Production of single-cell protein and cellulase from sugarcane bagasse: Effect of culture factors

El-Nawwi, S.A.; El-Kader, Amal Abd

doi:10.1016/0961-9534(96)00021-9

Cited by 14 publications

(5 citation statements)

References 11 publications

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“…Kauri and Kushner (322) have shown that separating Cytophaga cells from cellulose via an agar layer or membrane filters appears to enhance cellulose utilization; they suggest that this separation may dilute hydrolytic products, thus relieving catabolite repression of enzyme synthesis. Aerobic cellulolytic bacteria and fungi produce high cell yields characteristic of aerobic respiratory growth, and this has led to considerable technological interest in producing microbial cell protein from waste cellulosic biomass (175,567,594,623). In addition, many studies of aerobic cellulolytic microbes have focused on improving the yield and characteristics of cellulase enzymes.…”

Section: Taxonomic Diversitymentioning

confidence: 99%

Microbial Cellulose Utilization: Fundamentals and Biotechnology

Lynd

Weimer

Zyl³

et al. 2002

Microbiol Mol Biol Rev

4,046

2,868

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Fundamental features of microbial cellulose utilization are examined at successively higher levels of aggregation encompassing the structure and composition of cellulosic biomass, taxonomic diversity, cellulase enzyme systems, molecular biology of cellulase enzymes, physiology of cellulolytic microorganisms, ecological aspects of cellulase-degrading communities, and rate-limiting factors in nature. The methodological basis for studying microbial cellulose utilization is considered relative to quantification of cells and enzymes in the presence of solid substrates as well as apparatus and analysis for cellulose-grown continuous cultures. Quantitative description of cellulose hydrolysis is addressed with respect to adsorption of cellulase enzymes, rates of enzymatic hydrolysis, bioenergetics of microbial cellulose utilization, kinetics of microbial cellulose utilization, and contrasting features compared to soluble substrate kinetics. A biological perspective on processing cellulosic biomass is presented, including features of pretreated substrates and alternative process configurations. Organism development is considered for “consolidated bioprocessing” (CBP), in which the production of cellulolytic enzymes, hydrolysis of biomass, and fermentation of resulting sugars to desired products occur in one step. Two organism development strategies for CBP are examined: (i) improve product yield and tolerance in microorganisms able to utilize cellulose, or (ii) express a heterologous system for cellulose hydrolysis and utilization in microorganisms that exhibit high product yield and tolerance. A concluding discussion identifies unresolved issues pertaining to microbial cellulose utilization, suggests approaches by which such issues might be resolved, and contrasts a microbially oriented cellulose hydrolysis paradigm to the more conventional enzymatically oriented paradigm in both fundamental and applied contexts

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Section: Taxonomic Diversitymentioning

confidence: 99%

Microbial Cellulose Utilization: Fundamentals and Biotechnology

Lynd

Weimer

Zyl³

et al. 2002

Microbiol Mol Biol Rev

4,046

2,868

View full text Add to dashboard Cite

show abstract

“…Chaetomium strains, however, with the exception of C. cellulolyticum , produce mycotoxins that are cytotoxic in HeLa cells [ 34 ]. Aspergillus terreus degrades alkali-pretreated sugarcane bagasse to produce SCP; optimum conditions yield a protein content of 210–280 g kg −1 [ 7 ]. Candida tropicalis , C. langeronii , and C. arborea have been used with sugar cane bagasse and rice straw hydrolysate to produce SCP [ 27 , 30 , 42 ].…”

Section: Introductionmentioning

confidence: 99%

Single-cell Protein and Xylitol Production by a Novel Yeast Strain Candida intermedia FL023 from Lignocellulosic Hydrolysates and Xylose

Zhao

et al. 2017

Appl Biochem Biotechnol

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Yeasts are good candidates to utilize the hydrolysates of lignocellulose, the most abundant bioresource, for bioproducts. This study aimed to evaluate the efficiencies of single-cell protein (SCP) and xylitol production by a novel yeast strain, Candida intermedia FL023, from lignocellulosic hydrolysates and xylose. This strain efficiently assimilated hexose, pentose, and cellubiose for cell mass production with the crude protein content of 484.2 g kg−1 dry cell mass. SCP was produced by strain FL023 using corncob hydrolysate and urea as the carbon and nitrogen sources with the dry cell mass productivity 0.86 g L−1 h−1 and the yield of 0.40 g g−1 sugar. SCP was also produced using NaOH-pretreated Miscanthus sinensis straw and corn steep liquor as the carbon and nitrogen sources through simultaneous saccharification and fermentation with the dry cell productivity of 0.23 g L−1 h−1 and yield of 0.17 g g−1 straw. C. intermedia FL023 was tolerant to 0.5 g L−1 furfural, acetic acid, and syringaldehyde in xylitol fermentation and produced 45.7 g L−1 xylitol from xylose with the productivity of 0.38 g L−1 h−1 and the yield of 0.57 g g−1 xylose. This study provides feasible methods for feed and food additive production from the abundant lignocellulosic bioresources.

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“…94 Other attempts include SCP production on various crop straws [95][96][97][98] and sugarcane bagasse. [99][100][101]…”

Section: Single-cell Proteinmentioning

confidence: 99%

“…A high yield of SCP was produced by A. niger in SSF of rice bran waste augmented with sodium nitrate 94 . Other attempts include SCP production on various crop straws 95–98 and sugarcane bagasse 99–101 …”

Section: Strategies For Valorization Of Crop Residuesmentioning

confidence: 99%

Strategies for valorization of crop residues into biofuels and other value‐added products

Kamusoko

Jingura

Parawira

et al. 2021

Biofuels Bioprod Bioref

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Agricultural systems produce vast amounts of crop residues (CR) as by-products. More than 200 billion tonnes per year of CR are produced worldwide. They are mostly used as animal feed or disposed of by incorporation into soil for fertility purposes and by burning. Traditional CR management practices have environmental and techno-economic implications. Crop residues are an excellent bioresource, with multiple untapped applications. There is a significant lack of knowledge about commercializing the conversion of CR into value-added products in a sustainable way. A biorefinery concept is an important option that can transform CR into useful products. This paper reviews the potential state-of-the-art options for valorization of CR into multiple product streams. The paper focuses on 13 products. These are biogas, bioethanol, biobutanol, biohydrogen, biomethanol, pyrolytic products, enzymes, bioactive compounds, animal feed, mushroom, single-cell protein, organic acids, and biocomposites. The product streams can be divided into three categories: biofuels, animal feed and food, and phytochemicals. Biofuel production is the most promising strategy for the valorization of CR at large-scale biorefineries. Anaerobic digestion and fermentation are preferred to thermochemical conversions because they are cost effective and have improved conversion efficiency.

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Production of single-cell protein and cellulase from sugarcane bagasse: Effect of culture factors

Cited by 14 publications

References 11 publications

Microbial Cellulose Utilization: Fundamentals and Biotechnology

Microbial Cellulose Utilization: Fundamentals and Biotechnology

Single-cell Protein and Xylitol Production by a Novel Yeast Strain Candida intermedia FL023 from Lignocellulosic Hydrolysates and Xylose

Strategies for valorization of crop residues into biofuels and other value‐added products

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