Nutrients 2011, 3(4), 505-514; doi:10.3390/nu3040505
Article

Variation in Fatty Acid Distribution of Different Acyl Lipids in Rice (Oryza sativa L.) Brans

Hiromi Yoshida 1,2,* email, Takaaki Tanigawa 1 email, Isoko Kuriyama 1 email, Naoko Yoshida 3 email, Yuka Tomiyama 1 email and Yoshiyuki Mizushina 1,2 email
1 Department of Nutritional Science, Kobe Gakuin University, Kobe, Hyogo 651-2180, Japan 2 Cooperative Research Center of Life Sciences, Kobe Gakuin University, Kobe, Hyogo 650-8586, Japan 3 Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
* Author to whom correspondence should be addressed.
Received: 8 March 2011; in revised form: 5 April 2011 / Accepted: 18 April 2011 / Published: 21 April 2011
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Abstract: The lipids extracted from rice brans were classified by thin-layer chromatography into eight fractions, and their fatty acid (FA) compositions were investigated among five different Japanese cultivars. The lipids of these rice brans comprised mainly triacylglycerols (TAG; 84.9–86.0 wt%), free FA (4.2–4.6 wt%), and phospholipids (PL; 6.5–6.7 wt%), whilst other components were also detected in minor proportions (0.2–2.1 wt%). The PL components included phosphatidyl choline (43.3–46.8 wt%) phosphatidyl ethanolamine (25.0–27.3 wt%) and phosphatidyl inositol (20.2–23.2 wt%). Comparison of the different cultivars showed, with a few exceptions, no substantial difference (P > 0.05) in FA distribution. FA distribution of TAG among the five cultivars was characterized as: unsaturated FA predominantly concentrated at the sn-2 position and saturated FA primarily occupying the sn-1 or sn-3 position in these lipids. These results suggest that the rice bran lipids may be well incorporated into our daily diet to improve nutritional value of the Japanese diet.
Keywords: different acyl lipids; fatty acid distributions; phospholipids; rice bran lipids; triacylglycerols

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MDPI and ACS Style

Yoshida, H.; Tanigawa, T.; Kuriyama, I.; Yoshida, N.; Tomiyama, Y.; Mizushina, Y. Variation in Fatty Acid Distribution of Different Acyl Lipids in Rice (Oryza sativa L.) Brans. Nutrients 2011, 3, 505-514.

AMA Style

Yoshida H, Tanigawa T, Kuriyama I, Yoshida N, Tomiyama Y, Mizushina Y. Variation in Fatty Acid Distribution of Different Acyl Lipids in Rice (Oryza sativa L.) Brans. Nutrients. 2011; 3(4):505-514.

Chicago/Turabian Style

Yoshida, Hiromi; Tanigawa, Takaaki; Kuriyama, Isoko; Yoshida, Naoko; Tomiyama, Yuka; Mizushina, Yoshiyuki. 2011. "Variation in Fatty Acid Distribution of Different Acyl Lipids in Rice (Oryza sativa L.) Brans." Nutrients 3, no. 4: 505-514.

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