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Ice-temperature fresh-keeping method for lotus seeds and lotus seeds kept fresh

A fresh-keeping method and technology of lotus seeds, which are applied in the fields of fruit and vegetable preservation, food preservation, fruit/vegetable preservation through freezing/refrigeration, etc., can solve problems such as the influence of lotus seeds on taste, failure to meet market demand, lotus seeds freezing damage, etc., and achieve inhibition of microbial reproduction and pest occurrence, good antifreeze protection, and the effect of lowering the freezing point

Pending Publication Date: 2020-04-10
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, long-term low-temperature storage will cause freezing damage to the lotus seeds, which will still affect the taste of the lotus seeds, and the preservation time is only about three months, which cannot meet market demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Bacteria reduction: Soak lotus seeds in oxidation potential water [produced by Zhejiang Deyinfeike Biotechnology Co., Ltd., diluted with sterile water to a concentration of 40% (V / V) for use] for 15 minutes;

[0033] 2) Color protection and preservation: soak the lotus seeds treated in step 1) in the color protection and preservation solution for 10 minutes and drain; the color protection and preservation solution is an aqueous solution containing sodium phytate, sodium D-isoascorbate, citric acid, and trehalose, wherein The concentration of sodium phytate is 15g / L, the concentration of D-sodium erythorbate is 10g / L, the concentration of citric acid is 15g / L, and the concentration of trehalose is 20g / L;

[0034] 3) Ice burial: put the lotus seeds treated in step 2) into a modified atmosphere packaging bag, and add oxidation potential water ice equivalent to 50% of the mass of the lotus seeds; the preparation method of oxidation potential water ice is: put the oxidation ...

Embodiment 2

[0038] 1) Bacteria reduction: Soak lotus seeds in oxidation potential water [produced by Zhejiang Deyinfeike Biotechnology Co., Ltd., diluted with sterile water to a concentration of 60% (V / V) for use] for 5 minutes;

[0039] 2) Color protection and preservation: soak the lotus seeds treated in step 1) in the color protection and preservation solution for 15 minutes, and then drain; the color protection and preservation solution is an aqueous solution containing sodium phytate, sodium D-isoascorbate, citric acid, and trehalose, wherein The concentration of sodium phytate is 5g / L, the concentration of D-sodium erythorbate is 5g / L, the concentration of citric acid is 5g / L, and the concentration of trehalose is 10g / L;

[0040] 3) Ice burial: put the treated lotus seeds in step 2) into a modified atmosphere packaging bag, and add oxidation potential water ice equivalent to 100% of the mass of lotus seeds at the same time; the preparation method of oxidation potential water ice is: ...

Embodiment 3

[0044] 1) Bacteria reduction: Soak lotus seeds in oxidation potential water [produced by Zhejiang Deyinfeike Biotechnology Co., Ltd., diluted with sterile water to a concentration of 50% (V / V) for use] for 10 minutes;

[0045] 2) Color protection and preservation: soak the lotus seeds treated in step 1) with color protection and preservation solution for 12 minutes and drain; the color protection and preservation solution is an aqueous solution containing sodium phytate, sodium D-isoascorbate, citric acid, and trehalose, wherein , the concentration of sodium phytate is 10g / L, the concentration of D-sodium erythorbate is 8g / L, the concentration of citric acid is 10g / L, and the concentration of trehalose is 15g / L;

[0046] 3) Ice burial: put the lotus seeds treated in step 2) into a modified atmosphere packaging bag, and add oxidation potential water ice equivalent to 80% of the mass of the lotus seeds; the preparation method of oxidation potential water ice is: put the oxidation...

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PUM

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Abstract

One aspect of the invention provides an ice-temperature fresh-keeping method for lotus seeds and lotus seeds kept fresh. The fresh-keeping method includes the following steps: 1) performing sterilization: immersing the lotus seeds in electrolyzed oxidizing water for sterilization; 2) performing color protection and fresh keeping: immersing the lotus seeds treated in the step 1) in a color-protecting fresh-keeping solution, and performing drying; 3) performing ice burying: putting the lotus seeds treated in the step 2) in a modified atmosphere packaging bag filled with electrolyzed oxidizing water ice; 4) performing gas flush packaging: introducing modified atmosphere fresh-keeping gas into the modified atmosphere packaging bag in the step 3); and 5) performing ice-temperature storage: performing ice-temperature storage on the packaged lotus seeds. The method provided by the invention is used for keeping freshness of the fresh lotus seeds, under the condition of -1 DEG C to -3 DEG C, the product can be kept fresh for at least 5 to 6 months or even 6 months or more, lotus seed skin has no obvious browning or no softening phenomena in the fresh keeping stage, and the lotus seeds haveno softening phenomena, do not generate odor, and meet relevant health standards of fruit and vegetable products.

Description

technical field [0001] The invention relates to a fresh-keeping method for fruits and vegetables, in particular to an ice-temperature fresh-keeping method for lotus seeds and fresh-keeping lotus seeds. Background technique [0002] The lotus seed has a strong fragrance and rich nutrition. It also has the functions of calming, strengthening the heart, anti-aging, anti-oxidation, and anti-tumor. It has been recognized as a delicious and nourishing product for all ages since ancient times. Fresh lotus seeds are sweet and tender, not only attractive in taste, but also tonifying the functions of the five internal organs, promoting qi and blood, warming yang and invigorating the kidney, and have extremely high medicinal value. Lotus seeds are rich in protein, fat and carbohydrates. Every 100g of dried lotus seeds contains 19.5g of protein, 1.7g of fat, 58.9g of sugar, V B1 0.23 mg, V B2 0.05mg, V C 7 mg, V E 2.78mg, manganese 9mg, zinc 3.22mg, asparagine and raffinose, etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/04A23B7/148A23B7/154
CPCA23B7/04A23B7/154A23B7/148
Inventor 王发祥刘永乐崔美丽俞健李向红
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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