Enzyme Technology for the Degradation of Lignocellulosic Waste

Haldar, Swarrna; Banerjee, Santo

doi:10.1002/9783527832064.ch10

Cited by 2 publications

(2 citation statements)

References 38 publications

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“…As mentioned earlier, rice straw is a lignocellulosic biomass consisting of cellulose, hemicellulose, and lignin. Cellulose consists of monomeric D-glucose subunits connected by glycosidic linkages and is categorised as crystalline or amorphous [37,38]. Hemicellulose contains pentose, hexose, uronic acids, etc.…”

Section: Rice Straw Compositionmentioning

confidence: 99%

Rice Straw Utilisation for Bioenergy Production: A Brief Overview

2022

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Unsustainable rice straw management causes environmental impacts; hence, utilisation of rice straw for bioenergy is a promising strategy for sustainable rice straw management. Although rice straw has a high potential for bioenergy generation, the whole production cycle and application may cause environmental damage that is not fully understood. Hence, environmental performance studies are required to determine the most effective rice straw utilisation options. A comprehensive approach, such as life-cycle assessment (LCA), can give comprehensive information on the possible environmental effects of rice straw utilisation for bioenergy. Therefore, this study briefly overviews the LCA of rice straw utilisation for bioenergy production. It is found that utilisation of rice straw for bioenergy could reduce global warming potential compared to energy production from fossil fuels. However, it is suggested that other impact categories in LCA be evaluated in the bioenergy production from rice straw research to determine the overall sustainability of the production.

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Section: Rice Straw Compositionmentioning

confidence: 99%

Rice Straw Utilisation for Bioenergy Production: A Brief Overview

2022

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“…These microorganisms have vital roles in biomass decomposition, carbon and nutrient cycling, and linking plant and ecosystem functions (He et al, 2017). Since forest materials mainly plant biomass, some microorganisms, mostly fungi, are capable of degrading lignocellulosic materials with the help of three key enzymes, cellulase, laccase, and lipase (Haldar and Banerjee, 2022). Cellulase degrades cellulose, laccase, together with other ligninolytic enzymes, degrades lignin, and lipase serves as a catalyst by breaking down acids and resin that are formed during lignocellulose degradation (de Melo et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Isolation, Characterization, and Lipase Production of Lipolytic Yeasts Isolated from Mt. Makiling Forest Reserve, Philippines

2022

Int. J. Biosci.

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Mt. Makiling Forest Reserve (MMFR) is an untapped source of microorganisms that have great potential for the production of industrially important enzymes like lipases. In this study, yeasts were isolated from various forest materials by serial dilution and plating methods. Out of the 185 isolated putative yeasts, 54 showed lipolytic activity in the plate assay using a lipase production medium. These yeasts were secondarily screened by a liquid assay using basal mineral medium (BMM) with 2.0% (v/v) olive oil. Top putative yeasts based on measured cell density after incubation in BMM were molecularly identified as Candida duobushaemulonis, C. jaroonii, C. quercuum, Vanrija humicola, and Wickerhamomyces sp. by ITS-5.8S sequencing. Further screening of the identified lipolytic yeasts using non-enriched (with 0.5% peptone) and enriched (with 5.0% peptone) medium revealed that Wickerhamomyces sp. SS-2 was the top lipase-producing yeast, with the highest measured lipolytic activity of 0.62 U/mL after 48 h of enriched media fermentation. The performance of the select yeast was then tested on different fermentation mediums with different compositions. Medium composed of 0.2% yeast extract, 0.05% KH2PO4, 0.05% K2HPO4, 0.05% MgSO4.H2O, 0.01% CaCl2, 0.01% NaCl, and 1.0% (v/v) olive oil, at pH 6.0, was found best for the select yeast's lipase productivity. Furthermore, olive oil as the main plant oil and the use of a 48h-old slant seed culture were found best for the lipase production of the select yeast Wickerhamomyces sp. SS-2.

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Enzyme Technology for the Degradation of Lignocellulosic Waste

Cited by 2 publications

References 38 publications

Rice Straw Utilisation for Bioenergy Production: A Brief Overview

Rice Straw Utilisation for Bioenergy Production: A Brief Overview

Isolation, Characterization, and Lipase Production of Lipolytic Yeasts Isolated from Mt. Makiling Forest Reserve, Philippines

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