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Quality change of soybean with different moisture content under simulated storage and transportation condition |
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DOI: |
KeyWord:soybean storage and transportation moisture heat damage quality |
FundProject:国家粮油作物产品质量安全风险评估专项(GJFP2018001);中国农业科学院科技创新工程项目;国家重点研发计划项目(2017YFF0201803) |
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Abstract: |
With soybean from Brazil as raw material, the quality change of soybean with different moisture content in 50 d was observed by simulating the environment in the cargo ship cabin. The quality indexes of soybean including heat damaged rate, moldy rate, crude protein content, crude fat content, protein solubility and fat acid value were determined. The results showed that the higher the moisture content of soybean, the greater the impact on the temperature of soybean pile, and then the greater the impact on the quality indexes of soybean. When the moisture content of soybean was not more than 12%, all indexes changed not obviously, and the soybean could be stored safely for a long time. When the moisture content was 13%, the quality indexes changed obviously after storage for more than 20 d. When the moisture content was more than or equal to 14%, all indexes changed significantly in the short term and the soybean was not resistant to storage. High moisture content led to the high temperature of the soybean pile, and then caused the growth of mould, the increase of heat damaged rate, moldy rate, fat acid value, and the decrease of protein solubility. The contents of crude protein and crude fat also decreased slightly. The results could provide a theoretical basis for the scientific description of the quality changes of imported soybean during sea transportation and the objective assessment of economic losses. |
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