Corncobs as a Potential Source of Functional Chemicals

Ashour, Ahmed; Amer, Mohamed; Marzouk, Amani M.; Shimizu, Kuniyoshi; Kondo, Ryuichiro; El-Sharkawy, Saleh

doi:10.3390/molecules181113823

Cited by 35 publications

(19 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Agriculture byproducts like corn cobs is one of the most renewable lignocellulosic feedstocks produced from corn processing industry (Kumar et al, 2008) with significant level of hemicellulose content. According to Knob et al (2014), for 100 kg of corn grains, 18 kg of cobs are produced which is either discarded or sold at low price for animal supplementary feed (Ashour et al, 2013) which is notwithstanding its potential. The utilization of such abundant agriculture biomass may contribute to increase its value and not worsen environmental pollution (Kumar et al, 2017;Pandiyan et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Optimized Production of Xylanase by Penicillium purpurogenum and Ultrasound Impact on Enzyme Kinetics for the Production of Monomeric Sugars From Pretreated Corn Cobs

2020

View full text Add to dashboard Cite

Corn cob is an abundant organic source with significant potential in sustainable energy development. For the effective conversion of the feedstocks to valued commodities, effective biocatalysts are highly desired. The present study aims at optimizing the critical parameters required for xylanase production by Penicillium purpurogenum isolated from rotten wood sample using the Taguchi orthogonal array layout of L25 (5 ∧ 6). The optimized conditions like temperature 40 • C, pH 3, size of inoculum 1.2 × 10 8 spores/ml, moisture 70%, peptone 0.8%, and 5 days of incubation resulted in 1,097 ± 6.76 U/gram dry substrate (gds) xylanase which was 65.72% more when compared to un-optimized production of xylanase. The xylanase thus produced, effectively carried out pretreated corn cob saccharification and the reaction was further improved with ultrasound assistance which has increased the saccharification yield to 12.02% along with significant reduction in reaction time. The saccharification efficiency of pretreated corn cob was found to be 80.29% more compared to the raw corn cob, reflecting its recalcitrance to digestion. Indeed, xylan being the second most abundant polymer in lignocellulosic biomass, considerable attention is being paid for its effective conversion to valued products.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimized Production of Xylanase by Penicillium purpurogenum and Ultrasound Impact on Enzyme Kinetics for the Production of Monomeric Sugars From Pretreated Corn Cobs

2020

View full text Add to dashboard Cite

show abstract

“…Corn cob like several other agricultural waste products has been utilized as renewable feedstocks in the characteristic high‐yield production of biofuels and chemicals . Their applicability in the majority of these processes is often challenged by their characteristic recalcitrance to most forms of catalytic conversion.…”

Section: Introductionmentioning

confidence: 99%

Effect of water of crystallization on the dissolution efficiency of molten zinc chloride hydrate salts during the pre‐treatment of corncob biomass

Awosusi

Adeleke

Ayeni

et al. 2017

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND: Agro-wastes albeit abundant and cheap, require pre-treatment steps tailored to overcome the characteristic recalcitrance of lignocellulosic biomass. In this study, zinc chloride hydrate salts were studied for their biomass deconstruction potential. The role of salts' hydration and to what degree it affects the dissolution efficiency was evaluated. Milled corn cobs from local farmlands were dissolved in the following solvent systems; ZnCl 2 .3H 2 O, ZnCl 2 .4H 2 O, ZnCl 2 .5H 2 O and ZnCl 2 .7H 2 O at 70 ∘ C for 60 mins at a biomass to solvent ratio of 1:12. RESULTS: The difference between the least and most hydrated solvent systems in terms of total released sugars as a percentageof recoverable sugar is 70.1%. The ZnCl 2 .4H 2 O solvent system extracted up to 49.1% of glucose and 95% of xylose. There were significant differences in the crystallinity indices and surface morphologies between the untreated and treated biomass. CONCLUSION: The findings as documented contribute to current insights on the mechanisms of disintegration of lignocellulosic biomass in molten hydrate salts. The extraction of sugar components of biomass by ZnCl 2 .4H 2 O solvation was about 43% glucan and 99% xylan.

show abstract

“…Este material é constituído principalmente de celulose, hemicelulose e lignina. Esta grande porcentagem de celulose presente no sabugo o torna viável para utilização em imobilização de enzimas, uma vez que a superfície da estrutura de celulose possui grupos hidroxilas livres, o que permite que estes grupos sofram modificações e passem por processos de ativação, para que assim possa haver ligação covalente, por exemplo, entre a enzima e o suporte funcionalizado (ASHOUR et al, 2013).…”

Section: Introductionunclassified

Síntese De Lipídeos Estruturados Empregando Lipase De Rhizopus Oryzae Imobilizada Em Pó De Sabugo De Milho.

Batista¹,

Paula²,

Silva³

et al. 2019

Blucher Chemical Engineering Proceedings

View full text Add to dashboard Cite

Corncobs as a Potential Source of Functional Chemicals

Cited by 35 publications

References 22 publications

Optimized Production of Xylanase by Penicillium purpurogenum and Ultrasound Impact on Enzyme Kinetics for the Production of Monomeric Sugars From Pretreated Corn Cobs

Optimized Production of Xylanase by Penicillium purpurogenum and Ultrasound Impact on Enzyme Kinetics for the Production of Monomeric Sugars From Pretreated Corn Cobs

Effect of water of crystallization on the dissolution efficiency of molten zinc chloride hydrate salts during the pre‐treatment of corncob biomass

Síntese De Lipídeos Estruturados Empregando Lipase De Rhizopus Oryzae Imobilizada Em Pó De Sabugo De Milho.

Contact Info

Product

Resources

About