New method for preparing pine nut oil by squeezing raw material of pine nut

Abstract

This invention relates to a method for extracting pine seed oil from pine seeds without the need for solvent or complex apparatus. The method largely reduces the extraction cost, and does not use solvent, thus can maintain the natural quality of pine seed oil. The method comprises: crushing the husks of pine seeds, taking out the kernels, mixing with screened and cleaned rice hulls, wheat hulls or segments of rice straws and wheat straws at a volume ratio of (70 plus and minus 30) :(20 plus and minus 19), adding into an oil mill, extracting to obtain pine seed oil, and naturally precipitating at 10-50 deg.C for 1-15 days to separate oil and residues. The obtained pine seed oil is yellow, clear and fragrant.

Description

technical field [0001] The invention relates to a new processing method for preparing pine nut oil for food, medicine or daily use by pressing oil in pine nuts. Background technique [0002] With the improvement of people's living standards, people's consumption concept tends to be natural, green and healthy. Therefore, people's demand for natural and healthy edible oil is increasing, and the requirements are getting higher and higher. Not only the intrinsic quality requirements of edible oil It is very high, and there are also requirements for the processing method of edible oil. More and more people tend to eat edible oil obtained by stupid pressing method (traditional pressing method). [0003] Pine nut oil, as a new type of healthy nut edible oil with health care function, is gradually being recognized by people. However, due to the high oil content of pine nuts and the fine and soft texture, it is difficult to obtain pine nut oil by traditional pressing methods. In th...

AI Technical Summary

Problems solved by technology

However, due to the high oil content of pine nuts and the fine and soft texture, it is difficult to obtain pine nut oil by traditional pressing methods

In the traditional pressing method, the pine nut kernels are directly added to the oil press for pressing, and the emulsion-like mixture formed due to the high oil content of the pine nut and the fine and soft texture will flow out of the oil press directly, and it is impossible to achieve oil and meal separation

Therefore, someone solves the problem that the texture of pine nuts is too soft by adding a certain proportion of pine nut shells to the pine nuts. However, due to the oily pine oil contained in the pine nut shells, it will bring heavy pine oil to the pressed pine nut oil. Taste, affect the edible quality of pine nut oil, not easy to be accepted by people

There are also some people who process pine nut oil through the water substitution method, but the production of pine nut oil by the water substitution method requires adding a large amount of water or egg white emulsion to the pine nut puree. After oiling, the water contained in the oil must be further removed, and equipment such as electric mills and agitators must be used, and the oil yield of the water substitution method is low, and about 30% of the oil in the meal cannot be squeezed out.

Some people also use solvent extraction to extract pine nut oil, but solvent extraction is only suitable for mass production, and this method uses organic solvents that are harmful to human body, so the quality of oil extracted by solvent extraction is not as good as that of pressing