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Nano pectin coating-containing preservative film special for citrus fruits and preparation method thereof

A fresh-keeping film, pectin technology, applied in pectin coatings, coatings, devices for coating liquid on surfaces, etc., can solve problems such as poor tensile strength, elongation at break and light transmittance, and achieve good bacteriostasis. Effect, strong antibacterial effect, prolong shelf life effect

Pending Publication Date: 2021-11-05
GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to prolong the shelf life of fruits and vegetables, an edible film made of pectin has appeared on the market. However, the thickness of the edible film is usually significantly larger than that of the traditional plastic wrap, and the tensile strength, elongation at break and light transmittance are all low. Worse than traditional plastic wrap

Method used

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  • Nano pectin coating-containing preservative film special for citrus fruits and preparation method thereof
  • Nano pectin coating-containing preservative film special for citrus fruits and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: a kind of citrus fruits special-purpose preservative film containing nano-pectin coating and preparation method thereof, citrus fruits special-purpose preservative film comprises polyethylene film 2 and the nano-pectin coating coated on polyethylene film 2 surfaces , the coating amount of nano-pectin coating is 3g / m 2 , the nano-pectin coating is only coated on the inner side of the polyethylene film 2, so that the nano-pectin coating can contact with citrus fruits.

[0031] Preferably, the nano-pectin coating is formed by curing a nano-pectin coating liquid. Based on 10kg, the nano-pectin coating solution consists of the following raw materials:

[0032] Pectin 3kg;

[0033] Sodium alginate 5kg;

[0034] Non-ionic surfactant 2kg.

[0035] The preparation method of pectin is as follows:

[0036] S1. Raw material pretreatment

[0037] Take fresh citrus peel (Wogan), chop it to a particle size of 2-3 mm, heat-treat it in boiling water for 5 minutes to ...

Embodiment 2

[0049] Embodiment 2: a kind of citrus fruits special-purpose preservative film containing nano-pectin coating and preparation method thereof, and the difference with embodiment 1 is that citrus fruits special-purpose preservative film comprises polyethylene film 2 and is coated on polyethylene film 2 Nano-pectin coating on the surface, the coating amount of nano-pectin coating is 1g / m 2 , the nano-pectin coating is only coated on the inner side of the polyethylene film 2, so that the nano-pectin coating can contact with citrus fruits.

[0050] Preferably, the nano-pectin coating is formed by curing a nano-pectin coating liquid. Based on 10kg, the nano-pectin coating solution consists of the following raw materials:

[0051] Pectin 5kg;

[0052] Sodium alginate 4kg;

[0053] Non-ionic surfactant 1kg.

[0054] The preparation method of pectin is as follows:

[0055] S1. Raw material pretreatment

[0056] Take fresh citrus peel (Wogan), chop it to a particle size of 2-3 mm,...

Embodiment 3

[0060] Embodiment 3: a kind of citrus fruit special-purpose preservative film containing nano-pectin coating and preparation method thereof, and the difference with embodiment 1 is that citrus fruit special-purpose preservative film comprises polyethylene film 2 and is coated on polyethylene film 2 Nano-pectin coating on the surface, the coating amount of nano-pectin coating is 7g / m 2 , the nano-pectin coating is only coated on the inner side of the polyethylene film 2, so that the nano-pectin coating can contact with citrus fruits.

[0061] Preferably, the nano-pectin coating is formed by curing a nano-pectin coating liquid. Based on 10kg, the nano-pectin coating solution consists of the following raw materials:

[0062] Pectin 4.5kg;

[0063] Sodium alginate 5kg;

[0064] Nonionic surfactant 0.5kg.

[0065] The preparation method of pectin is as follows:

[0066] S1. Raw material pretreatment

[0067] Take fresh citrus peel (Wogan), chop it to a particle size of 2-3 mm...

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Abstract

The invention discloses a nano pectin coating-containing preservative film special for citrus fruits and a preparation method thereof, and belongs to the technical field of preservative films. The nano pectin coating-containing preservative film special for citrus fruits comprises a polyethylene film and a nano pectin coating coating the polyethylene film, and the coating weight of the nano pectin coating is 1-7g / m < 2 >. The nano pectin coating is formed by curing a nano pectin coating solution. The preparation method of the preservative film special for citrus fruits comprises the step of smearing the nano pectin coating in the nano pectin coating-containing preservative film special for citrus fruits on the surface of the polyethylene film through a coating machine. The preservative film can inhibit the growth of bacteria and prolong the shelf life of citrus fruits, and has good tensile strength, good elongation at break and good light transmission.

Description

technical field [0001] The invention relates to the technical field of preservative film, more specifically, it relates to a special preservative film for citrus fruits containing a nano-pectin coating and a preparation method thereof. Background technique [0002] Pectin is a macromolecular acidic linear polysaccharide, which mainly exists in plant cell walls, and has many applications in food, medicine, and chemical industries. Pectin is a hydrophilic jelly, no odor, good emulsification, thickening, stabilization and gelation, and has antiseptic, antibacterial and other properties, it is an important food additive. Citrus peels contain a lot of pectin, which can turn waste into treasure if it can be utilized. [0003] In order to prolong the shelf life of fruits and vegetables, an edible film made of pectin has appeared on the market. However, the thickness of the edible film is usually significantly larger than that of the traditional plastic wrap, and the tensile streng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D105/04C09D105/06C08B37/06A23B7/16B05C1/08B05C9/10B05C9/14C08L23/06
CPCC08J7/0427C09D105/04C09D105/06B05C1/0826B05C1/0813B05C9/14B05C9/10A23B7/16C08B37/0048C08J2323/06C08J2405/04C08J2405/06C08L5/06C08L5/04
Inventor 李昌宝辛明零东宁唐杰易萍孙健唐雅园刘国明李杰民李丽何雪梅郑凤锦
Owner GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI
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