Method for preparing photinia fruit natural dye and application of photinia fruit natural dye

Abstract

The invention relates to the field of natural dyes and application thereof and aims to provide a method for preparing a photinia fruit natural dye and application of the photinia fruit natural dye. The preparation method comprises the following steps of: (1) washing and airing fresh photinia fruits and dried photinia fruits, and mechanically crushing the fruits; and (2) adding the crushed photinia fruits into aqueous solution of ethanol for reflux extraction, raising the temperature of the extract to between 70 and 90 DEG C, keeping the temperature, filtering and distilling under reduced pressure to make the volume of concentrated solution 1 / 6 to 1 / 2 of the original volume of the extract so as to obtain the concentrated photinia fruit natural dye. The method for preparing the photinia fruit natural dye has the advantages of simple extraction technology, extraction efficiency obviously higher than that of ethanol reflux and other methods, and no environmental pollution in the extraction process; and the extract has the advantages of good color fastness to protein fibers, capacity of increasing color spectrum after dyeing by using environment-friendly dye mordant treatment, gentle color and safe wear of the dyed fabrics without carcinogenic, teratogenetic actions or anaphylactic reaction, high ecological environment compatibility, biodegradation, low price, full utilization of natural resources and wide market prospect.

Description

technical field [0001] The invention relates to natural dyes and the application field thereof, in particular to a preparation method and application of heather fruit natural dyes. Background technique [0002] Photinia is a plant of the genus Photinia in the Rosaceae family, an evergreen shrub, also known as Millennium Red. Distributed in South Central and Jiangsu, Anhui, Zhejiang, Jiangxi, Taiwan, Sichuan and Guizhou. Photinia is an excellent garden ornamental plant, which is widely used in urban greening at present. It has strong resistance to sulfur dioxide and chlorine, and has sound insulation function. The ursolic acid contained in heather leaves has obvious stabilizing and cooling effects, and has analgesic, anti-inflammatory and anti-cancer effects, and has inhibitory effects on Gram-positive bacteria, negative bacteria and yeasts; its roots and branches can For medicinal purposes, it has the effects of promoting blood circulation, stopping bleeding, and relieving...

AI Technical Summary

Problems solved by technology

The fruit of heather is even more red and beautiful, and it is fruitful in autumn. However, except for its ornamental value, there is no research report so far. It is a pity to discard it. The relevant research at home and abroad is still blank.

And about the preparation method of heather fruit natural dye, and its dyeing process research on protein, cellulose fiber, there is no report at home and abroad