical methods, atomic absorption spectrometry, spectrophotometric and chromatographic techniques. the tubers, leaves, and flowers exhibited significant differences in all parameters evaluated. the leaves showed significantly higher values of protein (16.28 ± 0.02 g/100 g), tota ... | 2017 | 29051654 |
| syk - gtp rac-1 mediated immune-stimulatory effect of cuscuta epithymum, ipomoea batata and euphorbia hirta plant extracts. | polymorphonuclear neutrophils (pmnn) are the pivotal mediators of phagocytosis. in addition to neutropenia, impaired neutrophilic function is associated with pathological conditions and immuno-deficiencies. henceforth, immuno-stimulatory strategies targeting neutrophilic function are indeed powerful tools in combating obstinate infections. in appreciation towards the usefulness of herbal medicines in therapeutic scenario, the present study was carried out to analyse the immuno-stimulatory effect ... | 2017 | 29049977 |
| construction of a genetic map using est-ssr markers and qtl analysis of major agronomic characters in hexaploid sweet potato (ipomoea batatas (l.) lam). | the sweet potato, ipomoea batatas (l.) lam, is difficult to study in genetics and genomics because it is a hexaploid. the sweet potato study not have been performed domestically or internationally. in this study was performed to construct genetic map and quantitative trait loci (qtl) analysis. a total of 245 est-ssr markers were developed, and the map was constructed by using 210 of those markers. the total map length was 1508.1 cm, and the mean distance between markers was 7.2 cm. fifteen chara ... | 2017 | 29020092 |
| evaluation of structure and bioprotective activity of key high molecular weight acylated anthocyanin compounds isolated from the purple sweet potato (ipomoea batatas l. cultivar eshu no.8). | in order to figure out the key acylated anthocyanin compounds accounting for the bioprotective activity of purple sweet potato (ipomoea batatas l.), ods packing column, semi-preparative hplc method, activity evaluation assays, and ultra-high-performance liquid chromatography with quadrupole time-of-flight tandem mass spectrometry (uplc-qtof-ms) assays were employed. additionally, our study revealed that the structures of two acylated monomeric anthocyanins, cyanidin 3-caffeoyl-feruloyl sophorosi ... | 2018 | 28958523 |
| characterization and hepatoprotective activity of anthocyanins from purple sweet potato (ipomoea batatas l. cultivar eshu no. 8). | the hepatoprotective activity of anthocyanin-rich purple sweet potato extract (apspe) was demonstrated. sixty mice were randomly divided into six groups: control group [without carbon tetrachloride (ccl4) or apspe]; model group (with ccl4 only); positive control group (50 mg/kg body weight silymarin); low-dose group (100 mg/kg body weight apspe); medium-dose group (200 mg/kg body weight apspe); and high-dose group (400 mg/kg body weight apspe). after 10 days intragastric administration of the re ... | 2017 | 28911647 |
| water-deficit tolerance in sweet potato [ipomoea batatas (l.) lam.] by foliar application of paclobutrazol: role of soluble sugar and free proline. | the objective of this study was to elevate water deficit tolerance by improving soluble sugar and free proline accumulation, photosynthetic pigment stabilization, photosynthetic abilities, growth performance and storage root yield in sweet potato cv. 'tainung 57' using a foliar application of paclobutrazol (pbz). the experiment followed a completely randomized block design with four concentrations of pbz: 0 (control), 17, 34, and 51 μm before exposure to 47.5% (well irrigation), 32.3% (mild wate ... | 2017 | 28848596 |
| optimization of polysaccharide ultrasonic extraction conditions using purple sweet potato tubers based on free radical scavenging and glycosylation inhibitory bioactivities. | the purple sweet potato, ipomoea batatas, belongs to the family convolvulaceae. it is one of the most widely consumed tubers in asia and is found in many dishes. many people with diabetes eat purple sweet potato tubers to help reduce blood glucose in china. | 2017 | 28839380 |
| haplotype-resolved sweet potato genome traces back its hexaploidization history. | here we present the 15 pseudochromosomes of sweet potato, ipomoea batatas, the seventh most important crop in the world and the fourth most significant in china. by using a novel haplotyping method based on genome assembly, we have produced a half haplotype-resolved genome from ~296 gb of paired-end sequence reads amounting to roughly 67-fold coverage. by phylogenetic tree analysis of homologous chromosomes, it was possible to estimate the time of two recent whole-genome duplication events as oc ... | 2017 | 28827752 |
| overexpression of arabidopsis p3b increases heat and low temperature stress tolerance in transgenic sweetpotato. | sweetpotato (ipomoea batatas [l.] lam) is suitable for growth on marginal lands due to its abiotic stress tolerance. however, severe environmental conditions including low temperature pose a serious threat to the productivity and expanded cultivation of this crop. in this study, we aimed to develop sweetpotato plants with enhanced tolerance to temperature stress. | 2017 | 28806972 |
| use of [c4mim]cl for efficient extraction of caffeoylquinic acids from sweet potato leaves. | sweet potato, ipomoea batatas, is a widely cultivated vegetable worldwide. the leaves contain polyphenolic natural products called caffeoylquinic acids (cqas), which possess biological activities including inhibition of aggregation of amyloid peptides. the present study describes an efficient extraction and isolation procedure for cqas from sweet potato leaves using a cellulose-dissolving ionic liquid. the results showed that, compared to methanol, use of 1-butyl-3-methylimidazolium chloride ([c ... | 2017 | 28761111 |
| the potential of computer vision, optical backscattering parameters and artificial neural network modelling in monitoring the shrinkage of sweet potato (ipomoea batatas l.) during drying. | drying is a method used to preserve agricultural crops. during the drying of products with high moisture content, structural changes in shape, volume, area, density and porosity occur. these changes could affect the final quality of dried product and also the effective design of drying equipment. therefore, this study investigated a novel approach in monitoring and predicting the shrinkage of sweet potato during drying. drying experiments were conducted at temperatures of 50-70 °c and samples th ... | 2017 | 28758207 |
| a ζ-carotene desaturase gene, ibzds, increases β-carotene and lutein contents and enhances salt tolerance in transgenic sweetpotato. | ζ-carotene desaturase (zds) is one of the key enzymes in carotenoid biosynthesis pathway. however, the zds gene has not been applied to carotenoid improvement of plants. its roles in tolerance to abiotic stresses have not been reported. in this study, the ibzds gene was isolated from storage roots of sweetpotato (ipomoea batatas (l.) lam.) cv. nongdafu 14. its overexpression significantly increased β-carotene and lutein contents and enhanced salt tolerance in transgenic sweetpotato (cv. kokei no ... | 2017 | 28716419 |
| comparative transcriptome analysis reveals critical function of sucrose metabolism related-enzymes in starch accumulation in the storage root of sweet potato. | the starch properties of the storage root (sr) affect the quality of sweet potato (ipomoea batatas (l.) lam.). although numerous studies have analyzed the accumulation and properties of starch in sweet potato srs, the transcriptomic variation associated with starch properties in sr has not been quantified. in this study, we measured the starch and sugar contents and analyzed the transcriptome profiles of srs harvested from sweet potatoes with high, medium, and extremely low starch contents, at f ... | 2017 | 28690616 |
| segregation of hydroxycinnamic acid esters mediating sweetpotato weevil resistance in storage roots of sweetpotato. | resistance to sweetpotato weevils (cylas spp.) has been identified in several sweetpotato (ipomoea batatas) landraces from east africa and shown to be conferred by hydroxycinnamic acids that occur on the surface of storage roots. the segregation of resistance in this crop is unknown and could be monitored using these chemical traits as markers for resistance in f1 offspring from breeding programs. for the first time in a segregating population, we quantified the plant chemicals that confer resis ... | 2017 | 28659954 |
| effect of different home-cooking methods on textural and nutritional properties of sweet potato genotypes grown in temperate climate conditions. | the european union (eu) market for sweet potato is small but is growing considerably and and has increased by 100% over the last 5 years. the cultivation of sweet potato in temperate climate conditions has not considered extensively and could be a new opportunity for the eu market. healthy and qualitative traits of different sweet potato cultivars grown in temperate climate conditions were evaluated in accordance with four cooking methods. | 2018 | 28653506 |
| ibor regulates photosynthesis under heat stress by stabilizing ibpsbp in sweetpotato. | the orange (or) protein regulates carotenoid biosynthesis and environmental stress in plants. previously, we reported that overexpression of the sweetpotato [ipomoea batatas (l.) lam] or gene (ibor) in transgenic arabidopsis (referred to as ibor-ox/at) increased the efficiency of photosystem ii (psii) and chlorophyll content after heat shock. however, little is known about the role of ibor in psii-mediated protection against abiotic stress. in this study, comparative proteomics revealed that exp ... | 2017 | 28642783 |
| evaluation of the effects of sweet potato (ipomoea batatas (l.) lam) in broiler diets. | cereal grains such as maize and wheat are used extensively in feed formulations for poultry as the primary source of carbohydrates. high cost of these grains in many developing countries necessitates the evaluation of other ingredients that are grown locally. sweet potato is one such crop. the study was conducted as a proof of concept experiment to test the hypothesis that in the presence and absence of enzyme, sweet potato roots when included in diets of broiler chickens may affect the total me ... | 2018 | 28603839 |
| genetic analysis and association of simple sequence repeat markers with storage root yield, dry matter, starch and β-carotene content in sweetpotato. | molecular markers are needed for enhancing the development of elite sweetpotato (ipomoea batatas (l.) lam) cultivars with a wide range of commercially important traits in sub-saharan africa. this study was conducted to estimate the heritability and determine trait correlations of storage root yield, dry matter, starch and β-carotene content in a cross between 'new kawogo' × 'beauregard'. the study was also conducted to identify simple sequence repeat (ssr) markers associated with these traits. a ... | 2017 | 28588391 |
| anthocyanins from purple sweet potato (ipomoea batatas (l.) lam.) and their color modulation by the addition of phenolic acids and food-grade phenolic plant extracts. | anthocyanin profiles and contents of three purple sweet potato provenances were investigated by hplc-dad-msn. in contrast to widely uniform profiles, the contents of total (558-2477mg/100gdm) and individual anthocyanins varied widely. furthermore, quantitative and qualitative effects of intermolecular co-pigmentation were studied by adding chlorogenic and rosmarinic acids, and food-grade phenolic apple and rosemary extracts at various dosages to a diluted purple sweet potato concentrate at ph 0. ... | 2017 | 28554635 |
| structure of sweet potato (ipomoea batatas) diversity in west africa covaries with a climatic gradient. | sub-saharan agriculture has been identified as vulnerable to ongoing climate change. adaptation of agriculture has been suggested as a way to maintain productivity. better knowledge of intra-specific diversity of varieties is prerequisites for the successful management of such adaptation. among crops, root and tubers play important roles in food security and economic growth for the most vulnerable populations in africa. here, we focus on the sweet potato. the sweet potato (ipomoea batatas) was d ... | 2017 | 28552989 |
| effect of high pressure on the saccharification of starch in the tuberous root of sweet potato (ipomoea batatas). | we analyzed the effect of high hydrostatic pressure (hhp) treatment on reducing sugar production in the tuberous root of sweet potato (ipomoea batatas), based on pressure-gelatinization of starch and subsequent saccharification by internal amylases. hhp treatment at up to 600mpa at ambient temperature for 10min did not apparently affect the reducing sugar concentration in tuberous root. however, hhp treatment at 100 to 500mpa and 60°c or 70°c for 10min increased reducing sugar concentration as b ... | 2017 | 28506613 |
| cloning and characterization of a novel gigantea gene in sweet potato. | the transition from vegetative to reproductive growth, a key event in the lifecycle of a plant, is affected by environmental stresses. the flowering-time regulator gigantea (gi) may be contributing to susceptibility of the regulation of photoperiodic flowering, circadian rhythm control, and abiotic stress resistance in arabidopsis. however, the role of gi in sweet potato remains unknown. here, we isolated and characterized a gi gene (ibgi) from sweet potato (ipomoea batatas [l.] lam). the ibgi c ... | 2017 | 28486137 |
| plastidial α-glucan phosphorylase 1 complexes with disproportionating enzyme 1 in ipomoea batatas storage roots for elevating malto-oligosaccharide metabolism. | it has been proposed that malto-oligosaccharides (moss) are possibly recycled back into amylopectin biosynthesis via the sequential reactions catalyzed by plastidial α-glucan phosphorylase 1 (pho1) and disproportionating enzyme 1 (dpe1). in the present study, the reciprocal co-immunoprecipitation experiments using specific antibodies against pho1 and dpe1 demonstrated that these two enzymes can form a complex (the pd complex) in ipomoea batatas storage roots. the immunohistochemistry analyses al ... | 2017 | 28472155 |
| carbohydrate components in sweetpotato storage roots: their diversities and genetic improvement. | carbohydrates are important components in sweetpotatoes in terms of both their industrial use and eating quality. although there has been a narrow range of diversity in the properties of sweetpotato starch, unique varieties and experimental lines with different starch traits have been produced recently both by conventional breeding and genetic engineering. the diversity in maltose content, free sugar composition and textural properties in sweetpotato cultivars is also important for their eating ... | 2017 | 28465669 |
| functional components in sweetpotato and their genetic improvement. | in addition to the nutritionally important components such as starches, vitamins and minerals, storage roots and leaves of sweetpotato (ipomoea batatas) contains several components with health-promoting functions. of these, the functionalities of carotenoids, anthocyanins and caffeoylquinic acids have been well established by in vitro and in vivo experiments. several sweetpotato cultivars containing high levels of these components have been developed in japan; e.g., 'ayamurasaki', which has high ... | 2017 | 28465668 |
| challenges to genome sequence dissection in sweetpotato. | the development of next generation sequencing (ngs) technologies has enabled the determination of whole genome sequences in many non-model plant species. however, genome sequencing in sweetpotato (ipomoea batatas (l.) lam) is still difficult because of the hexaploid genome structure. previous studies suggested that a diploid wild relative, i. trifida (h.b.k.) don., is the most possible ancestor of sweetpotato. therefore, the genetic and genomic features of i. trifida have been studied as a poten ... | 2017 | 28465666 |
| metabolic engineering of carotenoids in transgenic sweetpotato. | sweetpotato [ipomoea batatas (l.) lam], which contains high levels of antioxidants such as ascorbate and carotenoids in its storage root, is one of the healthiest foods, as well as one of the best starch crops for growth on marginal lands. in plants, carotenoid pigments are involved in light harvesting for photosynthesis and are also essential for photo-protection against excess light. as dietary antioxidants in humans, these compounds benefit health by alleviating aging-related diseases. the st ... | 2017 | 28465665 |
| recent progress in sweetpotato breeding and cultivars for diverse applications in japan. | sweetpotato (ipomoea batatas (l.) lam.) is an outcrossing hexaploid that is cultivated in the tropics and warm-temperate regions of the world. sweetpotato has played an important role as a famine-relief crop during its long history and has recently been reevaluated as a health-promoting food. in japan, sweetpotato is used for a wide range of applications, such as table use, processed foods, and alcohol and starch production, and two groups at national agriculture research organization (naro) und ... | 2017 | 28465663 |