Pumpkin seed oil supercritical extraction process

Abstract

The present invention provides a pumpkin seed oil supercritical extraction process, wherein supercritical CO2 extraction and ultramicro filtration are performed to obtain the pumpkin seed oil. According to the present invention, no chemical reagent is added in the production process, especially in the pumpkin seed oil refining process, the pure physical method is used to refine, and the obtained pumpkin seed oil retains the specific flavonoids, plant sterols, vitamin E and other active substances of the pumpkin seed, and further has characteristics of no solvent residue, no pollution, good safety and high oil product quality; no chemical reagent is added during the refining process, such that no chemical residue reagent exists, and the obtained product can be adopted as the excellent high-end edible oil and cosmetics, or pharmaceutical additives; and the product has characteristics of thick aroma and unique flavor, can be widely suitable for cooking various foods and dishes, has effects of high nutritional value, health preserving, and high anti-oxidation active ingredient ensuring, and is particularly suitable for being promoted in the technical field of small batch special oil production.

Description

technical field [0001] The invention relates to a method for supercritical extraction of pumpkin seed oil, and belongs to the technical field: biology and new medical technology, modern agricultural technology, intensive processing of agricultural products and modern storage and transportation: value-added processing of agricultural and forestry products and special resources. Background technique [0002] Pumpkin seed oil is an edible vegetable oil with high nutritional value rich in physiologically active ingredients. Pumpkin seed oil contains about 86% unsaturated fatty acids, 56% of which are linoleic acid, which has the effect of regulating fat and lowering fat, and is beneficial to improve the health of cardiovascular and cerebrovascular patients; pumpkin seed oil is rich in vitamin E and fertility three Enol, of which vitamin E content reaches 0.16-0.27%, which is higher than that of other plants [0003] Plant oil is a kind of natural antioxidant, which has a ce...

AI Technical Summary

Problems solved by technology

[0005] (1) In the pretreatment production, the raw embryos are steamed and fried at high temperature. The time is long and the temperature is high, which not only has a negative impact on the quality of crude oil, but also increases energy consumption such as electricity consumption and steam consumption.

[0006] (2) The temperature in the process of pressing and extracting oil is too high, which not only results in deep color of pumpkin seed crude oil and high content of colloidal impurities, but also makes subsequent refining difficult and the refining yield is low. At the same time, the protein in the pre-pressed cake is severely denatured and destroyed, and feed Reduced by value

[0008] (4) In oil refining production, only pay attention to product quality indicators, especially sensory indicators, and do not pay attention to the influence of refining process on the nutrients in pumpkin seed oil. Conventional high-temperature concentrated alkali refining is used for deacidification, and high-temperature large adsorbent dosage Decolorization, high temperature and long-term distillation deodorization, etc., not only reduce the refining yield of pumpkin seed oil, but also cause a large loss of phytosterols and vitamin E in pumpkin seed oil, and even cause a large amount of harmful components in pumpkin seed oil to react due to excessive processing. Formula fatty acids greatly reduce the nutritional value of pumpkin seed oil and reduce product quality