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Refining method of rice oil with high phytosterol

A technology for phytosterol and rice oil, which is applied in the field of rice oil refining with high phytosterol, can solve the problems of large loss of characteristic nutrient components, rancidity, and the product quality is difficult to reach the first-class oil standard, etc. quality effect

Active Publication Date: 2019-07-19
ZOUPING JIANYUAN GREASE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The refining of rice oil has always been a technical problem in the industry. Due to the existence of lipolytic enzymes, it is difficult to store rice husk and rice crude oil, and the phenomenon of rancidity is extremely serious. The conventional rice oil refining method consists of the following processes: rice crude oil→filtration→neutralization Deacidification→oil and soap separation→water washing→waste water centrifugation→vacuum drying→decolorization→deodorization→winterization→filtration→finished oil, the product quality is difficult to meet the first-grade oil standard, and the loss of characteristic nutritional components is large, and the loss rate of phytosterol content around 50%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The rice oil refining method with high phytosterol adopts the following process:

[0033] (1) Rice crude oil (phytosterol is 24000mg / kg) is heated to 45°C, and phosphoric acid (concentration is 75%) with an oil weight of 0.9‰ is added, stirred and heated to 60°C, and continued to stir for 10min; then, the adding temperature is 55°C, The lye with a concentration of 12°Bé was stirred and heated to 80°C, reacted for 10 minutes, and centrifuged to remove soapstock to obtain deacidified oil.

[0034] (2) The deacidified oil enters the flash tower through the pipeline for flash dehydration once. The operating pressure in the tower is -0.07MPa, the operating temperature is 40°C, and the time is 15min.

[0035] (3) The deacidified oil after dehydration is transported to the preheater through the feed pump, the preheating temperature is 190°C, and it enters from the top of the primary molecular distillation device. The sour oil is continuously and evenly distributed on the heat...

Embodiment 2

[0044] The rice oil refining method with high phytosterol adopts the following process:

[0045] (1) Rice crude oil (phytosterol is 26200mg / kg) is heated to 50°C, and phosphoric acid (concentration is 80%) with an oil weight of 1.0‰ is added, stirred and heated to 65°C, stopped heating and continued to stir for 15min, and then start adding at a temperature of 60°C ℃, the lye with a concentration of 14°Bé was stirred and heated to 85°C, reacted for 15 minutes, and centrifuged to remove soapstock to obtain deacidified oil.

[0046] (2) The deacidified oil enters the flash tower through the pipeline for flash dehydration once. The operating pressure in the tower is -0.08MPa, the operating temperature is 43°C, and the time is 18 minutes.

[0047](3) The deacidified oil after dehydration is transported to the preheater through the feed pump, the preheating temperature is 200°C, and it enters from the top of the primary molecular distillation device. The sour oil is continuously an...

Embodiment 3

[0056] The rice oil refining method with high phytosterol adopts the following process:

[0057] (1) Rice crude oil (phytosterol is 25700mg / kg) is heated to 55°C, and phosphoric acid (concentration is 85%) with an oil weight of 1.1‰ is added, stirred and heated to 70°C, stopped heating and continued to stir for 20min, and then start adding at 65°C ℃, the lye with a concentration of 16°Bé was stirred and heated to 90°C, reacted for 20 minutes, and centrifuged to remove soapstock to obtain deacidified oil.

[0058] (2) The deacidified oil enters the flash tower through the pipeline for flash dehydration once. The operating pressure in the tower is -0.1MPa, the operating temperature is 45°C, and the time is 20min.

[0059] (3) The deacidified oil after dehydration is transported to the preheater through the feed pump, the preheating temperature is 210°C, and it enters from the top of the primary molecular distillation device. The sour oil is continuously and evenly distributed o...

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Abstract

The invention relates to the technical field of oil and fat processing, in particular to a method for refining rice oil in high-plant sterol. The refining method comprises the following steps of adding acid into crude rice oil for reaction, adding alkali solution to neutralize and deacidify to obtain deacidified oil; injecting deacidified oil into a flash column for once flash dehydration, and distilling, dewaxing, deodorizing and dehydrating for the second time by flash with quaternary molecules to obtain finished rice oil. The method adopts the invention molecular distillation technology creatively, solves the technical problem of traditional rice oil production, improves the quality of rice oil, and retains the characteristic nutrient components, of which the phytosterol content is more than 16000 mg / kg; through respective flash before molecular distillation and after deodorization, the effective use of negative pressure can remove excess oil in the low-temperature conditions and solve the problem that rice oil prepared by the traditional process absorbs water and becomes turbid, and freezing time of finished oil products is more than 24 hours.

Description

technical field [0001] The invention belongs to the technical field of oil processing, and in particular relates to a method for refining rice oil with high phytosterol content. Background technique [0002] Rice oil is a kind of edible vegetable oil prepared from rice husk. The fatty acid composition of rice oil is highly unsaturated, containing about 38% linoleic acid and 42% oleic acid. The ratio of linoleic acid and oleic acid is The ratio is about 1:1.1, which is recognized as nutritious and healthy oil at home and abroad. Rice oil has high nutritional value and is rich in characteristic nutritional components phytosterol and oryzanol. Among them, phytosterol is an active ingredient with multiple physiological functions. , anti-inflammatory, antipyretic, anti-tumor and other physiological effects. [0003] The refining of rice oil has always been a technical problem in the industry. Due to the existence of lipolytic enzymes, it is difficult to store rice husk and rice...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B3/00C11B3/04C11B3/06C11B3/12A23D9/04
CPCA23D9/04C11B3/001C11B3/04C11B3/06C11B3/12
Inventor 王月华王萍房涛张文浩成良玉韩娜
Owner ZOUPING JIANYUAN GREASE
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