Enhancement of growth and chitosan production by Rhizopus oryzae in whey medium by plant growth hormones

Chatterjee, Sudipta; Chatterjee, Sandipan; Chatterjee, Bishnu P.; Guha, Arun K.

doi:10.1016/j.ijbiomac.2007.10.006

Cited by 56 publications

(41 citation statements)

References 26 publications

(27 reference statements)

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“…The major ingredients detected were protein (41%), lipid (16%), and AIM (13%). Chatterjee et al (2008) claimed 37.5% protein content in Rhizopus oryzae biomass which was almost similar to that obtained using the fungus studied in the present study.…”

Section: Protein Lipid and Glucosamine Production By M Hiemalissupporting

confidence: 88%

Enhanced ethanol and glucosamine production from rice husk by NAOH pretreatment and fermentation by fungus Mucor hiemalis

2016

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Please cite this article as: Omidvar M., Karimi K., Mohammadi M. Enhanced ethanol and glucosamine production from rice husk by NAOH pretreatments and fermentation by fungus Mucor hiemalis. Biofuel Research Journal 11 (2016) 475-481. DOI: 10.18331/BRJ2016.3.3.7 Biofuel Research Journal 11 (2016) HIGHLIGHTS Ethanol production from rice husk using Mucor hiemalis was investigated. The maximum ethanol production yield of 86.7%was observed after pretreatment with 2.6 M NaOH at 67°C for 150 min.A highly valuable fungal biomass containing 60 g/kg glucosamine was obtained at optimum conditions. Ethanol production from rice husk by simultaneous saccharification and fermentation using Mucor hiemalis was investigated. ARTICLE INFO ABSTRACTTo reach the maximum ethanol production yield, the most important influencing factors in the pretreatment process, including temperature (0-100°C), NaOH concentration (1-3 M), and the pretreatment time (30-180 min), were optimized using an experimental design by a response surface methodology (RSM). The maximum ethanol production yield of 86.7 % was obtained after fungal cultivation on the husk pretreated with 2.6 M NaOH at 67°C for 150 min. This was higher than the yield of 57.7% obtained using Saccharomyces cerevisiae as control. Furthermore, fermentation using M. hiemalis under the optimum conditions led to the production of a highly valuable fungal biomass, containing 60 g glucosamine (GlcN), 410 g protein, and 160 g fungal oil per each kg of the fungal biomass. © 2016 BRTeam. All rights reserved.Journal homepage: www.biofueljournal.com Omidvar et al. / Biofuel Research Journal 11 (2016) [475][476][477][478][479][480][481] Please cite this article as: Omidvar M., Karimi K., Mohammadi M. Enhanced ethanol and glucosamine production from rice husk by NAOH pretreatments and fermentation by fungus Mucor hiemalis.

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Section: Protein Lipid and Glucosamine Production By M Hiemalissupporting

confidence: 88%

Enhanced ethanol and glucosamine production from rice husk by NAOH pretreatment and fermentation by fungus Mucor hiemalis

2016

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“…Chitosan extraction from R. oryzae was performed according to the method of Chatterjee et al [20,21]. The dry biomass was milled, and mixed with 1 mol/L sodium hydroxide solution at a solid-to-liquid ratio of 1:40 (w/v), then processed at 121 C for 15 min.…”

Section: Chitosan Extractionmentioning

confidence: 99%

Fungal chitosan production using xylose rich of corn stover prehydrolysate by Rhizopus oryzae

Yang

Lai

et al. 2017

Biotechnology & Biotechnological Equipment

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Xylose rich of lignocellulosic prehydrolysate could be used for fungal chitosan production effectively by Rhizopus oryzae. When 15 g/L xylose was used as carbon source for R. oryzae AS 3.819 fermentation, almost all of the xylose was consumed for cell growth (4.33 g/L of biomass) and the chitosan extraction yield was 0.11 g/g biomass. Corn stover prehydrolysate by dilute acid-assisted steam explosion pretreatment that contained 30 g/L xylose and 10 g/L glucose was fermented by R. oryzae AS 3.819 for 72 h, the biomass and the chitosan extraction yield were 10.96 g/L and 0.09 g/g biomass. The degree of deacetylation of the fungal chitosan derived from corn stover prehydrolysate (91.27%) was higher than that of the commercial chitosan extracted from natural shellfish exoskeleton (87.25%), and the viscosity of the fungal chitosan derived from corn stover prehydrolysate (2.67 mPaÁs) had a large decrease compared to the commercial chitosan (22.25 mPaÁs). The functional groups and thermostability of the fungal chitosan were proofed by Infrared (IR) spectra and Derivative thermogravimetric (DTG), respectively.

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“…Fungal chitosan molecular weight would vary upon substrate, medium supplementation and fermentation mode. Chatterjee et al (2008) reported that the molecular weight of chitosan obtained from R. oryzae mycelia under submerged fermentation was 120 kDa with a low polydispersity index of 0.22 and a uniform chain length of chitosan molecules. After the supplementation with a plant growth hormone, chitosan molecular weight of R. oryzae was about twofold larger (Chatterjee et al 2008).…”

Section: Discussionmentioning

confidence: 99%

“…Chatterjee et al (2008) reported that the molecular weight of chitosan obtained from R. oryzae mycelia under submerged fermentation was 120 kDa with a low polydispersity index of 0.22 and a uniform chain length of chitosan molecules. After the supplementation with a plant growth hormone, chitosan molecular weight of R. oryzae was about twofold larger (Chatterjee et al 2008). The molecular weight of chitosan produced by G. butleri increased with urea supplementation into a solid substrate (Nwe and Stevens 2004).…”

Section: Discussionmentioning

confidence: 99%

Production and characterization of chitosan obtained from Rhizopus oryzae grown on potato chip processing waste

Kleekayai

Suntornsuk

2010

World J Microbiol Biotechnol

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Potato chip processing waste of trimmed potato, potato peel and substandard (low-quality) potato chips, obtained from a potato chip processing plant, were used as substrates for chitosan production from Rhizopus oryzae. It was cultured on each waste product at 30 ± 2°C and 70% moisture content for 21 days. Fermented potato peel had the highest yield after 5 days of fermentation. The cultivation condition of chitosan obtained from R. oryzae was optimum for a peel size of less than 6 mesh, 70% moisture content and a pH of 5. Furthermore, the best extraction condition was using 46% sodium hydroxide at 46°C for 13 h followed by 2% acetic acid at 95°C for 8 h. The maximum chitosan yield obtained by these conditions was 10.8 g/kg substrate. Fungal chitosan properties were found to be 86-90% degree of deacetylation, molecular weight of 80-128 kDa and viscosity of 3.1-6.1 mPa s. Therefore, potato peel could be applied as a low cost substrate for chitosan production from R. oryzae.

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Enhancement of growth and chitosan production by Rhizopus oryzae in whey medium by plant growth hormones

Cited by 56 publications

References 26 publications

Enhanced ethanol and glucosamine production from rice husk by NAOH pretreatment and fermentation by fungus Mucor hiemalis

Enhanced ethanol and glucosamine production from rice husk by NAOH pretreatment and fermentation by fungus Mucor hiemalis

Fungal chitosan production using xylose rich of corn stover prehydrolysate by Rhizopus oryzae

Production and characterization of chitosan obtained from Rhizopus oryzae grown on potato chip processing waste

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