山西农业大学学报（自然科学版）2018，Vol.38Issue(3)：30-35,6.DOI:10.13842/j.cnki.issn1671-8151.201711007
利用赤霉素提高微藻耐酸性的研究
Acid resistance of micro-algae in relation to gibberallin
摘要
Abstract
[Objective]Micro-algae cultivation on coal-based flue gas has received considerable interests as a potential way for carbon dioxide(CO2)fixation,and nitrous oxides(NOx)and sulfur oxides(SOx)elimination.It is also an ef-fective and easy method to reduce the cost for high value-added products of micro-algae.However,high concentrations of CO2,NOx,and SOxin the flue gas cause rapid acidification of the culture medium,w hich seriously inhibit the growth of micro-algae.Therefore,it is necessary to find acidity-resistant microalgae strains or to improve the acid re-sistant ability of micro-algae.[Methods]The strain with the highest acid resistance was select from six micro-algal strains which were cultivated in acid medium(pH=3.0).The effect of gibberellin at different concentrations on micro-algae growth was tested.[Results],Scenedesmus was the micro-algal strain with the fastest growth rate and the stron-gest acid resistance at pH 3.0 medium conditions.The growth of Scenedesmus was enhanced by gibberellin between 5 to 25 mg·L —1with the highest growth rate at 10 mg·L —1.When pH of the medium with[gibberellin]at 10 mg·L —1 was adjusted to 2.5,the same value as that of flue gas,four to six days were required for Scenedesmus adaptation to, growth in new environment.The highest biomass accumulation was reached in 10 days at 0.45 g·L —1(DW),and at the same time the Scenedesmus strain in control treatment(0 mg·L —1of gibberellin)became white color and died.[Con-clusion]The growth rate and acid resistant ability of Scenedesmus were produced by adding gibberellin at 10 mg·L —1in acidification culture medium.[Significance]The study provided solid evidence for establishing and optimizing the tech-nology using micro-algae to fix and eliminate CO2,NOx,and SOxin flue gas.关键词
烟道气/栅藻/赤霉素/耐酸性Key words
Flue gas/Scenedesmus/Gibberellin/Acid resistance分类
农业科技引用本文复制引用
史飞飞,程宇娇,马浩天,程蔚兰,宋程飞,李润植..利用赤霉素提高微藻耐酸性的研究[J].山西农业大学学报（自然科学版）,2018,38(3):30-35,6.基金项目
国家"948"项目(2014-Z39) （2014-Z39）
山西省煤基重点科技攻关项目(FT-2014-01) （FT-2014-01）
山西省重点研发计划重点项目(201603D312005) （201603D312005）
