Biological treatment of olive mill wastewater by non-conventional yeasts
Biological treatment of olive mill wastewater by non-conventional yeasts
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DOI：
10.1016/j.biortech.2009.01.004
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发表时间：
2009-08-01
影响因子：
11.4
通讯作者：
Belo, Isabel
中科院分区：
文献类型：
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作者：
Goncalves, Cristiana;Lopes, Marlene;Belo, Isabel
测试了脂肪分解酵母菌在基于橄榄磨废水(OW)的培养基上生长并在降解这些废物的同时产生高价值化合物的能力。对从葡萄牙北部地区三相橄榄磨收集的OW进行了表征和使用。在化学需氧量为100g L-1~200g L-1的废水中添加酵母膏和氯化铵。对皱纹假丝酵母菌、圆柱念珠菌和溶脂亚罗维菌进行了分批培养，研究了它们对水分的消耗情况。所有菌株均能在不稀释的基于OW的培养基中生长，消耗还原糖和降低COD。柱状芽孢杆菌是产酶能力最强的菌株，对酚类物质和COD的降解效果最好。对于所有菌株来说，酚类物质的降解都是相当困难的，主要是当培养基中仍然存在更容易降解的碳源时。在所测试的酚类化合物中，邻苯二酚对细胞的抑制作用最强。(C)2009爱思唯尔有限公司。保留所有权利。
The ability of lipolytic yeasts to grow on olive mill wastewater (OMW)-based medium and to produce high-value compounds while degrading this waste, was tested. OMW collected from three-phase olive mills from the North region of Portugal were characterized and used. OMW with COD ranging from 100 g L-1 to 200 g L-1 were supplemented with yeast extract and ammonium chloride. Studies of OMW consumption were carried out in batch cultures of Candida rugosa, Candida cylindracea and Yarrowia lipolytica. All strains were able to grow in the OMW-based media, without dilution, to consume reducing sugars and to reduce COD. C. cylindracea was the best strain concerning the lipase production and the reduction of phenolic compounds and COD. For all strains, the phenols degradation was quite difficult, mostly when more easily degradable carbon source is still present in the medium. Among the phenolic compounds tested catechol is the most inhibitory to the cells. (C) 2009 Elsevier Ltd. All rights reserved.