Extraction and separation of proto flower haematochrome and preparation method of its derivatives

A technology of pigment derivatives and bonuses, applied in the fields of food preparation, chemical instruments and methods, food science, etc.

Inactive Publication Date: 2004-12-22
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But the larch bark involved in the present invention is used as raw material to obtain proanthocya

Method used

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  • Extraction and separation of proto flower haematochrome and preparation method of its derivatives
  • Extraction and separation of proto flower haematochrome and preparation method of its derivatives
  • Extraction and separation of proto flower haematochrome and preparation method of its derivatives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1: Preparation of Crude Proanthocyanin

[0039] Naturally air-dried larch (Larix gmelini) bark is used as raw material, crushed into particles with a particle size of about 1-15 mm, and sieved to remove impurities. Weigh 10Kg of the above-mentioned raw materials, add 80L of 75% acetone aqueous solution, extract in a vacuum reflux tank at a temperature of 35±5°C, and reflux for 8 hours at normal pressure, and then discharge. Through coarse filtration, remove the residue and obtain the filtrate, pump the filtrate into a vacuum reflux tank, concentrate under reduced pressure to recover acetone, discharge the material, and put the material liquid into the extractor to cool to room temperature. Then add petroleum ether for extraction to remove resins and gums. Thus, the extract of proanthocyanidin was obtained, or 1.76Kg of crude pigment product (LPR) was obtained by spray drying, with a yield of about 18%. The molecular structure and coloration principle of the main ...

Embodiment 2

[0045] Step 1: Preparation of Crude Proanthocyanin

[0046] Naturally air-dried, uncrushed larch (Larix gmelini) bark blocks were used as raw materials, sieved to remove impurities, weighed 15Kg of the above raw materials, added 50L of 95% ethanol, soaked at room temperature for 8-12 hours, and then moved into Add 100L of the above-mentioned ethanol solution to the multi-functional stainless steel extraction tank, start the circulation pump at a temperature of 75±5°C, and force reflux to extract for 2 hours, then discharge the filtrate and collect it. Then add 100L of the above-mentioned ethanol solution to the extraction tank, extract for 1 hour according to the above-mentioned process, discharge and collect the filtrate. Then remove the slag in the tank, clean the extraction tank, then combine the filtrate obtained twice, pump into the multi-functional extraction tank, and recover the solvent under reduced pressure at a temperature of 35±5°C. The liquid was released, and af...

Embodiment 3

[0052] Step 1: Preparation of Crude Proanthocyanin

[0053] Naturally air-dried, uncrushed larch (Larix gmelini) bark blocks were used as raw materials, and impurities were removed by sieving, and four parts of the above raw materials were weighed, 10Kg each, and moved into No. 1, No. 2, No. 3 and No. 4 respectively In stainless steel extraction tanks, 80°C hot water is used as the extractant, and countercurrent extraction is used. The material in each tank is extracted 4 times. According to the calculation of a single tank, the amount of each addition is 200L, the total material: hot water=1:80, at a temperature of 80°C, start the stirring device, and extract for 1 hour each time, a total of 4 hours. Then discharge the feed liquid, concentrate under reduced pressure in a three-effect concentrator, and discharge the feed. After coarse filtration, put the feed liquid into the extractor to cool to room temperature, then add light oil to shake or stir, and wait for standing to se...

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Abstract

A process for extracting and separating proanthorubin and preparing its derivative includes naturally drying the bark of larch, pulverizing, removing impurities, proportionally mixing it with solvent, extractin at 30-80 deg.C, vacuum concentrating to recover solvent, filtering, using the extracting solvent to remove resin and gum to obtain coarse proanthorubin, and purifying to obtain proanthorubin E, C, W and A.

Description

1. Technical field [0001] The invention relates to a method for extracting and separating Proanthocyanidins Red and preparing its derivatives. The procyanidin product obtained by the method can be used for color enhancement or tinting of fruit wine, beverage, canned fruit, meat food and cosmetics. 2. Background technology [0002] Food coloring is an important part of food additives. It is not only widely used in beverages, wines, cakes, candies, etc. to improve their appearance, but also in the production of medicine and cosmetics. It belongs to fine chemical products. Food coloring can be divided into two categories: synthetic coloring and natural coloring according to its source. There are 69 kinds of food colorings approved for use in my country (by 1998), including 21 kinds of synthetic colorings and 48 kinds of natural colorings (mostly derived from plant extracts). Liaoning Agricultural Sciences, 2001(1): 29-32. With the development of toxicological research on synt...

Claims

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Application Information

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IPC IPC(8): A23L5/40C09B61/00
Inventor 杜晓石碧
Owner SICHUAN UNIV
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