Production method of mellow rapeseed oil on basis of wood pressing device

Abstract

A production method of mellow rapeseed oil on the basis of a wood pressing device comprises the following specific steps: a, rapeseeds are cleaned through screening, air separation and proportional stone removal; b, the seed stir-frying temperature is controlled at 100-105 DEG C, the seed stir-frying time is determined on the basis of the seed grain wetness degree, the seed stir-frying time for each pot is selected from the range of 40-50 min, and the well stir-fried seeds are ground to serve as a standby steaming blank; c, steamed seed powder is instantly poured into a tension band where sterilized glutinous rice straw is spread in advance and then is beaten with a wooden hammer to be solid into a cake; d, raw materials forming the cake in the tension band are fed into the wood pressing device timely, and a wooden wedge is added in time and tightly propped in a groove of the wood pressing device; the wooden wedge is impacted, and oil in the rapeseed cake is extruded out; the mellow rapeseed oil is obtained with a conventional processing procedure of the rapeseed oil. Infrared electromagnetic temperature-controlled seed stir-frying is performed, the mature degree of the rapeseeds is uniform and consistent, and the oil is mellow; the oil is light in color, gold, transparent and high in quality; the quality is stable and the safety is high; the aroma is unique, and the oil is strongly mellow.

Description

technical field [0001] The invention relates to a production method of wood-pressed coriander seed oil. Background technique [0002] The fatty acid composition of rapeseed oil also has certain changes due to the influence of the place of origin, soil, climate and variety. Generally, the content of erucic acid is low in cold zone areas, and the content of linoleic acid is relatively high. Luoping County, Yunnan Province has a mild climate, warm and humid summers, and continuous rainy winters. It is a uniquely favorable environment for growing rapeseed. The quality of raw materials is high, and the content of unsaturated fatty acids is high. It is a good raw material for processing mellow rapeseed oil. The traditional small press frying equipment uses coal to heat the fried seeds. The temperature of the charcoal fire cannot be controlled. The temperature of the fried seeds is generally between 140-160°C. Insert raw seeds, so that the pressed oil has a burnt or lettuce taste,...

AI Technical Summary

Problems solved by technology

The traditional small press frying equipment uses coal to heat the fried seeds. The temperature of the charcoal fire cannot be controlled. The temperature of the fried seeds is generally between 140-160°C. Insert raw seeds, so that the pressed oil has a burnt or lettuce taste, the pressed crude oil has a deep color, the finished oil has poor transparency, and the oil has an impure aroma; during the frying process, due to the high temperature and the contact with soot Seeds are prone to produce carcinogen benzo(a)pyrene, which poses hidden dangers to food safety