Method for preparing edible idesia oil

Abstract

The invention discloses a method for preparing idesia oil, which is characterized by comprising the following steps of: filtering crude idesia oil by a filtering cloth to remove mechanical impurities; adding 100 parts of the filtered crude idesia oil into 0.5 to 2.0 parts of degumming agents at 75 to 80 DEG C; stirring for 20 to 35 minutes; cooling and centrifuging to separate the colloid in the lower layer; washing the idesia oil in the upper layer by using deionized water to a neutral state to obtain degummed idesia oil; dehydrating the degummed idesia oil at a vacuum degree of 4000 to 5000 Pa and the temperature of 60 to 80 DEC C for 20 to 30 minutes; continuously deacidifying the dehydrated idesia oil at the temperature of 105 to 130 DEG C, the pressure of 10 to 20 Pa, the feed rate of 80 to 120 mL / h and the film scraper rotation speed of 150 to 200 r / min, wherein the light component is removed free fatty acid, and the heavy component is product oil. The method has the advantages that the colloid and the fatty acid are removed completely, the production period is short, the effective ingredients, such as vitamin E and the like in the grease are effectively remained; the prepared edible idesia oil has the advantages of high yield, high smoke point, stable property in a storage process, no precipitate, and invariant color; and a special deodorization technology is not needed.

Description

technical field [0001] The invention relates to a preparation method of edible jatropha oil, belonging to the technical field of edible oil processing. Background technique [0002] Idesia polycarpa Maxim.var.vestita Diels is a plant of the genus Idesia polycarpa Maxim.var.vestita Diels, a deciduous tree, distributed in the Yangtze River Basin of my country, especially in Sichuan, Shaanxi and other places where there are a large number of wild resources. The oil content of jacaranda is as high as 36-38%, the oil yield per plant is as high as 25-30kg, and the production period is as long as 40-50 years. Carapacea oil is rich in unsaturated fatty acids and has high nutritional value. Early research and the actual consumption process of local farmers in the producing area have also proved its safety. In addition, my country has a large population and little arable land, so the cultivation of jacaranda does not occupy arable land. Making full use of jacaranda resources is condu...

AI Technical Summary

Problems solved by technology

Due to the high acid value of oil, the amount of excess alkali added in the chemical alkali refining process is large, and the alkali also saponifies a large amount of neutral oil during the neutralization process with free fatty acids, resulting in a low refining yield; physical refining water vapor For deacidification, the oil needs to be treated at high temperature for a long time, which affects the quality of the oil. Some active ingredients in the oil, such as VE and sterol, will overflow with the steam stripping, reducing the nutritional value of health care