Preparation and detection of GO@alpha-CD-MOF (Graphene Oxide@alpha- Cyclodextrin-Metal Organic Framework) bifunctional membrane for separating and enriching naringin

Abstract

The invention relates to preparation and detection of a bifunctional membrane for separating and enriching naringin. The preparation comprises the following steps of firstly, enabling a self-assembledalpha-cyclodextrin metal organic framework (alpha-CD-MOF) to grow on graphene oxide (GO), so that a green composite material GO@alpha-CD-MOF of GO and alpha-CD-MOF is prepared and obtained; afterwards, embedding the self-assembled GO@alpha-CD-MOF into a 0.45 micron PTFE (Polytetrafluoroethylene) membrane, so that a composite membrane with double functions of separating and enriching molecules ofthe naringin is obtained. The membrane can be used for selectively separating and enriching the naringin; the satisfactory recovery rate (80 to 100.3 percent) is obtained. In addition, the membrane isalready successfully applied to a citrus sample; the content of the naringin enriched from the citrus sample reaches 300 to 400 micrograms of the naringin per 1 gram of citrus peel; moreover, the process of extracting the naringin can be completed within 2 minutes, and the result shows that a novel filter membrane based on the GO@alpha-CD-MOF is used for separating and enriching the naringin, hasthe operating characteristics of being quick, simple, convenient and reliable, is high in selectivity and enrichment capacity, and has great application potential in an actual sample.

Description

technical field [0001] The invention relates to the preparation and detection of a GO@α-CD-MOF bifunctional membrane for separating and enriching naringin. Background technique [0002] Flavonoids with a common benzopyrone structure are one of the most important phytonutrients, and the absorption of phytonutrients by the human body is very beneficial to health. As a flavonoid, naringin has been found in many kinds of fruits and used as a functional ingredient in various industrial products, especially based on its antioxidant activity. In the food industry, naringin can not only be used as a natural coloring agent, flavoring agent and bittering agent in food and beverage production, but also as a high-sweetness, non-toxic, low-energy raw material for the synthesis of new sweeteners, suitable for diabetes and the obese. With the development of food, medicine and other industries, the application of naringin will become more and more extensive. Most citrus species accumulat...

AI Technical Summary

Problems solved by technology

The reported materials for the separation and enrichment of naringin are still limited. Therefore, it is necessary to study the preparation and application of new materials with selective separation and enrichment for naringin.

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