Conversion of agroindustrial residues for high poly(γ-glutamic acid) production by Bacillus subtilis NX-2 via solid-state fermentation

Tang, Bao Quoc; Xu, Hong; Xu, Zhihua; Xu, Cen; Xu, Zheng; Lei, Peng; Qiu, Yibin; Liang, Jianying; Feng, Xiaohai

doi:10.1016/j.biortech.2015.01.015

Cited by 44 publications

(29 citation statements)

References 15 publications

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“…This biodegradable and water-soluble polymer is nontoxic and has been widely utilized in food additives (Jeong et al, 2010), drug carriers (Bajaj and Singhal, 2011), and biological adhesives (Tang et al, 2015b).…”

Section: Introductionmentioning

confidence: 99%

Improvement of poly-γ-glutamic acid biosynthesis in a moving bed biofilm reactor by Bacillus subtilis NX-2

Jiang

Tang

et al. 2016

Bioresource Technology

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Section: Introductionmentioning

confidence: 99%

Improvement of poly-γ-glutamic acid biosynthesis in a moving bed biofilm reactor by Bacillus subtilis NX-2

Jiang

Tang

et al. 2016

Bioresource Technology

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“…In addition to liquid fermentation, we examined the effect of solid‐state fermentation on the release of nutrients from Moringa leaf meal . The soluble protein content of the control group did not substantially change and was approximately 124 mg g −1 .…”

Section: Resultsmentioning

confidence: 99%

“…The effect of the fermentation differed for each of the bacterial strains examined, probably because each strain secretes a different cellulose . Specifically, Bacillus subtilis subsp.…”

Section: Resultsmentioning

confidence: 99%

Solid‐state fermentation of Moringa oleifera leaf meal using Bacillus pumilusCICC 10440

Zhang

Huang

Zhao

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND Moringa leaf is licensed as a new food ingredient and is rich in nutrients. However, owing to its high cellulose content, the nutrients are difficult to digest and absorb, which limits the product development and application of Moringa leaf. RESULTS Four bacterial strains – Trichoderma reesei CICC 2626, Bacillus pumilus CICC 10440, Bacillus subtilis subsp. CICC 21934, and Bacillus sp. CICC 21942 – were chosen to ferment with Moringa leaf powder. The results of solid fermentation and liquid fermentation show that solid‐state fermentation using Bacillus pumilus CICC 10440 in a 1:60 ratio with Moringa leaf powder produced the greatest amount of soluble protein (285 mg g−1, 2.42 times higher than the control) in 24 h. Using a cellulase activity assay and western blotting, it was found that Bacillus pumilus CICC 10440 uses endoglucanase to dissolve the cellulose to release nutrients from the Moringa oleifera leaf. We expanded the fermentation scale of the Moringa oleifera leaf in a 200 L fermenter and produced a 50 kg batch of Moringa oleifera product. CONCLUSION The results showing improvement in the nutrient release of Moringa leaf via microbial fermentation are a promising start and provide a basis for further product development of Moringa leaf. © 2017 Society of Chemical Industry

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“…3, Table 2). PGA, as a microbial secondary metabolite, its amount accumulated in the medium normally began to increase drastically at the late logarithmic growth phase (Bajaj and Singhal, 2011;Zhang et al, 2012;Tang et al, 2015). Therefore, 40 and 50 g L À1 of initial xylose are also unsuitable for the next stage of PGA synthesis.…”

Section: Cell Growth With Xylose From the Rice Straw Stage I Hydrolysmentioning

confidence: 98%

“…Untreated cane molasses could be used for environmentally friendly and economical production of PGA in submerged fermentation (Zhang et al, 2012). Solid-state fermentation (SSF) has recently become an increasing research focus because the technology could convert various agro-industrial residues and industrial wastes to synthesize PGA (Yong et al, 2011;Zeng et al, 2013;Tang et al, 2015). However, sugarcane resources are not rich enough and are severely restricted by region and season; the shortcomings of SSF are not easy to extract and high labor requirements; thus bringing an obstacle to the commercial development of PGA.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient rice straw utilization for poly-(γ-glutamic acid) production by Bacillus subtilis NX-2

Tang

Lei

et al. 2015

Bioresource Technology

Self Cite

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Conversion of agroindustrial residues for high poly(γ-glutamic acid) production by Bacillus subtilis NX-2 via solid-state fermentation

Cited by 44 publications

References 15 publications

Improvement of poly-γ-glutamic acid biosynthesis in a moving bed biofilm reactor by Bacillus subtilis NX-2

Improvement of poly-γ-glutamic acid biosynthesis in a moving bed biofilm reactor by Bacillus subtilis NX-2

Solid‐state fermentation of Moringa oleifera leaf meal using Bacillus pumilusCICC 10440

Highly efficient rice straw utilization for poly-(γ-glutamic acid) production by Bacillus subtilis NX-2

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