A comprehensive review on pre-treatment strategy for lignocellulosic food industry waste: Challenges and opportunities

Ravindran, Rajeev; Jaiswal, Amit K.

doi:10.1016/j.biortech.2015.07.106

Cited by 461 publications

(187 citation statements)

References 77 publications

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“…Through the biological process effective lignin degradation relies on the lignolytic enzymes presented by basidiomycete such as lignin peroxidase, manganese peroxidase and laccase [15][16][17][18]. Biological pretreatment using fungi in nature for ethanol production from agricultural residues is a favorable method because of immense benefits such as environmentally friendly and thriftily feasible method for enhancing lignocellulosic digestion rate [19].…”

Section: Introductionmentioning

confidence: 99%

Lignin Degradation by Fungal Pretreatment: A Review

Madadi¹,

Abbas²

2017

J Plant Pathol Microbiol

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Lignin is regarded as the most plentiful aromatic polymer contains both non-phenolic and phenolic structures. It makes the integral part of secondary wall and plays a significant role in water conduction in vascular plants. Many fungi, bacteria and insects have ability to decrease this lignin by producing enzymes. Among these fungi are the major player in degradation of lignin. These fungi produce enzymes such as lignin peroxidases and laccases. The well-known fungi which degrades lignin are white, brown, soft-rot fungi, and deuteromycetes. Currently these fungi are utilized to reduce lignin to produce ecofriendly bioenergy. The primary aim of this paper is to describe the lignin degradation by biological pre-treatment using fungi (white-, brown-soft-rot fungi and molds), as well as biochemical application. Besides, Molecular methods and enzymes regulation engaged in fungal pre-treatment and some of the factors affecting pretreatment will also be briefly discussed.

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Section: Introductionmentioning

confidence: 99%

Lignin Degradation by Fungal Pretreatment: A Review

Madadi¹,

Abbas²

2017

J Plant Pathol Microbiol

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“…Although crop straw supply is adequate and the price is low, the complexity and high cost of conversion process have limited the industrial application of this renewable resource. In the bioprocessing of lignocellulose bioconversion to fuels, the fermentable carbohydrates including cellulose and hemicellulose have to be exposed for hydrolytic enzymes and microbes [2]. Pretreatment technology has been widely studied as a key step for the efficient conversion of lignocellulosic biomass to biofuels [3,4].…”

Section: Introductionmentioning

confidence: 99%

Pretreatment of Agricultural Crop Wastes for Biofuels Production

Ai¹,

Zheng²,

Zheng³

et al. 2018

Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)

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Abstract.Crop straw is an abundant but still underutilized renewable resource. Most of agricultural crop wastes contain about 70% fermentable components. Pretreatment technology aims to expose the fermentable carbohydrates for hydrolytic enzymes and microbes in downstream biofuels production process. An ideal pretreatment method satisfies following criteria: greatly enhancing the enzymatic efficiency of cellulose, minimizing the loss of fermentable carbohydrates, minimizing the formation of inhibitors, and high cost effectiveness. The most studied pretreatment methods include acid pretreatment, alkaline pretreatment, steam explosion, biological pretreatment, and so on. The effects of pretreatment methods on increasing the biodigestibility include increase of surface areas, reduce of cellulose crystallinity, hemicellulose solubilization, delignification, inhibitors production. Different pretreatment method offers its advantages, and also have its own shortcomings. When selecting a pretreatment method and optimizing operation conditions, not only the characteristics of lignocellulosic feedstock but also the target product and fermentation process need to be considered.

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“…Furthermore, it influences the overall cost of production by decreasing detoxification, enzyme loading, and other variables. The major factors that govern enzymatic saccharification of lignocellulose are chemical composition of the biomass (especially lignin content), crystallinity of cellulose, available surface area and the presence of acetyl groups (Ravindran & Jaiswal, 2016). An efficient pretreatment strategy should maximise the efficacy of enzymatic saccharification while minimising the formation of inhibitors along with effluent generation while operating in low energy demand, capital and operational costs (Raghavi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%