Method and device for extracting pepper seed oil from pepper seeds

Abstract

The invention relates to a method for extracting oil from oil plants, in particular to a method for extracting pepper seed oil from pepper seeds. A method for extracting Zanthoxylum bungeanum oil from Zanthoxylum bungeanum, the main features of which include the following steps: (1) first drying the Zanthoxylum bungeanum seeds until the water content is less than 13%, and pulverizing them to 40-80 meshes by a pulverizer; (2) drying Put the pulverized Zanthoxylum bungeanum seeds into the extraction kettle, vacuum down to below 1×104pa, and discharge the air in the extraction kettle; (3) Then use a plunger pump to inject tetrafluoroethane solution into the extraction kettle, and observe the liquid through the sight glass. (4) start stirring and start extraction, the extraction pressure range is 1.0-1.2Mpa, the temperature range is 40-50°C, each extraction time is 30-45min, a total of 3 extractions; (5) then Evaporation separation is carried out in the separation tank under reduced pressure and temperature rise. The separation pressure range is 0.5-0.1Mpa, the temperature range is 40-50°C, and the separation time is 15-25min; (6) After subcritical extraction, the crude oil is centrifuged in a high-speed centrifuge Separate and filter to obtain the final pepper seed oil.

Description

Technical field: [0001] The invention relates to a method for extracting oil from oil plants, in particular to a method for extracting pepper seed oil from pepper seeds. Background technique: [0002] Pepper (Zanthexylum bungeanum Maxin) is a rue spice plant, which has a long history of cultivation and is widely planted in China. Zanthoxylum bungeanum fruit is generally shelled and eaten as seasoning, and Zanthoxylum bungeanum seed is the main by-product in Zanthoxylum bungeanum production, and its output accounts for more than 50% of Zanthoxylum bungeanum fruit. Zanthoxylum bungeanum contains more than 25% oil, and Zanthoxylum bungeanum oil is rich in unsaturated fatty acids, including 25-32% oleic acid, 18-33% linoleic acid, and 17-24% linolenic acid. More than 80%, it is an excellent health care nutritional oil. It is reported that pepper seed oil has been used in food, medicine and industrial fields. my country is the world's largest producer of peppercorns. Pepper se...

AI Technical Summary

Problems solved by technology

The physical method is commonly used to extract by pressing. The pressing method uses mechanical force to squeeze the embryo to produce oil. The process route is simple, and the product is easily polluted during the production process. It contains many impurities, microorganisms and heavy metals are easy to exceed the standard, and the oil yield is low. The amount of residual oil in oil residue is high; chemical methods usually use organic solvents to extract oil, and the commonly used organic solvents are ether, petroleum ether, n-hexane, etc., because the solvents are flammable and explosive, the production safety is poor, and the product has solvent residues, which affects its quality and quality, which also affects its application, both methods have obvious disadvantages

Supercritical CO 2 Due to the high cost of equipment design and manufacturing and operating costs for extracting vegetable oils, only 3000L supercritical extraction equipment can be produced in China at present. The amount of raw materials to be processed is limited and the production cost is high. It is mainly used to extract some high value-added products, such as pepper seeds. The production cost of products with low added value is too high, so it is not suitable for the production of bulk raw materials such as pepper seeds in industrial production

Images