Low-temperature camellia seed oil cold-pressing process

Abstract

The invention relates to a low-temperature camellia seed oil cold-pressing process. The process comprises the main steps: warehousing and checking camellia seeds, cleaning and removing impurities, drying and controlling moisture, vibrating and discharging, warming the seeds and shelling, buffering and temporarily storing, pressing, settling and filtering. The process is characterized in that 1, the moisture is controlled, and the steps of flat-plate drying, storage bin ventilating, steam hot-blast stove moisture drying and cooling and storing are combined; 2, seed warming and shelling are carried out; 3, buffering and temporary storing are carried out, the seeds drop from the storage tank by vibrating during pressing; and 4,pre-pressing and pre-squeezing are carried out. The process is high in mechanical automation degree, the camellia seeds in different moisture contents can be dried and subjected to quality guarantee, and packaging and pouring after drying are not required when the seeds are stored for a long time after drying or are continuously squeezed after drying. Meanwhile, the problem that the kernel rate in the shells is extremely high after shelling is solved, the quality in the total process is well controlled, the process is simple and convenient to operate, and the oil extraction rate and the camellia seed oil quality are improved. The manual packaging and discharging cost is saved by 40 RMB for each ton of camellia seeds. The yield of the camellia seed oil in a two-screw unit is increased from the original 15 tons per day to over 30 tons per day, and the residual oil is reduced from the original 10-12 percent to 7-9 percent.

Description

technical field [0001] The invention relates to a process for low-temperature cold pressing of Camellia oleifera seed oil. Background technique [0002] Camellia oleifera seed oil is a high-grade edible oil processed from the seeds of Camellia oleifera, a plant of the family Camellia oleifera. Due to the traditional hot pressing process of camellia oleifera seeds, the kernel shells are steamed and fried at high temperature and high moisture, so that the pressed oil contains a large amount of low molecular aldehydes and ketone compounds, thermal polymer compounds, carcinogens benzo(a)pyrene, pigments, and the peeled and tempered camellia seeds Compared with double-screw low-temperature cold pressing, the quality of pressed crude oil is poor. In recent years, the processing of camellia oleifera seed oil has developed rapidly, and the low-temperature cold pressing technology has become increasingly mature. However, the pretreatment technology and equipment of camellia oleifer...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a low-temperature cold-pressing process of Camellia oleifera seed oil, which solves the processing problem of a large number of high-moisture camellia seeds, and solves the impact of unbalanced flow on the shelling effect, the stability of the temperature of the press, the moisture of the press and the amount of feed. problems, improve the quality and yield of cold-pressed crude oil

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