Process for simultaneously preparing hibiscus vegetable gum and hibiscus chlorophyll copper sodium salt from hibiscus leaves

A technology of sodium copper chlorophyllin salt and process method, which is applied in the field of extraction and preparation of biological products, can solve the problems that plant gum and sodium copper chlorophyllin salt cannot be realized, the yield of plant gum decreases, and the water content of hibiscus is high, and the investment in production equipment can be achieved. Large or small, good effect, simple process effect

Active Publication Date: 2016-08-17
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the extraction method of hibiscus vegetable gum has been reported at present, it is extracted after drying. Due to the high moisture content of hibiscus, the extraction after drying not only consumes a lot of energy, but also the chlorophyll is destroyed during the drying process, so it cannot be obtained at the same time. Vegetable gum and sodium copper chlorophyllin, in addition, the yield of vegetable gum is also greatly reduced after drying

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The specific operation steps of simultaneously preparing hibiscus vegetable gum and hibiscus copper chlorophyllin sodium salt from hibiscus are as follows:

[0021] 1 hibiscus beaten

[0022] Mix 1 kg of fresh hibiscus leaves with 200 ml of beating agent (weight to volume ratio 1:0.2), beat with an electric beater, and pass through a 20-mesh sieve to remove fibrous tissue that is difficult to sift to obtain hibiscus pulp. The beating agent is prepared from water, methanol and acetone in a volume ratio of 0.1:0.1:0.1;

[0023] 2 Preparation of chlorophyll extract

[0024] Centrifuge the hibiscus pulp for 10 minutes at a speed of 10,000 rpm to obtain 400 milliliters of centrifuged supernatant and 400 grams of centrifuged sediment. Add 40 milliliters of chlorophyll extractant to 400 grams of centrifuged sediment, the weight-to-volume ratio of material to liquid is 1:0.1, filter after mixing for 1 minute, obtain 40 milliliters of filtrate, combine filtrate and centrifugal...

Embodiment 2

[0036] The specific operation steps of simultaneously preparing hibiscus vegetable gum and hibiscus copper chlorophyllin sodium salt from hibiscus are as follows:

[0037] 1 hibiscus beaten

[0038] Mix 1 kg of fresh hibiscus leaves with 1000 ml of beating agent (weight to volume ratio 1.0:1.0), then beat with an electric beater, and pass through a 100-mesh sieve to remove fibrous tissue that is difficult to sift through. The beating agent is composed of water, ethanol and acetone in a volume ratio of 1:2:1;

[0039] 2 Preparation of chlorophyll extract

[0040] The hibiscus pulp was suction-filtered under reduced pressure to obtain 1400 ml of filtrate and 300 g of filter residue. Add 180 milliliters (solid-liquid weight-to-volume ratio is 1:0.6) chlorophyll extractant to 300 grams of filter residue, filter after mixing for 30 minutes, obtain 180 milliliters of filtrates, combine twice filtrates to obtain 1580 milliliters of chlorophyll extracts altogether; Filter residue 3...

Embodiment 3

[0052] The specific operation steps of simultaneously preparing hibiscus vegetable gum and hibiscus copper chlorophyllin sodium salt from hibiscus are as follows:

[0053] 1 hibiscus beaten

[0054] Mix 1 kg of fresh hibiscus leaves with 500 ml of beating agent (weight to volume ratio 1:0.5), beat with an electric beater, and pass through a 60-mesh sieve to obtain hibiscus pulp. The beating agent is made by mixing water, ethanol (or methanol) and acetone at a volume ratio of 0.5:1.0:0.5;

[0055] Chlorophyll Extraction

[0056] The hibiscus pulp was suction filtered under reduced pressure to obtain 900 ml of filtrate and 400 g of filter residue. Add 120 ml of chlorophyll extractant to 400 g of filter residue (the weight-to-volume ratio of material to liquid is 1:0.3), mix for 15 minutes, and then filter to obtain 120 ml of filtrate. The two filtrates are combined to obtain 1020 ml of chlorophyll extract, which is also filtered Residue 400 grams. The chlorophyll extractant ...

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Abstract

The invention relates to a technological method for simultaneously preparing both the hibiscus vegetable gum and hibiscus sodium copper chlorophyllin from hibiscus leaves. The used raw material is fresh hibiscus leaves or fresh hibiscus leaves which are wastes of the production of traditional Chinese medicine hibiscus bark. The specific preparation steps are as follows: 1, mixing and pulping the fresh hibiscus leaves and a pulping agent; 2, performing centrifugation and precipitation on hibiscus pulp or filtering the hibiscus pulp to obtain residues, mixing the residues with an extractant, centrifuging or filtering, and merging the supernates or filtrates of the two-time centrifugation, so as to obtain a hibiscus chlorophyll extracting solution, and precipitates or filtration residues at the same time; 3, washing and drying the precipitates or filtration residues, so as to obtain the hibiscus vegetable gum; 4, performing extraction, saponification, copper ion substitution and impurity-removing procedures on the hibiscus chlorophyll extracting solution, so as to obtain the hibiscus sodium copper chlorophyllin. According to the invention, the hibiscus leaves are used for producing the hibiscus vegetable gum and hibiscus sodium copper chlorophyllin, so that wastes of the production of medicinal materials are turned into wealth; the hibiscus sodium copper chlorophyllin as a byproduct is also obtained, the yield of the hibiscus vegetable gum is increased by 30% above, and the energy consumption is reduced by 90% above.

Description

technical field [0001] The invention belongs to the technical field of extraction and preparation of biological products, and in particular relates to a processing method of hibiscus vegetable gum and hibiscus copper chlorophyllin sodium salt. Background technique [0002] Vegetable gum is a polysaccharide substance, which is widely present in the fruit, root, leaf and other tissues of higher plants, and plays a role in softening and sticking the tissues. Utilizing the property that vegetable gum can form very good jelly, it can be widely used in food, chemical, pharmaceutical and other industries as gelling agent, thickener, emulsifier, stabilizer, and dehydrating agent. Vegetable gum can also be used as a thickener for petroleum oil well fracturing fluid, a flocculant for geological drilling flushing fluid, a catalyst for petroleum refining, a flocculant and filter aid for mineral processing operations, an additive for the paper industry, thread thickening and textile sizi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00C07D487/22
Inventor 胡丰林陆瑞利
Owner ANHUI AGRICULTURAL UNIVERSITY
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