Preparation process of high oleic peanut oil and high oleic peanut oil

By using high-oleic peanut kernels and pre-coating combined with low-temperature crystallization and composite membrane filtration technology, the problems of multiple filtration passes and large raw material consumption in the preparation of high-oleic peanut oil are solved, achieving efficient and low-cost peanut oil production and improving the clarity and low-temperature stability of the product.

CN117343790BActive Publication Date: 2025-09-23QINGDAO TIANXIANG FOODS GRP CO LTD +3
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Patent Information

Application Number
CN202311584316.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-11-25
Publication Date
2025-09-23
Estimated Expiration
2043-11-25

AI Technical Summary

Technical Problem

The existing method for preparing high oleic peanut oil requires multiple filtration passes to achieve peanut degumming, moderate dewaxing and defatting. The number of filtration passes is large and the amount of filtration raw materials used needs to be reduced.

Method used

Peanut kernels with high oleic acid content are used as raw materials, and a mixture of oil, diatomaceous earth and perlite is used to pre-coat the filtration equipment to form a pre-coating layer. Combined with low-temperature crystallization and composite membrane filtration, the filtration process is optimized, the number of filtration times and the amount of raw materials used are reduced.

Benefits of technology

The clarity and transparency of peanut oil are improved, the low-temperature stability is improved, the filtration cost and energy consumption are reduced, the production efficiency and resource utilization are improved, and the palatability and nutritional value of peanut oil are enhanced.

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Abstract

The present application relates to the field of edible oils, and specifically discloses a preparation process for high-oleic peanut oil and high-oleic peanut oil. A preparation process for high-oleic peanut oil comprises the following steps: raw material selection: selecting peanut kernels with an oleic acid content of 75% or more; cleaning: removing immature kernels, damaged kernels, moldy kernels, stones, and metals from the peanut kernels; removing red skins: roasting the peanut kernels to a moisture content of 4-5.5%, cooling to room temperature, removing the red skins, and obtaining peanut kernels and peanut red skins; pressing: stir-frying the peanut kernels and pressing them to obtain crude oil and peanut cakes, which are then cooled; pre-coating: mixing oil, diatomaceous earth, and perlite, and then circulating pre-coating on a filter device after mixing; filtering: filtering the crude oil using the pre-coated filter device and nitrogen-filling and filling. The preparation process for high-oleic peanut oil of the present application has the advantages of few filtration passes, less use of filtration raw materials, and good low-temperature resistance and difficulty in stratification of the high-oleic peanut oil produced.
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