Peeling method of walnut kernels

Abstract

The invention discloses a peeling method of walnut kernels. The peeling method of the walnut kernels includes: picking walnut kernel raw materials; dipping the walnut kernel raw materials in a hot NaHCO3 solution; dipping the walnut kernel raw materials in ice water; washing the walnut kernel raw materials; using normal temperature water to rinse the walnut kernel raw materials, and completing peeling. The peeling method of the walnut kernels obtains peeling rate above 98%, and then the walnut kernels after being peeled are complete in particle, white and savory, hard and fragile in texture, smooth in taste, and small in nutrient loss.

Description

technical field [0001] The invention relates to the technical field of food processing. More specifically, it relates to a method for peeling walnut kernels. Background technique [0002] Walnuts have always been praised as a treasure for health preservation and one of the four major nuts. Walnut kernels are rich in unsaturated fatty acids, high-quality protein, vitamins and minerals and other physiologically active substances, which can nourish qi and blood, nourish the skin and prolong life, black hair and strengthen the brain, etc., especially in the prevention and treatment of cardiovascular and cerebrovascular diseases. Walnuts can be eaten raw or cooked. Nowadays, walnuts are used as raw materials for intensive processing to make various walnut products to meet the needs of different groups of people. But no matter how it is eaten, most of them use peeled walnut kernels as raw materials, and rarely use skinned walnut kernels directly. This is because the seed coat o...

AI Technical Summary

Problems solved by technology

However, NaOH is highly corrosive, and there are the following disadvantages when using it for peeling: 1. Corrosion production equipment, need to frequently replace equipment or use high-cost corrosion-resistant equipment; 2. There is a risk of health damage to production operators, such as improper use or Accidents will cause damage to the health of relevant personnel, or even loss of life, so the labor protection cost for operators is high; 3. The risk of environmental hazards is high. If the lye wastewater after NaOH peeling is directly discharged, it will have a negative impact on the ecological environment. Causes serious harm, so it must be treated and discharged after passing the test, and the waste water treatment cost is high; 4. The walnut kernels treated with NaOH need to be rinsed with a large amount of cleaning water to remove residual lye, which takes a long time and consumes a lot of water; 5. .NaOH peeling process requires very high operating technology, and the concentration of lye, temperature, soaking time, etc. will all affect the peeling effect

[0007] This shows that in the prior art, there is also the problem of inconvenient operation or poor peeling effect in the peeling of walnut kernels. Therefore, a kind of novel peeling method of walnut kernels is needed so that it is less harmful to the environment. Low operational risk, low production cost, low quality loss and high peeling rate

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