天麻提取物对灰树花深层发酵胞外蛋白合成的影响

在灰树花深层发酵系统中加入天麻提取物,以灰树花生物量和胞外蛋白合成量为指标,对天麻提取物添加量进行优选;利用HPLC对天麻提取物成分进行分析,研究天麻提取物灭菌前后主要成分(天麻素、对羟基苯甲醇、对羟基苯甲醛及巴利森甙)含量的变化,并研究其促进灰树花生物量和胞外蛋白合成的关键成分在灰树花发酵体系中的含量变化。结果发现,7%(体积分数)天麻提取物可以促进灰树花菌丝体生长和胞外蛋白的合成,生物量和胞外蛋白合成量在发酵第11天时达到最大值;在天麻提取物灭菌后,巴利森甙含量明显减少,天麻素含量明显增加;天麻提取物加入灰树花发酵体系14d后,天麻素、对羟基苯甲醇、对羟基苯甲醛含量均降低,但巴利森甙含量增加了161.11%。

Effect of Gastrodia elata Bl. extracts on the biosynthesis of extracellular proteins in the Grifola frondosa under submerged fermentation

Gastrodia elata Bl. extracts was added into the system of Grifola frondosa submerged fermentation, and then supplement-ation of Gastrodia elata Bl. extracts were optimized according to the biomass and the synthetic quality of extracellular proteins in G. frondosa. The changes of components in G. elata Bl. extracts before and after the sterilization, including gastrodin, p-hydroxybenzyl alcohol, p-hydroxybenzaldehyde, and parishin, were analyzed using HPLC. Moreover, the relationship of this changes between G. elata Bl. extracts and the in G. frondosa fermentation system were also investigated. The results revealed that 7% (v/v) G. elata Bl. extracts could facilitate G. frondosa to grow and produce extracellular proteins, and the content of two experimental indexes reached the maximum 11 days after the submerged fermentation of G. frondosa. It was found that the content of parishin in the extracts from G. elata Bl. decreased after sterilization, while the content of gastrodin increased obviously. Furthermore, the extracts from G. elata Bl. were added into the system of G. frondosa submerged fermentation and then they were incubated for 14 days. Finally, the contents of p-hydroxybenzyl alcohol and p-hydroxybenzaldehyde decreased, nevertheless parishin increased by 161.11%.