Chemical treatments for increasing the digestibility of cotton straw: 1. Effect of ozone and sodium hydroxide treatments on rumen metabolism and on the digestibility of cell walls and organic matter

Ben‐Ghedalia, D.; Shefet, G.; Dror, Yosef

doi:10.1017/s0021859600033542

Cited by 48 publications

(7 citation statements)

References 21 publications

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“…Highertemperature (> 160 8C) continuous methods are generally employed for low solid loadings (5 to 10 %), [309] whereas the lowtemperature (< 160 8C) batch process is used for high solid loadings (10 to 40 %). [310] Ozone has been often used to degrade lignin and hemicellulose in many lignocellulose materials, such as rice straw, [311] bagasse, green hay, peanut, pine, [312] cotton straw [313] and popular sawdust. [314] Though this process is advantageous in terms of effective removal of lignin at room temperature and pressure conditions without affecting cellulose, quantitative use of ozone makes the process expensive.…”

Section: Lignocellulose Pretreatmentmentioning

confidence: 99%

Next‐Generation Biofuels: Survey of Emerging Technologies and Sustainability Issues

Zinoviev¹,

et al. 2010

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Next-generation biofuels, such as cellulosic bioethanol, biomethane from waste, synthetic biofuels obtained via gasification of biomass, biohydrogen, and others, are currently at the center of the attention of technologists and policy makers in search of the more sustainable biofuel of tomorrow. To set realistic targets for future biofuel options, it is important to assess their sustainability according to technical, economical, and environmental measures. With this aim, the review presents a comprehensive overview of the chemistry basis and of the technology related aspects of next generation biofuel production, as well as it addresses related economic issues and environmental implications. Opportunities and limits are discussed in terms of technical applicability of existing and emerging technology options to bio-waste feedstock, and further development forecasts are made based on the existing social-economic and market situation, feedstock potentials, and other global aspects. As the latter ones are concerned, the emphasis is placed on the opportunities and challenges of developing countries in adoption of this new industry.

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Section: Lignocellulose Pretreatmentmentioning

confidence: 99%

Next‐Generation Biofuels: Survey of Emerging Technologies and Sustainability Issues

Zinoviev¹,

et al. 2010

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“…Esse fator, além de dificultar sua utilização como fonte energética para ruminantes, limita sua decomposição no meio ambiente, gerando problemas ambientais e econômicos para a indústria têxtil. Alguns autores referiram-se ao resíduo do beneficiamento têxtil do algodão como um "alimento em potencial" para ruminantes (BEN-GHEDALIA et al, 1983;BANYS et al, 1998;ALMEIDA, 2001). Banys et al (1998), estudando a composição química e a degradabilidade de resíduos da indústria têxtil do algodão (cottonea, batedor, batedor 2, borra, sillow e lixadeira), concluíram que esses possuem baixos valores de proteína bruta e altos de fibra, apresentando alto potencial de degradabilidade, devido à fração "b", mas, baixa degradabilidade efetiva.…”

Section: Introductionunclassified

Avaliação das alterações bromatológicas e de degradabilidade do resíduo de lixadeira do algodão após tratamento biológico com Pleurotus sajor-caju

Castro

Paiva²,

Dias³

et al. 2004

Ciênc. agrotec.

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RESUMOCom objetivo de avaliar possibilidades de melhorar o valor nutritivo e a degradabilidade do resíduo de lixadeira do algodão utilizando tratamento biológico de bioconversão com cogumelo Pleurotus sajor-caju, conduziu-se este experimento nos Departamentos de Zootecnia e Biologia da UFLA, Lavras/MG, no período de julho de 2002 a janeiro de 2003. Realizou-se ensaio de produção do cogumelo Pleurotus sajor-caju em dois substratos diferentes (C1 e C2) compostos basicamente de resíduo de lixadeira; após a produção, submeteu-se o resíduo in natura e resultante dos tratamentos C1 e C2 à análise bromatológica e ensaio de degradabilidade de matéria seca e fibra em detergente neutro. Em relação ao resíduo in natura, os tratamentos mostraram-se eficientes em reduzir a fração fibra em detergente neutro e fibra em detergente ácido de 95,24% para 81,11% e 71,21% para fibra em detergente neutro e de 91,16% para 76,85% e 71,14% para fibra em detergente ácido, respectivamente, para C1 e C2. Os tratamentos aumentaram a degradabilidade efetiva da matéria seca e da fibra em detergente neutro do resíduo de lixadeira de algodão de 40,87% para 60,55% e 56,05% e de 44,15% para 65,42% e 67,83%, respectivamente. Termos para indexação:Alimento alternativo, biotransformação, cogumelo comestível, resíduo industrial. ABSTRACTThe objective of the experiment was to evaluate the bio-conversion treatment to enhance the nutritional value and degradability of cotton textile mill waste, using the fungi Pleurotus sajor-caju. The experiment was conducted at the Departments of Biology and Animal Science of the Universidade Federal de Lavras (UFLA), between July 2002 and January 2003. Bio-conversion was induced by the use of the residue as the main component in a substrate bed for cultivation of edible mushrooms (C1 and C2). In comparison to the untreated cotton textile mill waste, two bio-conversion alternatives by Pleurotus sajor-caju were tested. After mushroom production, samples of the treated material were submitted to in situ degradability tests and chemical composition. Results indicated that C1 and C2 treatments decreased fibrous fractions (ADF and NDF) and increased CP of cotton textile mill waste, improving the chemical composition. C1 and C2 treatments also resulted in an increased of soluble fraction (a), the degradation rate (c), and decreased insoluble potential degradable fraction (b); increasing effective degradability of DM and NDF of cotton textile mill waste.

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“…One possible explanation could be that organic acids present in OCS hydrolyzed labile structural monosaccharide residues from the cell walls (Table I), as suggested by Ben-Ghedalia and Yosef (1989b). We have conducted several digestibility and feeding experiments with OCS (Ben-Ghedalia et al, 1983;Solomon et al, unpublished results) with positive nutritional results and no toxic effects. Progress in ozonation technology will facilitate the application of OCS as an ensiling agent.…”

Section: Discussionmentioning

confidence: 89%

Fermentation of alfalfa silages with ozonated cotton stalks added

Ben‐Ghedalia¹,

Miron²,

Yosef³

1991

J. Agric. Food Chem.

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The effect on fermentation patterns and silage properties of ensiling alfalfa (A) with ozonated cotton stalks (OCS), added at 10, 20, and 30% of dry matter, was explored in laboratory silos. Silos were opened after 90 days, and the silages were analyzed. DM loss was highest for the untreated A silage (14.6%). DM loss in the A + OCS silages was 1-495, much lower than in the wilted A silage (7.4%).Reducing sugars and fructose were the major carbohydrates fermented; pectin uronic acid (PUA) proved resistant to 90 days of fermentation. OCS is acidic (pH 2); therefore, the pH of the 10% OCS + A mixture dropped to 5.2 immediately at mixing. This allowed a fermentation to proceed, as reflected from sugar fermentation and lactic acid production (3.55%). At 20 and 30% OCS + A mixtures, pH decreased immediately to 4.47 and 4.26, respectively, so the fermentation was partly or completely inhibited. Protein, extensively degraded in the A silage, was preserved in the A + 30% OCS silage. Wilted A and A + 20% OCS silages were comparable in protecting the alfalfa forage protein.

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Chemical treatments for increasing the digestibility of cotton straw: 1. Effect of ozone and sodium hydroxide treatments on rumen metabolism and on the digestibility of cell walls and organic matter

Cited by 48 publications

References 21 publications

Next‐Generation Biofuels: Survey of Emerging Technologies and Sustainability Issues

Next‐Generation Biofuels: Survey of Emerging Technologies and Sustainability Issues

Avaliação das alterações bromatológicas e de degradabilidade do resíduo de lixadeira do algodão após tratamento biológico com Pleurotus sajor-caju

Fermentation of alfalfa silages with ozonated cotton stalks added

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