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A kind of double-layer coating method and its formula for suppressing apple postharvest diseases

A postharvest disease and coating technology, which is applied in the direction of food ingredients containing natural extracts, protection of fruits/vegetables with a coating protective layer, food ingredients as anti-microbial preservation, etc., can solve problems such as fruit diseases and achieve increased inhibition function, the effect of improving the retention rate

Active Publication Date: 2022-05-03
CHINA AGRI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, there is no relevant report on the application of multi-layer coating method in postharvest fruit diseases

Method used

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  • A kind of double-layer coating method and its formula for suppressing apple postharvest diseases
  • A kind of double-layer coating method and its formula for suppressing apple postharvest diseases
  • A kind of double-layer coating method and its formula for suppressing apple postharvest diseases

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preparation example Construction

[0031] 2. Preparation of coating solution A: 50 g of chitosan was dissolved in 5 L of distilled water containing 1% (wt%) acetic acid. After stirring until completely dissolved, the pH of the chitosan solution was adjusted to 6.0 with 0.1M NaOH, then 2% (wt%) clove essential oil and 0.1% (wt%) Tween 80 were added and stirred for one hour.

[0032] 3. Preparation of coating solution B: 50 g of gum arabic was dissolved in 5 L of distilled water containing 1% (wt%) acetic acid. Then add 2% (wt%) cinnamon essential oil and 0.1% (wt%) Tween 80, and stir for one hour.

[0033] 4. First immerse the apple fruit in the coating solution A for 0.5-2 minutes, then place it in the air for half an hour and let it dry to obtain a single-layer A coated fruit;

[0034] 5. Immerse the single-layer A-coated fruit in the coating solution B again for 0.5-2 minutes, and then place it in the air for half an hour to dry to obtain a double-layer coated fruit.

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Abstract

The invention relates to the technical field of fruit postharvest disease prevention and control, in particular to a double-layer coating method and a formula thereof for suppressing postharvest disease of apples. The formula includes coating solution A and coating solution B, wherein the composition of coating solution A in use state is: 0.2%-2.0wt% chitosan, 0.5%-3.0wt% clove essential oil, 0.08-0.12wt% Tween 80, the rest is formula distilled water, and the formula distilled water is distilled water containing 0.5-1wt% acetic acid; the composition of coating solution B in use is: 0.5-2.0wt% gum arabic, 0.5-2.0wt% cinnamon essential oil, 0.08-2.0wt% cinnamon essential oil, 0.12wt% Tween 80, the rest is distilled water of the above formula. The invention adopts a double-layer coating method, improves the retention rate of the cinnamon essential oil in the chitosan coating, and significantly increases the inhibitory effect of the chitosan coating on common fungal infections of postharvest apple fruits.

Description

technical field [0001] The invention relates to the technical field of fruit postharvest disease prevention and control, in particular to a double-layer coating method and a formula thereof for suppressing postharvest disease of apples. Background technique [0002] Losses during storage of postharvest fruit caused by fungal pathogens are substantial. Due to the adverse environmental and health effects of synthetic fungicides, natural antimicrobial substances of plant origin have received increasing attention. Essential oils of plant origin are promising alternatives for the control of fungal pathogens due to their natural antimicrobial activity. The strong flavor and volatility of essential oils determine their practical application mainly in edible films and coatings. [0003] As a positively charged polysaccharide, chitosan has been widely used in the preparation of edible coatings and films due to its good biocompatibility, strong film-forming ability and natural antib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B7/16
CPCA23B7/16A23V2002/00A23V2200/10A23V2250/511A23V2250/5022A23V2250/21
Inventor 姜微波张万立舒畅曹建康
Owner CHINA AGRI UNIV