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Method for producing grape seed oil from polyphenol-extracted grape seeds

A grape seed oil and grape seed technology, which is applied in the direction of fat oil/fat production, fat production, edible oil/fat, etc., can solve the problems of dark black color of grape seed oil and is not suitable for removal, so as to improve the decolorization effect and recovery rate High, oil-reducing effect

Active Publication Date: 2014-06-18
河北丝路晨光油脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since grape seed extract polyphenols mostly use water or ethanol as the extraction solvent, the extracted grape seeds must be dried for dehydration. However, during the dehydration process, the high temperature will cause the pigment in the grape seeds to coke, resulting in the extraction of grape seed oil. The color is dark black and should not be removed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: The method for producing grape seed oil from grape seeds after extracting polyphenols adopts the following specific processes.

[0019] (1) After cleaning the grape seeds with polyphenols, soften them with indirect steam at 80°C for 25 minutes in a softening pot, and then pass them through a flaking machine to form raw material embryos with a thickness of 0.3 mm.

[0020] (2) Extract raw material embryos with n-hexane solvent to obtain a mixed oil composed of n-hexane and oil; the mixed oil is evaporated into a mixed oil with a concentration of 53wt% at a temperature of 55°C and a negative pressure of 0.075Mpa in an evaporator.

[0021] (3) Heat up the mixed oil to 55°C, add food-grade activated clay with an oil weight of 3%, stir well for 30 minutes, and centrifuge to separate into mixed oil and decolorized waste clay; heat the separated mixed oil to 70°C , Adjust the negative pressure to 0.08Mpa to remove the solvent and reclaim it to obtain the decolori...

Embodiment 2

[0029] Embodiment 2: The method for producing grape seed oil from grape seeds after extracting polyphenols adopts the following specific processes.

[0030] (1) After cleaning the grape seeds with polyphenols, soften them with indirect steam at 83°C for 30 minutes in a softening pot, and then pass them through a flaking machine to form raw material embryos with a thickness of 0.2 mm.

[0031] (2) Extract the raw material embryos with n-hexane solvent to form a mixed oil; the mixed oil is evaporated with an evaporator at a temperature of 60°C and a negative pressure of 0.08Mpa to become a mixed oil with a concentration of 55wt%.

[0032] (3) Heat up the mixed oil to 58°C, add food-grade activated clay with an oil weight of 3%, stir well for 30 minutes, and centrifuge; heat the separated mixed oil to 75°C, adjust the negative pressure to 0.085Mpa to remove the solvent and Carry out recovery, obtain the grape seed crude oil after the decolorization, color and luster index is ligh...

Embodiment 3

[0040] Embodiment 3: The method for producing grape seed oil from grape seeds after extracting polyphenols adopts the following specific processes.

[0041] (1) After cleaning the grape seeds with polyphenols, soften them with indirect steam at 75°C for 20 minutes in a softening pot, and then pass them through a flaking machine to form raw material embryos with a thickness of 0.5 mm.

[0042] (2) Extract the raw material embryos with n-hexane solvent to form a mixed oil; the mixed oil is evaporated with an evaporator at a temperature of 65°C and a negative pressure of 0.073Mpa to make a mixed oil with a concentration of 60wt%.

[0043] (3) Heat up the mixed oil to 57°C, add food-grade activated clay with an oil weight of 4%, stir well for 40 minutes, and centrifuge; heat the separated mixed oil to 73°C, adjust the negative pressure to 0.083Mpa to remove the solvent and Carry out recovery, obtain the grape seed crude oil after the decolorization, color and luster index is light y...

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Abstract

The invention discloses a method for producing grape seed oil from polyphenol-extracted grape seeds. The method comprises the following steps: extracting the polyphenol-extracted grape seeds to obtain mixed oil of an extracting agent and an oil material; decolorizing and separating the mixed oil to obtain decolorized crude grape seed oil; further refining the crude grape seed oil to obtain a grape seed oil finished product. The method is used for firstly decolorizing and then separating the mixed oil after the grape seeds are leached rather than firstly separating to obtain the crude oil and then decolorizing; the mixed oil has the characteristics of low density and low viscosity, and the coherency of pigments in the crude grape seed oil is dispersed, so that the decolorization effect and the decolorization efficiency can be effectively improved so as to obtain clear and transparent grape seed oil. The method is simple in process and convenient to operate, the color and gloss of a produced finished product totally accord with the specified indexes of the national standards, and the product quality of the grape seed oil is guaranteed.

Description

technical field [0001] The invention relates to a method for producing edible oil, in particular to a method for producing grape seed oil from grape seeds after extracting polyphenols. Background technique [0002] At present, the edible oils used in people's daily life in our country are mainly soybean oil, cottonseed oil, rapeseed oil and other bulk oils and fats. And along with the raising of living standard, people are increasing day by day to the demand of small variety oil plant oil, though small variety oil contains special nutritious finished product, but raw material is the by-product of producing other products. At present, there are two main raw materials for the production of grape seed oil. One is to use the isolated grape seeds after processing wine as raw materials; Raw material of seed oil. [0003] At present, the production of grape seed oil mainly adopts two extraction processes: pressing method and leaching method. Since the oil content of grape seeds ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10C11B3/00A23D9/04
Inventor 田章起杨俊旺
Owner 河北丝路晨光油脂有限公司
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