%0 Journal Article
%T Removal of Organic Acid from Hemicellulose Hydrolysate by Bio-oxidation to Produce Alkali<br>生物氧化产碱去除半纤维素水解物中的有机酸
%A LIU Sheng-Nan
%A QIN Xiang-Xiang
%A ZHANG Hou-Rui
%A CAI Ai-Hua
%A LIN Lan-Ying
%A <br>刘胜男
%A 覃香香
%A 张厚瑞
%A 蔡爱华
%A 林兰英
%J 微生物学通报
%D 2010
%I 
%X Pichia galeiforms B-10 has a good ability to degrade organic acid in hemicellulose hydrolysate, and this depickling activity of the strain is mainly affected by the initial pH value of hydrolysate. If the initial pH value of hemicellulose hydrolysate was adjusted above 5.0, Pichia galeiforms B-10 would exhibit an excellent capability of depickling fermentation without any other treatment. During the metabolism of organic acid salt by Pichia galeiforms B-10, alkali products were generated and this caused the raising of pH value. Therefore, under the condition of pH > 5.0, if only the acid supplying speed (by adding hydrolysate with low pH value) was adjusted to be in balance with the acid metabolizing speed, the fermentation system would always be kept in a high pH circumstance which was advantageous to the metabolism of organic acid by yeast. This mode, by using bio?oxidation to produce alkali for the continuous depickling fermentation, effectively reduced the addition of alkali during the neutralization of hemicellulose hydrolysate, and finally lowered the processing cost and generated less pollutant.
%K Hemicellulose hydrolysate
%K Bio-oxidation to produce alkali
%K Organic acid<br>半纤维素水解物
%K 生物氧化产碱
%K 有机酸
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=78024727B5F4EF6AA9CA8E605B5FC464&aid=1DC2EC6DF4A96D0642A7AC48D95DB351&yid=140ECF96957D60B2&vid=42425781F0B1C26E&iid=F3090AE9B60B7ED1&sid=ED51333671C94F12&eid=30D259683AC50F0D&journal_id=0253-2654&journal_name=微生物学通报&referenced_num=0&reference_num=0