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Natural plant pigment and preparation method thereof

A technology for inclusion complexes of natural plant pigments and cyclodextrins, which is applied in the fields of food preparation, natural dyes, chemical instruments and methods, can solve the problems of poor water solubility of xanthohumol and narrow application range, and achieves improved water solubility, improved water solubility, and improved water solubility. Action, high active effect

Inactive Publication Date: 2015-09-02
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a functionally active natural plant pigment extracted from hops or waste hop dregs produced during hop processing, in order to overcome the defects of poor water solubility and narrow application range of the directly obtained plant pigment xanthohumol , the present invention provides a kind of xanthohumol inclusion with cyclodextrin to obtain the xanthohumol-cyclic compound with good water solubility that can be used in beer, medicine, food ingredients, beverage ingredients, health tea ingredients, cosmetics and dye industries. Dextrin inclusion complex

Method used

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  • Natural plant pigment and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Mix 0.1g xanthohumol with 10g α-cyclodextrin, 10g β-cyclodextrin, 10g γ-cyclodextrin, 10g 2-methyl-β-cyclodextrin, 10g 2,6-dimethyl β-cyclodextrin 10g of 2,3,6-trimethyl-β-cyclodextrin and 10g of hydroxypropyl-β-cyclodextrin were mixed and placed in a mortar, and 10mL of distilled water was added to the mixture to make a paste, and ground 1h, then put it in an oven at 40-60 ℃ and dry to constant weight at low temperature to obtain xanthohumol-α-cyclodextrin inclusion compound and xanthohumol-β-cyclodextrin inclusion compound , Xanthohumol-γ-cyclodextrin inclusion compound, Xanthohumol-2-methyl-β-cyclodextrin inclusion compound, Xanthohumol-2,6-dimethyl-β-cyclodextrin inclusion compound Xanthohumol-2,3,6-trimethyl-β-cyclodextrin inclusion compound, xanthohumol-hydroxypropyl-β-cyclodextrin inclusion compound. After analysis, the yield and inclusion rate data of the above clathrates are shown in Table 1.

[0036] Table 1 Comparison of inclusion effects of different cy...

Embodiment 2

[0039] Mix 0.1g of xanthohumol and 5g of β-cyclodextrin evenly and place them in a mortar, dry grind for 2 hours without adding any solvent to obtain the inclusion complex of xanthohumol-β-cyclodextrin, After analysis, the yield of inclusion compound was 96.25%, and the inclusion rate was 27.34%.

Embodiment 3

[0041] Mix 0.2g of xanthohumol and 4g of hydroxypropyl-β-cyclodextrin evenly, put them in a mortar, and dry grind for 1.5h without adding any solvent to obtain xanthohumol-hydroxypropyl -β-cyclodextrin inclusion compound, after analysis, the yield of the inclusion compound was 95.47%, and the inclusion rate was 45.34%.

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Abstract

The invention relates to a natural plant pigment and a preparation method thereof, belonging to the field of extraction and application of natural products. The preparation method comprises the following steps: by using humulus lupulus or waste humulus lupulus residues generated in the humulus lupulus working process as a raw material, extracting and separating to obtain a yellow extract of which the main active component is xanthohumol; and purifying the extract to obtain the xanthohumol yellow crystal or powder. The crystal or powder is insoluble or slightly soluble in water. In order to widen the application range, cyclodextrin is utilized to include the crystal or powder to obtain the xanthohumol cyclodextrin inclusion compound which is applicable to beer, medicine, food proportioning, beverage proportioning, health-care tea proportioning, cosmetics and dye industry.

Description

technical field [0001] The invention relates to a natural plant pigment and a preparation method thereof, belonging to the field of natural product extraction and application. More specifically, the present invention relates to a kind of yellow extract obtained by extracting and separating hops or waste hop dregs produced in the process of hop processing, the main active ingredient of which is xanthohumol. After purification, yellow crystals or powders of xanthohumol are obtained; the above crystals or powders are insoluble or slightly soluble in water. In order to expand its scope of use, cyclodextrin inclusions are further used to obtain suitable for beer, medicine, food ingredients, Xanthohumol cyclodextrin inclusion compound used in beverage ingredients, health tea ingredients, cosmetics and dye industries. Background technique [0002] Hops, scientific name Humulus lupulus L, alias hops, tuodehua, arabesques, hops, hops, hops, etc., is a perennial herb of the family Ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00A23L1/275
CPCC09B61/00
Inventor 刘玉梅吴婕
Owner XINJIANG UNIVERSITY
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