Production of various organic acids from different renewable sources by immobilized cells in the regimes of separate hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SFF)
Autor: | Olga Maslova, Elena Efremenko, Olga Senko, Nikolay Stepanov |
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Rok vydání: | 2018 |
Předmět: |
0106 biological sciences
Environmental Engineering Bioconversion Rhizopus oryzae Bioengineering 010501 environmental sciences 01 natural sciences Hydrolysis 010608 biotechnology Enzymatic hydrolysis Microalgae Food science Biomass Waste Management and Disposal 0105 earth and related environmental sciences biology Renewable Energy Sustainability and the Environment Chemistry food and beverages General Medicine Actinobacillus Cells Immobilized biology.organism_classification Actinobacillus succinogenes visual_art Fermentation visual_art.visual_art_medium Helianthus Sawdust Acids Rhizopus Jerusalem artichoke |
Zdroj: | Bioresource technology. 272 |
ISSN: | 1873-2976 |
Popis: | The study was aimed at production of different organic acids (OA) (lactic, fumaric, or succinic) by various microbial cells (filamentous fungi Rhizopus oryzae (F-814, F-1127) and bacteria Actinobacillus succinogenes B-10111) immobilized into poly(vinyl alcohol) (PVA) cryogel from diverse renewable raw materials (wheat and rice straw, aspen and pine sawdust, Jerusalem artichoke stems and tubers, biomass of macro- and microalgae) under batch conditions. The process productivity, bulk output and OA concentrations were higher in case of using immobilized cells than in case of free cells under identical conditions. A higher OA productivity was reached via simultaneous enzymatic saccharification and microbial fermentation (SSF) of same raw materials as compared to their separate enzymatic hydrolysis and fermentation of accumulated reducing sugars (SHF). Maximal concentrations of all OAs studied were obtained for bioconversion of Jerusalem artichoke tubers. The immobilized cells were used in long-term conversion of various renewable materials to OAs in SSF. |
Databáze: | OpenAIRE |
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