Bioconversion and biotransformation of coir pith for economic production of Pleurotus florida: chemical and biochemical changes in coir pith during the mushroom growth and fructification

Shashirekha, M. N.; Rajarathnam, S.

doi:10.1007/s11274-006-9340-0

Cited by 16 publications

(6 citation statements)

References 29 publications

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“…At the end of the cropping period, the substrate turned dark brown, with the production of Xuid that could possibly be due to the dissolution of lignin, as was reported by Wainright [32]. Cellulose and hemicellulose degradation pattern were similar to the results obtained with Pleurotus Xorida in a substrate formulated with a mixture of 80% of coir pith and 20% of rice straw [27]. It is important to state that, in our experiments, supplemented substrates showed higher decreases in cellulose, hemicelluloses and lignin content than S1 along the cultivation cycle.…”

Section: Discussionsupporting

confidence: 80%

“…White rot fungi such as P. tenuiculus can degrade lignin to reach other more readily available carbon sources present in the wood (cellulose and hemicellulose). Shashirekta and Rajarathnam [27] found higher lignin degradation in a period from incubation until the formation of pinheads, coinciding with a laccase peak activity. On the contrary, we found more lignin degradation during the fruiting state [27].…”

Section: Discussionmentioning

confidence: 86%

“…Shashirekta and Rajarathnam [27] found higher lignin degradation in a period from incubation until the formation of pinheads, coinciding with a laccase peak activity. On the contrary, we found more lignin degradation during the fruiting state [27]. At the end of the cropping period, the substrate turned dark brown, with the production of Xuid that could possibly be due to the dissolution of lignin, as was reported by Wainright [32].…”

Section: Discussionmentioning

confidence: 86%

See 2 more Smart Citations

Polyporus tenuiculus: a new naturally occurring mushroom that can be industrially cultivated on agricultural waste

Omarini

Lechner

Albertó

2009

J Ind Microbiol Biotechnol

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Polyporus tenuiculus is a naturally occurring species from Central and South America that is consumed by different ethnic groups in the region. To determine the optimal conditions for fruiting body production, two strains were assayed on wheat straw and sawdust with or without supplements. Sixty days of incubation at 25 degrees C were needed to produce a solid block. The highest yield was obtained with strain ICFC 383/00 grown on supplemented willow sawdust. In a second experiment the strain ICFC 383/00 and different supplements were used to improve the biological efficiency (BE) and to determine the quality traits and its biodegradation capacity. The highest yields were obtained on sawdust with 25% of supplements reaching 82.7% of BE. Supplements raised the number of flushes, generally from four to five, contributing to increased yields. The type of substrate had a significant effect on fruiting body diameters of P. tenuiculus, and the largest mushrooms were harvested on supplemented substrate with the highest BE coinciding with the highest dry matter loss in substrates. P. tenuiculus showed a capacity to degrade sawdust, causing a decrease of 67.2-74.5% in cellulose, 80.4-85.7% in hemicellulose, and 60.6-66.2% in lignin content at the end of the cultivation cycle. The decrease in hemicellulose was relatively greater than that of cellulose and lignin on supplemented substrates. This is the first report of the cultivation of P. tenuiculus on lignocellulosic waste, and it is a promising species both for commercial production and for its potential use in the degradation of other biowastes.

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Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 86%

See 1 more Smart Citation

Polyporus tenuiculus: a new naturally occurring mushroom that can be industrially cultivated on agricultural waste

Omarini

Lechner

Albertó

2009

J Ind Microbiol Biotechnol

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“…Chemical treatment of lignocellulosic material reduces its moisture absorption capacity and improves filler–matrix adhesion . Very few authors have reported the effect of chemical treatment on coir pith , but no study has focused on the effect of chemical treatment on coir pith–polymer composites.…”

Section: Introductionmentioning

confidence: 99%

Development of coir pith based hybrid composite panels with enhanced water resistant behavior

Narendar

Dasan

2015

Env Prog and Sustain Energy

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The main aim of the investigation was to study the impact of moisture or water on coir pith/epoxy composites. Coir pith/ epoxy, nylon/epoxy composites, and coir pith/nylon/epoxy hybrid composites were prepared by hand lay-up followed compression molding. A series of composites of the same type having chemically treated coir pith were also fabricated. The effect of each reinforcements and the type of chemical treatment on the water absorption behavior of epoxy were evaluated and compared with each other. Composites specimens were submerged in the water environment for specified duration and then the water absorption nature was studied. The impact strength of the immersed samples was also investigated to understand the influence of water immersion on the mechanical behavior of composites. Though coir pith reinforcements improve the mechanical properties of composites, the samples were found to loss their mechanical properties on exposing to water. However the results from the present investigation suggest that various chemical treatments of coir pith and hybridization with nylon fabric to overcome this issues.

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“…. Cocopeat consists of 21-36% cellulose and 48-54% lignin (Israel et al 2011;Shashirekha and Rajarathnam 2007)…”

mentioning

confidence: 99%

Cellulase stimulation during biodegradation of lignocellulosic residues at increased biomass loading

Pamidipati

Ahmed

2018

Biocatalysis and Biotransformation

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Microbial degradation of lignocellulosic biomass is primarily affected by the composition and structure of biomass, as well as enzyme activities that are influenced by the presence of in-process degradation products.This study focuses on the latter, and demonstrates that cellulase activity of Neurospora discreta is stimulated in the presence of in-process soluble lignin degradation products. Two types of biomass, cocopeat and sugarcane bagasse, with contrasting lignin content and cellulose structure were tested at two biomass loadings each. At the higher biomass loading, cocopeat showed the highest amount of hydrolyzed cellulose and cellulase activity, despite its low cellulose content and recalcitrant cellulose structure. A strong positive correlation was revealed between the amount of in-process degraded lignin and cellulase activity, indicating a stimulatory effect on cellulase, which contradicts most previous literature. Furthermore, the causal relationship between the amount of degraded lignin and cellulase activity was established in a model system of commercial cellulase and standard soluble lignin. This work could pave the way for using biomass loading as a process lever to enhance cellulose hydrolysis in microbial conversion of lignocellulosic biomass.

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Bioconversion and biotransformation of coir pith for economic production of Pleurotus florida: chemical and biochemical changes in coir pith during the mushroom growth and fructification

Cited by 16 publications

References 29 publications

Polyporus tenuiculus: a new naturally occurring mushroom that can be industrially cultivated on agricultural waste

Polyporus tenuiculus: a new naturally occurring mushroom that can be industrially cultivated on agricultural waste

Development of coir pith based hybrid composite panels with enhanced water resistant behavior

Cellulase stimulation during biodegradation of lignocellulosic residues at increased biomass loading

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