测定红色油中游离脂肪酸含量方法的开发。
Development of methods for determining free fatty acid contents in red colored oils.
作者信息
Choi HyungSeok, Kim ChanHyung, Choi Hyuk, Lee JaeHwan
机构信息
Department of Food Science and Biotechnology, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419 Republic of Korea.
出版信息
Food Sci Biotechnol. 2021 Aug 29;30(11):1435-1443. doi: 10.1007/s10068-021-00964-2. eCollection 2021 Oct.
UNLABELLED
Buah merah oil and red palm oil are red colored and unrefined edible oils. Because of this color characteristic, measuring acid value by titration method can be uncertain and subjective, so more accurate and objective methods are needed. Gas chromatography-flame ionization detector (GC-FID) and high-performance liquid chromatography-evaporative light scattering detector (HPLC-ELSD) methods were developed to determine acid value in 3 buah merah oils and 1 red palm oil by measuring free fatty acid contents. The acid value was high in the order of titration > GC-FID > HPLC-ELSD in all samples. GC-FID method showed accurate and reliable results, whereas HPLC-ELSD showed rough data partly due to the non-linear standard curve and high limit of detection. Difference in acid value between titration method and GC-FID might be due to unrefined components that reacted with KOH titration solution. GC-FID can be used measuring free fatty acid contents in red colored oils.
SUPPLEMENTARY INFORMATION
The online version contains supplementary material available at 10.1007/s10068-021-00964-2.
未标注
红毛丹油和红棕榈油是红色的未精炼食用油。由于这种颜色特性，用滴定法测量酸值可能不确定且主观，因此需要更准确和客观的方法。开发了气相色谱 - 火焰离子化检测器（GC - FID）和高效液相色谱 - 蒸发光散射检测器（HPLC - ELSD）方法，通过测量游离脂肪酸含量来测定3种红毛丹油和1种红棕榈油中的酸值。在所有样品中，酸值顺序为滴定法＞GC - FID＞HPLC - ELSD。GC - FID方法显示出准确可靠的结果，而HPLC - ELSD显示的数据粗略，部分原因是标准曲线非线性和检测限高。滴定法和GC - FID之间酸值的差异可能是由于未精炼成分与氢氧化钾滴定溶液发生了反应。GC - FID可用于测量红色油中的游离脂肪酸含量。
补充信息
在线版本包含可在10.1007/s10068 - 021 - 00964 - 2获取的补充材料。
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