Abstract
Objective To study the effects of the packaging materials on its quality changes during soybean storage.Methods Three kinds of packaging materials ( PE, PA / PE, BOPP / PA / PE, PET / Al / PA / PE) were used for vacuum packaging of soybeans, changes of quality index were monitored during the storage of soybeans using the conventional method and different packaging materials, and the influence of packaging materials on soybean preservation was studied. Results The results showed that the important quality indexes of soybeans with film packaging were better than those of the control group. After 18 months of storage, the fatty acid values of soybeans with three kinds of packagings were 20. 2 mg / 100 g, 15. 5 mg / 100 g and 13. 7 mg / 100 g, respectively, while the fatty acid value of the control group was 28. 6 mg / 100 g, showing signs of aging. The protein dissolution rates of soybeans with three different film packagings were 71% , 75. 8% and 74. 2% , respectively, while the the soybean protein dissolution rate of the control was 61. 8% , which was higher than the critical value defined by the national standard. Conclusion That packaging materials can significantly improve the storage quality of soybeans, and the barrier property of the material had most significant effect on the preservation of soybeans. Among the three kinds of thin films,BOPP / PA / PE showed the optimal preservation effect.
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DONG Wen-li.
Effects of Packaging Materials on Soybean Storage Quality[J]. Packaging Engineering. 2014(3): 39-42
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