Selection of non-conventional yeasts and their use in immobilized form for the bioremediation of olive oil mill wastewaters

被引：60
|
作者：
Bleve, G. [1 ]
Lezzi, C. [1 ]
Chiriatti, M. A. [1 ]
D'Ostuni, I. [1 ]
Tristezza, M. [1 ]
Di Venere, D. [2 ]
Sergio, L. [2 ]
Mita, G. [1 ]
Grieco, F. [1 ]
机构：
[1] CNR, Inst Sci Food Prod ISPA, Operat Unit Lecce, I-73100 Lecce, Italy
[2] CNR, ISPA, I-70126 Bari, Italy
来源：
BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 02期
关键词：
Bioremediation; Wastewaters; Geotrichum candidum; Yeast biodiversity; Pollution reduction; WASTE-WATER; SACCHAROMYCES-CEREVISIAE; ASPERGILLUS-NIGER; BIODEGRADATION; DETOXIFICATION; DEGRADATION; REMOVAL; STRAINS; SLUDGE;
D O I：
10.1016/j.biortech.2010.09.059
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The yeast population dynamics in olive wastewaters (OMW), sampled in five mills from Salento (Apulia, Southern Italy), were investigated. Three hundred yeasts were isolated in five industrial mills and identified by molecular analysis. Strains belonging to Geotrichum, Saccharomyces, Pichia, Rhodotorula and Candida were detected. Five G. candidum strains were able to grow in OMW as the sole carbon source and to reduce phenolics, chemical oxygen demand (COD) and antimicrobial compounds. One G. candidum isolate was selected for whole-cell immobilization in calcium alginate gel. The COD and phenolic reduction obtained with immobilized cells showed a 2.2- and 2-fold increase compared to the removal obtained with free cells, respectively. The immobilization system enhanced yeast oxidative activity by avoiding the presence of microbial protease in treated OMW. To our knowledge, this is the first report on G. candidum whole-cell immobilization for OMW bioremediation. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：982 / 989
页数：8
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