Effect of extraction solvents on oxidative stability of crude soybean oil

In-Hwan Kim, Suk Hoo Yoon

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Oxidative stabilities of crude soybean oils obtained by different extraction solvents such as hexane, water and Folch's solvent (mixture of two volumes of chloroform and one volume of methanol) were determined by gas chromatographic analyses of headspace and peroxide value of oil samples. For the determination of oxidative stability of oil samples, total volatile compounds formation, molecular oxygen disappearance in the headspace and peroxide value of oil samples were measured. Iodine value (133-136), saponification value (195-198), unsaponifiable matters (0.3-0.4%), iron (0.6 ppm), sterols content (2,400-2,590 ppm), tocopherols content (1,250-1,520 ppm) and fatty acid composition of crude oils obtained by different solvent extraction were not significantly different. Acid value of Folch-extracted oil was the highest as 1.3, whereas those of hexane-and aqueous-extracted oils were 0.5 and 0.4, respectively. Crude soybean oil extracted by Folch's method was found to contain the most phosphorus, while hexane- and aqueous-extracted oils contained similar amounts of phosphorous. Crude soybean oil obtained by Folch extraction was most stable in oil oxidation, and oxidative stabilities of oils obtained by hexane and aqueous extraction, which were significantly much less stable than Folch-extracted oil, were not significantly different during ten weeks storage.

Original languageEnglish
Pages (from-to)165-167
Number of pages3
JournalJournal of the American Oil Chemists' Society
Volume67
Issue number3
DOIs
Publication statusPublished - 1990 Mar 1
Externally publishedYes

Fingerprint

Soybean oil
Soybean Oil
Petroleum
Solvent extraction
oxidative stability
soybean oil
Oils
oils
Hexanes
Hexane
hexane
Peroxides
peroxide value
headspace analysis
water
Saponification
Tocopherols
Molecular oxygen
Sterols
saponification

ASJC Scopus subject areas

  • Food Science
  • Chemistry (miscellaneous)

Cite this

Effect of extraction solvents on oxidative stability of crude soybean oil. / Kim, In-Hwan; Yoon, Suk Hoo.

In: Journal of the American Oil Chemists' Society, Vol. 67, No. 3, 01.03.1990, p. 165-167.

Research output: Contribution to journalArticle

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