Grape composite coating antistaling agent and preparation method thereof

A film-coating preservative and grape technology, which is applied to the preservation of fruits and vegetables, protection of fruits/vegetables with a protective layer, food preservation, etc. Maximized, effective, low-cost effects

Active Publication Date: 2015-04-22
HUNAN JIUYISHANFENGLI AGRI DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems that the grape preservatives in the prior art will cause harm to the human body, have poor safety and poor grape fresh-keeping effect, and provide a grape compound with reasonable and scientific formula, low cost, safe and effective, and good grape fresh-keeping effect. Coating Preservative

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A grape compound coating film preservative, which is composed of the following components in mass percentage: 0.1% phytic acid, 2% pullulan, 0.3% CaCl 2 , 0.01% modified nano-SiO 2 , 0.02% monoglyceride, 0.01% tea polyphenols, and the balance is water.

[0017] This grape composite coating preservative is obtained by the following method:

[0018] (1) Preparation of modified nano-SiO 2 : Nano-SiO 2 Adding mass percentage concentration is in the sodium dodecylsulfonate aqueous solution of 0.5%, nanometer SiO 2 The mass ratio to sodium dodecylsulfonate aqueous solution is 1:100, adjust the pH to 4, stir for 6 hours, filter, wash with water, and finally dry and grind to obtain modified nano-SiO 2 ,stand-by;

[0019] (2) Step-by-step mixing: weigh phytic acid, pullulan, CaCl according to the above ratio 2 , Modified nano-SiO 2 , monoglyceride, tea polyphenols and water, first add monoglyceride into water and stir evenly, then add modified nano-SiO 2 , after ultrason...

Embodiment 2

[0021] A grape composite coating preservative, consisting of the following components in mass percentage: 0.15% phytic acid, 3% pullulan, 0.5% CaCl 2 , 0.05% modified nano-SiO 2 , 0.05% monoglyceride, 0.03% tea polyphenols, and the balance is water.

[0022] This grape composite coating preservative is obtained by the following method:

[0023] (1) Preparation of modified nano-SiO 2 : Nano-SiO 2 Add the mass percentage concentration and be in the sodium dodecylsulfonate aqueous solution of 0.7%, nanometer SiO 2 The mass ratio to sodium dodecylsulfonate aqueous solution is 1:150, adjust the pH to 5, stir for 8 hours, filter, wash with water, and finally dry and grind to obtain modified nano-SiO 2 ,stand-by;

[0024] (2) Step-by-step mixing: weigh phytic acid, pullulan, CaCl according to the above ratio 2 , Modified nano-SiO 2 , monoglyceride, tea polyphenols and water, first add monoglyceride into water and stir evenly, then add modified nano-SiO 2 , after ultrasonic di...

Embodiment 3

[0026] A kind of grape composite film preservative, is made up of the following components of mass percent: 0.12% phytic acid, 2.5% pullulan, 0.4% CaCl 2 , 0.02% modified nano-SiO 2 , 0.03% monoglyceride, 0.02% tea polyphenols, and the balance is water.

[0027] This grape composite coating preservative is obtained by the following method:

[0028] (1) Preparation of modified nano-SiO 2 : Nano-SiO2 Added to the sodium dodecylsulfonate aqueous solution with a mass percentage concentration of 0.5-0.7%, nano-SiO 2 The mass ratio to sodium dodecylsulfonate aqueous solution is 1:100~150, adjust the pH to 4~5, stir for 6~8h, filter, wash with water, and finally dry and grind to obtain modified nano-SiO 2 ,stand-by;

[0029] (2) Step-by-step mixing: weigh phytic acid, pullulan, CaCl according to the above ratio 2 , Modified nano-SiO 2 , monoglyceride, tea polyphenols and water, first add monoglyceride into water and stir evenly, then add modified nano-SiO 2 , after ultrasonic ...

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PUM

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Abstract

The invention discloses a grape composite coating antistaling agent. The grape composite coating antistaling agent is composed of, by mass, 0.1-0.15% of phytic acid, 2-3% of pullulan, 0.3-0.5% of CaCl2, 0.01-0.05% of modified nano SiO2, 0.02-0.05% of monoglyceride, 0.01-0.03% of tea polyphenol, and the balance water. The grape composite coating antistaling agent is reasonable and scientific in formula, simple in proportion, low in cost, safe and effective, and good in keeping grapes fresh. The grape storage quality can be improved through collaborative cooperation among the components of the antistaling agent, and the shelf life of the grapes is prolonged. The invention also discloses a preparation method of the grape compound coating antistaling agent. The method includes the following steps of 1. preparing the modified nano SiO2; 2. mixing step by step. The preparation method is simple in preparation steps, less in equipment investment, low in cost, and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of fresh-keeping of fruits and vegetables, in particular to a compound-coated fresh-keeping agent for grapes and a preparation method thereof. Background technique [0002] Grape is one of the four major fruits in the world. Its fruit ears are gorgeous, sweet and sour, which can not only satisfy people's sensory enjoyment, but also have high nutritional and health value, so it is deeply loved by people. However, grapes have a strong seasonality, and the time to market is relatively concentrated. In addition, the grapes are thin and juicy, and the tissues are delicate, sugary, and high in water. The shelf life of grapes is short under natural conditions, and they are prone to rot, threshing, and Dry stems and other phenomena, especially postharvest microbial diseases, such as gray mold and black rot, will greatly reduce the edible quality and commodity value of grapes. Therefore take effective measures to im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/16A23B7/154A23B7/157
Inventor 张刚
Owner HUNAN JIUYISHANFENGLI AGRI DEV CO LTD
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