Spent grains -: a new support for brewing yeast immobilisation

被引：73

作者：

Brányik, T

Vicente, AA

Machado Cruz, JM

Teixeira, JA

机构：

[1] Univ Minho, Ctr Engn Biol, IBQF, P-4710057 Braga, Portugal

[2] UNICER Uniao Cervejeira SA, P-4466955 Sao Mamede de Infesta, Portugal

来源：

BIOTECHNOLOGY LETTERS | 2001年 / 23卷 / 13期

关键词：

continuous reactor; immobilisation; spent grains; yeast;

D O I：

10.1023/A:1010558407475

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：

A novel carrier obtained from spent grains, a brewing by-product, was used for brewing yeast immobilisation in a continuous bubble-column reactor. The multiple-layer cell adhesion to the carrier particles resulted in a maximum cell load of 430 mg dry cell g(-1) dry carrier (d.c.). After 120 h of reactor operation, the cell load of DEAE-modified carrier was below 40 mg dry cell g(-1) d.c. while the values for non-modified carrier reached at least 100 mg dry cell g(-1) d.c. The changes in substrate composition on the rate of yeast attachment and on its stability were also studied.

引用

页码：1073 / 1078

页数：6

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