Method for separation and concentration of fruit and vegetable materials carotene

Abstract

The invention discloses a method for separating and enriching carotenoids from fruit and vegetable raw materials, which comprises the following steps: (1) at least one raw material in fruits and vegetables is cleaned, trimmed, and treated with a juice extractor to separate residues and raw juices; (2) the original juice obtained in step (1) is obtained through coarse filtration to obtain filter residue and filtrate, and after the filtrate is processed by an ultrafiltration device with a molecular weight cut-off of 10,000-300,000, the retentate and permeate are obtained; (3) the retentate The liquid is dried and extracted according to conventional methods to obtain carotenoids. After the original juice is treated by an ultrafiltration device, the retained liquid is concentrated nearly 18 times; the carotene is increased to 17 times that of the original juice and 15 times that of the raw material. The volume of carotene extract is reduced to 3.7% of the original volume, while the content of the target substance is increased by 15 times, which greatly improves the extraction efficiency and reduces the extraction cost; the permeate can maintain the aroma and all water-soluble nutrients of the original fruit juice or vegetable juice, and can be used For further processing into fruit juice or vegetable juice beverage.

Description

technical field [0001] The invention relates to a method for separating and enriching bioactive substances from fruit or vegetable raw materials, in particular to a method for separating and enriching carotenoids. Background technique [0002] Many plants in nature contain natural active ingredients that are beneficial to human health or have high utilization value. More and more natural plant extracts have been promoted and applied in many fields such as food, medicine, and cosmetics. [0003] Carrots contain a variety of natural carotenoids. There are three main uses: the first is edible natural pigment, which has good coloring function and is very bright and pleasing to the eye, and is widely used in the food industry; the second is health food, which is the precursor of vitamin A and can prevent and treat vitamin A. A deficiency. In recent years, it has been found that β-carotene has the special effects of anti-cancer, anti-aging, and scavenging free radicals, and has b...

AI Technical Summary

Problems solved by technology

[0005] At present, the effective ingredients such as carotenoids are extracted from fruits and vegetables or other plants, and the method of directly extracting the whole material after drying and dehydrating the raw materials is mostly used. Due to the high moisture content of the raw materials of fruits and vegetables, a large amount of heat energy is consumed during drying, and at the same time, the active ingredients are extracted from the whole material. Due to the relatively low content, the extraction cost is high and the extraction rate is low. On the other hand, it will also cause a large proportion of edible materials to be discarded or treated as primary fertilizers and feeds cheaply, especially the waste residue after solvent extraction. , deal with high cost issues

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