Method for manufacturing oil by using tea oil residues

Abstract

The invention discloses a method for manufacturing oil by using tea oil residues. The method includes the following steps: step 1, raw material preparation: preparing raw materials according to the following proportion, by mass, 45-65 parts of tea oil residues, 30-40 parts of tea cakes and 5-15 parts of tea oil husks, step 2, crushing and stirring: crushing the obtained tea cakes and tea oil husks, and then, mixing and evenly stirring the crushed tea cakes and tea oil husks with the tea oil residues to obtain a compound raw material, step 3, water supplement: evenly stirring the evenly-stirred compound raw material through water supplement, enabling the water content of the compound raw material to be 7-10% by mass, and obtaining a semi-finished product, and step 4, squeezing: placing the semi-finished product into an oil press to squeeze the semi-finished product to obtain camellia oleosa seed oil. The method is high in oil yield and simple in process, auxiliary materials are cheap and easy to obtain, and the obtained tea cakes can be reused as fodder and the like.

Description

technical field [0001] The invention relates to a method for processing oil residues (that is, camellia oil residues) after pressing camellia seeds, in particular to a method for oil extraction by using camellia oil residues. Background technique [0002] Camellia oleifera is the world's four major woody oil plants. The unsaturated fatty acid content of camellia oil is as high as 90%, which is much higher than that of olive oil, peanut oil and soybean oil. It is a high-grade vegetable oil comparable to olive oil. Camellia oleifera is a unique oil crop in my country, and the development of camellia oleifera industry plays an extremely important role in the safety of edible oil in my country and people's health. At present, my country's Camellia oleifera cultivation area is 55 million mu, with an annual output of 180,000 to 200,000 tons of camellia oil, which is equivalent to 1% to 1.8% of my country's total edible oil consumption. Small oilseeds, in terms of total output, ca...

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Problems solved by technology

[0007]3. Mix the camellia oil residue into the camellia seed kernel and squeeze, so as to squeeze out the camellia seed oil in the camellia oil residue while pressing the camellia seed kernel , but because the particles of camellia oleifera seeds are relatively smooth, it is difficult for the oil residue to mix evenly with the camellia oleifera seeds or adhere to the surface of the tea kernels, resulting in unstable pressure of the extrusion system inside the press, with large changes, which seriously affects the oil content of the tea cake (that is, tea The oil content of the cake increases to more than 10% by mass), and the camellia oil residue will adhere to the conveying system of the press machine, which is easy to agglomerate for a long time, breeds bacteria, and affects food safety

[0008] 4. Chinese patent CN102127486 B discloses a kind of camellia oil dregs hardened material and oil extraction method, although it can remove most of the camellia seeds in the camellia oil dregs The oil is pressed out, but the process operation is relatively complicated, the efficiency is low, and the energy consumption is high, and because the auxiliary material camellia seed shell is used in a large proportion, and the camellia seed shell can easily absorb the camellia seed oil, the oil output is still not ideal, and at the same time , a large proportion of camellia seed shells can easily lead to dark color and poor taste of the oil, and the freezing test (0°C, 5.5H) will easily form turbidity or fogging; in addition, the squeezed tea cake will contain a lot of camellia seeds The shell of camellia oleifera seed is extremely hard, which greatly reduces the use of tea cake. For example, if it is used as animal feed, it will easily cut the animal's stomach, or it is difficult to digest, which will affect the animal's eating

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