摘要
利用正交试验研究氮磷供给水平和盐度对杜氏盐藻物质生产能力的影响,发现磷源浓度的影响不显著,而培养基的盐度和氮源浓度影响显著。氮源充足有利于蛋白质生产;低盐度(20‰)有利于蛋白质和总糖生产;中等浓度的氮源(NaNO318.75 mg/L)和高盐(60‰)有利于藻粉干重产出。作为饲料添加成分的高蛋白杜氏盐藻,可采取高盐、高氮培养。如考虑综合利用,对各条件合理组合,也可提高培养效益。
In this study,orthogonal experiments were used to study the nitrogen and phosphorus supply level and salinity on the material production capacity of D.salina.The results showed that the concentra⁃tion of phosphorus had no significant effect on the production of D.salina.The nitrogen concentration significantly affected the material production of D.salina.Among them,sufficient nitrogen supply was beneficial to protein production;low salinity as(20‰)was beneficial to protein and total sugar produc⁃tion;moderate concentration of nitrogen as 18.75 mg/L NaNO3 and high salinity of 60‰was beneficial to algal dry weight production.As for the production of feed ingredients that demand the high protein content of D.salina,cultivation with high salinity and high nitrogen supply can be adopted.If compre⁃hensive utilization is considered for D.salina cells,such factors should be reasonably combined based on different purposes,so as to improve the benefits of D.salina cultivation.
作者
郁彬琦
靳翠丽
刘青
周晓见
YU Binqi;JIN Cuili;LIU Qing;ZHOU Xiaojian(College of Environmental Science&Engineering,Yangzhou University,Jiangsu Yangzhou 225127,China;Marine Science&Technology Institute,Yangzhou University,Jiangsu Yangzhou 225127,China)
出处
《饲料工业》
CAS
北大核心
2021年第3期54-60,共7页
Feed Industry
基金
国家自然科学基金项目[41776156、41271521]
江苏省自然科学基金项目[BK20180940]。
关键词
杜氏盐藻
正交试验
物质生产
培养条件
营养盐供给
Dunaliella salina
orthogonal test
material production
cultivation conditions
nutrient salt supply