Extra virgin camellia oil and preparation method thereof

Abstract

The invention discloses super virgin camellia oil and a preparation method thereof. The preparation method comprises the following process steps: naturally air-curing or air-drying and unshelling camellia seeds to obtain camellia seed kernels; pressing first camellia seed juice by using a cold press, wherein the feeding temperature of the camellia seed kernels is the environment temperature; controlling the barrel temperature and the expressed oil temperature to be lower than 60 DEG C to obtain a virgin camellia oil crude product; performing programmed cooling and freezing, grain growth, impurity removal and filtration to obtain the super virgin camellia oil. According to the method, a chemical reagent or a chemical aid is not added, the obtained camellia oil is pure in flavor, tastes fresh and cool, does not contain harmful ingredients such as metal, pesticide residue and benzopyrene, and does not contain trans-fat acid; the color, the flavor and the taste are perfect; original active nutritional ingredients of the camellia oil are better maintained; the quality is superior to the first-grade national standard.

Description

technical field [0001] The invention relates to a woody vegetable oil and a preparation method thereof, in particular to a camellia oil and a preparation method thereof, in particular to an extra virgin camellia oil and a preparation method thereof. Background technique [0002] Camellia oleifera is a unique oil resource in my country. Due to the lack of resources in foreign countries, there is very little processing and development. At present, the processing of camellia oleifera in our country is still "rough and primitive", and the traditional processing method is mostly used now. The scale is small and the technology is backward. When the camellia oleifera seeds are processed at high temperature for a long time, not only the yield of oil is low, but the quality of oil is poor. The color is deep, and the processing energy consumption is high, the cost is high, and it will also lead to the destruction of the structure of by-products in camellia oleifera seeds such as tea s...

AI Technical Summary

Problems solved by technology

[0012] Chinese patent 200910307817.2 aims at problems such as excessive loss of camellia oil nutrients due to excessive temperature in the prior art, and provides a method for refining camellia oil with high nutrient content. The main steps include: preparing crude oil at normal temperature; adding warm water, and then using Remove impurities and water in the lower layer by sedimentation separation; add sodium hydroxide solution, and then remove water and soapstock by sedimentation separation; heat tea seed crude oil to 80°C-90°C, add 1-3 parts of activated clay, at -0.1MPa At ~-0.095MPa, after 15-20 minutes, cool to 68°C-72°C, and then filter with cotton cloth; at a temperature of 140-150°C, a vacuum of 200Pa to 260Pa, after distillation, deodorized camellia oil is obtained; deodorized camellia oil is slowly cooled Static pressure filtration to obtain refined camellia oil

[0013] Said patent discloses these basic technological methods of cold-pressing camellia oil at present, but the process is complicated, the technological conditions are high, and a variety of chemical reagents or auxiliary agents are required. It is easy to have problems in safety, taste, flavor, nutrition and health, etc.

[0014] The low-temperature crystallization purification process often used in existing methods is also mostly too simple. Although it can basically achieve the purpose of removing high-melting point saturated fat and solve the problem of solidification or precipitation during low-temperature storage, the control of the cooling process is not specific enough. Crystallization The time is very long, resulting in low production efficiency and high energy consumption, and there is no disclosure of the crystallization of high melting point saturated fat, and the adsorption of harmful substances in the oil such as wax, benzopyrene, heavy metals, pesticide residues, etc. during the crystallization process remove effect problem

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