L(+)-Lactic acid recovery from cassava bagasse based fermented medium using anion exchange resins

Brazilian Archives of Biology and Technology

Rojan P. John¹  K. Madhavan Nampoothiri¹  Ashok Pandey¹ 

[1] ,National Institute for Interdisciplinary Science and Technology Biotechnology Division Trivandru Kerala ,India

关键词: L(+) lactic acid;    lactobacilli;    anion exchage resin;    cassava bagasse;   

DOI  :  10.1590/S1516-89132008000600020

来源: SciELO

【 摘 要 】

The properties of the ion exchange resins, Amberlite IRA 402, a strong anion exchange resin and IRA 67, a weak anion exchange resin were determined to evaluate their comparative suitability for lactic acid recovery from fermented cassava bagasse. Data on binding capacities and recovery proved that weak base resin in chloride form was the most favourable ones for lactic acid recovery from aqueous solutions and fermentation media. Fermented media obtained through simultaneous saccharification and fermentation of cassava bagasse starch hydrolysate based medium were used for lactic acid recovery study using weak base resin column. Amberlite IRA 67 had much more efficiency than Amberlite IRA 402 to recover lactic acid. Like in other reports, due to the presence of nutrients and ions other than lactate, the binding capacity was slightly lesser while using fermented media (~93%) instead of aqueous lactic acid solutions (~98%).

【 授权许可】

CC BY-NC   
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