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題 名 | 魷魚乾中膽固醇氧化產物之分析=Analysis of Cholesterol Oxidation Products in Dried Squid |
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作 者 | 高雅敏; 孫璐西; | 書刊名 | 食品科學 |
卷 期 | 24:2 1997.04[民86.04] |
頁 次 | 頁242-257 |
分類號 | 346.77 |
關鍵詞 | 膽固醇; 膽固醇氧化產物; 魷魚乾; Cholesterol; Cholesterol oxidation products; Dried squid; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以毛細管柱氣相層析法建立魷魚乾中八種膽固醇氧化產物(cholesterol oxidation products; COPs), 包括 7 α -hydroxycholesterol (7 α -OH)、 7 β - hydroxycholesterol (7 β -OH)、 7-ketocholesterol (7-Keto)、 cholestan-5 α,6 α -epoxy-3 β -ol (α -EP)、 cholestan-5 β, 6 β -epoxy-3 β -ol( β -EP)、 cholestan-3 β,5 α,6 β -triol (Triol)、20 α -hydroxycholesterol (20 α -OH) 及 25-hydroxycholesterol (25-OH) 等之測定方法,其流程大致為先萃油,經 Sep-pak 矽 膠處理匣淨化、室溫皂化及衍生化後, 以 GC 定量分析,於回收試驗中除β -EP 及 20 α -OH 之平均回收率較低外,其餘六種 COPs 均可達 80 %以上,且變異係數皆小於 10 %。 魷魚乾於 200 ℃烘烤,其膽固醇隨烘烤時間增長有顯著性減少, 而其 COPs 總生成量則有 顯著性增加之趨勢,由烘烤前之 12.07ppm,經 10 分鐘烘烤後,增加至 43.46 ppm。 |
英文摘要 | A capillary gas chromatographic (GC) method was developed for the guantitation of eight major cholesterol oxidation products (COPs) in dried squid, including 7 α -hydroxycholesterol (7 α -OH), 7 β -hydroxycholesterol (7 β -OH), 7-ketocholesterol (7-Keto), cholestan-5 α,6 α -epoxy-3 β -ol (α -EP), cholestan-5 β, 6 β -epoxy-3 β -ol( β -EP), cholestan-3 β, 5 α, 6 β -triol (Triol)、 20 α -hydroxycholesterol (20 α -OH) and 25-hydroxycholesterol (25-OH). The method involved the separation of total lipid extracted from dried squid by Sep-Pak silica cartridge to obtain the COPs fraction and the subsequent saponification and derivatization prior to separation by GC with capillary column (Rtx-1). Except for β -EP and 20 α -OH which had lower recoveries, the recoveries of the other COPs were above 80% and the coefficients of variation were less than 10%. During baking of dried squid at 200 ℃, the cholesterol content decreased from 730 mg/100 g to 602 mg/100g, while the total amount of COPs increased appreciably from 12.07 ppm to 43.46 ppm after baking for 10 minutes. |
本系統中英文摘要資訊取自各篇刊載內容。