Triterpene Alcohol and Fatty Acid Composition of Shea Nuts from Seven African Countries

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概要

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• The content and composition of triterpene alcohol fractions of the non-saponifiable lipids (NSL) along with the fatty acid composition of the kernel fats (n-hexane extracts) of the shea tree (Vitellaria paradoxa; Sapotaceae) were determined for 36 samples from seven sub-Saharan countries: Cote d’ Ivoire, Ghana, Nigeria, Cameroun, Chad, Sudan, and Uganda. The fat content of the kernels, proportion of NSL in the fats, and triterpene alcohols in the NSL are in the range of 30–54, 2–12, and 22–72%, respectively. The triterpene alcohol fractions contained α-amyrin (1), β-amyrin (2), lupeol (3), and butyrospermol (4) as the major constituents along with minor or trace amounts of ψ-taraxasterol (5), taraxasterol (6), parkeol (7), 24-methylene-24-dihydroparkeol (8), 24-methylenecycloartanol (9), dammaradienol (10), and 24-methylenedammarenol (11). Fatty acid composition is dominated by stearic (28–56%) and oleic (34–61%) acids. Shea butters from West African provenances contained in general higher levels of triterpene alcohols and stearic acid than those from East African provenances. Both stearic acid and total triterpene alcohol contents were significantly correlated to the latitude and elevation of the source population, indicating that higher levels of these compounds are found at higher ambient temperatures.

• 日本油化学会の論文

著者

• T. Masters

  World Agroforestry Centre (icraf)

• Akihisa Toshihiro

  College of Science and Technology, Nihon University

• Fukatsu Makoto

  College of Science and Technology, Nihon University

• Akihisa T

  College Of Pharmacy Nihon University

• Akihisa Toshihiro

  日本大学 理工学部

• Akihisa Toshihiro

  College Of Science And Technology Nihon University

• Kojima Nobuo

  College of Science and Technology, Nihon University

• Katoh Naoko

  College of Science and Technology, Nihon University

• Ichimura Yuki

  College of Science and Technology, Nihon University

• Suzuki Hirohisa

  College of Science and Technology, Nihon University

• Maranz Steven

  Department of Microbiology and Immunology, Weill Medical College, Cornell University

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