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Rapeseed peeling method suitable for cold pressing oil preparation

A rapeseed, cold pressing technology, applied in the direction of fat oil/fat production, fat production, etc., to improve the effect of crushing and peeling, increase the peeling rate, and brighten the color

Inactive Publication Date: 2015-01-21
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rapeseed dehulling oil production process has become a new trend in the rapeseed processing industry. There are many research reports on rapeseed dehulling and low-temperature oil extraction technology, but there are few reports specifically aimed at improving the rapeseed dehulling rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The rapeseed dehulling operation steps suitable for cold pressing oil production are as follows:

[0018] (1) Rapeseed pretreatment: adopt screening and winnowing combination method to remove the size impurities such as pods, leaves, silt and shriveled seeds in the raw materials to obtain pretreated rapeseed;

[0019] (2) Ultrasonic treatment: 1000 g of pretreated rapeseed was ultrasonicated for 5 min at a temperature of 50 °C, a frequency of 48 KHz, and a power of 240 W to obtain ultrasonic rapeseed;

[0020] (3) Drying: Dry the rapeseed in an ultrasonic plate dryer at a temperature of 95°C for 15 minutes, and the moisture content of the dried rapeseed is 6%;

[0021] (4) Crushing and peeling: adding the dried rapeseed to the rapeseed peeling machine for grinding, crushing and peeling to obtain crushed and peeled rapeseed;

[0022] (5) Separation of skins and kernels: Transfer the crushed and peeled rapeseeds to the winnowing machine and screening machine to separate ...

Embodiment 2

[0024] The rapeseed dehulling operation steps suitable for cold pressing oil production are as follows:

[0025] (1) Rapeseed pretreatment: adopt screening and winnowing combination method to remove the size impurities such as pods, leaves, silt and shriveled seeds in the raw materials to obtain pretreated rapeseed;

[0026] (2) Ultrasonic treatment: 1000 g of pretreated rapeseed was ultrasonicated for 10 min at a temperature of 55 °C, a frequency of 48 KHz, and a power of 270 W to obtain ultrasonic rapeseed;

[0027] (3) Drying: Dry the rapeseed in an ultrasonic plate dryer at a temperature of 95°C for 8 minutes, and control the moisture content of the dried rapeseed to 7%;

[0028] (4) Crushing and peeling: adding the dried rapeseed to the rapeseed peeling machine for grinding, crushing and peeling to obtain crushed and peeled rapeseed;

[0029] (5) Separation of skins and kernels: Transfer the crushed and peeled rapeseeds to the winnowing machine and screening machine to s...

Embodiment 3

[0031] (1) Rapeseed pretreatment: adopt screening and winnowing combination method to remove the size impurities such as pods, leaves, silt and shriveled seeds in the raw materials to obtain pretreated rapeseed;

[0032] (2) Ultrasonic treatment: 1000 g of pretreated rapeseed was ultrasonicated for 15 min at a temperature of 60 °C, a frequency of 48 KHz, and a power of 300 W to obtain ultrasonic rapeseed;

[0033] (3) Drying: Dry the rapeseed in an ultrasonic plate dryer at a temperature of 95°C for 5 minutes, and control the moisture content of the dried rapeseed to 8%;

[0034] (4) Crushing and peeling: adding the dried rapeseed to the rapeseed peeling machine for grinding, crushing and peeling to obtain crushed and peeled rapeseed;

[0035] (5) Separation of skins and kernels: The broken and peeled rapeseeds are successively transferred to the winnowing machine and screening machine to separate the rapeseed skins and rapeseed kernels to obtain peeled rapeseed kernels, with ...

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PUM

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Abstract

The invention provides a rapeseed peeling method suitable for cold pressing oil preparation, belonging to a front procedure in a rapeseed oil preparation method. The rapeseed peeling method comprises the following steps: (1) rapeseed pretreatment, (2) ultrasonic wave treatment, (3) drying, (4) breaking and peeling, and (5) skin and kernel separation. The method is simple and low in investment, the drying time is greatly shortened by the ultrasonic wave treatment, the rapeseed peeling rate is more than 95%, and the peeling rate is high. The peeled rapeseeds obtained by adopting the method is particularly suitable for processing of low-temperature pressed rapeseeds, and low-temperature pressed rapeseed oil is good in color and high in quality and meets the requirement of current customers for green and healthy oil.

Description

technical field [0001] The invention belongs to the technical field of food processing and production, in particular to a method for removing rapeseed husks. Background technique [0002] Rapeseed is one of the most important oil crops and economic crops in my country, and its annual planting area and total output both rank first in the world. About 50% of domestic vegetable oil comes from rapeseed. In the rapeseed oil production technology, the traditional oil production process mainly includes a direct pressing process, pre-pressing-extraction process and direct leaching process, while the modern oil production process mainly refers to the extraction process after extrusion pretreatment and low temperature cold pressing process. Among them, rapeseed dehulling and cold pressing oil production is a new processing technology developed in recent years. This technology can significantly improve the quality of oil and the utilization value of cake. Compared with hot pressing, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04
CPCC11B1/04
Inventor 吴学凤姜绍通罗水忠潘丽军郑志
Owner HEFEI UNIV OF TECH
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