| thermal stability of texture in chinese water chestnut may be dependent on 8,8'-diferulic acid (aryltetralyn form). | ferulic acid (fa) cross-links have been implicated in the thermal stability of texture in chinese water chestnut (cwc) tissues. the aim of the current study has been to investigate this concept further. cwc tissue strips were measured for their mechanical properties before and after extraction in increasing strengths of alkali. the mechanical properties were related to the associated mode of fracture (cell separation or breakage) at the fracture surfaces and the phenolic composition of the cell ... | 2003 | 12643670 |
| the uptake of uranium by eleocharis dulcis (chinese water chestnut) in the ranger uranium mine constructed wetland filter. | eleocharis dulcis has proliferated in a constructed wetland used to treat uranium mine runoff water, where it rapidly accumulates significant quantities of uranium (u) in its roots and relatively little in its stems. we investigated the mechanism of u uptake and accumulation by e. dulcis using field-sampling techniques and microcosm test work. results from the microcosm trials and outcomes from statistical tests of field sampled macrophyte, water and sediment indicate that the primary source of ... | 2004 | 15312943 |
| identification of major phenolic compounds of chinese water chestnut and their antioxidant activity. | chinese water chestnut (cwc) is one of the most popular foods among asian people due to its special taste and medical function. experiments were conducted to test the antioxidant activity and then determine the major phenolic compound components present in cwc. cwc phenolic extract strongly inhibited linoleic acid oxidation and exhibited a dose-dependent free-radical scavenging activity against alpha,alpha-diphenyl-beta-picrylhydrazyl (dpph) radicals, superoxide anions and hydroxyl radicals, whi ... | 2007 | 17851436 |
| do tropical wetland plants possess convective gas flow mechanisms? | • internal pressurization and convective gas flow, which can aerate wetland plants more efficiently than diffusion, are common in temperate species. here, we present the first survey of convective flow in a range of tropical plants. • the occurrence of pressurization and convective flow was determined in 20 common wetland plants from the mekong delta in vietnam. the diel variation in pressurization in culms and the convective flow and gas composition from stubbles were examined for eleocharis du ... | 2011 | 21175639 |
| compositional analysis of chinese water chestnut (eleocharis dulcis) cell-wall material from parenchyma, epidermis, and subepidermal tissues. | chinese water chestnut (eleocharis dulcis (burman f.) trin ex henschel) is a corm consumed globally in oriental-style cuisine. the corm consists of three main tissues, the epidermis, subepidermis, and parenchyma; the cell walls of which were analyzed for sugar, phenolic, and lignin content. sugar content, measured by gas chromatography, was higher in the parenchyma cell walls (931 μg/mg) than in the subepidermis (775 μg/mg) or epidermis (685 μg/mg). the alkali-extractable phenolic content, measu ... | 2013 | 24066627 |
| preparation and characterisation of the oligosaccharides derived from chinese water chestnut polysaccharides. | hydrogen peroxide (h2o2) is a strong oxidant that cleaves glycosidic bonds in polysaccharides. in this study, the oligosaccharides were prepared by removing the starch from chinese water chestnuts through hydrolysis using α-amylase and then hydrolysing the remaining polysaccharides with h2o2, during which the oligosaccharide yield was monitored. the yield of oligosaccharide was affected by reaction time, temperature, and h2o2 concentration. extended reaction times, high temperatures, and high h2 ... | 2015 | 25794714 |
| isolation, purification and identification of etiolation substrate from fresh-cut chinese water-chestnut (eleocharis tuberosa). | fresh cut chinese water-chestnut is a popular ready-to-eat fresh-cut fruit in china. however, it is prone to etiolation and the chemicals responsible for this process are not known yet. to address this problem, we extracted phytochemicals from etiolated chinese water-chestnut and separated them using mplc and column chromatography. four compounds were obtained and their structures were determined by interpretation of uv, tlc, hplc and nmr spectral data and by comparison with reported data. we id ... | 2015 | 25976800 |
| leaf transcriptome analysis and development of ssr markers in water chestnut (eleocharis dulcis). | water chestnut (eleocharis dulcis) is an important aquatic crop in china; however, transcriptomic and genomic data in public databases are limited. to identify genes and development molecular markers, high-throughput transcriptome sequencing was applied to generate transcript sequences from water chestnut leaf. more than 24 million reads were obtained, trimmed, and assembled into 40,796 contigs with an average length of 616.6 bp. sequence similarity analyses against 4 public databases (nr, go, k ... | 2015 | 26345758 |
| antitumor, antioxidant, and nitrite scavenging effects of chinese water chestnut (eleocharis dulcis) peel flavonoids. | the preparation, quantification, and characterization of flavonoid compounds from chinese water chestnut peel (cwcp) flavonoid extract and ethyl acetate fraction (ef), n-butanol fraction, and water fraction were studied. among these, ef showed the maximum free radical levels (ic50 values of 0.36, 0.40, and 0.37 mg/ml for dpph•, abts•(+) , and •oh, respectively), nitrite scavenging effects (ic50 = 1.89 mg/ml), and a549 cell inhibitory activities (ic50 = 776.12 μg/ml) with the highest value of tot ... | 2016 | 27603811 |
| transcriptome analysis of gene expression during chinese water chestnut storage organ formation. | the product organ (storage organ; corm) of the chinese water chestnut has become a very popular food in asian countries because of its unique nutritional value. corm formation is a complex biological process, and extensive whole genome analysis of transcripts during corm development has not been carried out. in this study, four corm libraries at different developmental stages were constructed, and gene expression was identified using a high-throughput tag sequencing technique. approximately 4.9 ... | 2016 | 27716802 |
| pathway analysis and metabolites identification by metabolomics of etiolation substrate from fresh-cut chinese water chestnut (eleocharis tuberosa). | fresh-cut chinese water chestnuts (cwc) turn yellow after being peeled, reducing their shelf life and commercial value. metabolomics, the systematic study of the full complement of small molecular metabolites, was useful for clarifying the mechanism of fresh-cut cwc etiolation and developing methods to inhibit yellowing. in this study, metabolic alterations associated with etiolation at different growth stages (0 day, 2 days, 3 days, 4 days, 5 days) from fresh-cut cwc were investigated using lc- ... | 2016 | 27916965 |
| burkholderia acidipaludis sp. nov., aluminum-tolerant bacteria isolated from chinese water chestnut (eleocharis dulcis) growing in highly acidic swamps in south-east asia. | two strains of aluminium-tolerant bacteria, sa33(t) and 7a078, were isolated from chinese water chestnut (eleocharis dulcis) growing in highly acidic swamps (ph 2-4) in actual acid sulfate soil areas of vietnam (sa33(t)) and thailand (7a078). the strains were gram-negative, aerobic, non-spore-forming rods, 0.6-0.7 mum wide and 1.3-1.7 mum long. these strains showed good growth at ph 3.0-8.0 and 17-37 degrees c. the organisms contained ubiquinone q-8 as the predominant isoprenoid quinone and c(16 ... | 2010 | 19819996 |
| burkholderia heleia sp. nov., a nitrogen-fixing bacterium isolated from an aquatic plant, eleocharis dulcis, that grows in highly acidic swamps in actual acid sulfate soil areas of vietnam. | nitrogen-fixing bacteria, strains sa41(t), sa42 and sa53, were isolated from an aquatic plant, eleocharis dulcis, that grows in highly acidic swamps (ph 2-4) in actual acid sulfate soil areas of vietnam. the isolates were gram-negative, aerobic, non-spore-forming, rod-shaped bacteria, having a cell width of 0.6-0.7 microm and a length of 1.5-1.7 microm. they showed good growth between ph 3.0 and 7.0, and between 17 and 37 degrees c. the organisms contained ubiquinone q-8 as the predominant isopr ... | 2010 | 19666801 |
| curtobacterium ammoniigenes sp. nov., an ammonia-producing bacterium isolated from plants inhabiting acidic swamps in actual acid sulfate soil areas of vietnam. | the ammonia-producing bacteria b55(t), ca73, sa69 and sa72 were isolated from the waterweeds ludwigia adscendens (b55(t)) and eleocharis dulcis (ca73, sa69 and sa72) grown in highly acidic swamps (ph 2-4) in actual acid sulfate soil areas of vietnam. the isolates were gram-positive, irregular rod-shaped, non-spore-forming bacteria. on the basis of 16s rrna gene sequence similarity, strain b55(t) was shown to belong to the genus curtobacterium of the class actinobacteria. chemotaxonomic data (mk- ... | 2007 | 17625173 |
| [accelerated senescence of fresh-cut chinese water chestnut tissues in relation to hydrogen peroxide accumulation]. | accelerated senescence of fresh-cut chinese water chestnut (cwc) tissues in relation to active oxygen species (aos) metabolism was investigated. fresh-cut cwc (2 mm thick) and intact cwc were stored at 4 degrees c in trays wrapped with plastic films. changes in superoxide anion production rate, activities of superoxide dismutase (sod), catalase (cat) and ascorbate peroxidase (apx) were monitored, while contents of hydrogen peroxide, ascorbic acid, mda as well as electrolyte leakage were measured ... | 2005 | 16222096 |
| visualization of plant cell walls by atomic force microscopy. | atomic force microscopy has been used to visualize the ultrastructure of hydrated plant cell wall material from prepared apple (malus pumila mill; cox orange pippin), water chestnut (eleocharis dulcis l.), potato (solanum tuberosum l.; bintje), and carrot (daucus carota l.; amsterdamse bak) parenchyma. samples of cell wall material in aqueous suspension were deposited onto freshly cleaved mica. excess water was blotted away and the moist samples were imaged in air at ambient temperature and humi ... | 1996 | 8785273 |