Pretreatment of bagasse by nonionic surfactant for the enzymatic hydrolysis

Kurakake, Masahiro; Ooshima, Hiroshi; Kato, Jyoji; Harano, Yoshio

doi:10.1016/0960-8524(94)90048-5

Cited by 83 publications

(40 citation statements)

References 6 publications

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“…Previous studies (Kamande 1994) have shown that at concentrations between 0.05 and 0.5% (vol vol -1 ), Tween 80 increases adsorption of microbial protein to barley straw and enhances cellulose degradation. Kurakake et al (1994) postulated that nonionic surfactants increase the enzymatic degradation of bagasse, a forage inherently recalcitrant to digestion, by enhancing removal of hydrophobic degradation products and lignin from the site of digestion. In the present study, Tween 80 increased association of the enzymes in preparation A with cotton and filter paper, suggesting that it may be promoting binding of exogenous enzymes to their substrate.…”

Section: Discussionmentioning

confidence: 99%

Effect of a surfactant and exogenous enzymes on digestibility of feed and on growth performance and carcass traits of lambs

McAllister¹,

Stanford²,

Bae³

et al. 2000

Can. J. Anim. Sci.

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. 2000. Effect of a surfactant and exogenous enzymes on digestibility of feed and on growth perfomance and carcass traits of lambs. Can. J. Anim. Sci. 80: [35][36][37][38][39][40][41][42][43][44]. The effects of Tween 80 on the stability and substrate binding capacity of two commercially available enzyme preparations were studied in vitro. After 1 wk of incubation, endoglucanase activity was higher (P < 0.05) in the presence of 0.02 or 0.2% (vol vol -1 ) Tween 80 than without this surfactant. Tween 80 increased (P < 0.05) protein binding both to filter paper and to cotton fibres. Digestibility and feedlot experiments were conducted with Dorset and Romanov × Suffolk lambs, respectively, given forage-and concentrate-based diets. The diets were untreated or sprayed with the enzyme preparations, Tween 80 or a mixture of both. With the concentrate diet, treatment with enzymes + surfactant reduced (P < 0.05) intake of feed dry matter and N, acid detergent fibre digestibility, N digestion and microbial N production, relative to treatment with either additive alone. Treating the concentrate diet with enzymes increased (P < 0.05) N retention (g d -1 ) by the lambs, as compared to untreated diet. With the forage diet, neutral detergent fibre digestibility was higher with Tween 80 alone than with enzymes + surfactant. In the feedlot experiment, treating the forage diet with surfactant reduced (P < 0.05) dry matter intake and daily gain, relative to untreated diet, and increased (P < 0.05) the number of days to finish. Feed conversion efficiency (gain feed -1 ) of lambs fed the concentrate diet was lower (P < 0.05) when the diet was treated with surfactant than with enzymes. Treating the concentrate diet with enzymes + surfactant increased (P < 0.05) the number of days required to finish the lambs. Although Tween 80 appeared to increase the stability and substrate binding capacity of enzymes in the laboratory, it did not enhance the effects of the enzymes on nutrient digestibility or growth performance in animal feeding studies. Nous étudions in vitro les effets de Tween 80 sur la stabilité et sur la capacité de se fixer aux substrats de deux préparations enzymatiques commerciales. Au bout d'une semaine d'incubation, l'activité de l'endoglucanase était plus forte (P < 0,05) en présence de 0,02 ou de 0,2 % (en volume) de Tween 80 que sans le surfactant. En outre, la fixation de la protéine enzymatique au papier filtre et à des fibres de coton était accrue (P < 0,05). Des expériences en cages de digestibilité et en parquets d'engraissement étaient conduites, respectivement, sur des agneaux Dorset et sur des agneaux Romanov × Suffolk, recevant des aliments complets à forte proportion de fourrage (HPF) ou de concentré (HPC). Lors du mélange des ingrédients, les aliments étaient aspergés ou non d'une ou l'autre des deux préparations enzymatiques en solution, avec ou sans Tween 80 ou de Tween 80 seulement. Traité aux enzymes + surfactant, l'aliment HPC causait une diminution (P < 0,05) de l'ingéré de m.s. et de la digestibilité d...

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Section: Discussionmentioning

confidence: 99%

Effect of a surfactant and exogenous enzymes on digestibility of feed and on growth performance and carcass traits of lambs

McAllister¹,

Stanford²,

Bae³

et al. 2000

Can. J. Anim. Sci.

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“…This was attributable to the pretreatment effect of hydrochloric acid on enzymatic hydrolysis with cellulase. The cellulase affinity to cellulose was improved by removal of the rigid arabinoxylan coverage area, 17) and as shown in Table 2, the yield from cellulose was improved up to 79 83%. In general, cellulose has a crystalline structure that is not easy to break down with pretreatment at low temperature.…”

Section: Resultsmentioning

confidence: 97%

Production of L-Arabinose and Xylose from Corn Hull and Bagasse

et al. 2005

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“…al. [38] did not give any degree of treatment to bagasse before their bioconversion study and measured Total Nitrogen, Cellulose, Hemicellulose, Lignin and Ash Content, Kurakake et.al [32] suggested that enzymatic hydrolysis process pretreatment causes hydrophobic degradation. In the present study no pretreatment technology was used.…”

Section: Discussionmentioning

confidence: 99%

“…Kurakake et.al. [32] removed 76% of lignin by pretreatment of bagasse waste by cyclohexanol mixture. While Raul et.…”

Section: Discussionmentioning

confidence: 99%

Effect of Moisture Content Variation Over Kinetic Reaction Rate During Vermicomposting Process

Palsania¹

2008

Appl Ecol Env Res

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Abstract. Even though vermicomposting is an age old process, due to rapid changes in technology in present scenario it is essential to change such process with application of advanced technique available. The same attempt is made by authors during series of their experiments of bioconversion over solid waste containing substrates cellulose into useful biofertilizer. In the present study the substrate sugarcane bagasse taken as carbon source is bio-converted with species of earthworm Eudrilus eugeniae. The role of moisture content in the process is studied by varying moisture content from 45 ± 5%, 55 ± 5%, 65 ± 5%, 75 ± 5% to 85 ± 5%. It is observed that the moisture content 75 ± 5% is the optimal at which the vermicomposting is fastest. Other relative parameters observed varied with maximum changes in range of 75 ± 5% of moisture content. The maximum kinetic reaction rate is recorded at the same level of moisture content.

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Pretreatment of bagasse by nonionic surfactant for the enzymatic hydrolysis

Cited by 83 publications

References 6 publications

Effect of a surfactant and exogenous enzymes on digestibility of feed and on growth performance and carcass traits of lambs

Effect of a surfactant and exogenous enzymes on digestibility of feed and on growth performance and carcass traits of lambs

Production of L-Arabinose and Xylose from Corn Hull and Bagasse

Effect of Moisture Content Variation Over Kinetic Reaction Rate During Vermicomposting Process

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