Enzymatic Hydrolysis of Cellulose in Lignocellulosic Materials

Marsden, Warwick L.; Gray, Peter P.; Mandels, Mary

doi:10.3109/07388558509150785

Cited by 80 publications

(25 citation statements)

References 212 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The uses of strong base solution in this study aims to make the solid sago waste can undergo a delignification process before going into the fermentation process. Delignification of solid sago waste aims to damage the structure of lignin and a part of hemicellulose and also swelling of cellulose structures [20]. Saponification of ester bonds between lignin and hemicellulose residues makes cellulose more open and easier to interact with enzymes, and can decrease the degree of polymerization and crystallinity of cellulose structures [21].…”

Section: Results Analysis Stagementioning

confidence: 99%

“…Delignification of sago pulp aims to damage the lignin structure and swell the cellulose structure [20]. According to Saparianti [28], lignin which is a substance of lignocellulose which is a component of crude fiber will prevent enzyme penetration into substrate.…”

Section: Effect Of Fermentation Time On Crude Fiber and Crude Proteinmentioning

confidence: 99%

“…From both figures it can be seen that soaking pretreatment is best way to help raise the crude protein content in the solid sago waste followed by heating pretreatment and without pretreatment. Delignification of solid sago waste aims to damage the structure of lignin and swelling of cellulose structures [20]. According to Saparianti [28], lignin which is a substance of lignocellulose which is a component of crude fiber will prevent enzyme penetration into substrate.…”

Section: Figmentioning

confidence: 99%

See 2 more Smart Citations

Livestock Feed Production from Sago Solid Waste by Pretreatment and Anaerobic Fermentation Process

Sumardiono

et al. 2018

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract. Food needs in Indonesia is increasing, including beef. Today, Indonesia has problem to do selfsufficiency in beef. The cause of the problem is the quality of local beef is still lower compared with imported beef due to the quality of livestock feed consumed. To increase the quality of livestock is through pretreatment and fermentation. Source of livestock feed that processed is solid sago waste (Arenga microcarpa), because in Indonesia that is relatively abundant and not used optimally. Chemical pretreatment process for delignification is by using NaOH solution. The purposes of this research are to study NaOH pretreatment, the addition of Trichoderma sp, and fermentation time to improve the quality of sago solid waste as livestock feed through anaerobic fermentation. The variables used are addition or without addition (4%w NaOH solution and Trichoderma sp 1%w) and fermentation time (7, 14 and 21 days), with the response of crude fiber and protein. The result of this research shows that the pretreatment with soaking of NaOH solution, addition of Trichoderma sp and 14 days of fermentation was more effective to improve the quality of solid sago waste with decrease of crude fiber from 33.37% to 17.36% and increase of crude protein from 4.00% to 7.96%.

show abstract

Section: Results Analysis Stagementioning

confidence: 99%

Section: Effect Of Fermentation Time On Crude Fiber and Crude Proteinmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

See 1 more Smart Citation

Livestock Feed Production from Sago Solid Waste by Pretreatment and Anaerobic Fermentation Process

Sumardiono

et al. 2018

MATEC Web Conf.

View full text Add to dashboard Cite

show abstract

“…The concentration of the lignified cell walls shows that these were not degraded by the enzyme preparations. This is because lignified materials contain few hydrolysable bonds and are poorly susceptible to hydrolytic enzymes (Marsden and Gray, 1986).…”

Section: Effects Of Cell Wall Degrading Enzyme Preparations On Cassavmentioning

confidence: 99%

“…This is presumably because the Viscozyme preparation has cellulase enzyme activity (Novozymes, 2008). (Marsden and Gray, 1986).…”

Section: Effects Of the Treatment On Cassava Cell Wall Structural Commentioning

confidence: 99%

Complementary effects of cell wall degrading enzymes together with lactic acid fermentation on cassava tuber cell wall breakdown

Adetunji

Clou

Walford

et al. 2016

Industrial Crops and Products

View full text Add to dashboard Cite

The Reactivity of Porcine Pancreatic alpha-Amylase Towards Native, Defatted and Heat-moisture Treated Potato Starches Before and After Hydroxypropylation

Perera

Hoover²

1998

Starch/Stärke

View full text Add to dashboard Cite

Alpha-amylase (1,4-a-D glucan glucanohydrolase, EC 3.2.1.1) catalyze the hydrolysis (endo attack) of the a(1 ® 4) glycosidic bond in amylose, amylopectin and related oligosaccharides. Robyt and French [1] proposed that a-amylases have a multiple attack mechanism. In this mechanism, once the enzyme forms a complex with the substrate and forms the first cleavage, the enzyme remains with one of the fragments of the original substrate and catalyzes the hydrolysis of several bonds before it dissociates and forms a new active complex with another substrate molecule [2]. The direction of the multiple attack for porcine pancreatic a-amylase is from the reducing end towards the non-reducing end [2]. Robyt [2] have shown that the products of hydrolysis of porcine pancreatic a-amylase (PPA) are mainly maltose, maltotriose and maltotetraose. PPA has been shown to have 5-D glucose subsites with catalytic groups between the second and third subsite from the reducing end subsite [1]. PPA has been shown to catalyze the reaction shown below:

show abstract

Enzymatic Hydrolysis of Cellulose in Lignocellulosic Materials

Cited by 80 publications

References 212 publications

Livestock Feed Production from Sago Solid Waste by Pretreatment and Anaerobic Fermentation Process

Livestock Feed Production from Sago Solid Waste by Pretreatment and Anaerobic Fermentation Process

Complementary effects of cell wall degrading enzymes together with lactic acid fermentation on cassava tuber cell wall breakdown

The Reactivity of Porcine Pancreatic alpha-Amylase Towards Native, Defatted and Heat-moisture Treated Potato Starches Before and After Hydroxypropylation

Contact Info

Product

Resources

About