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Preparation method of cold-pressed rapeseed oil rich in antioxidants

An antioxidant and mustard seed technology, which is applied in the production of fat/fat, fat production, food processing, etc., can solve the problems of not being widely used and the influence of water content is relatively large, and achieve the effect of increasing the content and promoting the decarboxylation reaction.

Active Publication Date: 2021-07-13
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing cold-pressed rapeseed oil production process, drum heating, microwave heating and infrared heating can all be applied to fried seeds. The center temperature of the microwave-treated rapeseed can reach 230-270°C. The content of Canolol is the highest, but it has not been widely used for the time being because microwave heating is greatly affected by the moisture content

Method used

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  • Preparation method of cold-pressed rapeseed oil rich in antioxidants
  • Preparation method of cold-pressed rapeseed oil rich in antioxidants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Put 10kg of rapeseeds with complete grains and cleaned impurities into cloth bags, and then treat them with high-temperature steam at 101°C for 15 minutes. Heat the fried seeds under a medium-wave infrared lamp, the infrared power is 1kW, the distance between the rapeseed and the infrared lamp is 50mm, the thickness of the rapeseed is 5mm, the air flow rate is 15L / h, the temperature of the irradiated fried seeds is 160°C, and the time is 10min. After frying, the seeds are cooled to 25°C and pressed, wherein the pressing pressure is 30 MPa, and the pressing time is 20 minutes. After pressing, the total impurities are less than 0.4% and the cold-pressed rapeseed oil is obtained.

Embodiment 2

[0033] Put 10kg of rapeseeds with complete grains and cleaned impurities into a cloth bag, and then treat them with high-temperature steam at 121°C for 15 minutes. Heating and frying seeds under a medium-wave infrared lamp, the infrared power is 1.5kW, the distance between rapeseed and infrared lamp is 50mm, the thickness of rapeseed is 5mm, the air flow rate is 20L / h, the temperature of irradiated frying seeds is 160℃, and the time is 10min . After frying the seeds, cool to 30°C and press with a pressing pressure of 30 MPa for 30 minutes. After pressing, the total impurities are less than 0.4% after standing still to remove impurities, and cold-pressed rapeseed oil is obtained.

Embodiment 3

[0035] Put 10kg of rapeseeds with complete grains and cleaned impurities into a cloth bag, and then treat them with high-temperature steam at 141°C for 15 minutes. Heating and frying seeds under a medium-wave infrared lamp, the infrared power is 1.5kW, the distance between rapeseed and infrared lamp is 150mm, the thickness of rapeseed is 5mm, the air flow rate is 20L / h, the temperature of irradiated frying seeds is 200℃, and the time is 10min . After the fried seeds are cooled to 35°C, they are pressed with a pressure of 30 MPa and a time of 20 minutes. After pressing, the total impurities are less than 0.4% and the cold-pressed rapeseed oil is obtained.

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Abstract

The invention discloses a preparation method of cold-pressed rapeseed oil rich in antioxidants, which belongs to the field of grain and oil processing. The method comprises the following steps of performing high-temperature steam treatment on rapeseeds, ventilating and drying, performing infrared heating seed frying, cooling to room temperature after seed frying, and squeezing to obtain the cold-pressed rapeseed oil. The permeation effect of high-temperature steam is fully exerted, the fluidity of the antioxidant is improved, and the generation of sinapic acid derivatives is promoted. The oxidation completion time of the obtained rapeseed oil reaches 13.26 h, the content of tocopherol reaches 1033.70 mg / kg, and the content of Canolol reaches 2124.40 mg / kg. The process is simple and safe to operate, green and environment-friendly, the antioxidant increasing effect of the rapeseed oil is obvious, and the oxidation stability of the obtained rapeseed oil is good.

Description

technical field [0001] The invention relates to a method for preparing cold-pressed rapeseed oil rich in antioxidants, belongs to the field of grain and oil processing, and in particular relates to deep processing of rapeseed. Background technique [0002] Rapeseed is one of the main oil crops in my country. Its oil is rich in unsaturated fatty acids such as oleic acid, linoleic acid, and linolenic acid, and the proportion of unsaturated fatty acids is appropriate, which is conducive to human body absorption. In addition, rapeseed oil contains a large number of natural active ingredients, such as tocopherol, sinapic acid, sterols, etc., and these active ingredients further improve the nutritional value of rapeseed oil. [0003] Antioxidants play an important role in the shelf life of rapeseed oil, in addition to tocopherol, a new polyphenol 2,6-dimethoxy-4 ethylene phenol (Canolol) was detected in rapeseed oil after pressing out. Canolol is -CH at the para-terminus of sina...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/06
CPCC11B1/04C11B1/06Y02P60/85
Inventor 李进伟于杰刘元法范柳萍
Owner JIANGNAN UNIV