Nitrogen-rich mesoporous carbon-based cholesterol adsorption ingredient as well as preparation method and application thereof

By constructing an internal-external synergistic nitrogen-enriching system and regulating the mesoporous structure and surface functional groups of carbon-based materials, the problem of efficiently preparing high-performance cholesterol adsorption materials from grain and oil by-products has been solved, realizing the high-value utilization of resources and the improvement of material performance. It is suitable for use as an ingredient in lipid-lowering functional foods.

CN122074650APending Publication Date: 2026-05-26HENAN UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HENAN UNIVERSITY OF TECHNOLOGY
Filing Date
2026-04-16
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies make it difficult to efficiently prepare carbon-based cholesterol adsorbent materials with mesoporous structures and high nitrogen-containing functional groups using grain and oil by-products. This results in materials with small cholesterol adsorption capacity, poor selectivity, high cost, and low resource utilization.

Method used

An internal-external synergistic nitrogen-enriching system was constructed using grain and oil by-products, exogenous nitrogen-enriched precursors, and compound catalysts. Through pyrolysis and post-treatment processes, the mesoporous structure and surface alkaline nitrogen-containing functional groups of carbon-based materials were precisely controlled to prepare nitrogen-enriched mesoporous carbon-based cholesterol adsorbents with high adsorption performance.

Benefits of technology

This technology enables the high-value utilization of grain and oil by-products, and produces functional ingredients with high cholesterol adsorption capacity and strong selectivity, which meet food safety requirements and are suitable for industrial production.

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Abstract

The invention relates to the technical field of grain and oil by-product high-value utilization and food functional ingredient preparation, in particular to a nitrogen-rich mesoporous carbon-based cholesterol adsorption ingredient as well as a preparation method and application thereof. According to the method, soybean meal and rice bran are taken as a carbon source and an endogenous nitrogen source, and urea or melamine is compounded as an exogenous nitrogen-rich precursor, so that an internal-external synergistic nitrogen-rich system is constructed; the method comprises the following steps: compounding a zinc chloride or potassium hydroxide chemical activator with a ferric chloride catalytic graphitizing agent to form a nitrogen-rich-catalytic synergistic conversion system; the method comprises the steps of raw material pretreatment, nitrogen-rich slurry preparation, catalytic activation precursor preparation and the like. The prepared carbon-based ingredient has a developed mesoporous structure and high-content alkaline nitrogen-containing functional groups, and is large in cholesterol adsorption capacity and high in selectivity, and the raw materials are grain and oil processing byproducts, so that the cost is low, and the carbon-based ingredient is green and environment-friendly; the preparation process has the advantages of controllable parameters and good repeatability, is suitable for industrial production, and provides a new technical path for the development of functional food ingredients for reducing blood fat.
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