Refining method of rice oil

A technology for rice oil and crude oil, which is applied in the direction of oil/fat refining, edible oil/fat, and fat production, etc., can solve the problems of difficult removal of benzopyrene content in oil products, easy generation of trans fatty acids, and high equipment investment costs. , to achieve the effect of eliminating benzopyrene, reducing color and easy operation

Inactive Publication Date: 2015-01-28
唐山圣昊农科发展有限公司
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Problems solved by technology

The shortcomings of traditional physical refining are: high energy consumption, and at the same time, it is easy to produce trans fatty acids in the long-term high-temperature process, which is potentially harmful to human health
The shortcomings of the emerging small molecule distillation technology are: high equipment investment cost, low production capacity, and the content of benzopyrene in oil is not easy to remove, and benzopyrene is a strong carcinogen, which seriously threatens human health

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  • Refining method of rice oil

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Embodiment Construction

[0020] figure 1 As shown in the refining method of the rice oil, the crude oil of the rice oil enters the steps of degumming, primary decolorization, primary deacidification, dewaxing, degreasing, secondary deacidification, secondary decolorization and deodorization successively, and finally obtains refined rice oil; The specific process of each process is as follows.

[0021] 1. Degumming process:

[0022] After the crude oil is heated to 65°C, add phosphoric acid with a crude oil quality of 0.7-1‰ and a concentration of 85wt% for mixing, and then transport it to the acid reaction tank. After the phosphoric acid-added oil stays in the acid reaction tank for 35-40 minutes, Add water and lye of 10 degrees Baume to quickly mix and send to the centrifuge for centrifugal separation. After the centrifuged oil is heated in sequence, add water and quickly mix and send to the second and third centrifuges for water washing and centrifugation. After two The oil washed and centrifuged ...

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Abstract

The invention discloses a refining method of rice oil. The refining method comprises the following steps: degumming; primarily decoloring; primarily deacidifying; dewaxing; degreasing; secondarily deacidifying; secondarily decoloring and deodorizing, wherein the degumming step specifically comprises the following steps: carrying out reaction on heated crude oil and phosphoric acid in an acid reaction tank, then, adding alkaline liquor to mix for centrifugal separation, then, adding water to mix for washing centrifugal separation, and finally vacuum-drying; the primarily deacidifying step is physical deacidifying; the secondarily deacidifying step specifically comprises the following steps: quickly mixing heated oil with alkaline liquor for centrifugal separation, then, adding water for washing centrifugal separation, and finally vacuum-drying. According to the method, in the degumming and secondarily deacidifying steps, alkaline liquor is added to remove part of free fatty acids in grease, thus, not only is oryzanol remained, but also part of pigments can be adsorbed. In the degumming, primarily deacidifying and secondarily deacidifying steps, physical refining and chemical refining are organically combined, so that not only is oryzanol remained and the color reduced, but also the product yield is effectively improved.

Description

technical field [0001] The invention relates to an edible oil processing technology, in particular to a refining method of rice oil. Background technique [0002] Rice oil, commonly known as rice bran oil, is a product obtained by leaching the by-products of rice husk and germ during the whitening process to obtain crude oil, and then undergoing further physical or chemical refining. Because rice oil contains vitamin E, sterols, oryzanol and other substances, this oil has the functions of removing cholesterol in the blood, reducing blood lipids, and promoting human growth and development, and has become a nutritional and healthy oil recognized at home and abroad. What's more worth mentioning is that rice oil not only has the characteristic index of oryzanol, but the content of oryzanol in its crude oil is about 2.5%, and its fatty acid composition is reasonable, so it has attracted widespread attention from all over the world and has become the successor to sunflower oil. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00A23D9/04
CPCC11B3/001A23D9/04C11B3/06C11B3/16
Inventor 严方高道生郭玲玲刘晓慧张亚萍刘小芳
Owner 唐山圣昊农科发展有限公司
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