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A kind of fresh-keeping method of fresh-eating walnut

A walnut, fresh-eating technology, applied in the field of fresh-eating walnut storage and preservation, can solve the problems of restricting the development of fresh-eating walnut industry, high water content, susceptibility to microbial infection, etc., and achieve the value and prospect of wide application, high Water content, the effect of reducing the incidence of disease

Active Publication Date: 2016-08-24
INST OF BOTANY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high water content, fresh walnuts are susceptible to microbial infection during storage, which restricts the development of the fresh walnut industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] On the second day after removing the green skin, the walnuts were randomly divided into three groups, each with 600 pieces, and the following treatments were performed:

[0014] The first group: Take walnuts, put each 500g of walnuts in a 25cm×37cm vacuum packaging bag, vacuumize to -0.08MPa, and then fill with nitrogen until the pressure at the outlet of the packaging bag is 0.5Mpa, seal, 0℃ Storage

[0015] The second group: Take walnuts, put each 500g walnuts in a 25cm×37cm vacuum packaging bag, first vacuum to -0.06MPa, and then fill with nitrogen until the pressure at the outlet of the packaging bag is 0.5Mpa, seal, 0℃ Storage

[0016] The third group: Take walnuts, put each 15 walnuts in an unsealed plastic box (200mm×130mm×50mm), put the plastic box in a fresh-keeping bag, seal it, and store at 0°C.

[0017] After 8 weeks of storage, the disease was counted according to whether hyphae appeared on the surface of the hard shell. All the walnuts in the third group were af...

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PUM

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Abstract

The invention discloses a storage and preservation method of fresh walnuts. The storage and preservation method comprises the following steps: taking the fresh walnuts from which green peels are removed, putting the fresh walnuts into a packaging bag, vacuumizing till the air pressure is -0.08MPa to -0.06MPa, inflating nitrogen till the gas pressure at an outlet of the packaging bag is 0.5MPa, sealing an opening, and storing at a temperature of 0 DEG C. The storage and preservation method is easy and convenient to operate; by the storage and preservation method, the illness rate of the stored fresh walnuts can be effectively reduced, a relatively high water content can be kept and a commodity property of the fresh walnuts can be maintained; the storage and preservation method has a wide application value and a bright application prospect.

Description

Technical field [0001] The invention relates to a method for storage and preservation of fresh walnuts. Background technique [0002] Walnut (Juglans Legia L.), also known as walnut and Qiang peach, belongs to Jugladaceac (Jugladaceac) Juglans (Juglans) plant. Walnut has high nutritional value, rich in amino acids, unsaturated fatty acids, vitamins and minerals. The unsaturated fatty acids in walnut kernels can reduce the content of cholesterol and triglycerides and increase the activity of brain cells. The polyphenols in walnuts can inhibit the oxidation of plasma and low-density lipoprotein. [0003] As a kind of dried fruit, walnut has been welcomed by consumers for a long time. Since the 1990s, fresh walnuts without drying have become popular worldwide. Compared with dry walnuts, fresh walnuts have a unique flavor and taste, with less loss of nutrients. However, due to the high water content, fresh walnuts are easily infected by microorganisms during storage, which restric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D81/20A23B9/20A23B9/10
Inventor 田世平李博强徐勇尚艳娇
Owner INST OF BOTANY CHINESE ACAD OF SCI
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