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Method for synchronously preparing walnut oil and walnut peptide

A technology for walnut protein and walnut oil, which is applied in the field of microwave-assisted proteolysis to prepare walnut oil and walnut protein peptides, can solve the problems that have not been seen in the research and application of microwave-assisted proteolysis, and achieve shortened processing time, easy operation and control, The effect of simple equipment

Inactive Publication Date: 2011-02-02
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So up to now, there have been no reports on the research and application of microwave-assisted proteolysis in the simultaneous preparation of walnut oil and walnut protein peptides.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 Grind 1 kg of dried walnut kernels into walnut mud, add 100,000 units of papain, add 500 ml of pure water under 60 rpm stirring condition, and use 1300w microwave treatment for 3 minutes under 60 rpm stirring condition, and control the temperature at 65°C to complete the reaction Then centrifuge at 4000rpm to separate and obtain 0.5kg of oil phase, 0.35kg of water phase and 0.65kg of solid phase. The obtained oil phase was clear walnut oil, and the water phase was subjected to enzyme inactivation at 90° C. for 3 minutes and freeze-dried to obtain 0.2 kg of walnut protein peptide coarse powder, and the solid phase residue was dried and pulverized to obtain 0.3 kg of dietary fiber food.

Embodiment 2

[0026] Example 2: Grind 1 kg of dried walnuts into walnut puree, add 500,000 units of pineapple enzyme and 500,000 units of papain, and add 1000 ml of pure water to make slurry under 120 rpm stirring condition, and use 600w microwave under 60 rpm stirring condition Treat for 10 minutes, control the temperature at 45°C, centrifuge at 4000 rpm after the reaction, and separate to obtain 0.52 kg of oil phase, 0.83 kg of water phase, and 0.65 kg of solid phase. The obtained oil phase was clear walnut oil, the water phase was inactivated at 90° C. for 3 minutes, spray-dried to obtain 0.22 kg of walnut protein peptide coarse powder, and the solid phase residue was dried and pulverized to obtain 0.26 kg of dietary fiber food.

Embodiment 3

[0027] Example 3 1 kg of undeoiled walnut coarse powder is finely ground into walnut mud, and a compound protease composed of 10,000 units of pepsin and 500,000 units of pineapple enzyme is added, and 20 kg of pure water is added under the stirring condition of 100 rpm to mix the slurry, and it is used under the stirring condition of 300 rpm. 5000w microwave treatment for 15 minutes, control the temperature at 35°C, centrifuge at 4000rpm after the reaction, and separate to obtain 0.54kg of oil phase, 19.8kg of water phase and 0.66kg of solid phase. The obtained oil phase is clear walnut oil, and the solid phase residue is dried and crushed to obtain 0.21 kg of dietary fiber food. The water phase is 90°C for 3 minutes to inactivate the enzyme, and then intercepted by a membrane filter to obtain components with molecular weights between 200 and 8000 Daltons 0.45kg of the solution, 0.45gk of the components greater than 8000 Daltons, respectively freeze-dried to obtain 0.09kg of wa...

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Abstract

The invention relates to a technology for synchronously preparing walnut oil and walnut peptide by means of microwave-assisted enzymolysis, belonging to the technical field of the food or the health food. The technology comprises the following steps of: removing the coat and the core of the walnut, grinding the walnut into walnut slurry, adding the water to prepare the slurry, hydrolyzing by adding the protease or the composite protease, treating by microwave, and centrifugally separating the oil phase, the peptide water phase and the residual solid phase, wherein the obtained oil phase is the cleaning and bright walnut oil which can meet the requirement of the green food; and further physically refining the oil phase at low temperature to be taken as the raw material oil of the high-class edible oil, the health food oil, the blend oil and the like. The obtained walnut peptide water solution can be directly used for preparing the degreased walnut peptide beverage by means of the enzyme inactivating, or can be used for preparing the active polypeptide product such as the walnut antioxidant peptide by means of the ultra-filtrating for the health food, the food additive, the nutrition reinforcing agent, the cosmetic, the daily chemicals and the like, or can be used for preparing the walnut peptide powder by means of the mist spray drying at low temperature. The technology improves the extraction efficiency of the walnut oil and the walnut peptide, and is simple in equipment, short in period, safe, low in energy consumption, high in use ratio and free of three-waste pollution.

Description

technical field [0001] The invention relates to the technical field of food or health food, in particular to a microwave-assisted proteolysis technology for preparing walnut oil and walnut protein peptide. Background technique [0002] Walnut (Juglans regia L.), also known as Juglans regia L., belongs to Juglans Juglans. Walnut kernels contain up to 65% oil, more than 15.4% protein, in addition to phospholipids, multivitamins, and linoleic acid and linolenic acid in sufficient quantities and appropriate proportions (Table of Food Nutrients, People's Medical Publishing House, 1991). Walnut oil has high medical and edible value (Zhao Shenglan et al., Journal of Yunnan University of Traditional Chinese Medicine, 2008, 1:61), and its preparation methods include pressing, water banding, and solvent extraction. In recent years, the water enzymatic method has been used to extract walnut oil (Yi Jianhua et al.: China Oils and Oils, 2007, 2: 27; 2007, 4: 20), and the clear oil yield...

Claims

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Application Information

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IPC IPC(8): A23D9/02C12P21/06A23L1/305C11B1/00C11B1/04A61K47/44A61K8/64A23L2/38A61K8/92A23L33/18A23L33/185
Inventor 陈朝银赵声兰葛锋韩本勇刘迪秋熊向峰
Owner KUNMING UNIV OF SCI & TECH
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