RESEARCH ON PRODUCTION TECHNOLOGY OF GREEN TEA OF PELLET

Abstract

Vietnam's current green tea products are mainly in form of fiber such as Tan Cuong Thai Nguyen green tea, Shan Tuyet Ha Giang green tea; Suoi Giang, Yen Bai; Ta Xua, Son La... The article presents the results of research on technology for producing green tea of pellet from the Phuc Van Tien tea variety, grown in Phu Ho, Phu Tho to diversify of Vietnam's tea products. The results of the article show that the technical parameters when producing green tea of pellet are: Slight wilt of fresh tea at a thickness of 3-5cm, withering time of 5-6 hours, remaining moisture of 72.0%-73.2 %. The amount of tea for yeast-killing is 10 kg, time is 8 minutes, temperature is 300oC, remaining humidity is 62.0%. Crush the tea 2 times, 25-30 minutes. Slight drying at 100oC, time 12-15 minutes, remaining moisture is 30-33%. The time of balance for moisture is 30-40 minutes, the volume of tea is 5-10 kg/nong. First shaping from 16-18 kg/pan, time 30-40 minutes. The amount of tea for the second shaping is from 20-22 kg/pan, time 30-50 minutes. Drying for scent at a temperature of 90oC, time 75-80 minutes, the product is of good quality and has a sensory score of 17.7.