1. Functional effects of Japanese style fermented soy sauce (shoyu) and its components;Kataoka;J. Biosci. Bioeng.,2005
2. Feasibility and effect on blood pressure of 6-week trial of low sodium soy sauce and miso;Nakamura;CIRC J.,2003
3. G. Motoki, M. Sasaki, K. Uchida, H. Yoshino, Preparation of Low Salt Soy, Japan Patent 52,120,197 (1977).
4. A. Otomi, T. Furukawa, Y. Kitakura, S. Someya, H. Hashimoto, Preparation of Soy Sauce, Japan Patent 4,016,162 (1992).
5. T. Furukawa, Y. Okamoto, M. Osaki, Production of Soy Sauce Having Reduced Salt, Japan Patent 4,271,764 (1992).