Method for producing pomegranate seed oil

Abstract

The invention relates to a method for producing pomegranate seed oil. The method comprises the following process steps of (1) roasting preprocessed clean pomegranate seeds at the temperature of 200-220 DEG C in a roaster for 3-5 minutes till the pomegranate seeds send out thick sesame fragrance; (2) breaking hulls to take kernels, and pulverizing the roasted pomegranate seeds by a pulverizer, wherein the pulverizer is adjusted to ensure that the particle size of the pulverized seeds is 2mm-3mm; (3) as the kernels and the broken hulls are mixed together after pulverizing, winnowing with saturated salt water to remove the broken hulls, and airing or drying the obtained kernels, wherein the water content of the kernels is 5-8 percent, and the rate of the obtained kernels is 38-42 percent; (4) squeezing the dried kernels in a squeezer, wherein the temperature is controlled within 40-80 DEG C; and (5) processing squeezed crude oil by a centrifugal oil filter, and removing impurities to obtain the finished refined oil product. The producing method has the advantages of simple and easily available production equipment, cleanness, environmental protection, high oil extraction rate and the like. The pomegranate seed oil has thick sesame fragrance, does not contain an organic solvent, and retains original healthy nutrient content.

Description

technical field [0001] The invention relates to a production method of vegetable oil, in particular to a production method of pomegranate seed oil. Background technique [0002] The oil content of pomegranate seeds is 15%-20%. The unsaturated fatty acid content of pomegranate seed oil is extremely high, and the content of conjugated trienoic acid exceeds 80%. Therefore, it has a strong antioxidant capacity and can eliminate free Long-term consumption can help prevent the occurrence of cardiovascular and cerebrovascular diseases, improve joint elasticity and skin elasticity, and also have an auxiliary therapeutic effect on retinal inflammation caused by diabetes. Because pomegranate seeds are small in size and have a hard shell, this shell is actually a layer of inner seed coat of pomegranate seeds, which is closely combined with the inner seed kernel (seed embryo), so it is very difficult to remove the "seed shell" and take out the seed kernel. Difficulty, so, known from pu...

AI Technical Summary

Problems solved by technology

The patent shows that although the oil is centrifugally deoiled after pressing, the final oil yield is only 7% to 11%, and the oil squeezed out of the patent has to wait for a long time (2 to 5 days) to stand still before being filtered; the second is high temperature Pressing, the oil yield is about 9% to 13%. Although the oil yield has increased, some components of pomegranate seed oil are damaged, which reduces the health value; the third is organic solvent extraction, and the oil yield can reach 19%. (Study on the ultrasonic extraction process of pomegranate seed oil, Chinese Journal of Cereals and Oils, 2009, 24 (4): 82-86), but there are suspicions of chemical residues, which are not accepted by consumers; the fourth is supercritical CO 2 Extraction, the extraction rate is as high as 20%, and there is no chemical pollution, but the equipment investment is large, the extraction cost is high, and it is difficult to achieve large-scale production

Therefore, the development and utilization of pomegranate seed resources have been limited, and pomegranate seeds have become waste for a long time