Feasibility of exhausted sugar beet pulp as raw material for lactic acid production
| العنوان: | Feasibility of exhausted sugar beet pulp as raw material for lactic acid production |
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| المؤلفون: | Claudia González, Ana Blandino, Ana Belén Díaz, Cristina Marzo, Ildefonso Caro |
| المصدر: | Journal of the Science of Food and Agriculture. 100:3036-3045 |
| بيانات النشر: | Wiley, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Lactobacillus casei, 030309 nutrition & dietetics, engineering.material, Raw material, 03 medical and health sciences, Hydrolysis, chemistry.chemical_compound, Bioreactors, 0404 agricultural biotechnology, Lactic Acid, Food science, Sugar, Waste Products, 0303 health sciences, Nutrition and Dietetics, biology, Pulp (paper), 04 agricultural and veterinary sciences, Hydrogen-Ion Concentration, biology.organism_classification, 040401 food science, Culture Media, Lactic acid, Lacticaseibacillus casei, Plant Tubers, chemistry, Batch Cell Culture Techniques, Fermentation, engineering, Sugar beet, Beta vulgaris, Sugars, Agronomy and Crop Science, Food Science, Biotechnology |
| الوصف: | Background Exhausted sugar beet pulp pellets (ESBPP), a sugar industry by-product generated after sugar extraction in the sugar production process, have been used as a raw material for lactic acid (LA) production via hydrolysis and fermentation by Lactobacillus casei. To design a more cost-effective process, simultaneous saccharification and fermentation (SSF) of ESBPP is proposed in the present study. The effects of pH control, nutrient supplementation and solid addition in fed-batch SSF on lactic acid production were investigated. Results The highest LA concentration (26.88 g L-1 ) was reached in fed-batch SSF at a solid/liquid loading of 0.2 g mL-1 , with pH control (by adding 30 g L-1 CaCO3 to the medium) and nutrient supplementation (by adding 20 mL of MRS medium per 100 mL of buffer). Under these conditions, a maximum productivity of 0.63 g L-1 h-1 was achieved, which is 2.7 times higher than that attained in the control experiment (SSF inoculated at time 0 h). However, a slightly lower LA yield was obtained, revealing the need of an increasing dose of enzymes at high solid loading SSF. Conclusion An efficient fed-batch SSF strategy with pH control and MRS supplementation is described in the present study, attaining higher LA productivity compared to separate hydrolysis and fermentation and SSF. © 2020 Society of Chemical Industry. |
| تدمد: | 1097-0010 0022-5142 |
| DOI: | 10.1002/jsfa.10334 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15c0085981d06461de39517cf0fb9801 https://doi.org/10.1002/jsfa.10334 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....15c0085981d06461de39517cf0fb9801 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10970010 00225142 |
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| DOI: | 10.1002/jsfa.10334 |