Method for extracting dietary fiber from pomelo peel with high flavone content

Abstract

The invention discloses a method for extracting dietary fiber from pomelo peel with high flavone content. After ultrasonic cleaning, freeze-drying, crushing and screening, ultrafine powder treatment,alpha-amylase and glucosidase combined with protease hydrolysis, and finally the freeze-drying is carried out, and total dietary fiber with flavone content not less than 0.8% of the total mass is obtained. According to the method for extracting the dietary fiber from the pomelo with the high flavone content, raw materials have a high utilization rate, the process is simple, needed time is short, destruction of effective components is little, and dietary fiber components in the raw materials are effectively retained.

Description

technical field [0001] The invention belongs to the technical field of separation of plant raw material components, and in particular relates to a method for extracting dietary fiber from pomelo peel with high flavonoid content. Background technique [0002] Dietary fiber (Dietary fiber, DF) is called the seventh nutrient. Studies have shown that insufficient intake has a significant correlation with the occurrence of many chronic diseases such as obesity, diabetes, and cardiovascular disease. Dietary fiber can be divided into two categories: soluble dietary fiber (Soluble dietary fiber, SDF) and insoluble dietary fiber (Insoluble dietary fiber, IDF). The ratio of the two in the dietary fiber derived from fruits and vegetables is significantly higher than that of grain dietary fiber, and it combines more flavonoids and phenolic acids and other substances with antioxidant activity, so that the dietary fiber from fruits and vegetables has better quality. [0003] The pomelo ...

AI Technical Summary

Problems solved by technology

Although this method achieves a higher dietary fiber output, it takes a long time and is not conducive to industrial production

In addition, there is "a method for extracting dietary fiber from banana peels by enzymatic method". It is a hot air drying process. Compared with the dried products, there are great differences in properties. It is inevitable that the volume will shrink, the texture will harden, some substances will be oxidized, and most of some volatile components will be lost. Some heat-sensitive products Substances are prone to denaturation, and the solubility of dried substances in water is greatly reduced

Therefore, the retained dietary fiber content is less and more or less destroyed by hot air and high temperature, especially the flavonoid content cannot be effectively retained

[0005] As people's requirements for material lifestyles are increasing day by day and considerations for environmental friendliness, pomelo fruit has been recognized for its good taste and nutritional value such as invigorating the spleen and nourishing the spleen, regulating the stomach, preventing and fighting cancer, clearing the lungs and nourishing the lungs. People love, but grapefruit peels rich in highly active flavonoids are generally discarded

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