Edible vegetable oils quality monitoring:
The quality of edible oil directly affects people's health and quality of life.Frequently occurred in recent years of cooking oil, oil pigwash, metamorphic grease and oil security event has caused the social from all walks of life and all levels of government attaches great importance to.The quality safety of edible vegetable oils mainly comes from two aspects, the first is the cooking oil, pigwash oil, industrial oil, frying oil used to the food processing industry, the second is edible palm oil storage (http://www.palmmill.com/News/20.html)and use process produce bad fats.In this paper, through a large number of edible vegetable oils (rapeseed oil, corn oil, soybean oil, sesame oil), food and beverage waste oil samples (hot pot, Chinese food oil), the grease in the acid value, peroxide value, conductivity, total polar material, trans fat, cholesterol, freezing test, the best measuring method and oxidation stability index of the optimum operating conditions, the monitoring to the quality of edible vegetable oils provide more rapid and accurate detection method.The main research contents and results were as follows:
1, the comparison of the light and dark two hidden storage conditions on the different types, different process, different grade edible plant oleic acid value, peroxide value.The palm oil plant (http://www.palmmill.com)show that the edible vegetable oil light after five months in a row, acid value, peroxide value reached 3.98 mg/g (KOH), tendency for 126.70 / kg, and food and beverage waste oil reached 7.80 mg/g (KOH), the tendency for 254.10 / kg, severely exceeded the national limited standard of acid value, peroxide value.
2, the effective standard methods were compared and total polar material TESTO - 0265 meter two methods for the determination of total polar material in edible vegetable oils.Results show that the TESTO - 0265 instrument method and national standard method for determination of...