3 Department of Nutrition and Food Hygiene, School of Public Health, Hebei Medical University, Hebei 050017, China.
4 Department of Food, Life and Environmental Science, Faculty of Agriculture, Yamagata University, 1-23 Wakaba-machi, Tsuruoka, Yamagata 997-8555, Japan.
5 Kochi Agricultural Research Center, 1100 Hataeda, Nankoku, Kochi 783-0023, Japan.
6 Institute of Vegetable and Floriculture Science, NARO, 360 Kusawa, Ano-cho, Tsu, Mie 514-2392, Japan.
7 Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304, Minamiminowa, Nagano 399-4598, Japan; Institute of Agriculture, Academic Assembly, Shinshu University, 8304, Minamiminowa, Nagano 399-4598, Japan. Electronic address: knakamu@shinshu-u.ac.jp.