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Novel process for preparing vegetable oil with steam explosion-aqueous solvent method

A water-based method and vegetable oil technology, which is applied in food science, edible oil/fat, fat oil/fat production, etc., can solve the problems of difficult enlargement, high processing cost, and high energy consumption of mechanical crushing.

Inactive Publication Date: 2011-08-17
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high energy consumption, high processing cost and difficult enlargement of mechanical pulverization in the process of traditional water-based oil preparation. Through technology integration and innovation, a technical process for steam explosion-water preparation of vegetable oil has been constructed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Get 500g of peanut kernels, soak them in water for 6-12 hours at room temperature, then put them into a steam explosion tank, and put them under a water vapor pressure of 6-15Kg / cm 2 The steam-exploded peanut pulp obtained was frozen overnight, and after thawing, 40°C hot water and 200U / g compound cellulase were added in a mass ratio of 1:2-1:5 to adjust the pH to 4.8, and the enzymatic hydrolysis was carried out for 1 hour. Then heated to 60°C, magnetically stirred and oscillated for extraction at a rotation speed of 100 rpm, until the water and oil formed obvious layers, and the oil layer was collected.

Embodiment 2

[0014] Embodiment 2: Get 500g of soybeans, soak them in water for 6-12 hours at room temperature, then put them into a steam explosion tank, and put them under the water vapor pressure of 6-15Kg / cm 2 Under treatment for 1-5 minutes; the obtained steam-exploded soybean milk is frozen overnight, and after thawing, add hot water at 60°C according to the mass ratio of 1:2-1:5 to make the protein particles absorb water and swell. With the help of the difference in density between the two, use magnetic stirring Extraction, the rotating speed is 100rpm, until the water and oil form obvious layers, and collect the oil layer.

Embodiment 3

[0015] Embodiment 3: Get 500g corn, add water to soak at room temperature for 6~12h, then drop into the steam explosion jar, under water vapor pressure 6~15Kg / cm 2 The steam-exploded plant pulp obtained is frozen overnight, and after thawing, add 60°C hot water at a mass ratio of 1:2-1:5 to make the protein particles absorb water and swell. With the help of the density difference between the two, use magnetic stirring to oscillate Extraction, the rotating speed is 100rpm, until the water and oil form obvious layers, and collect the oil layer.

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Abstract

The invention provides a novel process for preparing vegetable oil from oil crops with a steam explosion-aqueous solvent method. The novel process comprises the steps of: firstly, feeding preimpregnated raw materials into a steam explosion tank, introducing saturated steam (with the pressure reaching 5-15Kg / cm<2>), preserving the pressure for a period of time (1-10min), and then quickly exploding to obtain steam explosion slurry; and then, freezing the steam explosion slurry, standing overnight, defreezing, and adding a certain amount of hot water or / and composite cellulose for oil extraction with an aqueous solvent method, wherein the oil extraction rate reaches 62.26-81.18%. The vegetable oil extracted with the steam explosion-aqueous solvent method has the characteristics of pure color, limpidity, transparency, natural and pleasing flavor and good quality. The novel process provided by the invention for preparing the vegetable oil is suitable to various plant oil raw materials, is beneficial to simplification of an oil seed treating process and solution to the problems of high energy consumption for mechanical pulverization, high treating cost and difficulty in propagation in the traditional process for preparing the vegetable oil with the aqueous solvent method, and has great importance for industrial production of preparing the vegetable oil with the aqueous solvent method.

Description

technical field [0001] The invention belongs to the technical field of extraction of edible vegetable oil, in particular to the steam explosion treatment technology of raw materials before oil extraction. Background technique [0002] Vegetable oil is mostly derived from the seeds of plants, and contains unsaturated fatty acids such as linoleic acid, linolenic acid, oleic acid, etc. necessary for the human body, and is an indispensable food for the human body. The most important sources of vegetable oil are annual plants, such as soybeans, peanuts, canola, and corn; there are also perennial oil tree species, such as walnuts, camellia oleifera, palms, and olives. [0003] At present, vegetable oil extraction processes mainly include pressing method, leaching method and aqueous method. Before pressing or leaching, the oil plants need to be crushed, pulverized, pressed or roasted, and the cell structure of the oil plants is destroyed by mechanical and thermal methods to achiev...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/14C11B1/00A23D9/02
Inventor 陈洪章王玉美陈国忠
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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