Jung Mun Yhung, Park Ji Su, Yoon Suk Hoo
Department of Food Science and Culinary Art, Woosuk Unversity, Samnye, Jeonbuk, 55338 Korea.
2Food Analysis Center, Korea Food Research Institute, Seongnam, Gyeonggi, 13539 Korea.
Food Sci Biotechnol. 2016 Feb 29;25(1):121-124. doi: 10.1007/s10068-016-0018-6. eCollection 2016.
Conjugated linoleic acid contents in hydrogenated vegetable oils were differentially determined using refractive indices when the iodine value could not be used. The refractive indices of soybean oil, cottonseed oil, and corn oil varied linearly with changes of linoleic acid contents of individual oils with determination coefficients of 0.91, 0.98, and 0.98, respectively. The refractive index can be used as a simple and fast method for control of the hydrogenation process of vegetable oils to obtain a desired conjugated linoleic acid content without fatty acid compositional analysis.
当无法使用碘值时，利用折射率对氢化植物油中的共轭亚油酸含量进行差异测定。大豆油、棉籽油和玉米油的折射率随各油脂中亚油酸含量的变化呈线性变化，测定系数分别为0.91、0.98和0.98。折射率可作为一种简单快速的方法，用于控制植物油的氢化过程，以获得所需的共轭亚油酸含量，而无需进行脂肪酸组成分析。
