ナカムラ　スミコ   Sumiko Nakamura   中村　澄子    所属   新潟薬科大学  応用生命科学部 応用生命科学科    職種   特任准教授
言語種別	英語
発行・発表の年月	2019
形態種別	論文
査読	査読あり
標題	Relationship between fatty acid composition and starch properties of 30 japonica rice cultivars
執筆形態	共著
掲載誌名	Cereal Chemistry
掲載区分	国外
巻・号・頁	96,pp.228-242
著者・共著者	Sumiko Nakamura, Junji Katsura, Yasuhiro Maruyama, Ken'ichi Ohtsubo
概要	The objectives of the present research are to characterize the fatty acid compositions of the various rice cultivars and to develop the estimation formulae for fatty acid contents based on the pasting properties. We characterized 30 japonica rice cultivars and investigated their relationship in terms of iodine absorption curve, chain length distribution of amylopectin, pasting property, and fatty acid composition of starch lipids. Oleic acid content was negatively correlated with linoleic acid (r = −0.98), and palmitic acid (r = −0.84) (p < 0.01). Rice samples of low degree of polymerization in amylopectin showed high linoleic and linolenic acid content. We developed novel estimation formulae for oleic and linoleic acid content based on pasting properties. These formulae would be useful to evaluate the characteristics of rice cultivars using an RVA.