頁籤選單縮合
題 名 | 油脂中五種合成抗氧化劑之系統分析 |
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作 者 | 楊仕喜; 李美珠; 李樹其; 蘇淑珠; 周薰修; | 書刊名 | 藥物食品分析 |
卷 期 | 1:3 1993.09[民82.09] |
頁 次 | 頁287-296 |
分類號 | 466.11 |
關鍵詞 | 抗氧化劑; 系統分析; 油脂; |
語 文 | 中文(Chinese) |
英文摘要 | A high-performance liquid chromatographic (HPLC) method for simultaneous determination of gallic acid n-propyl ester (PG), tert-butyl hydroquinone (TBHQ), nor-dihydroquaiaretic acid (NDGA), 3-tert-butyl-4-hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) in fats and oils was developed. The samples were dissolved in n-pentane. Aliquot (1 ml) of the pentane solutions was pipetted onto Adsordex RP-18 extraction column (400 mg). The antioxidants were eluted with three 1-ml portions of acetonitrile/2-propanol (1:1). The filtrate and the eluate were collected and mixed. The final volume was adjusted to 4 ml with acetonitrile/2- propanol and determined by HPLC with a UV detector set at 280 nm. The recoveries of PG, TBHQ, NDGA, BHA and BHT fortified to various edible fats and oils were in the range of 92.0--98.1 %, 92.2--99.9%, 98.8--100.7%, 90.5--97.1% and 91.0--97.0%, respectively. Each of the standard and calibration curves for PG, TBHQ, NDGA, BHA and BHT showed a good linear relationship in the range of 2.5--20 ppm. |
本系統中英文摘要資訊取自各篇刊載內容。