Processing technology of triglyceride type Chinese prickly ash seed oil

Abstract

The invention provides a processing technology of triglyceride type Chinese prickly ash seed oil, which comprises the following steps: step 1, adding glycerol and a composite basic catalyst into crude Chinese prickly ash seed oil, the composite basic catalyst being a compound of zinc oxide and at least one of sodium hydroxide and potassium hydroxide; and 2, carrying out esterification reaction on the crude zanthoxylum bungeanum seed oil and glycerol under the action of a composite alkaline catalyst to obtain the triglyceride type zanthoxylum bungeanum seed oil. According to the method, the food-grade Chinese prickly ash seed oil obtained through subcritical extraction is subjected to transesterification by adopting the composite basic catalyst to generate the triglyceride type Chinese prickly ash seed oil, the raw material cost is low, the equipment investment is small, the method is suitable for large-scale production, and the deep processing cost of the high-acid-value Chinese prickly ash seed oil is greatly reduced; and the finally obtained product is rich in EPA, DHA and other important nutritional ingredients which cannot be synthesized and are indispensable by the human body, overcomes the defects that the proportion of long-chain fatty acids in the existing Chinese prickly ash seed oil is unbalanced and the Chinese prickly ash seed oil is poorly absorbed by the human body, and has very high edible nutritional value and medicinal value.

Description

technical field [0001] The invention belongs to the technical field of oil plant processing, in particular to a processing technology of triglyceride type prickly ash seed oil. Background technique [0002] Zanthoxylum bungeanum seed oil is rich in EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), no matter it is used as a raw material of medicine or health food, it has broad development and application prospects. Triglyceride-type Zanthoxylum bungeanum seed oil, as a new variety of triglyceride-type edible oil, has good nutritional and health value, and has been included in the new resource food catalog of the Ministry of Health. In the prior art, both the Zanthoxylum bungeanum seed oil obtained through the pressing process and the Zanthoxylum bungeanum seed oil obtained through the extraction process have a relatively high acid value (generally between 40-60), which cannot meet the edible standard. The processing cost is high, and the yield of refined oil is ver...

AI Technical Summary

Problems solved by technology

In the prior art, both the Zanthoxylum bungeanum seed oil obtained through the pressing process and the Zanthoxylum bungeanum seed oil obtained through the extraction process have a relatively high acid value (generally between 40-60), which cannot meet the edible standard. The processing cost is high, and the yield of refined oil is very low

The Chinese patent application No. 201310525232.4 discloses a catalyst for the esterification and acid reduction reaction of pepper seed oil with high acid value. The catalyst is used to convert the pepper seed oil with high acid value into biodiesel oil through esterification Raw materials, the resulting product has too many residues and cannot reach the edible level; Chinese patent application No. 200610105197.0 discloses a method for producing biodiesel from Zanthoxylum bungeanum seed oil, wherein the intermediate product esterifies the chemical in Zanthoxylum bungeanum seed oil There are also a lot of residues, and it does not meet the food standard