[1] Nelson Mandela African Inst Sci & Technol, Dept Food Biotechnol & Nutr Sci, POB 447, Arusha, Tanzania
[2] Shinshu Univ, Grad Sch Sci & Technol, 8304 Minamiminowa, Nagano 3994598, Japan
[3] Shinshu Univ, Inst Biomed Sci, 8304 Minamiminowa, Nagano 3994598, Japan