Postharvest handling of soybeans: effects on oil quality
1979
Mounts, T.L. | List, G.R. | Heakin, A.J.
Effects of postharvest handling (such as storage and transportation) of soybeans on the quality of extracted oil were evaluated. Identity-preserved export shipments of soybeans were sampled at origin points and at destination ports. Samples of new crop beans were also acquired from domestic elevators. Lots were separated to yield three fractions each: original, whole beans, and split beans. Crude oil extracted from each fraction was characterized for free fatty acid content, iron content, peroxide value, phosphatide, nonhydratable phosphatide, color, Chromatographic refining loss, and fatty acid composition. Oil extracted from split beans had free fatty acid and iron contents significantly greater than those of oil from whole beans. These two deleterious qualities of crude oils were found to increase during shipment. Degumming studies showed an increase in the nonhydratable phosphatide content of extracted oil due to shipment.
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