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Edible vegetable oil with lower trans fatty acid and refining method thereof

A technology of trans fatty acid and edible vegetable oil, applied in the direction of fat oil/fat refining, fat production, food science, etc., can solve the problems that vegetable oil cannot meet the purity and storage resistance, reduce deodorization temperature, brain function decline, etc., and achieve trans fatty acid The effect of low content, purity and storage resistance, and high smoke point

Inactive Publication Date: 2013-04-24
SHENZHEN NANSHUN GREASE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] (1) affect growth and development;
[0016] (2) lead to thrombosis;
[0018] (4) causing brain function decline;
If the deodorization temperature is directly and simply lowered in the deodorization section to prevent the trans-structuring of fatty acids, the refined vegetable oil cannot meet the national standards (such as color, smoke point, odor, purity and storage resistance)

Method used

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  • Edible vegetable oil with lower trans fatty acid and refining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 400 tons of soybean oil, its crude oil quality: FFA=0.51% PV=2.47meq / kg Impurities: 0.03% Phospholipids: 61.36ppm

[0040] Refining 200 tons of soybean oil according to conventional process conditions, namely: crude oil→degumming→deacidification→desoaping→dehydration→decolorization→deimpurity→deoxidation→deodorization→cooling→finished product

[0041] The parameters of each section are as follows: according to the oil content 0.1wt%, evenly add phosphoric acid; according to the free fatty acid content, evenly add caustic soda and superalkali 15%; according to the oil quantity 10wt%, add soft water for washing; then, according to the oil quantity 1.2wt%, add clay for decolorization, The secondary filter element is 25μm, the deodorization temperature is 255°C, the deodorization flow rate is 10500L / h, the deodorization time is 45min, and the vacuum is maintained at 4τ; after all of them are refined, a mixed sample is taken for inspection.

[0042] The remaining 200 tons of...

Embodiment 2

[0049] 400 tons of canola oil, the quality index of crude oil is as follows: FFA=0.42% PV=2.8meq / kg Impurities: 0.03% Phospholipids: 31.3ppm

[0050] Refining 200 tons of canola oil according to conventional process conditions, the parameters of each section are as follows: add phosphoric acid evenly according to the oil content 0.08wt%; add caustic soda evenly according to the free fatty acid content and super alkali 15%; After washing with soft water; according to the oil content of 1.2wt%, clay is added for decolorization. The secondary filter element is 25μm, the deodorization temperature is 255°C, and the deodorization flow rate is 10500L / h.

[0051] Refining the remaining 200 tons of canola oil according to the method of the present invention, replacing the secondary filter element with 10 μm, pressurized filtration to maintain the normal flow rate; the deodorization temperature is set at 240 °C, the flow rate is 10500 L / h, and the deodorization time After 45 minutes, a...

Embodiment 3

[0058] Compared with 400 tons of dewaxed corn oil that has been neutralized and decolorized, its quality indicators are as follows: FFA=0.20% PV=1.57meq / kg Impurities 0.01% Phosphorus 0.56ppm

[0059] 200 tons of dewaxed corn oil were refined, decolorized and deodorized according to conventional process conditions (since the oil has been dewaxed, there is only a decolorization and deodorization section). Add clay according to 0.8wt% of the oil amount, the filter element is 25μm, the deodorization temperature is 260°C, the vacuum is maintained at 4τ, the flow rate is 10000L / h, and the deodorization time is 45min.

[0060] Refining the remaining 200 tons of dewaxed corn oil according to the method of the present invention, replacing the secondary filter element with 10 μm, pressurized filtration to maintain the normal flow rate; the deodorization temperature is set at 245 ° C, the flow rate is 10500 L / h, and the deodorization time is 45 minutes. Adjust the vacuum to be stable at...

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Abstract

The invention relates to fully refined edible vegetable oil with lower trans fatty acid and a refining method thereof. The vegetable oil is rapeseed oil, soybean oil, corn oil or blending oil with any ratio; the trans fatty acid content of the vegetable oil is less than or equal to 1 weight percent; and the oil smoke point is more than or equal to 210 DEG C. The refining method comprises the steps of selecting crude oil, degumming, deacidifying, removing saponin, dehydrating, decoloring, removing impurities, deoxidizing, deodorizing, cooling and obtaining finished products. The refining method is characterized in that: at the decoloring state, the removing grain size of the impurities is reduced from 25 mu m to 10 mu m; and at the deodorizing stage, the deodorizing temperature is controlled to be between 230 and 245 DEG C and the vacuum degree is controlled to be within 2 tau. Oil is refined at lower temperature and a lowest trans fat structure is realized by controlling the grain size of the impurities and the vacuum degree; after being refined, the vegetable oil has good quality, namely the trans fatty acid is reduced to be lower than 60 percent of the normal level; and the refined vegetable oil has light color, high smoke point, high purity and storage resistance and is beneficial to people's long-term health.

Description

technical field [0001] The invention relates to a fully refined edible vegetable oil with lower trans fatty acid and a refining method thereof. Background technique [0002] Edible oil is a necessity in people's daily life. With the progress of society and the improvement of people's living standards, people have higher and higher requirements for the quality of edible oil, among which "trans fatty acid" has attracted people's attention. [0003] After the oil is separated from the plant seeds, the oil contains non-triglyceride impurities such as plant residues, gums, pigments, free fatty acids that have become rancid, and solvents used for leaching. The purpose of oil refining is to completely remove the substances listed above. The common process is: crude oil→degumming→deacidification→desoaping→dehydration→decolorization→deimpurity→deoxidation→deodorization→cooling→finished product. The above processes are divided into: [0004] Neutralization section, including: crude ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23D9/04C11B3/00
Inventor 龚遂
Owner SHENZHEN NANSHUN GREASE
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