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Preparation method of rare-earth-complex-containing juicy peach preservative film master batch

The technology of rare earth complex and rare earth compound is applied in the field of preparation of peach fresh-keeping film masterbatch, which can solve problems such as unsolved problems, and achieve the effect of strengthening antibacterial fresh-keeping effect, material safety and abundant resources.

Inactive Publication Date: 2016-05-25
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual production of some new preservatives, there are still many problems that have not been resolved

Method used

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  • Preparation method of rare-earth-complex-containing juicy peach preservative film master batch
  • Preparation method of rare-earth-complex-containing juicy peach preservative film master batch
  • Preparation method of rare-earth-complex-containing juicy peach preservative film master batch

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The components of the masterbatch consist of 5.89kg of linear low-density polyethylene, 1.2kg of tourmaline powder, 2.4kg of rare earth complexes, 0.3kg of diatomaceous earth, 0.11kg of oleic acid amide, and 0.10kg of sodium stearate.

[0035] Masterbatch is prepared according to the following steps:

[0036] 1. Preparation of rare earth complexes

[0037] (1) Dissolve 2kg chitin in 60L acetic acid solution, stir evenly, add 80L methanol, the solution is no longer viscous, add 1L acetic anhydride, react at 30°C for 1 hour, then add the viscous liquid obtained from the reaction to 150L In ethanol, a precipitate is formed, the solid is filtered out, washed three times with absolute ethanol, dissolved in acetic acid solution, and the insoluble matter is filtered off to obtain an acetylated chitosan solution.

[0038] (2) Weigh a total of 2kg of lanthanum nitrate, yttrium nitrate, neodymium nitrate, and cerium nitrate according to the molar ratio of lanthanum, yttrium, neo...

Embodiment 2

[0045] The components of the masterbatch consist of 6.36kg of linear low-density polyethylene, 1.0kg of tourmaline powder, 2.2kg of rare earth complexes, 0.25kg of diatomaceous earth, 0.11kg of oleic acid amide, and 0.08kg of sodium stearate.

[0046] Masterbatch is prepared according to the following steps:

[0047] 1. Preparation of rare earth complexes

[0048] (1) Dissolve 2kg chitin in 60L acetic acid solution, stir evenly, add 80L methanol, the solution is no longer viscous, add 1L acetic anhydride, react at 30°C for 1 hour, then add the viscous liquid obtained from the reaction to 150L In ethanol, a precipitate is formed, the solid is filtered out, washed three times with absolute ethanol, dissolved in acetic acid solution, and the insoluble matter is filtered off to obtain an acetylated chitosan solution.

[0049] (2) Weigh a total of 2kg of lanthanum nitrate, yttrium nitrate, neodymium nitrate, and cerium nitrate according to the molar ratio of lanthanum, yttrium, ne...

Embodiment 3

[0056] The components of the masterbatch consist of 5.98kg of linear low-density polyethylene, 1.1kg of tourmaline powder, 2.4kg of rare earth complexes, 0.30kg of diatomaceous earth, 0.12kg of oleic acid amide, and 0.10kg of sodium stearate.

[0057] Masterbatch is prepared according to the following steps:

[0058] 1. Preparation of rare earth complexes

[0059] (1) Dissolve 2kg chitin in 60L acetic acid solution, stir evenly, add 80L methanol, the solution is no longer viscous, add 1L acetic anhydride, react at 30°C for 1 hour, then add the viscous liquid obtained from the reaction to 150L In ethanol, a precipitate is formed, the solid is filtered out, washed three times with absolute ethanol, dissolved in acetic acid solution, and the insoluble matter is filtered off to obtain an acetylated chitosan solution.

[0060] (2) Weigh a total of 2kg of lanthanum nitrate, yttrium nitrate, neodymium nitrate, and cerium nitrate according to the molar ratio of lanthanum, yttrium, ne...

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Abstract

The invention relates to a preparation method of a rare-earth-complex-containing juicy peach preservative film master batch. The preparation method comprises the following steps: by using LLDPE (linear low-density polyethylene) as a carrier resin, adding tourmaline powder, a rare-earth complex, diatomite, oleamide and sodium stearate, and carrying out coating dispersion, interface modification, material mixing and extrusion granulation to obtain the master batch. The rare-earth complex is characterized in that the mole ratio of the lanthanum, yttrium, samarium and cerium ions is (2.85<=w<=3.00):(0.45<=x<=0.50):(0.95<=y<=1.05):(1.25<=z<=1.35). The master batch prepared by the method is added into the LLDPE resin according to the proportion of 6-8%, and the mixture is blown into a film; and when being used for juicy peach preservative packaging, the film can inhibit the respiratory intensity and the surface microbe growth in the storage process, so that the preservation period under normal temperature conditions can be prolonged to 5-8 days.

Description

technical field [0001] The invention relates to a preparation method of a functional plastic film master batch, in particular to a preparation method of a peach fresh-keeping film master batch containing a rare earth complex. Background technique [0002] Peach (Prunus persica) is sweet and nutritious. It contains a variety of vitamins, trace elements, sugars and organic acids. It can maintain the normal physiological functions of the human body and ensure health, so it is favored by people. Due to problems such as rot and browning in the postharvest storage and transportation of peaches in my country, it has brought great difficulties to the development of the peach industry. Abnormal changes in enzyme activity during storage will directly lead to abnormal softening of peach fruits, flocculation and browning. Peach is a climacteric fruit, and there is an after-ripening process. During storage, there were 2 respiratory peaks and 1 ethylene release peak. After the first re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L5/08C08K13/06C08K9/10C08K3/38C08K3/34C08K5/20C08K5/098C08K3/28C08J3/22B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08J3/226C08J2423/08C08K2201/003C08L23/0815C08L2203/16C08L5/08C08K13/06C08K9/10C08K2003/387C08K3/34C08K5/20C08K3/28
Inventor 陈潇川游瑞云陈彩珍陈慧杨裕金高宇菥
Owner FUJIAN NORMAL UNIV