title: [Three-Iindex-Value Method for Rapid Screening Unqualified Vegetable Oil].
abstract: In the present study, by measuring the A3 005 (representing unsaturation), A985 (representing conjugated fatty acids), A960 + A985 (representing trans-fatty acid ) of southern common vegetable oils (peanut oil, corn oil, canola oil, soybean oil, sunflower oil, tea seed oil and olive oil), "waste oil" and overdue vegetable oils, the pass-setting-range of these three index values for the vegetable oils was obtained. On this basis, a method for rapid screening unqualified vegetable oil (expired, adding low-cost oil, adding "waste oil") was established. The method effectively improved the monitoring efficiency of vegetable oil. With this method of screening a number of suspected substandard oils were proved unqualified by determination of fatty acid composition and 11, 12, 13, 17 fatty acid content. Through the combination of several detection methods, the causes for disqualification of vegetable oils can be further inferred.
authors.forename: Wen-xuan
authors.initials: WX
authors.lastname: He
authors.forename: Gui-shui
authors.initials: GS
authors.lastname: Hong
authors.forename: Run
authors.initials: R
authors.lastname: Fang
authors.forename: Xian-chun
authors.initials: XC
authors.lastname: Cai
authors.forename: Sheng
authors.initials: S
authors.lastname: Huang
mesh_terms: D003314:Corn Oil; D005227:Fatty Acids / Q000032:analysis*; D005229:Fatty Acids, Monounsaturated; D000069463:Olive Oil; D000074241:Peanut Oil; D010938:Plant Oils / Q000032:analysis*; D000074262:Rapeseed Oil; D013024:Soybean Oil; D000074242:Sunflower Oil; D020947:Tea Tree Oil
chemical_list: D005227:Fatty Acids; D005229:Fatty Acids, Monounsaturated; D000069463:Olive Oil; D000074241:Peanut Oil; D010938:Plant Oils; D000074262:Rapeseed Oil; D000074242:Sunflower Oil; D020947:Tea Tree Oil; D013024:Soybean Oil; D003314:Corn Oil