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Industrial method for preparing roselle anthocyanin from roselle

A technology of eggplant anthocyanin and roselle, applied in the direction of organic chemistry, etc., can solve the problems of insignificant improvement of product purity and many impurities adsorbed.

Active Publication Date: 2016-01-27
DAXINGANLING LINGOBERRY BOREAL BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the commonly used purification method is mainly carried out by using macroporous adsorption resin. The advantage of macroporous adsorption resin is that it has a large adsorption capacity, can be used repeatedly, and can save costs at a certain cost; the disadvantage is that there are more impurities adsorbed. The product purity improvement is not very significant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Put 100 kg of roselle flowers and 1000 kg of acidic water with a pH value of 2.9 into the ultra-high pressure extraction tank, extract at room temperature, start the high-pressure pump, and quickly raise the pressure to 100 MPa after the air in the container is discharged. Keep it for 18 minutes, then quickly open the valve controlling the high-pressure circuit, relieve the pressure, and release the extract. The extract is pretreated with a microfiltration membrane and then treated with an ultrafiltration membrane. Both the microfiltration membrane and the ultrafiltration membrane are made of vinylidene fluoride (PVDF). The microfiltration membrane has a pore size of 0.1um and an operating pressure of 0.15MPa. The feed liquid temperature is 35°C, the pore size of the ultrafiltration membrane is 30000Dal, the feed liquid temperature is 35°C, the ultrafiltration pressure is 0.30MPa, and the ultrafiltration time is 60min, the filtrate is collected; the filtrate is treated w...

Embodiment 2

[0019] Put 100 kg of roselle flowers and 600 kg of acidic water with a pH value of 2.5 into the ultra-high pressure extraction tank, extract at room temperature, start the high-pressure pump, and quickly raise the pressure to 105 MPa after the air in the container is discharged. Keep it for 20 minutes, then quickly open the valve controlling the high-pressure circuit, relieve the pressure, and release the extract. The extract is pretreated with a microfiltration membrane and then treated with an ultrafiltration membrane. Both the microfiltration membrane and the ultrafiltration membrane are made of vinylidene fluoride (PVDF). The microfiltration membrane has a pore size of 0.2um and an operating pressure of 0.15MPa. The feed liquid temperature is 30°C, the pore size of the ultrafiltration membrane is 50000Dal, the feed liquid temperature is 30°C, the ultrafiltration pressure is 0.25MPa, and the ultrafiltration time is 50min, the filtrate is collected; the filtrate is treated wi...

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Abstract

The invention belongs to the field of natural organic chemistry, and relates to a method for extracting and separating anthocyanin from roselle. The method comprises the steps that ultrahigh pressure extraction equipment is adopted for extracting anthocyanin, then film equipment and macroreticular resin are utilized for purifying anthocyanin, and a high-purity anthocyanin product is obtained. The method has the advantages that low-temperature or normal-temperature extraction is adopted in the superhigh pressure technique, and plant anthocyanin activity can be maintained; an extraction solvent can enter plant cells better through the superhigh pressure technique, and the high extraction efficiency of anthocyanin is achieved; extraction time is short, and energy consumption is low; the content of impurities is low, and the purity of anthocyanin is high; the extraction process is simple, and environmental pollution is avoided. Prepared anthocyanin can be widely applied to the field of healthcare food, cosmetics and the like.

Description

technical field [0001] The invention belongs to the field of natural organic chemistry and relates to a method for preparing roselle anthocyanins from roselle flowers. Background technique [0002] Anthocyanin is a water-soluble pigment that can change color with the acidity and alkalinity of the cell fluid. The cell fluid is acidic and reddish, and the cytosol is alkaline and blue. Anthocyanin is one of the main pigments that make up the color of petals and fruits. Anthocyanins are secondary metabolites of plants, which play an important role in physiology. Anthocyanins are pure natural anti-aging nutritional supplements. Studies have proved that they are the most effective plant antioxidants found by humans today. Its antioxidant properties Fifty times higher than vitamin E and twenty times higher than vitamin C. Its bioavailability to the human body is 100%, and it can be detected in the blood 20 minutes after taking it. It has a significant effect on enhancing vision, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/62
CPCC07D311/62
Inventor 姚德坤苏学辉
Owner DAXINGANLING LINGOBERRY BOREAL BIOTECH CO LTD
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