L-lactic acid fermentation condition with rapid saccharification solution of total cellulose from wheat straw as carbon source
Using the saccharified liquid of wheat straw total cellulose hydrolyzed for 5 h as the alternative carbon source, the fermentation conditions of L-lactic acid produced by Bacillus coagulans were optimized by single factor and response surface tests. The results showed that the optimal fermentation c...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Editorial Department of China Brewing
2025-02-01
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| Series: | Zhongguo niangzao |
| Subjects: | |
| Online Access: | https://manu61.magtech.com.cn/zgnz/fileup/0254-5071/PDF/0254-5071-2025-44-2-256.pdf |
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| Summary: | Using the saccharified liquid of wheat straw total cellulose hydrolyzed for 5 h as the alternative carbon source, the fermentation conditions of L-lactic acid produced by Bacillus coagulans were optimized by single factor and response surface tests. The results showed that the optimal fermentation conditions were seed age 4.20 h, inoculum 5%, fermentation temperature 50 ℃, loading liquid volume 42% and rotation speed 150 r/min. Under the optimal conditions, the yield of L-lactic acid was 54.92 g/L after 18 h fermentation. Therefore, the saccharified liquid obtained by rapid saccharification of wheat straw total cellulose could be used as the carbon source for L-lactic acid fermentation, which could replace grain starch to produce lactic acid. This research result would strongly promote straw lignocellulose to replace grain starch for lactic acid fermentation. |
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| ISSN: | 0254-5071 |