Preparation method of high oleic acid peanut oil capable of efficiently removing aflatoxin

By employing a synergistic detoxification process combining nanocomposite adsorbents and gradient microwave fields, the problems of incomplete aflatoxin removal and oleic acid loss in high-oleic peanut oil have been solved, achieving efficient detoxification and oleic acid retention, making it suitable for the industrial production of high-end edible oils.

CN122104337APending Publication Date: 2026-05-29QINGDAO TIANXIANG FOODS GRP CO LTD +2
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Patent Information

Application Number
CN202610426560.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-02
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies are insufficient to efficiently remove aflatoxin from high-oleic peanut oil, and the detoxification process can easily lead to the loss of oleic acid and nutrients, failing to meet the quality requirements of high-end edible oils.

Method used

A synergistic detoxification method combining nanocomposite adsorbents and gradient microwave fields, along with a dynamic adsorption rate model for aflatoxin, was employed. Through low-temperature pretreatment, dynamic adsorption, and precision separation processes, aflatoxin was efficiently removed while oleic acid was retained.

Benefits of technology

It achieves an aflatoxin B1 removal rate of ≥99.5% and an oleic acid retention rate of ≥98%, meeting food safety standards. Furthermore, the process parameters are controllable and suitable for continuous industrial production.

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Abstract

The invention relates to the technical field of edible oil production, in particular to a preparation method of high-oleic-acid peanut oil capable of efficiently removing aflatoxin. Comprising the following five core steps: performing two-stage low-temperature drying pretreatment on a high-oleic-acid peanut raw material, performing low-temperature proper-temperature gradient steaming, frying and squeezing, cooperatively removing aflatoxin by coupling a nano-composite adsorbent with a gradient microwave field, performing precise separation and low-temperature physical refining, and performing online quality control and nitrogen-filling preservation. According to the method disclosed by the invention, accurate regulation and control of process parameters are realized through an aflatoxin dynamic adsorption rate model, a microwave synergistic detoxification efficiency formula and the like, so that the aflatoxin B1 removal rate is greater than or equal to 99.5%, the oleic acid retention rate is greater than or equal to 98%, the aflatoxin B1 content of finished product oil is less than or equal to 0.1 mu g / kg, and the trans-fatty acid generation amount is less than or equal to 0.15%. The edible safety and the nutritional quality of the product are effectively guaranteed.
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