碳源和乙醇调控雨生红球藻生长与虾青素积累Different carbon sources plus ethanol improve the growth rate and astaxanthin accumulation in Haematococcus pluvialis
王晓丹;程蔚兰;赵熙宁;史飞飞;杭伟;季春丽;李润植;
摘要(Abstract):
[目的]雨生红球藻(Haematococcus pluvialis)生长速率和虾青素积累量决定着雨生红球藻商业化生产的经济效益。本文旨在建立提高雨生红球藻生长和虾青素积累的新方法。[方法]以BG-11为基础培养基,分别以乙酸钠和二氧化碳为碳源,添加少量乙醇,探讨乙醇和碳源对雨生红球藻生长及虾青素积累的效应。[结果]添加乙醇显著提高了雨生红球藻生长及虾青素积累。(BG-11+乙酸钠)+乙醇培养的雨生红球藻生长迅速,在第4天细胞密度上升到1.587×106 cells·mL~(-1),而对照组(BG-11+乙酸钠)在第8天细胞密度才上升到1.187×106 cells·mL~(-1)。(BG-11+乙酸钠)+乙醇培养的雨生红球藻在第14天生物量和虾青素含量分别达2.74g·L-1和3.51%(干重),分别是对照组的2.98倍和1.71倍,显著高于对照组。同样,(BG-11+CO2)+乙醇培养的雨生红球藻在第6天细胞密度上升到1.236×106cells·mL~(-1),在第14天生物量和虾青素含量分别达2.59g·L-1和3.1%(干重),均高于对照组(BG-11+CO2)的生物量(0.7g·L-1)和虾青素含量(1.43%,干重)。[结论]研究结果为建立基于添加乙醇提高雨生红球藻生长速率和虾青素积累量的简单易行规模化技术体系提供了科学参考。
关键词(KeyWords): 雨生红球藻;;虾青素;;碳源;;乙醇
基金项目(Foundation): 国家“948”项目(2014-Z39);; 山西省煤基重点科技攻关项目(FT-2014-01);; 山西省重点科技项目(201603D312005)
作者(Author): 王晓丹;程蔚兰;赵熙宁;史飞飞;杭伟;季春丽;李润植;
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