*Ayumi Tomizawa¹, Masako Abe², Yasuko Sone¹, Wataru Kobayashi³, Yosio Ozawa⁴, Sonoko Ayabe¹ (1. Takasaki University of Health and Welfare ・Graduate schoo, 2. Takasaki University of Health and Welfare , 3. Jumonji University, 4. Takasaki University of Health and Welfare (Former))

*Wataru Kobayashi¹, Ayumi Tomizawa², Misaki Kurawaka¹, Akio Watanabe¹, Masako Abe³, Sonoko Ayabe² (1. Jumonji University, 2. Takasaki University of Health and Welfare Graduate School, 3. Takasaki University of Health and Welfare)

*Atsushi Ikegaya^1,2, Tomoyasu Toyoizumi^2,3, Toru Kosugi² (1. Shizuoka Professional University Junior College of Agriculture, 2. Shizuoka Prefectural Research Institute of Agriculture and Forestry, 3. Tea Research Center, Shizuoka Research Institute of Agriculture and Forestry)