Isolation and structural elucidation of unique γ-oryzanol species in rice bran oil

Kazue Sawada, Takuya Nakagami, Halida Rahmania, Midori Matsuki, Junya Ito, Tomoyo Mohri, Yusuke Ogura, Shigefumi Kuwahara, Hiroyuki Hashimoto, Kiyotaka Nakagawa

    研究成果: Article査読

    10 被引用数 (Scopus)


    Even though γ-oryzanol (OZ) such as 24-methylenecycloartanyl ferulate (24MCAFA) is abundant in purified rice bran oil, we realized that the oil contained the prospect of two additional novels of OZ species. To identify this, we isolated and analyzed their chemical structures by using HPLC-UV-MS, NMR, and IR. We revealed for the first time that the oil had also contained cyclobranyl ferulate (CBFA) and cyclosadyl ferulate (CSFA) which are likely to be exist due to the isomerism of 24MCAFA under acid condition. OZ profile including CBFA and CSFA was roughly similar between commercial rice bran oils and processed foods containing the oils, suggesting that people might have often consumed CBFA and CSFA from rice bran oils and/or processed foods. Since different OZ species are known to have different functionality, this study opens the chance to explore more the contribution of CBFA and CSFA for human health and wellness.

    ジャーナルFood Chemistry
    出版ステータスPublished - 2021 2月 1

    ASJC Scopus subject areas

    • 分析化学
    • 食品科学


    「Isolation and structural elucidation of unique γ-oryzanol species in rice bran oil」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。