Method for efficiently retaining natural VE and phytosterol in walnut oil

A technology of phytosterols and walnut oil, which is applied in food science, edible oil/fat, fat oil/fat production, etc., can solve the problems of loss of health-care functional components, impact on food hygiene and safety, and lower quality of walnut oil, so as to improve nutrition value effect

Pending Publication Date: 2022-07-01
中粮工科(西安)国际工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment process will cause a large loss of many health-care functional components (such as phytosterols and vitamin E) in walnut oil, which will greatly reduce the quality of finished walnut oil; the added chemical substances may become new pollutants, affecting food hygiene and safety.
[0005] There are certain defects in the production and preparation process of traditional walnut oil, which cannot retain the natural VE and phytosterols in the slag cake formed by pressing, resulting in the loss of many natural VE and phytosterol functional components in the prepared walnut oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for efficiently retaining natural VE and phytosterol in walnut oil, comprising the steps:

[0032] 1) Dry the peeled pecan seeds at a low temperature of 70°C to a water content of 5%, use a shell breaker to break the pecan seeds, and use the pure seeds, pure kernels or seed mixtures formed after breaking the pecan seeds as hydraulic pressing. The raw material of oil machine oil. The pecan seeds dried at low temperature are placed in a hydraulic oil press to make oil, and the pressing is stopped after the oil yield is 52%, and the pecan crude oil and the slag cake are collected respectively;

[0033] 2) Add deionized water to the slag cake obtained in step 1) at a ratio of 1:6w / v of the material-to-liquid ratio, stir in an 800rpm mixer, and remove the residual husk after standing; adjust the pH=4 of the mixed solution and place it in Homogenize in a 3000rpm homogenizer for 2min, centrifuge the mixture after homogenization in a 8000rpm homogenizer centrifuge for...

Embodiment 2

[0037] A method for efficiently retaining natural VE and phytosterol in walnut oil, comprising the steps:

[0038] 1) Dry the peeled pecan seeds at a low temperature of 60°C to a water content of 6%, use a shell breaker to break the pecan seeds, and use the pecan seeds to form pure seeds, pure kernels or mixtures of seed kernels as hydraulic pressing. The raw material of oil machine oil. The pecan seeds dried at low temperature are placed in a hydraulic oil press to make oil, and the pressing is stopped after the oil yield is 50%, and the pecan crude oil and the slag cake are collected respectively;

[0039] 2) The slag cake obtained in step 1) was added with deionized water at a ratio of 1:7w / v of the material-to-liquid ratio, stirred in a 500rpm mixer, and left to stand to remove the residual husk; Homogenize in a 4000rpm homogenizer for 1min, centrifuge the mixture after homogenization in a 10000rpm centrifuge for 15min, separate the oil phase, the water phase and the residu...

Embodiment 3

[0043] A method for efficiently retaining natural VE and phytosterol in walnut oil, comprising the steps:

[0044] 1) Dry the peeled pecan seeds at a low temperature of 80°C to a water content of 4%, use a shell breaker to break the pecan seeds, and use the pure seeds, pure kernels or seed mixtures formed after breaking the pecan seeds as hydraulic pressing. The raw material of oil machine oil. The pecan seeds dried at low temperature are placed in a hydraulic oil press to make oil, and the pressing is stopped after the oil yield is 55%, and the pecan crude oil and the slag cake are collected respectively;

[0045] 2) The slag cake obtained in step 1) was added with deionized water at a ratio of 1:6w / v of the material-to-liquid ratio, stirred in a 1000rpm mixer, and left to stand to remove the residual husk; Homogenize in a 2000rpm homogenizer for 3min, centrifuge the mixture after homogenization in a 7000rpm centrifuge for 30min to separate the oil phase, the water phase and...

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PUM

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Abstract

The invention belongs to the technical field of biological extraction, and particularly relates to a method for efficiently retaining natural VE (vitamin E) and phytosterol in walnut oil, which comprises the following steps of: drying peeled pecan seeds at low temperature, hydraulically squeezing oil, and collecting pecan crude oil and residue cakes; adding water into the slag cake, stirring to obtain pecan water extract oil, performing esterification and alcoholization treatment, naturally cooling, crystallizing, and filtering; adding the obtained phytosterol crystals and the natural VE into the pecan crude oil; and refrigerating the crude pecan oil, separating the supernatant of the crude pecan oil in a refrigeration environment, separating the supernatant of the lower-layer solid-liquid mixture again, and merging to obtain the pecan oil. On the basis of low-temperature drying, the high-quality hickory nut oil is efficiently prepared by adopting the processes of liquid squeezing, water extraction, refrigeration centrifugation and the like, nutritional ingredients of natural VE and phytosterol in grease are not damaged, the natural VE and the phytosterol in residue cakes formed by squeezing can be reserved, and the nutritional value is improved.

Description

technical field [0001] The invention belongs to the technical field of biological extraction, and in particular relates to a method for efficiently retaining natural VE and phytosterol in walnut oil. Background technique [0002] Natural vitamin E widely exists in natural animal and plant tissues, especially in the oil of plant seeds and pulp. It is a light yellow viscous transparent liquid, colorless, odorless, insoluble in water, soluble in ethanol, acetone, Organic solvents such as chloroform and oils. Natural vitamin E is significantly different from synthetic products in terms of production raw materials, optical activity, density, and isomer composition. It can enhance immune function and anti-cancer; protect nervous system, skeletal muscle, retina and delay aging; maintain cardiovascular system. Normal function, etc.; widely used in medicine, food, cosmetics and feed industries. [0003] Phytosterols are widely present in plants and plant seeds, are important compon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/08C11B3/00C11B3/02C11C3/04C11B3/12C11C3/08C11B7/00A23D9/007A23D9/04
CPCC11B1/04C11B1/08C11B3/001C11B3/02C11C3/04C11B3/12C11C3/08C11B7/00A23D9/007A23D9/04
Inventor 张煜史宣明曹万新方晓璞孟佳张旋刘建
Owner 中粮工科(西安)国际工程有限公司
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