Mulberry leaf extract with anti-corrosion function and application of mulberry leaf extract

A mulberry leaf extract and function technology, applied in the field of natural preservatives, can solve the problems of incomplete extraction of mulberry leaf effective components and high extraction cost, and achieve the effects of easy industrial production, reduced solvent use cost, and simple process flow

Inactive Publication Date: 2011-08-10
JIANGNAN UNIV
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned method is a representative preparation method of mulberry leaf extract in recent years. However, these methods have certain deficiencies: either the extraction of active ingredients of mulberry leaf is not complete, or the extraction cost is too high; Mulberry leaves are added to cosmetics, food as a preservative

Method used

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  • Mulberry leaf extract with anti-corrosion function and application of mulberry leaf extract

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Put 500g of mulberry leaves in a water tank, add 12.5L of water, heat to 95°C for 2 hours, and filter out the extract; add 7.5L of water to the residue, extract for 2 hours under the same conditions, and remove the residue , combined two extracts;

[0029] (2) Concentrate to 1L under reduced pressure in a water bath at 55°C; add ethanol to make the final concentration of ethanol in the system 60%-70%, stir and mix thoroughly, let stand overnight and filter, concentrate the clear liquid to dryness, and obtain a crude extract after drying 77.7 g.

[0030] (3) Disperse the extract with 100-200mL of water and extract it with petroleum ether liquid-liquid, each time with 50mL of petroleum ether, extract 2-4 times until colorless, combine the upper layer of petroleum ether clear liquid, recover the solvent, and concentrate The product was vacuum-dried to obtain 0.315 g of product I as a pale yellow oil. Add chloroform to the remaining aqueous solution in the previous st...

Embodiment 2

[0032] (1) Weigh 500g of mulberry leaves, put them in a water tank, add 10L of water to submerge the mulberry leaves, heat to 85°C and extract twice, each time for 3 hours, the water demand for the second extraction can be appropriately reduced depending on the situation. It is advisable to immerse the mulberry leaves; combine the two extracts.

[0033] (2) Concentrate under reduced pressure to about 800mL, add ethanol for precipitation, so that the final concentration of ethanol in the system is 60% to 70%, and concentrate the filtrate to about 1000mL.

[0034] (3) Divide the concentrated solution into two parts on average, each concentrated solution is about 500mL, and one part is directly extracted with chloroform, each time with 125-250mL of chloroform for 2-4 extractions, extracted until colorless and then combined The solvent was recovered from the extract phase, and 0.6037 g of the extract product II was obtained after drying;

[0035] Another 500mL concentrated soluti...

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Abstract

The invention discloses a mulberry leaf extract with an anti-corrosion function and application of the mulberry leaf extract, belonging to the technical field of natural preservative. The mulberry leaf extract with anti-corrosion bacteriostatic agent function is prepared by taking the mulberry leaves as raw materials, and processing the mulberry leaves under certain conditions through steps of performing aqueous extraction, performing solvent treatment and the like. The preparation process of the mulberry leaf extract mainly comprises the following steps of: performing water-coction extraction on the mulberry leaves, performing alcohol precipitation, concentrating by centrifugal effect, performing liquid-liquid extraction by adding solvent, recycling the solvent, and using vacuum drying technology to dry the residue so as to obtain finished products of the anti-corrosion bacteriostatic agent; and the mulberry leaf extract is mainly used in the fields of cosmetics and foods. The mulberry leaf extract with the anti-corrosion function and the application of the mulberry leaf extract have the advantages of simple technique, low cost, convenient operation, little equipment investment, high activity of products, no pollution to environment, being easy for Industrialized production and the like.

Description

technical field [0001] A mulberry leaf extract with antiseptic function and its application in cosmetics and food, relates to a method for obtaining a high-efficiency antiseptic and antibacterial agent through steps such as water extraction and solvent treatment under certain conditions using mulberry leaves as raw materials, The invention belongs to the technical field of natural preservatives. Background technique [0002] Mulberry leaf is the leaf of Moraceae plant Morus (Morus albal), which is a common traditional Chinese medicine. First seen in "Shen Nong's Materia Medica", it is sweet in taste, calm in nature, and cold in nature. It can clear liver, improve eyesight and ears, calm nerves, moisten lung heat, relieve cough, and clear joints. Mulberry leaves are rich in carbohydrates, proteins, vitamins and mineral elements. For thousands of years, mulberry leaves have been mainly used for silkworm breeding. In recent years, the development and utilization of mulberry ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/08A01P1/00A61K8/97A23L3/3472
Inventor 曹光群赵丽玲迟晓喆
Owner JIANGNAN UNIV
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