脱苦荷叶茶发酵菌种筛选及工艺优化

    Screening of the Fermentation Strains for the Bitterness-removing Lotus Leaf Tea and Its Process Optimization

    • 摘要: 为研发一款脱苦效果好的荷叶茶,以荷叶为研究对象,接种灵芝、猴头菇和金针菇3种不同的菌丝,通过测定菌丝生长速度、槲皮素含量和单宁含量,筛选最优脱苦荷叶茶的发酵菌丝。结果表明:灵芝菌丝在荷叶茶中的生长速度最快,且发酵后其槲皮素和单宁的含量分别降低了18.37%和79.54%,是3种菌丝中效果最佳的,这说明灵芝菌丝为荷叶茶的最适发酵菌丝。将制得荷叶发酵茶与市售两种普通荷叶茶进行感官评价,评价数据表明荷叶发酵茶的感官品质优于市售普通荷叶茶。最后确定脱苦发酵荷叶茶的最佳工艺为接种量15.0 mL,发酵时间为8 d,发酵温度为(28±1)℃。

       

      Abstract: In order to develop a lotus leaf tea with good bitterness-removing effect, the lotus leaf was used as the research object, and inoculated with three different hyphae of Ganoderma lucidum, Hericium erinaceus and Flammulina velutiper. Then, the optimal fermentation hypha for the bitterness-removing lotus leaf tea was screened by measuring the growth rate of hyphae, the quercetin content and the tannin content. The results showed that the growth rate of Ganoderma lucidum mycelium in the lotus leaf tea was the fastest, and after the fermentation, the contents of quercetin and tannin were reduced by 18.37% and 79.54%, respectively, which had the best effect among the three kinds of hyphae, indicating that Ganoderma lucidum mycelium was the most suitable fermentation mycelium for the lotus leaf tea. The sensory evaluation of the fermented lotus leaf tea and two kinds of common lotus leaf tea sold on the market was carried out, and the evaluation data showed that the sensory quality of the fermented lotus leaf tea was better than that of the common lotus leaf tea sold on the market. At last, the optimum technology for the removal of bitterness and fermentation of lotus leaf tea was determined as follows: the inoculation volume of 15.0 mL, the fermentation time of 8 days, and the fermentation temperature of(28±1)℃.

       

    /

    返回文章
    返回