http://scholars.ntou.edu.tw/handle/123456789/10168
標題: | Repeated-batch lactic acid fermentation using a novel bacterial immobilization technique based on a microtube array membrane | 作者: | Chien-Chung Chen Chuan-Chi Lan Chorng-Liang Pan Mei-Ying Huang Chee-Ho Chew Chin-Chieh Hung Po-Hsuan Chen Hong-Ting Victor Lin |
關鍵字: | LACTOBACILLUS-PLANTARUM;SODIUM-ACETATE;MASS-TRANSFER;RED ALGA;BIOETHANOL;INACTIVATION;ANTIOXIDANT;TEMPERATURE;HYDROLYSIS;EFFICIENCY | 公開日期: | 十二月-2019 | 出版社: | ELSEVIER | 卷: | 87 | 起(迄)頁: | 25-32 | 來源出版物: | Process Biochemistry | 摘要: | Lactic acid has received considerable attention for its various applications. Although lactic acid is usually produced by batch fermentation using free microbes, repeated-batch fermentation using immobilized cells could offer several advantages over this method. In the present study, a novel bacteria immobilization technique using a renewable poly-L-lactic acid (PLLA) microtube array membrane (MTAM) was thoroughly evaluated in terms of its suitability for lactic acid fermentation. A bacteria encapsulation efficiency of 85-90% was obtained using a siphon approach, and bacteria in MTAMs with greater porosity showed greater lactic acid productivity. MTAM-immobilized Lactobacillus acidophilus were evaluated in eight cycles of repeated-batch lactic acid fermentation of commercial medium MRS (4% glucose) and red seaweed Gracilaria hydrolysate. The MTAM exhibited physical stability during lactic acid fermentation and improved glucose consumption and lactic acid production were achieved by immobilized cells. The immobilized bacteria showed a maximum C-LA of 37.39 g/L, r P-LA of 0.79 g/L.h, and Y-L/S of 0.94 g/g in MRS fermentation, and a maximum C-LA of 27.76 g/L, r P-LA of 0.58 g/L.h, and Y-L/S of 0.92 g/g in seaweed hydrolysate fermentation. Our data indicate that PLLA-MTAM is a novel, promising immobilization technology for lactic acid fermentation. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/10168 | ISSN: | 1359-5113 | DOI: | 10.1016/j.procbio.2019.09.016 |
顯示於: | 食品科學系 07 AFFORDABLE & CLEAN ENERGY |
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