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Fruit and vegetable coating fresh-keeping material and preparation method thereof
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A coating technology for preservation of fruits and vegetables, applied in the fields of preservation of fruits and vegetables, protection of fruits/vegetables with a coating protective layer, food preservation, etc., can solve the problems of undisclosed fresh-keeping materials, achieve easy industrial production, and improve compatibility , cheap effect
Pending Publication Date: 2022-02-08
河北鲜达农业科技有限公司
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Problems solved by technology
However, fresh-keeping materials prepared by chitosan, shell po
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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preparation example Construction
[0040] A kind of preparation method of fruit and vegetable coating fresh-keeping material is:
[0041] (1) Dissolve shell powder in deionized water according to the formula, and stir evenly to obtain dispersion A;
[0042] (2) Add polyphenol compounds to the dispersion liquid A according to the recipe, stir for 3-6 hours, separate the solid and liquid, and the solid phase is the polyphenol-modified shell powder;
[0043] (3) dissolve chitosan in deionized water according to the formula, and stir evenly at room temperature to obtain solution B;
[0044] (4) Add the polyphenol-modified shell powder prepared in the step (2) into the obtained solution B, and mix evenly to obtain the fresh-keeping material coated with fruit and vegetables.
[0045] Further, the preparation method is carried out at room temperature.
[0046] The invention also provides an application of the coating fresh-keeping material for fruits and vegetables.
[0047] An application of a film-coated fresh-ke...
Embodiment 1
[0050] (1) Dissolve 2 parts of shell powder in 8 parts of deionized water, and stir evenly at room temperature to obtain a shell powder dispersion;
[0051] (2) Add 4 parts of tannic acid to the obtained shell powder dispersion, stir for 3 hours, and centrifuge, the solid phase is the shell powder modified by polyphenols;
[0052] (3) 10 parts of chitosan are dissolved in 40 parts of deionized water, and stirred evenly to obtain a chitosan solution;
[0053] (4) adding the polyphenol-modified shell powder obtained in the step (2) into the obtained chitosan solution, and mixing evenly to obtain the fresh-keeping material coated with a film for fruits and vegetables.
Embodiment 2
[0055] (1) Dissolving 4 parts of shell powder in 16 parts of deionized water, stirring evenly at room temperature to obtain a shell powder dispersion;
[0056] (2) Add 4 parts of chlorogenic acid to the obtained shell powder dispersion, stir for 6 hours, and centrifuge, the solid phase is the shell powder modified by polyphenols;
[0057] (3) 20 parts of chitosan are dissolved in 40 parts of deionized water, and stirred evenly to obtain a chitosan solution;
[0058] (4) adding the polyphenol-modified shell powder obtained in the step (2) into the obtained chitosan solution, and mixing evenly to obtain the fresh-keeping material coated with a film for fruits and vegetables.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention belongs to the technical field of food, and particularly relates to a fruit and vegetable coating fresh-keeping material as well as a preparation method and application thereof. The coating fresh-keeping material comprises the following components in parts by weight: 2-4 parts of shell powder, 4-8 parts of polyphenol compounds, 10-20 parts of chitosan and 50-70 parts of deionized water. The fruit and vegetable coating fresh-keeping material has the advantages that the raw materials are rich in source and low in price. According to the fruit and vegetable coating fresh-keeping material, the interaction between the shell powder and the chitosan can be improved, the compatibility of the shell powder and the chitosan is improved, and the enhancement effect of the shell powder on the chitosan is improved. The mechanical property, the water resistance, the oxidation resistance and the antibacterial property of the fruit and vegetable coating fresh-keeping material are obviously improved. The fruit and vegetable coating fresh-keeping material has the advantages that the raw materials are natural sources, are biodegradable and do not cause pollution.
Description
technical field [0001] The invention belongs to the technical field of food, and in particular relates to a fresh-keeping material coated with a film for fruits and vegetables, a preparation method and application thereof. Background technique [0002] Due to factors such as violent picking, collision, unsuitable storage environment, and microbial infection during the post-harvest handling and storage of fresh fruits and vegetables, the respiration and self-consumption of the fruit will be accelerated, the flavor and taste of the fruit will be affected, and even large-scale rot will occur. , causing serious economic losses. Therefore, the market and consumers have an urgent need for safe and efficient fruit and vegetable preservation technology. At present, there are many preservation methods for fruits, and the common ones include active oxygen preservation method, irradiation preservation, low temperature preservation, chemical preservative addition, and film preservation...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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