Preservation method for blueberries

A fresh-keeping method, blueberry technology, applied in the direction of protecting fruits/vegetables with a coating protective layer, can solve the problems of combined application, and achieve the effect of simple operation, low cost and remarkable effect

Active Publication Date: 2015-04-01
上海鲜锐生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technologies study chitosan alone, modified atmosphere packaging preservation, plant leaf application and extraction process, or chitosan combined with modified atmosphere packaging. So far, the three have not been combined.

Method used

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  • Preservation method for blueberries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The present embodiment relates to a kind of fresh-keeping method of blueberry, described method comprises the steps:

[0038] Step 1, the configuration of chitosan acetic acid solution: dissolve chitosan and acetic acid solution (volume percentage concentration: 10%) according to the mass volume ratio of 1:10 (g / ml), and stir;

[0039] Step 2, preparation of blueberry leaf extract solution: take an appropriate amount of blueberry leaves (fresh sample or dry sample) to dry, make powder, and add ethanol (volume percentage concentration: 50% at a mass volume ratio of 1:10 (g / ml) ), mix well, shake for 60 minutes, and centrifuge at 2000 rpm for 30 minutes at room temperature, then take the supernatant and filter it with filter paper, then filter it with a 0.25 μm cellulose acetate membrane, and evaporate the organic solvent with a rotary evaporator. Dilute to volume with deionized water (the mass volume ratio of blueberry leaf powder to deionized water is 1:10 (g / ml));

[...

Embodiment 2

[0045] The present embodiment relates to a kind of fresh-keeping method of blueberry, described method comprises the steps:

[0046] Step 1, the configuration of chitosan acetic acid solution: Dissolve chitosan in acetic acid solution (10% concentration by volume) according to the mass volume ratio of 1:50 (g / ml), and stir;

[0047] Step 2, preparation of blueberry leaf extract solution: take an appropriate amount of blueberry leaves (fresh sample or dry sample) to dry, make powder, add ethanol (volume percentage concentration is 70% at a mass volume ratio of 1:15 (g / ml) ), mix well, shake for 30 minutes, and centrifuge at 12000 rpm for 10 minutes at room temperature, then take the supernatant and filter it with filter paper, then filter it with a 2.5 μm cellulose acetate membrane, evaporate the organic solvent with a rotary evaporator, and use Deionized water (the mass volume ratio of blueberry leaf powder to deionized water is 1:15 (g / ml)) to volume;

[0048] Step 3, adding...

Embodiment 3

[0053] The present embodiment relates to a kind of fresh-keeping method of blueberry, described method comprises the steps:

[0054] Step 1, the configuration of chitosan acetic acid solution: Dissolve chitosan in acetic acid solution (volume percentage concentration is 3%) according to the mass volume ratio of 1:100 (g / ml), and stir;

[0055] Step 2, preparation of blueberry leaf extract solution: take an appropriate amount of blueberry leaves (fresh sample or dry sample) to dry, make powder, add ethanol (volume percentage concentration is 60% at a mass volume ratio of 1:12 (g / ml) ), mix well, shake for 50 minutes, and centrifuge at 10,000 rpm for 20 minutes at room temperature, then take the supernatant and filter it with filter paper, then filter it with a 0.45 μm cellulose acetate membrane, and evaporate the organic solvent with a rotary evaporator. Dilute to volume with deionized water (the mass volume ratio of blueberry leaf powder to deionized water is 1:12 (g / ml));

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Abstract

The invention discloses a preservation method for blueberries. The preservation method comprises the following steps of step 1. preparation of a chitosan acetic acid solution, namely dissolving an appropriate amount of a chitosan solution in an acetic acid solution, and stirring; step 2. preparation of a blueberry leaf extract solution, namely taking and drying blueberry leaves to prepare into powder, adding into ethanol, evenly mixing, oscillating, centrifuging and then taking and filtering a supernatant, and making up to volume by using deionized water; step 3. adding the blueberry leaf extract solution into the chitosan acetic acid solution to obtain a product A, wherein the mass-volume ratio of the blueberry leaf extract solution to the chitosan solution is 1:(200-500); step 4. immersing fresh blueberries into the product A; step 5. after taking out the blueberries, placing the blueberries at a room temperature; and step 6. placing the blueberries into a container, and carrying out modified atmosphere packaging. The preservation method disclosed by the invention is pollution-free and safe, has an obvious effect, and can effectively keep the quality of the blueberries and prolong the shelf life of the blueberries.

Description

technical field [0001] The invention belongs to the technical field of fruit and vegetable preservation, and in particular relates to a fresh-keeping method for blueberries. Background technique [0002] Blueberry (blueberry) belongs to the Vaccinium plant of Rhododendronaceae. Its fruit not only has high nutritional value, but also has moderate sweetness and sourness and good flavor. It is known as the "king of berries". However, fresh blueberries are extremely susceptible to microbial damage and cause fruit corruption. They can only be stored for 3 to 6 days at room temperature, causing huge economic losses and greatly limiting the healthy development of the blueberry industry. [0003] At present, the commonly used fresh-keeping methods for blueberries mainly include modified atmosphere preservation, low-temperature preservation, ultraviolet radiation preservation, and heat-shock treatment preservation. But the fresh-keeping effect of these methods fails to reach the ma...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): A23B7/16
Inventor邓云杨贵云赵艳云岳进钱炳俊王丹凤钟宇
Owner上海鲜锐生物科技有限公司