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題名 | 攜帶型氣相層析儀應用於食用油之分析=Analysis of Edible Oils Using Portable Gas Chromatography |
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作者 | 尹華文; 呂勝由; 陳正豐; | 書刊名 | 林產工業 |
卷期 | 30:3 2011.09[民100.09] |
頁次 | 頁167-177 |
分類號 | 341.91 |
關鍵詞 | 苦茶油; 橄欖油; 食用油; 摻偽; 攜帶型氣相層析儀; Camellia seed oil; Olive oil; Edible oil; Adulteration; Portable gas chromatography; |
語文 | 中文(Chinese) |
中文摘要 | 傳統上,植物油之種類與優劣是以感官評價,就其特有的顏色及香氣判斷之,但對油品的純度或摻雜其他植物油時,則缺乏客觀的評估指標。目前,係先進行酯化反應,再行分析,則有時間長、產率低等缺點。為克服此問題,本試驗利用攜帶型氣相層析儀,就市售的苦茶油等各種油品,不經酯化處理,即直接分析其揮發性成份,而行鑑別。試驗結果顯示:苦茶油及各種油品都有其獨特的指紋圖譜,故可依各揮發成份之滯留時間差異,作為鑑別的依據;當油中摻雜其他植物油時,則可將各圖譜以疊圖處理,由所呈現相同的滯留時間,而得以確認所摻入油品的種類。本研究首次利用攜帶型氣相層析儀應用於檢測苦茶油、各種食用油脂及其摻偽,證實較傳統酯化分析簡易、快速、便捷。 |
英文摘要 | Traditionally, the types and qualities of vegetable oils are judged by sensory evaluation based on their specific color and aroma. When dealing with adulterated vegetable oils, however, the method often produces uncertain results. At present, instrumental determination often entails a conventional heated esterification pretreatment, followed by an analysis which is time-consuming and has low yield. To ameliorate the problems, we applied a portable gas chromatography (GC) to directly analyze commercial camellia seed oils and other vegetable oils without the pretreatment. The experimental results showed that every vegetable oil has a unique fingerprint, which can be used to identify the oil constituents according to the retention time of its volatile components. If an oil sample was adulterated, then from its overlapped fingerprints, the constituent oils could be identified based on the chromatograph of the hybrid fingerprint patterns. Also, if optimal consumption time of a vegetable oil has expired by comparing the fingerprint with a standard graph. This study was the first report of applying a portable GC in situ, to compare with the traditional esterification analysis, and the application has been proven to be simple, rapid and convenient for detecting camellia seed oil, vegetable oils and other edible oils. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。