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| Effects of nitrogen gas conditioning storage on the quality of soybean and its oil |
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| DOI： |
| KeyWord:nitrogen gas conditioning soybean soybean oil heat-damaged kernel rate acid value vitamin E |
| FundProject: |
| Author Name | Affiliation | | LI Lingli1, TENG Jinling1, JIANG Jianguo1, SONG Yuyi2,
LIU Xiaoqian1, LU Benpeng1 | 1.China Tex Grains and Oils (Rizhao) Co. , Ltd. , Rizhao 276826, Shandong, China
2.Feixian COFCO Oils and Grains Industries Co. , Ltd. , Linyi 273400, Shandong, China |
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| Abstract: |
| Aiming to provide a basis for the implementation and promotion of the nitrogen gas conditioning storage technology for soybean, using non-nitrogen gas conditioning storage as a control, the effects of conditioning storage with different nitrogen gas volume fractions (98%, 88%) at 45 ℃ on the heat-damaged kernel rate of soybean from different countries and acid value and vitamin E content of soybean oil extracted from them were investigated. The results indicated that the increase in the heat-damaged kernel rate of soybean after 120 d conditioning storage with 98% and 88% nitrogen gas volume fractions,and the increase of acid value and the loss of vitamin E content in soybean oil extracted from soybean after 30 d of nitrogen gas conditioning storage were all lower than those in non-nitrogen gas conditioning storage. However, there was little difference in the impact on the heat-damaged kernel rate of soybean and the acid value and vitamin E content in soybean oil between the 98% and 88% nitrogen volume fraction conditions. Additionally, under the same nitrogen gas conditioning storage conditions, the quality of Brazilian soybean and its oil was lower than that of American soybean and Uruguayan soybean. In conclusion, nitrogen gas conditioning storage can delay the increase in the heat-damaged kernel rate of soybean and the acid value of the extracted soybean oil, as well as the loss of vitamin E to some extent. |
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