scholarly journals Comparison of high-titer lactic acid fermentation from NaOH- and NH3-H2O2-pretreated corncob by Bacillus coagulans using simultaneous saccharification and fermentation

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Zhenting Zhang ◽  
Yuejiao Xie ◽  
Xiaolan He ◽  
Xinli Li ◽  
Jinlong Hu ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Simultaneous Saccharification And Fermentation ◽  
High Titer ◽  
Bacillus Coagulans ◽  
Lactic Acid Fermentation ◽  
Acid Fermentation ◽  
Simultaneous Saccharification

scholarly journals Biodetoxification of Phenolic Inhibitors from Lignocellulose Pretreatment using Kurthia huakuii LAM0618T and Subsequent Lactic Acid Fermentation

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2626 ◽  
Author(s):  
Yuejiao Xie ◽  
Qing Hu ◽  
Guodong Feng ◽  
Xu Jiang ◽  
Jinlong Hu ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Corn Stover ◽  
Simultaneous Saccharification And Fermentation ◽  
High Titer ◽  
Bacillus Coagulans ◽  
High Yield ◽  
Acid Fermentation ◽  
Biochemical Production ◽  
Water Rinsing ◽  
Simultaneous Saccharification

Phenolic inhibitors generated during alkaline pretreatment of lignocellulosic biomasses significantly hinder bacterial growth and subsequent biofuel and biochemical production. Water rinsing is an efficient method for removing these compounds. Nevertheless, this method often generates a great amount of wastewater, and leads to the loss of solid fiber particles and fermentable sugars. Kurthia huakuii LAM0618T, a recently identified microorganism, was herein shown to be able to efficiently transform phenolic compounds (syringaldehyde, hydroxybenzaldehyde, and vanillin) into less toxic acids. Taking advantage of these properties, a biodetoxification method was established by inoculating K. huakuii LAM0618T into the NH3/H2O2-pretreated unwashed corn stover to degrade phenolic inhibitors and weak acids generated during the pretreatment. Subsequently, 33.47 and 17.91 g/L lactic acid was produced by Bacillus coagulans LA204 at 50 °C through simultaneous saccharification and fermentation (SSF) from 8% (w/w) of NH3/H2O2-pretreated corn stover with or without K. huakuii LAM0618T-biodetoxification, indicating biodetoxification significantly increased lactic acid titer and yield. Importantly, using 15% (w/w) of the NH3/H2O2-pretreated K. huakuii LAM0618T-biodetoxified corn stover as a substrate through fed-batch simultaneous saccharification and fermentation, high titer and high yield of lactic acid (84.49 g/L and 0.56 g/g corn stover, respectively, with a productivity of 0.88 g/L/h) were produced by Bacillus coagulans LA204. Therefore, this study reported the first study on biodetoxification of alkaline-pretreated lignocellulosic material, and this biodetoxification method could replace water rinsing for removal of phenolic inhibitors and applied in biofuel and biochemical production using the alkaline-pretreated lignocellulosic bioresources.

scholarly journals Nutrient value of fish manure waste on lactic acid fermentation by Lactobacillus pentosus

RSC Advances ◽  
2018 ◽  
Vol 8 (55) ◽  
pp. 31267-31274 ◽  
Author(s):  
Suan Shi ◽  
Jing Li ◽  
Wenjian Guan ◽  
David Blersch
Keyword(s):  
Lactic Acid ◽  
Acid Production ◽  
Simultaneous Saccharification And Fermentation ◽  
Lactic Acid Production ◽  
Lactic Acid Fermentation ◽  
Nutrient Source ◽  
Acid Fermentation ◽  
Lactobacillus Pentosus ◽  
Nutrient Value ◽  
Simultaneous Saccharification

Fish manure wastes are an effective nutrient source for lactic acid production using simultaneous saccharification and fermentation.

scholarly journals Simultaneous saccharification and lactic acid fermentation of the cellulosic fraction of municipal solid waste using Bacillus smithii

2020 ◽  
Author(s):  
Micaela G. Chacón ◽  
Christopher Ibenegbu ◽  
David J. Leak
Keyword(s):  
Lactic Acid ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Lactic Acid Production ◽  
Lactic Acid Fermentation ◽  
Potential Candidate ◽  
Acid Fermentation ◽  
Promising Candidate ◽  
Cellulosic Pulp ◽  
Simultaneous Saccharification

Abstract Objective A primary drawback to simultaneous saccharification and fermentation (SSF) processes is the incompatibility of the temperature and pH optima for the hydrolysis and fermentation steps—with the former working best at 50–55 °C and pH 4.5–5.5. Here, nine thermophilic Bacillus and Parageobacillus spp. were evaluated for growth and lactic acid fermentation at high temperature and low pH. The most promising candidate was then carried forward to demonstrate SSF using the cellulosic fraction from municipal solid waste (MSW) as a feedstock. Results B. smithii SA8Eth was identified as the most promising candidate and in a batch SSF maintained at 55 °C and pH 5.0, using a cellulase dose of 5 FPU/g glucan, it produced 5.1 g/L lactic acid from 2% (w/v) MSW cellulosic pulp in TSB media. Conclusion This work has both scientific and industrial relevance, as it evaluates a number of previously untrialled bacterial hosts for their compatibility with lignocellulosic SSF for lactic acid production and successfully identifies B. smithii as a potential candidate for such a process.

Sign in / Sign up

Export Citation Format

Share Document