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

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...

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