%0 Journal Article
%T Biological formation of 5-aminolevulinic acid by photosynthetic bacteria
%A LIU Xiu-yan
%A XU Xiang-yang
%A MA Qing-lan
%A WU Wei-hong
%A <br>LIU Xiu-yan
%A XU Xiang-yang
%A MA Qing-lan
%A WU Wei-hong
%J 环境科学学报(英文版)
%D 2005
%I 
%X In this study, 7 stains of Rhodopseudomonas sp. were selected from 36 photosynthetic bacteria stains storied in our laboratory. Rhodopseudomonas sp. strain 99 28 has the highest 5 aminolevulinic acid(ALA) production ability in these 7 strains. Rhodopseudomonas sp. 99 28 strain was mutated using ultraviolet radiation and a mutant strain L 1, which ALA production is higher than wild strain 99 28 about one times, was obtained. The elements affecting ALA formation of strain 99 28 and L 1 were studied. Under the optimal condition(pH 7 5, supplement of ALA dehydratase(ALAD) inhibitor, levulinic acid(LA) and precursors of ALA synthesis, glycine and succinat, 3000 lx of light density), ALA formation of mutant L 1 was up to 22 15 mg/L. Strain L 1 was used to treat wastewater to remove COD Cr and produce ALA. ALA production was 2 819 mg/L, 1 531 mg/L, 2 166 mg/L, and 2 424 mg/L in monosodium glutamate wastewater(MGW), succotash wastewater(SW), brewage wastewater(BW), and citric acid wastewater(CAW) respectively. More than 90% of COD Cr was removed in four kinds of wastewater. When LA, glycin and succinate were supplied, ALA production was dramatically increased, however, COD Cr could hardly be removed.
%K aminolevulinic acid
%K photosynthetic bacteria
%K wastewater<br>光合作用
%K 细菌
%K 生物技术
%K 除草剂
%K 环境污染
%K 农药
%K 废水处理工艺
%K 农产品
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=76EBF72DBE5DEC1C502E148ABD543F05&yid=2DD7160C83D0ACED&vid=BCA2697F357F2001&iid=CA4FD0336C81A37A&sid=04445C1D2BDA24EE&eid=7CE3F1F20DE6B307&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=10