Method for preparing instant black tea by utilizing microbial liquid fermentation
A liquid fermentation and microbial technology, which is applied in tea extraction and pre-extraction tea treatment, etc., can solve the problems of long fermentation period, extensive processing, and difficult process control.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0020] Sun-dried green tea with large leaves from Yunnan to remove non-tea impurities, homogenized and crushed, then soaked with water, the amount of water added is 1:8, steamed at high temperature to prepare fermentation material; , Penicillium and saccharomyces were co-inoculated in the liquid medium, and the shake flask was cultivated at 28°C for 60h, and the obtained seed liquid was inserted in a weight ratio of 5% of the fermentation material. The temperature of the fermentation process was 25°C, and the oxygen flow rate was 0.3 L / min, the stirring speed is 350rpm, the cycle is 8 days, and finally the fermented liquid is obtained; the fermented liquid is inactivated, centrifuged or filtered to obtain fermented tea juice, and then concentrated and dried to obtain instant black tea powder.
Embodiment 2
[0022] Sun-dried green tea with large leaves from Yunnan to remove non-tea impurities, homogenate and crush it, add water to infiltrate, the amount of water added is 1:10, and steam the material at high temperature to prepare fermentation material; , Penicillium and saccharomyces were co-inoculated in the liquid medium, and cultured in shake flasks at 24°C for 72h, and the obtained seed liquid was inserted in a weight ratio of 6.5% of the fermentation material. The temperature of the fermentation process was 30°C, and the oxygen flow rate was 2.5 L / min, the stirring speed is 250rpm, the cycle is 6 days, and finally the fermented liquid is obtained; the fermented liquid is inactivated, centrifuged or filtered to obtain fermented tea juice, and then concentrated and dried to obtain instant black tea powder.
Embodiment 3
[0024] Sun-dried green tea with large leaves from Yunnan to remove non-tea impurities, homogenate and crush it, add water to infiltrate, the amount of water added is 1:13, and steam the material at high temperature to prepare fermentation material; , Penicillium and saccharomyces were co-inoculated in the liquid medium, and cultured in shake flasks at 30°C for 48 hours, and the obtained seed liquid was inserted in a weight ratio of 3.5% of the fermentation material. The temperature of the fermentation process was 20°C, and the oxygen flow rate was 1.2 L / min, the stirring speed is 220rpm, the cycle is 10 days, and finally the fermented liquid is obtained; the fermented liquid is inactivated, centrifuged or filtered to obtain fermented tea juice, and then concentrated and dried to obtain instant black tea powder.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More