Paddy rice dewaxing method

Abstract

The invention discloses a paddy rice dewaxing method, which belongs to the technical field of the edible oil processing. The paddy rice dewaxing method is realized by the following steps: inputting degummed, decolorized and deacidified high-temperature paddy rice oil into a grain growing and forming pot; starting a cooling device and a stirring device; when the temperature of the high-temperature paddy rice oil is lowered to 38-40DEG C, controlling the cooling speed to be 2DEG C / h; when the temperature is lowered to 29-31DEG C, controlling the cooling speed to be 1DEG C / h; stopping cooling and stirring until the temperature is lowered to 18-20DEG C; starting to grow the crystal; crystalizing and precipitating wax components in the paddy rice oil out to become crystal particles; growing crystal for more than 24 hours; and filtering the wax crystal particles in the paddy rice oil out. With the paddy rice dewaxing method disclosed by the invention, the paddy rice oil is cooled to precipitate wax crystals by reasonably controlling the temperature reduction process of the paddy rice oil, and the effect on separating the oil and the wax is achieved by filtering.

Description

technical field [0001] The invention belongs to the technical field of edible oil processing, in particular to a method for dewaxing rice oil. Background technique [0002] About 800 million people in my country take rice as a staple food, and China is the largest rice producer and consumer in the world. In the past 10 years, the average annual rice output has been 180 million to 200 million tons, accounting for 1 / 3 of the world's total rice output and about 2 / 5 of my country's total grain output. Every year, my country consumes 130 million to 140 million tons of rice for direct consumption or consumption of its products, which makes the consumption of rice and its products the largest and most stable food consumption variety in my country. [0003] Rice oil is also called rice bran oil. Rice bran refers to the rice skin and germ of rice, which is not conducive to chewing and affects the taste. Therefore, it needs to be peeled off from the rice. Generally speaking, the bran...

AI Technical Summary

Problems solved by technology

The wax content of crude rice oil is very high, between 1% and 5%. During the oil making process, the wax is difficult to remove, which affects the transparency and taste of the refined rice oil

At present, the commonly used dewaxing is carried out after decolorization or deodorization. Due to the high viscosity of the oil, it is difficult to remove the wax, which makes it difficult for the finished rice oil to meet the standard of first-grade oil, and the refining consumption will also be high.