| chemical data as markers of the geographical origins of sugarcane spirits. | in an attempt to classify sugarcane spirits according to their geographic region of origin, chemical data for 24 analytes were evaluated in 50 cachaças produced using a similar procedure in selected regions of brazil: são paulo - sp (15), minas gerais - mg (11), rio de janeiro - rj (11), paraiba -pb (9), and ceará - ce (4). multivariate analysis was applied to the analytical results, and the predictive abilities of different classification methods were evaluated. principal component analysis ide ... | 2016 | 26593483 |
| sulfidogenesis interference on methane production from carbohydrate-rich wastewater. | two anaerobic fixed-structured bed reactors were fed with synthetic wastewater simulating the soluble fraction of sugarcane vinasse to evaluate the interference of sulfidogenesis on methanogenesis. the reactors running in parallel were subjected to the same operating conditions. the influent organic matter concentration (in term of chemical oxygen demand (cod)) remained close to 4,000 mgcod l(-1) and the hydraulic retention time was 24 hours. one reactor, the methanogenic (control reactor), rece ... | 2015 | 26524457 |
| the effects of fiber inclusion on pet food sensory characteristics and palatability. | the objectives of this study were to determine (a) the influence of fiber on the sensory characteristics of dry dog foods; (b) differences of coated and uncoated kibbles for aroma and flavor characteristics; (c) palatability of these dry dog foods; and (d) potential associations between palatability and sensory attributes. a total of eight fiber treatments were manufactured: a control (no fiber addition), guava fiber (3%, 6%, and 12%), sugar cane fiber (9%; large and small particle size), and wh ... | 2015 | 26479141 |
| detoxification of atrazine by endophytic streptomyces sp. isolated from sugarcane and detection of nontoxic metabolite. | atrazine is still one of the most used agricultural pesticides worldwide and it has been recognized as a major contaminant of surface and ground water. the aims of this research were to isolate an endophytic microorganism from leaves of sugarcane, evaluate its ability to degrade atrazine, and investigate the formation of metabolites. by sequencing of the 16s rrna gene, the endophytic isolate atz2 was identified as streptomyces sp. the reduction in atrazine concentration by streptomyces sp. atz2 ... | 2015 | 26467569 |
| s-triazine degrading bacterial isolate arthrobacter sp. ak-yn10, a candidate for bioaugmentation of atrazine contaminated soil. | the arthrobacter sp. strain ak-yn10 is an s-triazine pesticide degrading bacterium isolated from a sugarcane field in central india with history of repeated atrazine use. ak-yn10 was shown to degrade 99 % of atrazine in 30 h from media supplemented with 1000 mg l(-1) of the herbicide. draft genome sequencing revealed similarity to pao1, tc1, and tc2 catabolic plasmids of the arthrobacter taxon. plasmid profiling analyses revealed the presence of four catabolic plasmids. the trzn, atzb, and atzc ... | 2016 | 26403923 |
| anaerobic biological treatment of vinasse for environmental compliance and methane production. | the energy crisis resulted in increasing awareness that alternative sources of energy should be considered. during this time, brazil implemented ethanol production from sugarcane as biofuel. however, during this process, large amounts of residues are generated, such as vinasse. this residue can be treated anaerobically to generate methane as a source of bioenergy with the use of sequencing batch reactors operated with immobilized biomass (ansbbr). in this work, tests were conducted in an ansbbr ... | 2016 | 26400496 |
| effect of phenolic compounds from pretreated sugarcane bagasse on cellulolytic and hemicellulolytic activities. | this work shows both cellulases and hemicellulases are inhibited and deactivated by water-soluble and acetone extracted phenolics from sugarcane bagasse pretreated at 10% (w/v) for 30 min in liquid hot water at 180 or 200°c. the dissolved phenolics in vacuum filtrate increased from 1.4 to 2.4 g/l as temperature increased from 180 to 200°c. the suppression of cellulose and hemicellulose hydrolysis by phenolics is dominated by deactivation of the β-glucosidase or β-xylosidase components of cellula ... | 2016 | 26364828 |
| chemical typification of the sugarcane spirits produced in são paulo state. | to typify são paulo state sugarcane spirits, 37 chemical compounds were analyzed in 81 brazilian sugarcane spirits (cachaça), which were produced in different cities from são paulo state. among these samples, 56 were distilled in copper alembics, and the other 25 were distilled in steel columns. hierarchical cluster analysis and principal component analysis were performed with both chemical data sets. the chemical profiles of the cachaças distilled in the column apparatus formed 4 specific clust ... | 2015 | 26353046 |
| multi-trait multi-environment quantitative trait loci mapping for a sugarcane commercial cross provides insights on the inheritance of important traits. | breeding trials typically consist of phenotypic observations for various traits evaluated in multiple environments. for sugarcane in particular, repeated measures are obtained for plant crop and one or more ratoons, such that joint analysis through mixed models for modeling heterogeneous genetic (co)variances between traits, locations and harvests is appropriate. this modeling approach also enables us to include molecular marker information, aiding in understanding the genetic architecture of qu ... | 2017 | 26273212 |
| conversion of levulinic acid into γ-valerolactone using fe3(co)12: mimicking a biorefinery setting by exploiting crude liquors from biomass acid hydrolysis. | the conversion of biomass-derived levulinic acid (la) into gamma-valerolactone (gvl) using formic acid (fa) and fe3(co)12 as the catalyst precursor was achieved in 92% yield. to mimic a biorefinery setting, crude liquor (containing 20% la) from the acid hydrolysis of sugarcane biomass in a pilot plant facility was directly converted into gvl in good yield (50%), without the need for isolating la. | 2015 | 26258183 |
| health risks due to pre-harvesting sugarcane burning in são paulo state, brazil. | after 2003, a new period of expansion of the sugarcane culture began in brazil. pre-harvesting burning of sugarcane straw is an agricultural practice that, despite the nuisance for the population and pollution generated, still persisted in over 70% of the municipalities of são paulo state in 2010. in order to study the distribution of this risk factor, an ecological epidemiological study was conducted associating the rates of deaths and hospital admissions for respiratory diseases, for each muni ... | 2016 | 26247192 |
| quantitative (13)c multicp solid-state nmr as a tool for evaluation of cellulose crystallinity index measured directly inside sugarcane biomass. | the crystallinity index (ci) is often associated with changes in cellulose structure after biological and physicochemical pretreatments. while some results obtained with lignocellulosic biomass demonstrate a progressive increase in the ci as a function of pretreatments, it is also shown that the ci can significantly vary depending on the choice of the measurement method. besides, the influence of the ci on the recalcitrance of biomass has been controversial for a long time, but the most recent r ... | 2015 | 26244055 |
| a novel member of gh16 family derived from sugarcane soil metagenome. | glycoside hydrolases (ghs) are enzymes found in all living kingdoms that are involved in multiple physiological functions. due to their multiple enzymatic activities, ghs are broadly applied in bioethanol, food, and paper industry. in order to increase the productivity of these industrial processes, a constant search for novel and efficient enzymes has been proved to be necessary. in this context, metagenomics is a powerful approach to achieve this demand. in the current study, we describe the d ... | 2015 | 26242386 |
| large-scale transcriptome analysis of two sugarcane genotypes contrasting for lignin content. | sugarcane is an important crop worldwide for sugar and first generation ethanol production. recently, the residue of sugarcane mills, named bagasse, has been considered a promising lignocellulosic biomass to produce the second-generation ethanol. lignin is a major factor limiting the use of bagasse and other plant lignocellulosic materials to produce second-generation ethanol. lignin biosynthesis pathway is a complex network and changes in the expression of genes of this pathway have in general ... | 2015 | 26241317 |
| bioenergy from stillage anaerobic digestion to enhance the energy balance ratio of ethanol production. | the challenges associated with the availability of fossil fuels in the past decades intensified the search for alternative energy sources, based on an ever-increasing demand for energy. in this context, the application of anaerobic digestion (ad) as a core treatment technology in industrial plants should be highlighted, since this process combines the pollution control of wastewaters and the generation of bioenergy, based on the conversion of the organic fraction to biogas, a methane-rich gaseou ... | 2015 | 26233583 |
| isoconversional kinetic study of the thermal decomposition of sugarcane straw for thermal conversion processes. | the aim of this work was investigate the kinetics of the thermal decomposition reaction of sugarcane straw. the thermal decomposition experiments were conducted at four heating rates (1.25, 2.5, 5 and 10°c/min) in a thermogravimetric analyzer using nitrogen as inert atmosphere. the kinetic analysis was carried out applying the isoconversional method of friedman, and the activation energies obtained varied from 154.1kj/mol to 177.8kj/mol. the reaction model was determined through master plots, co ... | 2015 | 26232772 |
| verrucomicrobial community structure and abundance as indicators for changes in chemical factors linked to soil fertility. | here we show that verrucomicrobial community structure and abundance are extremely sensitive to changes in chemical factors linked to soil fertility. terminal restriction fragment length polymorphism fingerprint and real-time quantitative pcr assay were used to analyze changes in verrucomicrobial communities associated with contrasting soil nutrient conditions in tropical regions. in case study model i ("slash-and-burn deforestation") the verrucomicrobial community structures revealed disparate ... | 2015 | 26184407 |
| determination of furanic aldehydes in sugarcane bagasse by high-performance liquid chromatography with pulsed amperometric detection using a modified electrode with nickel nanoparticles. | a glassy carbon electrode chemically modified with nickel nanoparticles coupled with reversed-phase chromatography with pulsed amperometric detection was used for the quantitative analysis of furanic aldehydes in a real sample of sugarcane bagasse hydrolysate. chromatographic separation was carried out in isocratic conditions (acetonitrile/water, 1:9) with a flow rate of 1.0 ml/min, a detection potential of -50 mv vs. pd, and the process was completed within 4 min. the analytical curves presente ... | 2015 | 26178531 |
| environmental indicators for sustainability: a strategic analysis for the sugarcane ethanol context in brazil. | sugarcane ethanol is considered a renewable energy source and has emerged as a potential alternative to reduce dependency on fossil fuels, particularly in brazil. however, there are some questions about how sustainable this energy source is, given the impacts from its production and use on a larger scale. to understand and achieve sustainability, it is essential to build tools that can assess an integrated conception and help decision-makers to establish public policies for a sustainable develop ... | 2016 | 26153435 |
| cadmium, lead, and zinc mobility and plant uptake in a mine soil amended with sugarcane straw biochar. | accumulation of heavy metals in unconsolidated soils can prove toxic to proximal environments, if measures are not taken to stabilize soils. one way to minimize the toxicity of metals in soils is the use of materials capable of immobilizing these contaminants by sorption. biochar (bc) can retain large amounts of heavy metals due to, among other characteristics, its large surface area. in the current experiment, sugarcane-straw-derived biochar, produced at 700 °c, was applied to a heavy-metal-con ... | 2015 | 26146374 |
| influence of agricultural environment on the plant mite community in forest fragments. | the mite community has been surveyed in seasonal semideciduous forest with three types of surrounding agricultural environments to test the hypothesis that abundance and richness of mites in forest fragments are influenced by the type of agricultural environment. the survey has been carried out in six fragments, divided into sets of two fragments, each one neighboring one sort of agricultural environment: sugarcane crop (fs), orange crop (fo) and pasture (fp). in each fragment, ten individuals o ... | 2015 | 26132024 |
| modeling pollution potential input from the drainage basin into barra bonita reservoir, são paulo - brazil. | in this study multi-criteria modeling tools are applied to map the spatial distribution of drainage basin potential to pollute barra bonita reservoir, são paulo state, brasil. barra bonita reservoir basin had undergone intense land use/land cover changes in the last decades, including the fast conversion from pasture into sugarcane. in this respect, this study answers to the lack of information about the variables (criteria) which affect the pollution potential of the drainage basin by building ... | 2015 | 26132013 |
| differential gene expression in drought-tolerant sugarcane roots. | drought is one of the most frequent abiotic stresses limiting the productivity and geographical distribution of sugarcane culture. the use of drought-tolerant genotypes is one approach for overcoming the effects of water stress. we conducted a comparative study to identify gene expression profiles under water stress in tolerant sugarcane roots. two different cultivars, 1 drought tolerant (rb867515) and 1 drought susceptible (sp86-155), were evaluated at 4 sampling time points (1, 3, 5, and 10 da ... | 2015 | 26125930 |
| evaluation of the environmental performance of alternatives for polystyrene production in brazil. | the global demand for polystyrene is supposed to reach an overall baseline of 23.5 million tons by 2020. the market has experienced the effects of such growth, especially regarding the environmental performance of the production processes. in brazil, renewable assets have been used to overcome the adverse consequences of this expansion. this study evaluates this issue for the production of brazilian polystyrene resins, general-purpose polystyrene (gpps) and high-impact polystyrene (hips). the ef ... | 2015 | 26119380 |
| the influence of pretreatment methods on saccharification of sugarcane bagasse by an enzyme extract from chrysoporthe cubensis and commercial cocktails: a comparative study. | biomass enzymatic hydrolysis depends on the pretreatment methods employed, the composition of initial feedstock and the enzyme cocktail used to release sugars for subsequent fermentation into ethanol. in this study, sugarcane bagasse was pretreated with 1% h2so4 and 1% naoh and the biomass saccharification was performed with 8% solids loading using 10 fpase units/g of bagasse of the enzymatic extract from chrysoporthe cubensis and three commercial cocktails for a comparative study. overall, the ... | 2015 | 26094192 |
| using quantitative pcr with retrotransposon-based insertion polymorphisms as markers in sugarcane. | sugarcane is the main source of the world's sugar and is becoming increasingly important as a source of biofuel. the highly polyploid and heterozygous nature of the sugarcane genome has meant that characterization of the genome has lagged behind that of other important crops. here we developed a method using a combination of quantitative pcr with a transposable marker system to score the relative number of alleles with a transposable element (te) present at a particular locus. we screened two ge ... | 2015 | 26093024 |
| sustainability assessment of water hyacinth fast pyrolysis in the upper paraguay river basin, brazil. | fast pyrolysis of naturally produced water hyacinth was assessed through emergy accounting approach. two analyses were carried out to evaluate the influence of additional services and externalities on emergy indicators for a pyrolysis plant unit able to process 1000 kg of dry biomass per hour. the initial approach was a traditional emergy assessment in which financial fluxes and externalities were not considered. the second approach included taxes and fees of the brazilian government, interests ... | 2015 | 26081730 |
| response of sugarcane in a red ultisol to phosphorus rates, phosphorus sources, and filter cake. | we evaluated the effect of phosphorus application rates from various sources and in the presence or absence of filter cake on soil phosphorus, plant phosphorus, changes in acid phosphatase activity, and sugarcane productivity grown in eutrophic red ultisol. three p sources were used (triple superphosphate, araxa rock phosphate, and bayovar rock phosphate) and four application rates (0, 90, 180, and 360 kg ha(-1) of p2o5) in the presence or absence of filter cake (7.5 t ha(-1), dry basis). the so ... | 2015 | 26078993 |
| complete genome sequence of sporisorium scitamineum and biotrophic interaction transcriptome with sugarcane. | sporisorium scitamineum is a biotrophic fungus responsible for the sugarcane smut, a worldwide spread disease. this study provides the complete sequence of individual chromosomes of s. scitamineum from telomere to telomere achieved by a combination of pacbio long reads and illumina short reads sequence data, as well as a draft sequence of a second fungal strain. comparative analysis to previous available sequences of another strain detected few polymorphisms among the three genomes. the novel co ... | 2015 | 26065709 |
| label-free quantitative proteomics of embryogenic and non-embryogenic callus during sugarcane somatic embryogenesis. | the development of somatic cells in to embryogenic cells occurs in several stages and ends in somatic embryo formation, though most of these biochemical and molecular changes have yet to be elucidated. somatic embryogenesis coupled with genetic transformation could be a biotechnological tool to improve potential crop yields potential in sugarcane cultivars. the objective of this study was to observe somatic embryo development and to identify differentially expressed proteins in embryogenic (e) a ... | 2015 | 26035435 |
| pre-harvest cane burning and health: the association between school absences and burning sugarcane fields. | the objective of this study was to investigate an association between pre-harvest sugarcane burning and respiratory diseases in children under five years of age. the following data were collected in five schools in the city of araraquara, sp, southeastern brazil, between march and june 2009: daily records of absences and the reasons stated for these absences, total concentration of suspended particulate matter (µg/m3), and air humidity. the relationship between the percentage of school absences ... | 2015 | 26018783 |
| effects of the pretreatment method on high solids enzymatic hydrolysis and ethanol fermentation of the cellulosic fraction of sugarcane bagasse. | this work evaluated ethanol production from sugarcane bagasse at high solids loadings in the pretreatment (20-40% w/v) and hydrolysis (10-20% w/v) stages. the best conditions for diluted sulfuric acid, ahp and ox-b pretreatments were determined and mass balances including pretreatment, hydrolysis and fermentation were calculated. from a technical point of view, the best pretreatment was ahp, which enabled the production of glucose concentrations near 8% with high productivity (3.27 g/lh), as wel ... | 2015 | 26004382 |
| water stress alters lignin content and related gene expression in two sugarcane genotypes. | the lignin deposition in the stem of two sugarcane genotypes was assessed on exposure to water stress. the lignin content and the morphoanatomical characterization of the stem indicated that iacsp94-2094 plants are more lignified than those of iacsp95-5000 genotype, under normal water supply conditions, which was especially associated with higher lignin contents in the rind of mature internodes. water deficit had negative impact on the biomass production, mostly with iacsp94-2094 plants, possibl ... | 2015 | 25936563 |
| mesophilic hydrogen production in acidogenic packed-bed reactors (apbr) using raw sugarcane vinasse as substrate: influence of support materials. | bio-hydrogen production from sugarcane vinasse in anaerobic up-flow packed-bed reactors (apbr) was evaluated. four types of support materials, expanded clay (ec), charcoal (ch), porous ceramic (pc), and low-density polyethylene (ldp) were tested as support for biomass attachment. apbr (working volume - 2.3 l) were operated in parallel at a hydraulic retention time of 24 h, an organic loading rate of 36.2 kg-cod m(-3) d(-1), at 25 °c. maximum volumetric hydrogen production values of 509.5, 404, 8 ... | 2015 | 25891935 |
| a simple and practical control of the authenticity of organic sugarcane samples based on the use of machine-learning algorithms and trace elements determination by inductively coupled plasma mass spectrometry. | a practical and easy control of the authenticity of organic sugarcane samples based on the use of machine-learning algorithms and trace elements determination by inductively coupled plasma mass spectrometry is proposed. reference ranges for 32 chemical elements in 22 samples of sugarcane (13 organic and 9 non organic) were established and then two algorithms, naive bayes (nb) and random forest (rf), were evaluated to classify the samples. accurate results (>90%) were obtained when using all vari ... | 2015 | 25872438 |
| high organic loading rate on thermophilic hydrogen production and metagenomic study at an anaerobic packed-bed reactor treating a residual liquid stream of a brazilian biorefinery. | this study evaluated the influence of a high organic loading rate (olr) on thermophilic hydrogen production at an up-flow anaerobic packed-bed reactor (apbr) treating a residual liquid stream of a brazilian biorefinery. the apbr, filled with low-density polyethylene, was operated at an olr of 84.2 kg-cod m(-3) d(-1). this value was determined in a previous study. the maximum values of hydrogen production and yield were 5,252.6 ml-h2 d(-1) and 3.7 mol-h2 mol(-1)(total carbohydrates), respectively ... | 2015 | 25812810 |
| effect of sugarcane biopolymer in vocal fold of rabbits. comparative study with calcium hydroxyapatite. | to compare the inflammatory reaction caused by the injection of a sugarcane biopolymer (scb) into the vocal fold of rabbits with that caused by calcium hydroxyapatite (cah). | 2015 | 25790006 |
| characterization of typical aquatic humic substances in areas of sugarcane cultivation in brazil using tetramethylammonium hydroxide thermochemolysis. | aquatic humic substances (ahss) differ from one environment to another depending on land use and occupation. in addition, the effects of planting sugarcane on ahss are not well known. thus, the aim of this study was to characterize ahss extracted from a river in a typical region of sugarcane cultivation during dry and rainy seasons. the main characteristics of the ahss were obtained using fourier transformation infrared (ftir) spectroscopy, nuclear magnetic resonance (nmr) spectroscopy and off-l ... | 2015 | 25756675 |
| effects of soil attributes and straw accumulation on the sorption of hexazinone and tebuthiuron in tropical soils cultivated with sugarcane. | brazil is the largest sugarcane producer in the world in which hexazinone (3-cyclohexyl-6-dimethylamino-1-methyl-1,3,5-triazine-2,4-dione) and tebuthiuron (1-(5-tert-butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea) are heavily used. sugarcane harvesting is changing from the manual system with previous straw burning to the mechanized system without straw burning. the lack of burning results in soil organic carbon accumulation mainly in clayey soils, which should affect herbicides availability and f ... | 2015 | 25714455 |
| short-term physiological changes in roots and leaves of sugarcane varieties exposed to h2o2 in root medium. | the aim of this study was to evaluate the differential sensitivity of sugarcane genotypes to h2o2 in root medium. as a hypothesis, the drought tolerant genotype would be able to minimize the oxidative damage and maintain the water transport from roots to shoots, reducing the negative effects on photosynthesis. the sugarcane genotypes iacsp94-2094 (drought tolerant) and iacsp94-2101 (drought sensitive) were grown in a growth chamber and exposed to three levels of h2o2 in nutrient solution: contro ... | 2015 | 25703773 |
| soil carbon, nitrogen and phosphorus changes under sugarcane expansion in brazil. | historical data of land use change (luc) indicated that the sugarcane expansion has mainly displaced pasture areas in central-southern brazil, globally the largest producer, and that those pastures were prior established over native forests in the cerrado biome. we sampled 3 chronosequences of land use comprising native vegetation (nv), pasture (pa), and sugarcane crop (sc) in the sugarcane expansion region to assess the effects of luc on soil carbon, nitrogen, and labile phosphorus pools. thirt ... | 2015 | 25688522 |
| characterization and fatty acid profiling in two fresh water microalgae for biodiesel production: lipid enhancement methods and media optimization using response surface methodology. | two fresh water microalgae, coelastrella sp. m-60 and micractinium sp. m-13 were investigated in this study for their potential of biodiesel production. for increasing biomass and lipid production, these microalgae were subjected to nutrient starvation (nitrogen, phosphorous, iron), salinity stress and nutrient supplementation with sugarcane industry effluent, citric acid, glucose and vitamin b12. the lipid productivity obtained from the isolates coelastrella sp. m-60 (13.9 ± 0.4 mg/l/day) and m ... | 2015 | 25682476 |
| spatial variability of soil potassium in sugarcane areas subjected to the application of vinasse. | when deposited on land the vinasse can promote improvement in fertility, however, often fertilizer application occurs in areas considered homogeneous, without taking into account the variability of the soil. the objective of this study was to evaluate the effect of vinasse application on potassium content in two classes of soils cultivated with sugarcane, and characterize the spatial variability of soil using geostatistical techniques. in the 2010 and 2011 crop year, soil samples were collected ... | 2014 | 25590735 |
| effect of land use on mayfly assemblages structure in neotropical headwater streams. | the aim of this study was to test the effect of agricultural and forestry land use on the structure of mayfly assemblages in low-order streams. twenty-nine headwater streams were investigated in the state of são paulo. we analyzed 15 streams in pristine areas (mixed tropical rainforest, semideciduous forest and dense tropical rainforest), and 14 streams covered with sugarcane, eucalyptus and pasture. mayfly richness obtained by rarefaction curves was higher in pristine areas (21 genera), especia ... | 2014 | 25590712 |
| determination of halosulfuron-methyl herbicide in sugarcane juice and tomato by capillary electrophoresis-tandem mass spectrometry. | a capillary electrophoresis-tandem mass spectrometry (ce-ms/ms) method for the determination of halosulfuron-methyl (hsu) residue in samples of sugarcane juice and tomato is introduced and validated. the samples were submitted to a quechers extraction procedure followed by electrophoretic separation in nh4hco3 electrolyte (adjusted to ph 8.5) and detection by electrospray-tandem mass spectrometry. the total hsu migration took place in less than 3.5 min, and the detection was accomplished by moni ... | 2015 | 25577054 |
| early changes in arbuscular mycorrhiza development in sugarcane under two harvest management systems. | sugarcane (saccharum spp.) is grown on over 8 million ha in brazil and is used to produce ethanol and sugar. some sugarcane fields are burned to facilitate harvesting, which can affect the soil microbial community. however, whether sugarcane pre-harvest burning affects the community of arbuscular mycorrhizal fungi (amf) and symbioses development is not known. in this study, we investigated the early impacts of harvest management on amf spore communities and root colonization in three sugarcane v ... | 2014 | 25477936 |
| a method to estimate the biomass of spirulina platensis cultivated on a solid medium. | this paper presents a method to estimate the biomass of spirulina cultivated on solid medium with sugarcane bagasse as a support, in view of the difficulty in determining biomass concentrations in bioprocesses, particularly those conducted in semi-solid or solid media. the genus spirulina of the family oscillatoriaceae comprises the group of multicellular filamentous cyanobacteria (blue-green microalgae). spirulina is used as fish feed in aquaculture, as a food supplement, a source of vitamins, ... | 2014 | 25477928 |
| involvement of dopaminergic and cholinergic pathways in the induction of yawning and genital grooming by the aqueous extract of saccharum officinarum l. (sugarcane) in rats. | yawning, associated with genital grooming, is a physiological response that may be used for elucidating the mechanism of action of drugs. preliminary analysis showed that aqueous extract (ae) of saccharum induced yawns in rats. so, we aimed to quantify these behavioral responses and investigate the pharmacological mechanisms involved in these actions. during 120 min, after ae administration, the yawns and the genital grooming were quantified at 10 min intervals. since dopaminergic and cholinergi ... | 2015 | 25459296 |
| [surveillance experience in the sugarcane sector: challenges in disrupting the perilous "marathon" of the sugarcane plantations]. | the sugar-alcohol sector is growing year by year, especially in the state of sao paulo where approximately 42.9% of the sugar-ethanol plants are concentrated. the production chain is a subject for concern to public agencies and to civil society by exposing migrant workers to risks arising from the work process. in sao paulo, from 2006-2009, occupational health surveillance (visat) set up two initiatives to address problems related to the housing and working conditions of sugarcane workers. the o ... | 2014 | 25388174 |
| genetic diversity and coefficient of parentage between clones and sugarcane varieties in brazil. | the success of the development of new sugarcane varieties is associated with the ability to correctly select the genitor. the aim of this study was to evaluate the genetic diversity between 113 clones and sugarcane varieties using the ward-modified location model procedure with added information about the coefficient of parentage and endogamy. in this study, data was used from 100 experiments that evaluated clones; the experimental phase was conducted in 70 places between the years 2002 and 2009 ... | 2014 | 25366791 |
| nuclear magnetic resonance investigation of water accessibility in cellulose of pretreated sugarcane bagasse. | enzymatic hydrolysis is a crucial step of biomass conversion into biofuels and different pretreatments have been proposed to improve the process efficiency. amongst the various factors affecting hydrolysis yields of biomass samples, porosity and water accessibility stand out due to their intimate relation with enzymes accessibility to the cellulose and hemicellulose fractions of the biomass. in this work, sugarcane bagasse was subjected to acid and alkali pretreatments. the changes in the total ... | 2014 | 25342969 |
| gluconic acid production from sucrose in an airlift reactor using a multi-enzyme system. | sucrose from sugarcane is produced in abundance in brazil, which provides an opportunity to manufacture other high-value products. gluconic acid (ga) can be produced by multi-enzyme conversion of sucrose using the enzymes invertase, glucose oxidase, and catalase. in this process, one of the byproducts is fructose, which has many commercial applications. this work concerns the batch mode production of ga in an airlift reactor fed with sucrose as substrate. evaluation was made of the influence of ... | 2015 | 25326720 |
| adsorption characteristics of cellulase and β-glucosidase on avicel, pretreated sugarcane bagasse, and lignin. | although adsorption is an essential step in the enzymatic hydrolysis of lignocellulosic materials, literature reports controversial results in relation to the adsorption of the cellulolitic enzymes on different biomasses/pretreatments, which makes difficult the description of this phenomenon in hydrolysis mathematical models. in this work, the adsorption of these enzymes on avicel and sugarcane bagasse pretreated by the hydrothermal bagasse (hb) and organosolv bagasse (ob) methods was evaluated. ... | 2015 | 25322902 |
| oligomerization, membrane association, and in vivo phosphorylation of sugarcane udp-glucose pyrophosphorylase. | sugarcane is a monocot plant that accumulates sucrose to levels of up to 50% of dry weight in the stalk. the mechanisms that are involved in sucrose accumulation in sugarcane are not well understood, and little is known with regard to factors that control the extent of sucrose storage in the stalks. udp-glucose pyrophosphorylase (ugpase; ec 2.7.7.9) is an enzyme that produces udp-glucose, a key precursor for sucrose metabolism and cell wall biosynthesis. the objective of this work was to gain in ... | 2014 | 25320091 |
| effect of land use on mayfly assemblages structure in neotropical headwater streams. | the aim of this study was to test the effect of agricultural and forestry land use on the structure of mayfly assemblages in low-order streams. twenty-nine headwater streams were investigated in the state of são paulo. we analyzed 15 streams in pristine areas (mixed tropical rainforest, semideciduous forest and dense tropical rainforest), and 14 streams covered with sugarcane, eucalyptus and pasture. mayfly richness obtained by rarefaction curves was higher in pristine areas (21 genera), especia ... | 2014 | 25317730 |
| formulation of trichoderma sp. sl2 inoculants using different carriers for soil treatment in rice seedling growth. | trichoderma sp. sl2 has been previously reported to enhance rice germination, vigour, growth and physiological characteristics. the use of potato dextrose agar as carrier of trichoderma sp. sl2 inoculant is not practical for field application due to its short shelf life and high cost. this study focuses on the use of corn and sugarcane bagasse as potential carriers for trichoderma sp. sl2 inoculants. | 2014 | 25279323 |
| sugarcane biomass for biorefineries: comparative composition of carbohydrate and non-carbohydrate components of bagasse and straw. | two fractions of sugarcane, namely bagasse and straw (or trash), were characterized in relation to their chemical composition. bagasse presented values of glucans, hemicelluloses, lignin and ash of 37.74, 27.23, 20.57 and 6.53%, respectively, while straw had 33.77, 27.38, 21.28 and 6.23% of these same components. ash content was relatively high in both cane biomass fractions. bagasse showed higher levels of contaminating oxides while straw had a higher content of alkaline and alkaline-earth oxid ... | 2014 | 25263869 |
| full-length enriched cdna libraries and orfeome analysis of sugarcane hybrid and ancestor genotypes. | sugarcane is a major crop used for food and bioenergy production. modern cultivars are hybrids derived from crosses between saccharum officinarum and saccharum spontaneum. hybrid cultivars combine favorable characteristics from ancestral species and contain a genome that is highly polyploid and aneuploid, containing 100-130 chromosomes. these complex genomes represent a huge challenge for molecular studies and for the development of biotechnological tools that can facilitate sugarcane improvemen ... | 2014 | 25222706 |
| a fluorescence-based method for cyanate analysis in ethanol/water media: correlation between cyanate presence and ethyl carbamate formation in sugar cane spirit. | based on the fluorescence properties of 2,4-(1h,3h)-quinazolinedione, a product of the reaction between cyanate and 2-aminobenzoic acid, a simple, sensitive, selective, and reproducible method for the cyanate analysis in aqueous ethanolic media is proposed. in this method, λ(exc) and λ(em) are 310 and 410 nm, respectively, and the limits of detection and quantification are 2.2 × 10(-7) and 6.7 × 10(-7) mol/l, respectively. under optimal conditions (ph = 4.5, 40% ethanol), a concentration of 5.0 ... | 2014 | 25220490 |
| factors affecting polyhydroxybutyrate accumulation in mesophyll cells of sugarcane and switchgrass. | polyhydroxyalkanoates are linear biodegradable polyesters produced by bacteria as a carbon store and used to produce a range of bioplastics. widespread polyhydroxyalkanoate production in c4 crops would decrease petroleum dependency by producing a renewable supply of biodegradable plastics along with residual biomass that could be converted into biofuels or energy. increasing yields to commercial levels in biomass crops however remains a challenge. previously, lower accumulation levels of the sho ... | 2014 | 25209261 |
| efficient open fermentative production of polymer-grade l-lactate from sugarcane bagasse hydrolysate by thermotolerant bacillus sp. strain p38. | lactic acid is one of the top 30 potential building-block chemicals from biomass, of which the most extensive use is in the polymerization of lactic acid to poly-lactic-acid (pla). to reduce the cost of pla, the search for cheap raw materials and low-cost process for lactic acid production is highly desired. in this study, the final titer of produced l-lactic acid reached a concentration of 185 g·l(-1) with a volumetric productivity of 1.93 g·l(-1)·h(-1) by using sugarcane bagasse hydrolysate as ... | 2014 | 25192451 |
| effect of sugarcane biopolymer gel injected in rabbit vocal fold. | alterations in the vocal folds that involve volume reduction and glottal closure failure result in exaggerated air escape during speech. for such situations, the use of implants or grafts of different materials has been proposed. | 2017 | 25153106 |
| addition of feruloyl esterase and xylanase produced on-site improves sugarcane bagasse hydrolysis. | accessory enzymes that assist biomass degradation could be used to improve the recovery of fermentable sugar for use in biorefineries. in this study, different fungal strains isolated from the amazon rainforest were evaluated in terms of their ability to produce feruloyl esterase (fae) and xylanase enzymes, and an assessment was made of the contributions of the enzymes in the hydrolysis of pretreated sugarcane bagasse. in the selection step, screening using plate assays was followed by shake fla ... | 2014 | 25151076 |
| species-specific detection and identification of fusarium species complex, the causal agent of sugarcane pokkah boeng in china. | pokkah boeng disease caused by the fusarium species complex results in significant yield losses in sugarcane. thus, the rapid and accurate detection and identification of the pathogen is urgently required to manage and prevent the spreading of sugarcane pokkah boeng. | 2014 | 25141192 |
| development of hemicellulolytic enzyme mixtures for plant biomass deconstruction on target biotechnological applications. | an essential step in the conversion of lignocellulosic biomass to ethanol and other biorefinery products is conversion of cell wall polysaccharides into fermentable sugars by enzymatic hydrolysis. the objective of the present study was to understand the mode of action of hemicellulolytic enzyme mixtures for pretreated sugarcane bagasse (psb) deconstruction and wheat arabinoxylan (wa) hydrolysis on target biotechnological applications. in this study, five hemicellulolytic enzymes-two endo-1,4-xyl ... | 2014 | 25077777 |
| polyhydroxyalkanoate biosynthesis and simultaneous remotion of organic inhibitors from sugarcane bagasse hydrolysate by burkholderia sp. | burkholderia sp. f24, originally isolated from soil, was capable of growth on xylose and removed organic inhibitors present in a hemicellulosic hydrolysate and simultaneously produced poly-3-hydroxybutyrate (p3hb). using non-detoxified hydrolysate, burkholderia sp. f24 reached a cell dry weight (cdw) of 6.8 g l(-1), containing 48 % of p3hb and exhibited a volumetric productivity (pp3hb) of 0.10 g l(-1) h(-1). poly-3-hydroxybutyrate-co-3-hydroxyvalerate copolymers (p3hb-co-3hv) were produced usin ... | 2014 | 25059637 |
| implications of stillage land disposal: a critical review on the impacts of fertigation. | stillage is the main wastewater from ethanol production, generated specifically in the step of distillation. regardless the feedstock, stillage contains high concentrations of organic matter, potassium and sulfates, as well as acidic and corrosive characteristics. currently almost the entire volume of stillage generated in brazilian distilleries is directed to the fertigation of sugarcane fields, due to its fertilizer character. however, the polluting potential of stillage characterizes its land ... | 2014 | 25058869 |
| perspectives on the production of polyhydroxyalkanoates in biorefineries associated with the production of sugar and ethanol. | polyhydroxyalkanoates (pha) are biodegradable and biocompatible bacterial thermoplastic polymers that can be obtained from renewable resources. the high impact of the carbon source in the final cost of this polymer has been one of the major limiting factors for pha production and agricultural residues, mainly lignocellulosic materials, have gained attention to overcome this problem. in brazil, production of 2nd generation ethanol from the glucose fraction, derived from sugarcane bagasse hydrolys ... | 2014 | 25043132 |
| structural and physicochemical characteristics of starch from sugar cane and sweet sorghum stalks. | the starch present in sugar cane and sorghum juice has been considered a problem to the sugar industry. the objective of this work was to study the structural and physicochemical characteristics of the starch present in sugar cane and sweet sorghum. sugar cane and sweet sorghum starches presented small granules (maximum 5.9 and 7.9 μm), a-type diffraction pattern, high degree of relative crystallinity (44.4 and 42.0%), and low amylose content (17.5 and 16.4%), respectively. sugar cane starch pre ... | 2014 | 25037392 |
| validation of novel reference genes for reverse transcription quantitative real-time pcr in drought-stressed sugarcane. | one of the most challenging aspects of rt-qpcr data analysis is the identification of reliable reference genes. ideally, they should be neither induced nor repressed under different experimental conditions. to date, few reference genes have been adequately studied for sugarcane (saccharum spp.) using statistical approaches. in this work, six candidate genes ( αtub, gapdh, h1, samdc, ubq, and 25s rrna) were tested for gene expression normalization of sugarcane root tissues from drought-tolerant a ... | 2014 | 24987730 |
| building the sugarcane genome for biotechnology and identifying evolutionary trends. | sugarcane is the source of sugar in all tropical and subtropical countries and is becoming increasingly important for bio-based fuels. however, its large (10 gb), polyploid, complex genome has hindered genome based breeding efforts. here we release the largest and most diverse set of sugarcane genome sequences to date, as part of an on-going initiative to provide a sugarcane genomic information resource, with the ultimate goal of producing a gold standard genome. | 2014 | 24984568 |
| effect of chemical factors on integrated fungal fermentation of sugarcane bagasse for ethanol production by a white-rot fungus, phlebia sp. mg-60. | bioethanol production through integrated fungal fermentation (iff), involving a unified process for biological delignification with consolidated biological processing by the white-rot fungus phlebia sp. mg-60, was applied to sugarcane bagasse. initial moisture content of the bagasse was found to affect biological delignification by mg-60, and 75% moisture content was suitable for selective lignin degradation and subsequent ethanol production. additives, such as basal media, organic compounds, or ... | 2014 | 24968109 |
| the impact of stress on the health of sugar cane cutters. | evaluate the impact of stress on sugar cane cutters and the prevalence of physical and psychological symptoms before and after harvest. | 2014 | 24897043 |
| description of helicotylenchus persiaensis sp. n. (nematoda: hoplolaimidae) from iran . | in order to identify the species of helicotylenchus steiner, 1945 present in iran, 497 soil and root samples were collected from the rhizosphere of different plants and localities throughout the country during 2009-2010. a new and several known species of helicotylenchus were identified from the collected material. h. persiaensis sp. n. is characterized by its short tail (8-11 µm , c = 54.2-79.0, c' = 0.6-1.2), usually with smooth terminus or with 1-3 very coarse annules, rarely with minor ventr ... | 2014 | 24872247 |
| biogeographical variation and population genetic structure of sporisorium scitamineum in mainland china: insights from issr and sp-srap markers. | a total of 100 sporisorium scitamineum isolates were investigated by inter simple sequence repeat (issr) and single primer-sequence related amplified polymorphism (sp-srap) markers. these isolates were clearly assorted into three distinct clusters regardless of method used: either cluster analysis or by principal component analysis (pca) of the issr, sp-srap, or issr + sp-srap data set. the total gene diversity (h t) and gene diversity between subpopulations (h s) were estimated to be 0.34 to 0. ... | 2014 | 24772015 |
| selfing rate estimation in sugarcane under unfavorable natural conditions of crossing by using microsatellite markers. | the self-fertilization or selfing rate estimation using microsatellite markers and its impact on survival and selection rate were evaluated in families derived from polycrosses that involved parents that were widely used in sugarcane breeding in brazil. these factors were evaluated under unfavorable natural conditions of flowering and crossing. after the germination test, the viable progeny were taken to the field for survival rate evaluation (4, 6, and 10 months) and phenotypic selection at pla ... | 2014 | 24737476 |
| paternity identification in sugarcane polycrosses by using microsatellite markers. | although polycrosses have been used to test the potential of cross-combination of a large number of sugarcane parents, the male parent of the half-sib progenies produced is unknown. the present study aimed to integrate the molecular marker technology to the sugarcane polycross approach by the application of microsatellite markers to identify the male parent of 41 elite clones derived from polycross families. ten microsatellite [single sequence repeats (ssrs)] primer pairs were used to identify t ... | 2014 | 24737475 |
| genetic variability among the chloroplast genomes of sugarcane (saccharum spp) and its wild progenitor species saccharum spontaneum l. | a striking characteristic of modern sugarcane is that all sugarcane cultivars (saccharum spp) share a common cytoplasm from s. officinarum. to explore the potential value of s. spontaneum cytoplasm, new saccharum hybrids with an s. spontaneum cytoplasm were developed at the united states department of agriculture-agricultural research service, sugarcane research laboratory, through a combination of conventional and molecular breeding approaches. in this study, we analyzed the genetic variability ... | 2014 | 24615073 |
| using multibiomarker approach as a tool to improve the management plan for a private reserve of natural heritage (rppn). | this study aimed to monitor an aquatic ecosystem during two different periods (dry and rainy season) on a protected area located inside a sugarcane farm, using the fish astyanax sp. as bioindicator. an integrated approach was adopted by combining the responses of well-known biomarkers: acetylcholinesterase, lipid peroxidation (lpo), catalase (cat), glutathione s-transferase (gst), micronucleus test, and liver histopathology. the activity of enzymes cat and gst was increased after the rainy seaso ... | 2014 | 24531322 |
| structural and functional characterization of the chaperone hsp70 from sugarcane. insights into conformational changes during cycling from cross-linking/mass spectrometry assays. | hsp70 cycles from an atp-bound state, in which the affinity for unfolded polypeptides is low, to an adp-bound state, in which the affinity for unfolded polypeptides is high, to assist with cell proteostasis. such cycling also depends on co-chaperones because these proteins control both the hsp70 atpase activity and the delivery of unfolded polypeptide chains. although it is very important, structural information on the entire protein is still scarce. this work describes the first cloning of a cd ... | 2014 | 24530624 |
| assessment of in vitro cyto/genotoxicity of sequentially treated electroplating effluent on the human hepatocarcinoma huh-7 cell line. | the present study compares in vitro toxicity of electroplating effluent after the batch treatment process with that obtained after the sequential treatment process. activated charcoal prepared from sugarcane bagasse through chemical carbonization, and tolerant indigenous bacteria, bacillus sp. strain ist105, were used individually and sequentially for the treatment of electroplating effluent. the sequential treatment involving activated charcoal followed by bacterial treatment removed 99% of cr( ... | 2014 | 24525376 |
| de novo assembly and transcriptome analysis of contrasting sugarcane varieties. | sugarcane is an important crop and a major source of sugar and alcohol. in this study, we performed de novo assembly and transcriptome annotation for six sugarcane genotypes involved in bi-parental crosses. the de novo assembly of the sugarcane transcriptome was performed using short reads generated using the illumina rna-seq platform. we produced more than 400 million reads, which were assembled into 72,269 unigenes. based on a similarity search, the unigenes showed significant similarity to mo ... | 2014 | 24523899 |
| expression analysis of sugarcane aquaporin genes under water deficit. | the present work is a pioneer study specifically addressing the aquaporin transcripts in sugarcane transcriptomes. representatives of the four aquaporin subfamilies (pip, tip, sip, and nip), already described for higher plants, were identified. forty-two distinct aquaporin isoforms were expressed in four ht-supersage libraries from sugarcane roots of drought-tolerant and -sensitive genotypes, respectively. at least 10 different potential aquaporin isoform targets and their respective unitags wer ... | 2013 | 24490055 |
| resistance of sugarcane cultivars to mahanarva fimbriolata (stål) (hemiptera: cercopidae). | the spittlebug mahanarva fimbriolata (stål) (hemiptera: cercopidae) is one of the most important pests of the sugarcane crop in brazil. despite of its importance, there is currently a lack of information regarding sugarcane cultivars' resistance to the spittlebug. therefore, our objective was to evaluate the response of sugarcane genotypes to this species. two experiments were carried out under laboratory conditions using a random block design with treatments in a factorial arrangement of 2 × 13 ... | 2014 | 27193410 |
| valorization of sugarcane bagasse ash: producing glass-ceramic materials. | some aluminosilicates, for example mullite and wollastonite, are very important in the ceramic and construction industries. the most significant glass-ceramic for building applications has wollastonite as the main crystal phase. in this work we report on the use of sugarcane bagasse ash (scba) to produce glass-ceramics with silicates as the major crystalline phases. the glasses (frits) were prepared by mixing ash, limestone (calcium and magnesium carbonates) and potassium carbonate as the fluxin ... | 2014 | 24463731 |
| evaluating the composition and processing potential of novel sources of brazilian biomass for sustainable biorenewables production. | the search for promising and renewable sources of carbohydrates for the production of biofuels and other biorenewables has been stimulated by an increase in global energy demand in the face of growing concern over greenhouse gas emissions and fuel security. in particular, interest has focused on non-food lignocellulosic biomass as a potential source of abundant and sustainable feedstock for biorefineries. here we investigate the potential of three brazilian grasses (panicum maximum, pennisetum p ... | 2014 | 24438499 |
| draft genome sequence of atrazine-utilizing bacteria isolated from indian agricultural soil. | we report the draft genome sequences of two tropical bacterial isolates capable of degrading the herbicide atrazine. alcaligenes sp. strain egd-ak7 and arthrobacter sp. strain ak-yn10 were isolated from indian agricultural soil in which sugarcane is grown, with a reported history of atrazine use. egd-ak7 has the atzabcdef genes and ak-yn10 has the trzn and atzbc genes for atrazine degradation. | 2014 | 24407646 |
| sugarcane fibre may prevents hairball formation in cats. | hair ingested by licking during cat grooming can eventually coalesce into solid masses in cat gastrointestinal tract. it is believed that dietary fibre might reduce formation of these trichobezoars (hairballs). the effects of two insoluble fibre sources added to kibble diets were evaluated with respect to trichobezoar faecal excretion. thirty-two cats and four diets were used in a randomised block design: a control diet without additional fibre, 10 % added sugarcane fibre, 20 % added sugarcane f ... | 2014 | 26101589 |
| draft genome sequence of pseudozyma brasiliensis sp. nov. strain ghg001, a high producer of endo-1,4-xylanase isolated from an insect pest of sugarcane. | here, we present the nuclear and mitochondrial genome sequences of pseudozyma brasiliensis sp. nov. strain ghg001. p. brasiliensis sp. nov. is the closest relative of pseudozyma vetiver. p. brasiliensis sp. nov. is capable of growing on xylose or xylan as a sole carbon source and has great biotechnological potential. | 2013 | 24356824 |
| a new species of burkholderia isolated from sugarcane roots promotes plant growth. | sugarcane is a globally important food, biofuel and biomaterials crop. high nitrogen (n) fertilizer rates aimed at increasing yield often result in environmental damage because of excess and inefficient application. inoculation with diazotrophic bacteria is an attractive option for reducing n fertilizer needs. however, the efficacy of bacterial inoculants is variable, and their effective formulation remains a knowledge frontier. here, we take a new approach to investigating diazotrophic bacteria ... | 2014 | 24350979 |
| water stress reveals differential antioxidant responses of tolerant and non-tolerant sugarcane genotypes. | the biochemical responses of the enzymatic antioxidant system of a drought-tolerant cultivar (iacsp 94-2094) and a commercial cultivar in brazil (iacsp 95-5000) grown under two levels of soil water restriction (70% and 30% soil available water content) were investigated. iacsp 94-2094 exhibited one additional active superoxide dismutase (cu/zn-sod vi) isoenzyme in comparison to iacsp 95-5000, possibly contributing to the heightened response of iacsp 94-2094 to the induced stress. the total gluta ... | 2014 | 24308986 |
| fungal pretreatment improves amenability of lignocellulosic material for its saccharification to sugars. | the sugarcane bagasse was biologically pretreated with three white-rot fungi; pleurotus florida, coriolopsis caperata rck 2011 and ganoderma sp. rckk-02, individually under solid-state fermentation. p. florida, c. caperata rck 2011 and ganoderma sp. rckk-02 degraded lignin up to 7.91, 5.48 and 5.58%, respectively. the lignocellulolytic enzymes produced by these fungi were also monitored during solid state fermentation of sugarcane bagasse. the fungal fermented sugarcane bagasse when hydrolyzed w ... | 2014 | 24274505 |
| culture-independent analysis of endophytic bacterial communities associated with brazilian sugarcane. | sugarcane is an economically important culture in brazil. endophytic bacteria live inside plants, and can provide many benefits to the plant host. we analyzed the bacterial diversity of sugarcane cultivar rb-72454 by cultivation-independent techniques. total dna from sugarcane stems from a commercial plantation located in paraná state was extracted. partial 16s rrna genes were amplified and sequenced for library construction. of 152 sequences obtained, 52% were similar to 16s rrna from pseudomon ... | 2013 | 24222230 |
| superoxide dismutase and ascorbate peroxidase improve the recovery of photosynthesis in sugarcane plants subjected to water deficit and low substrate temperature. | the physiological responses of c4 species to simultaneous water deficit and low substrate temperature are poorly understood, as well as the recovery capacity. this study investigated whether the effect of these abiotic stressors is cultivar-dependent. the differential responses of drought-resistant (iacsp94-2094) and drought-sensitive (iacsp97-7065) sugarcane cultivars were characterized to assess the relationship between photosynthesis and antioxidant protection by apx and sod isoforms under st ... | 2013 | 24184453 |
| emissions generated by sugarcane burning promote genotoxicity in rural workers: a case study in barretos, brazil. | to determine the possible genotoxic effect of exposure to the smoke generated by biomass burning on workers involved in manual sugar cane harvesting. | 2013 | 24112819 |
| bioelectricity versus bioethanol from sugarcane bagasse: is it worth being flexible? | sugarcane is the most efficient crop for production of (1g) ethanol. additionally, sugarcane bagasse can be used to produce (2g) ethanol. however, the manufacture of 2g ethanol in large scale is not a consolidated process yet. thus, a detailed economic analysis, based on consistent simulations of the process, is worthwhile. moreover, both ethanol and electric energy markets have been extremely volatile in brazil, which suggests that a flexible biorefinery, able to switch between 2g ethanol and e ... | 2013 | 24088415 |
| dynamic distribution of potassium in sugarcane. | in this work the distribution of potassium in sugarcane has been studied during its growth. the soil was prepared with natural fertilizers prepared with sugarcane bagasse. for the measurement of potassium concentration in each part of the plant, gamma-ray spectrometry was used to measure gamma-rays emitted from the radioisotope (40)k. the concentrations of potassium in roots, stems and leaves were measured every two to three months beginning about five months after planting the sugarcane. the re ... | 2013 | 24016872 |
| effect of unconventional carbon sources on biosurfactant production and its application in bioremediation. | the potential of an alkaliphilic bacterium klebsiella sp. strain rj-03, to utilize different unconventional carbon sources for the production of biosurfactant was evaluated. the biosurfactant produced using corn powder, potato peel powder, madhuca indica and sugarcane bagasse containing medium, exhibited significantly higher viscosity and maximum reduction in surface tension as compared to other substrates. among several carbon substrates tested, production of biosurfactant was found to be the h ... | 2013 | 23994788 |
| carbon partitioning in sugarcane (saccharum species). | focus has centered on c-partitioning in stems of sugarcane (saccharum sp.) due to their high-sucrose accumulation features, relevance to other grasses, and rising economic value. here we review how sugarcane balances between sucrose storage, respiration, and cell wall biosynthesis. the specific topics involve (1) accumulation of exceptionally high sucrose levels (up to over 500 mm), (2) a potential, turgor-sensitive system for partitioning sucrose between storage inside (cytosol and vacuole) and ... | 2013 | 23785381 |
| utilization of pentoses from sugarcane biomass: techno-economics of biogas vs. butanol production. | this paper presents the techno-economics of greenfield projects of an integrated first and second-generation sugarcane biorefinery in which pentose sugars obtained from sugarcane biomass are used either for biogas (consumed internally in the power boiler) or n-butanol production via the abe batch fermentation process. the complete sugarcane biorefinery was simulated using aspen plus®. although the pentoses stream available in the sugarcane biorefinery gives room for a relatively small biobutanol ... | 2013 | 23748087 |