Efficient production of polymer-grade d-lactate by Sporolactobacillus laevolacticus DSM442 with agricultural waste cottonseed as the sole nitrogen source
| Autor: | Yanhe Ma, Limin Wang, Bo Yu, Li Yuan, Jiansong Ju |
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| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Environmental Engineering Sporolactobacillus laevolacticus Waste management Nitrogen Renewable Energy Sustainability and the Environment Temperature food and beverages Bioengineering General Medicine Polymer Lactic acid Cottonseed Lactobacillus Hydrolysis chemistry.chemical_compound Glucose chemistry Polymerization Yield (chemistry) Fermentation Cotton Fiber Lactic Acid Food science Waste Management and Disposal |
| Zdroj: | Bioresource Technology. 142:186-191 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2013.04.124 |
| Popis: | In this study, we show that Sporolactobacillus laevolacticus DSM442 can produce d-lactate by using cottonseed as the sole nitrogen source. The cottonseed was enzymatically hydrolyzed and simultaneously utilized during d-lactate fermentation. Under optimal conditions, a high d-lactic acid concentration (144.4 g/L) was obtained in a fed-batch fermentation within 35 h, with an average productivity of 4.13 g/(Lh) and a yield of 0.96 g/g glucose. The optical purity of d-lactic acid in the broth was 99.3%, which meets the requirement for use in lactic acid polymerization. Our study represents a cost-effective method for polymer-grade d-lactate production using cheap agricultural wastes. |
| Databáze: | OpenAIRE |
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