Technological advances for improving fungal cellulase production from fruit wastes for bioenergy application: A review

Srivastava, Neha; Srivastava, Manish; Alhazmi, Alaa; Kausar, Tahreem; Haque, Shafiul; Singh, Rajeev; Ramteke, Pramod W.; Mishra, Pradeep Kumar; Tuohy, Maria G.; Leitgeb, Maja; Gupta, Vijai Kumar

doi:10.1016/j.envpol.2021.117370

Cited by 30 publications

(6 citation statements)

References 104 publications

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“…Cellulases can also be made use of by various industrial segments, including food, textiles, detergents, pulp, and paper industries (Wang et al 2005). However, the structure of these enzymes is diversified, and includes the group of endoglucanases (EC 3.2.1.4), which are responsible for the hydrolysis of internal bonds, exoglucanases (EC 3.2.1.91), which produce cellobiose from chain-end hydrolysis, and β-glucosidases (EC 3.2.1.21) that act on cellobiose hydrolysis for its final conversation into glucose (KUHAD et al, 2016;Srivastava et al 2021). In this sense, endoglucanases are particularly important in the breakage of cellulose fibers, in addition to reducing the size of the molecule and forming the reducing end, thus allowing other enzymes access to the cellulose structure (Nagl et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Endoglucanase production by trichoderma reesei cultivated in solid state fermentation using lignocellulosic waste / Utilização de resíduos lignocelulósicos para a produção de endoglucanases por trichoderma reesei cultivado sob fermentação em estado sólido

Pessoa¹,

Júnior²,

Chevreuil³

et al. 2021

BJDV

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Trichoderma reesei is a fungus that has been widely explored for its potential as cellulolytic enzyme producer and has diverse industrial applications. However, obtaining the enzymes is still considered a costly and, sometimes, inefficient process. This study aimed to produce endoglucanases by cultivating T. reesei (CCT-2768) in solid state fermentation, using cashew apple bagasse (CAB), sugarcane bagasse (SCB) and green coconut fiber (GCF) residues as substrates. The influence of moisture and pH on enzyme production was evaluated using a factorial design. T. reesei showed viability for producing endoglucanases in all of the three lignocellulosic residues tested, with maximum activity (2.29 ± 0.01 U/g) observed when cultivated in the SCB substrate and using moisture of 60% and pH 5.5. Thus, use of lignocellulosic residues proves to be a viable alternative for producing endoglucanases by cultivation of Trichoderma reesei, which contributes to the recycling of waste and the reduction of environmental impacts.

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Section: Introductionmentioning

confidence: 99%

Endoglucanase production by trichoderma reesei cultivated in solid state fermentation using lignocellulosic waste / Utilização de resíduos lignocelulósicos para a produção de endoglucanases por trichoderma reesei cultivado sob fermentação em estado sólido

Pessoa¹,

Júnior²,

Chevreuil³

et al. 2021

BJDV

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“…The amount of the reducing sugar released (mg/ml) was measured by using a calibration curve of glucose (1-100 mg/mL). The saccharification percentage was estimated by applying equation as follows: (Alrumman 2016;Srivastava et al 2021) where 0.9 was the factor used to convert polysaccharide to monosaccharide accounting for water uptake during hydrolysis.…”

Section: Substrate Utilization and Agricultural Wastes Saccharificationmentioning

confidence: 99%

Characterization of thermo/halo stable cellulase produced from halophilic Virgibacillus salarius BM-02 using non-pretreated biomass

Yousef

Mawad

2022

World J Microbiol Biotechnol

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The production of extremozymes from halophilic bacteria has increased significantly due to their stability and efficiency in catalyzing a reaction, as well as their capacity to display optimum activity at various salt concentrations. In the current study, the halophilic bacterium Virgibacillus salarius strain BM-02 could utilize many non-pretreated substrates including cellulose, corn stover, sugarcane bagasse and wheat bran as a sole carbon source. However, wheat bran was the best substrate for achieving optimum saccharification yield (90.1%). The partially purified cellulase was active and stable at a wide range of pH (5–8) with residual activities > 58%. Moreover, it was stable at 5–12% of NaCl. Metal ions have a variable impact on the activity of partially purified cellulase however, Fe+3 exhibited the highest increase in the cellulase activity. The enzyme exhibited a thermal stability at 40, 50 and 60 °C with half-lives of 1049.50, 168.14 and 163.5 min, respectively. The value of Vmax was 22.27 U/mL while Km was 2.1 mM. The activation energy of denaturation Ed 69.81 kJ/mol, the enthalpy values (ΔHd) were positive, and the entropy values (ΔS) were negative. Therefore, V. Salarius is recommended as a novel promising halophilic extremozyme producer and agricultural waste remover in the bio-industrial applications. Graphical abstract

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“…The work of Kumar et al [22] showed spectroscopic and morphological characterization of Nephelium lappaceum peel extract synthesized gold nanoflowers and their catalytic activity. Another one is by Srivastava et al [23], which summarized the technological advances for improving fungal cellulase production from fruit wastes for bioenergy application. Particular emphasis was also given to the various bottlenecks and feasible approaches such as the use of nanomaterials, co-culture, molecular techniques, genetic engineering, and cost economy analysis to decrease the overall cost.…”

Section: Fruit Waste and Health: Literature Quantitative Analysismentioning

confidence: 99%

Fruit Wastes as a Valuable Source of Value-Added Compounds: A Collaborative Perspective

Lucarini¹,

Durazzo²,

Bernini

et al. 2021

Molecules

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The by-products/wastes from agro-food and in particular the fruit industry represents from one side an issue since they cannot be disposed as such for their impact on the environment but they need to be treated as a waste. However, on the other side, they are a source of bioactive healthy useful compounds which can be recovered and be the starting material for other products in the view of sustainability and a circular economy addressing the global goal of “zero waste” in the environment. An updated view of the state of art of the research on fruit wastes is here given under this perspective. The topic is defined as follows: (i) literature quantitative analysis of fruit waste/by-products, with particular regards to linkage with health; (ii) an updated view of conventional and innovative extraction procedures; (iii) high-value added compounds obtained from fruit waste and associated biological properties; (iv) fruit wastes presence and relevance in updated databases. Nowadays, the investigation of the main components and related bioactivities of fruit wastes is being continuously explored throughout integrated and multidisciplinary approaches towards the exploitation of emerging fields of application which may allow to create economic, environmental, and social value in the design of an eco-friendly approach of the fruit wastes.

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Technological advances for improving fungal cellulase production from fruit wastes for bioenergy application: A review

Cited by 30 publications

References 104 publications

Endoglucanase production by trichoderma reesei cultivated in solid state fermentation using lignocellulosic waste / Utilização de resíduos lignocelulósicos para a produção de endoglucanases por trichoderma reesei cultivado sob fermentação em estado sólido

Endoglucanase production by trichoderma reesei cultivated in solid state fermentation using lignocellulosic waste / Utilização de resíduos lignocelulósicos para a produção de endoglucanases por trichoderma reesei cultivado sob fermentação em estado sólido

Characterization of thermo/halo stable cellulase produced from halophilic Virgibacillus salarius BM-02 using non-pretreated biomass

Fruit Wastes as a Valuable Source of Value-Added Compounds: A Collaborative Perspective

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