Method for producing walnut oil

Abstract

The invention discloses a process method for producing walnut oil by using walnut powder as a raw material. The method comprises the steps of sequentially cleaning, leaching, squeezing, filtering, degumming, deacidifying, washing and deodorizing the walnut powder raw material to prepare the finished product walnut oil. According to the method, the leaching process is performed before the squeezing process, so that high oil content, few crude fibers and other disadvantageous factors including difficulty in directly squeezing of the walnut powder can be avoided; a butane leaching method under an undercritical condition is adopted in the leaching step, so that desolvation is easy, and few product nutritional ingredients are lost. The method is simple in process and convenient to operate, and the produced walnut oil product completely accords with the index of high-grade oil specification in national standard, and the product quality of the walnut oil is guaranteed.

Description

technical field [0001] The invention relates to a method for producing edible oil, in particular to a method for producing walnut oil by using walnut powder as raw material. Background technique [0002] At present, with the improvement of people's living standards, the demand for small varieties of oils and fats is increasing day by day. Although small varieties of oils contain special nutritional products, the raw materials are all by-products of other products. It is well known that eating walnuts is good for the human brain, and walnut oil is favored by most people. Because the price of walnut kernels is too high, the production raw material of walnut oil mainly adopts the by-products after processing walnut kernels, that is, walnut powder after sorting walnut kernels as raw material. [0003] At present, the production of walnut oil mainly adopts two extraction processes: pressing method and leaching method. The oil content of walnut powder is between 40% and 60%, and...

AI Technical Summary

Problems solved by technology

The pressed cake is leached and extracted with No. 6 solvent oil, but this process equals to adding raw materials to production, and also increases production costs

However, the production conditions of No. 6 solvent oil are all high in temperature, which will easily cause the loss of nutrients in walnut oil products.

Because the oil content of the raw material is too high, it cannot be crushed directly. If it is directly extracted, there will inevitably be a large amount of residual oil in the meal, which will increase the production cost.