EFFECT OF VOLUME RATIO OF CELLULOSE CARRIERS AND TIME-INTERVAL OF REPEATED BATCH CULTURE ON CITRIC-ACID PRODUCTIVITY BY IMMOBILIZED ASPERGILLUS-NIGER

被引：20

作者：

FUJII, N ^{[1
]}

YASUDA, K ^{[1
]}

SAKAKIBARA, M ^{[1
]}

机构：

[1] FUKUI UNIV,FAC ENGN,DEPT APPL CHEM & BIOTECHNOL,FUKUI 910,JAPAN

来源：

JOURNAL OF FERMENTATION AND BIOENGINEERING | 1994年 / 78卷 / 05期

关键词：

D O I：

10.1016/0922-338X(94)90288-7

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Citric acid production by Aspergillus niger immobilized in porous cellulose carriers, commercially known as MICROCUBE, was investigated at different volume ratios of carriers. MICROCUBE was prepared using viscose to immobilize A. niger for culture. The result showed that the acid productivity in the immobilized culture was twice that in a conventional suspension culture. In addition, it was found that the acid productivity depended on carrier volume ratio, where a maximum productivity of 8.9 g/l.d was obtained at 30% v/v. At this volume ratio, repeated batch cultures were tested at different time intervals of 5, 7 and 9 d. In all cases, the activity of immobilized A. niger was maintained for up to 40 d a maximum amount of acid was obtained at 7-d batch interval.

引用

页码：389 / 393

页数：5

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