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Method for preparing sodium copper chlorophyllin by using watermelon outer peel

A technology for sodium copper chlorophyll and chlorophyll, applied in copper organic compounds, organic chemistry and other directions, can solve the problems of low chlorophyll extraction efficiency, large solvent loss, chlorophyll damage, etc., and achieve the effects of avoiding large losses, avoiding degradation and convenient operation.

Inactive Publication Date: 2009-12-02
BEIJING JIANJIAN KANGKANG BIO TECH +1
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  • Claims
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Problems solved by technology

Chlorophyll is a fat-soluble substance, which is unstable in heat and decomposes when exposed to light. The heating extraction method takes a long time, the solvent loss is large, and heating is easy to cause damage to chlorophyll, and the extraction solvent currently used is mainly 95% ethanol , the extraction efficiency of the solvent for chlorophyll is low

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  • Method for preparing sodium copper chlorophyllin by using watermelon outer peel

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Embodiment 1

[0030] (1) First clean the skin of fresh watermelon, cut off the skin with a thickness of 2mm, crush it with a pulverizer, and then use a vacuum freeze dryer to pre-freeze it at minus 40°C for 4 hours, and then freeze the intermediate at minus 15°C Freeze-dry for 24 hours, heat up to 20°C and dry for 4 hours. During the whole freeze-drying process, the vacuum degree in the warehouse is maintained at about 110Pa (the specific vacuum freeze dryer can be Zhengzhou Zhongfa Vacuum Equipment Co., Ltd., ZLGS series food vacuum freeze-drying equipment). (2) Take 1000 grams of frozen watermelon epidermis powder, thaw at room temperature, add acetone:ethanol=1:1 (V / V) mixed solvent according to 1:8 solid-liquid ratio after thawing, after mixing, room temperature intermittent ultrasonic extraction two times (ultrasonic power: 100W, ultrasonic frequency: 28kHz), 30min each time. (3) The extract was filtered, and the filtrate was evaporated to dryness in vacuo at 55° C. to obtain crude ch...

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Abstract

The invention discloses a method for preparing sodium copper chlorophyllin by using watermelon outer peel, comprising the following steps: watermelon outer peel is pulverized and freeze-dried; acetone-alcohol mixed solvent is added into the processed watermelon outer peel powder, and the mixture is performed with ultrasonic extraction after being mixed evenly; the extract liquor is filtrated, the filtrate is dried by vacuum evaporation so as to obtain crude chlorophyll, the crude chlorophyll is dissolved in ethanol, the undissolved substance is eliminated, NaOH solution is used to adjust the acidity and alkaline of chlorophyll to alkalescence, and the produced sediment is eliminated; the process of heating, back flow and saponification are carried out; the saponification liquid is extracted with petroleum ether while oscillating until the petroleum ether extraction layer is faint yellow, then the petroleum ether is eliminated; 5% CuSO4-5H2O solution is added and the mixture is stirred and heated; pH is adjusted to be 1 by hydrochloric acid, the mixture is oscillated evenly after isopyknic distilled water is added, and then the mixture is poured into a separating funnel for standing; after standing for layering, liquid on the lower layer is eliminated to obtain copperchlorophyll; the obtained copperchlorophyll is poured into NaOH solution, then the pH is adjusted to be 11; the mixture is dried to obtain sodium copper chlorophyllin. The method needs no heating, and has small chlorophyllin loss, short extraction time, small solvent loss and high extraction efficiency.

Description

technical field [0001] The invention relates to a method for preparing sodium copper chlorophyllin, in particular to a method for producing sodium copper chlorophyllin by using watermelon epidermis as a raw material by ultrasonic extraction with a mixed solvent, which belongs to the natural product extraction technology in the field of food and medicine. Background technique [0002] my country's watermelon planting technology has developed rapidly in recent years, but most of them are mainly for selling watermelons, the added value of products is low, and the economic benefits are not obvious. The outermost hard skin of watermelon contains a large amount of natural chlorophyll, which can be widely used in food, medicine and other industries; chlorophyll derivatives have the functions of promoting wound healing, anti-ulcer, anti-tumor, anti-microbial, anti-cancer, liver protection, Anti-anemia and many other biological activities. Watermelon skin is rich in chlorophyll, whi...

Claims

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Application Information

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IPC IPC(8): C07D487/22C07F1/08
Inventor 赵力
Owner BEIJING JIANJIAN KANGKANG BIO TECH
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