虾青素
雨生红球菌
牛磺酸
生物化学
化学
下调和上调
细胞生物学
食品科学
生物
类胡萝卜素
氨基酸
基因
作者
Liuquan Zhang,Tao Hu,Shiqi Yao,Chaoyang Hu,Hailiang Xing,Kai Liu,Xue Sun,Nianjun Xu
标识
DOI:10.1016/j.biortech.2023.129802
摘要
This study explored the use of taurine in enhancing the production and bio-accessibility of astaxanthin in Haematococcus pluvialis, which typically forms a secondary cell wall hindering astaxanthin extraction. The biomass of taurine-treated group significantly increased by 18%, and astaxanthin yield surged by 34% in comparison to the control group. Without cell disruption, astaxanthin recovery from thin-walled cells in the taurine-treated group, using dimethyl sulfoxide and ethanol as extraction reagents, was 97% and 75%, respectively, which were 30-fold higher than those of thick-walled cells in the control group. Additionally, the cell fragmentation rate increased by 86% in taurine-treated group relative to the control group. Comparative transcriptome analysis identified taurine-induced upregulation of genes involved in the astaxanthin biosynthesis pathway and downregulation of those associated with secondary cell wall synthesis. This study thus offers an innovative taurine-based strategy to enhance astaxanthin production and bio-accessibility while shedding light on the mechanisms driving this process.
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