J.of Soc of Agri Struc, Japan.
Vol.30,No.2 September 1999,137-144
Original:
Language: Japanese

    In order to limit the grouch of microorganisms during processing of germinated brown rice (GBR), three kinds of operadons for sanitation control were investigated. For a surface-disinfection treatment of brown rice. soaking in 1% of sodium hypochlorite for 10 min. and 0.1% of calcium preparation solutions for 10 min. at 30^oC, resulted in 2 log decrease by aerobic plate countlin culture water after 1 h of the germination processing. Soaking in 10% of sodium hypochlorite for 10 min. and 1% of calcium preparation solutions for 10 min at 30^oC were found to inhibit germination, respectively. During the germination processing, including aeration stage and non-aeration stage, continuous ultraviolet irradiation on the culture water in the water tank resulted in limited bacterial growth in culture water below 10²CFU/ml by aerobic plate count. Moreover, the turbidity of the culture water was improved by filtration of the stored water using activated carbon-hollow fiber filter. The Altration by activated carbon-hollow Bber filter during the germination processing was an effective method to eliminate microorganisms and contamination factor during GBR production. It also improved the efficiency of ultraviolet irradiation effect on the culture water.

Keywords: Altration, food additive, germinated brown rice, sterilization, ultraviolet

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