Direct fermentation of l(+)-lactic acid from cassava pulp by solid state culture of Rhizopus oryzae
作者： Parichat Phrueksawan , Songsri Kulpreecha , Sarintip Sooksai , Nuttha Thongchul
DOI: 10.1007/S00449-012-0731-3
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摘要: This study shows that Rhizopus oryzae is capable of directly utilizing cassava pulp alone to l-lactic acid in solid state fermentation (SSF). pH control at 6.0 helped prevent end product inhibition. Increasing lactate titer was observed the higher initial moistened water due degree substrate swelling and hydrolysis. With shaking, limited ethanol production but no change observed. Rigorous shaking gave better oxygen transfer presumably caused cell damage leading utilization through biosynthesis route. Supplementing with nitrogen enhanced growth not production. Under optimal conditions, R. converted sole into lactic 206.20 mg per g dry pulp. help commercial cellulase glucoamylase, dramatically increasing 463.18 achieved via SSF.
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