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| Quality changes of imported soybeans during storage |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.230397 |
| KeyWord:American soybeans Brazilian soybeans heat-damage high-temperature storage quality change |
| FundProject: |
| Author Name | Affiliation | | ZHENG Youtao, ZENG Jianhao, SUN Yuping, CHEN Wei,
YANG Ya, QIU Changlu, FU Wenzhi | (COFCO (Dongguan)Grain and Oil Industry Co. , Ltd. , Dongguan 523145,Guangdong,China) |
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| Abstract: |
| Aiming to provide reference for the safe storage and production practice of imported soybeans, a targeted experimental plan simulating the environmental conditions of soybeans during static storage in silos was developed to study their quality changes at different storage temperatures by combining the quality characteristics of American soybeans and Brazilian soybeans at the port. The results showed that in accelerated simulated storage test, Brazilian soybeans with moisture content of 13.00%, crude fat acidity of 1.24 mgKOH/g, and percent of heat-damaged kernel of 0.27% were found to have a shelf life of only about 105 d at 36 ℃, and at 40 ℃, the shelf life was shortened to about 90 d. Brazilian soybeans with moisture content of 13.78%, crude fat acidity of 2.31 mgKOH/g, and percent of heat-damaged kernel of 2.86% were suitable for storage for no more than 30 d at both 36 ℃ and 40 ℃. The American soybeans with moisture content of 10.85%, crude fat acidity of 0.80 mgKOH/g, and percent of heat-damaged kernel of 0.27% had a crude fat acidity of 2.25 mgKOH/g after being stored for 77 d in an accelerated simulated experiment at 40 ℃, and even at 45 ℃, the crude fat acidity was only 3.05 mgKOH/g, which still met the suitable storage requirements for high oil soybeans. In conclusion, American soybeans exhibit significantly better high-temperature resistance than Brazilian soybeans, both in actual storage and under high-temperature conditions during accelerated simulated storage tests. Oil and fat enterprises should comprehensively evaluate the processing materials based on the quality characteristics and processing plans of their soybeans production areas, and coordinate production and sales. |
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