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Jaocs news feature: Collaborative study of the determination of total oil in sunflower seed
Author(s) -
Robertson James A.
Publication year - 1974
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02545183
Subject(s) - sunflower , sunflower seed , water content , sunflower oil , grinding , mathematics , agronomy , moisture , horticulture , helianthus annuus , environmental science , chemistry , biology , engineering , materials science , food science , geotechnical engineering , composite material , organic chemistry
A collaborative study was made of two methods for determining the total oil content of sunflower seed. The seed of three sunflower varieties of low, medium, and high oil content were analyzed on different days by 12 collaborators. In one method, the sunflower seeds were ground with an equivalent wt of diatomaceous earth. In the second method, the seeds were ground with a high‐speed grinder without diatomaceous earth. The method using diatomaceous earth in the grinding of the seed gave a significantly higher oil content for all three varieties. It was recommended that total oil on a per cent dry wt basis be calculated from the moisture determination of the whole seed and not from the moisture of ground sample, which was too variable.