Sterilization effect of 60Co-γ-ray irradiation and its effect on physicochemical characters of soy isoflavones capsules
Objective To observe the sterilization efficacy and effectiveness of 60Co-γ irradiation sterilization on soy isoflavone capsules.Methods Microbial quantitative cultivation and physicochemical analysis methods were used to observe the effect of 60Co-γ radiation on quality of soy isoflavone capsules and sterilization efficacy.Results After treated with 60Co-γ-rays at 10 kGy,the appearance of soy isoflavone capsules exhibited no changes,and the disintegration time was up to the standards.There was no significant difference in the contents of three main components(P>0.05).There were 14 common peaks in chromatographic fingerprint with a similarity of≥0.999,and there were no significant difference in the chromatogram.Microorganisms in the irradiated soy isoflavone capsules significantly decreased.Conclusion 60Co-γ irradiation has no significant effect on the quality of soy isoflavone capsules and can effectly reduce the microorganisms in soy isoflavone capsules.
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