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A preparation method of Pleurotus ostreatus preservative film masterbatch containing rare earth complex

A technology of rare earth complexes and rare earth compounds, which is applied in the field of preparation of oyster mushroom fresh-keeping film master batches, can solve the problems of poor fresh-keeping effect and high cost of flat mushroom fresh-keeping packaging, and achieve enhanced antibacterial and fresh-keeping effects, material safety, and abundant resources. Effect

Active Publication Date: 2017-11-07
QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of poor fresh-keeping effect and high cost of the existing fresh-keeping packaging of oyster mushrooms

Method used

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  • A preparation method of Pleurotus ostreatus preservative film masterbatch containing rare earth complex
  • A preparation method of Pleurotus ostreatus preservative film masterbatch containing rare earth complex
  • A preparation method of Pleurotus ostreatus preservative film masterbatch containing rare earth complex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 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, 0.30kg of diatomaceous earth, 0.10kg of aluminate, and 0.11kg of sodium stearate.

[0038]Masterbatch is prepared according to the following steps:

[0039] 1. Preparation of rare earth complexes

[0040] (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 1h, add the viscous liquid obtained from the reaction to 150 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.

[0041] (2) According to the molar ratio of lanthanum, yttrium, neodymium and cerium ions as 2.90: 0.50 : 1.25 : 1.00, weigh 2 kg of lanthanum nitrate, yttrium nitrate, neodymium nit...

Embodiment 2

[0048] The components of the masterbatch consist of 6.03kg of linear low-density polyethylene, 1.5kg of tourmaline powder, 2.0kg of rare earth complexes, 0.25kg of diatomaceous earth, 0.09kg of aluminate, and 0.13kg of sodium stearate.

[0049] Masterbatch is prepared according to the following steps:

[0050] 1. Preparation of rare earth complexes

[0051] (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 1h, add the viscous liquid obtained from the reaction to 150 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.

[0052] (2) According to the molar ratio of lanthanum, yttrium, neodymium and cerium ions as 2.90: 0.50 : 1.25 : 1.00, weigh 2 kg of lanthanum nitrate, yttrium nitrate, neodymium ni...

Embodiment 3

[0059] The components of the masterbatch consist of 6.04kg of linear low-density polyethylene, 1.3kg of tourmaline powder, 2.2kg of rare earth complexes, 0.25kg of diatomaceous earth, 0.09kg of aluminate, and 0.12kg of sodium stearate.

[0060] Masterbatch is prepared according to the following steps:

[0061] 1. Preparation of rare earth complexes

[0062] (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 1h, add the viscous liquid obtained from the reaction to 150 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.

[0063] (2) According to the molar ratio of lanthanum, yttrium, neodymium and cerium ions as 2.90: 0.50 : 1.25 : 1.00, weigh 2 kg of lanthanum nitrate, yttrium nitrate, neodymium ni...

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Abstract

The invention relates to a preparation method of oyster mushroom fresh-keeping film master batches containing a rare earth complex. The method comprises the following steps: dissolving plant polysaccharide into an acetic acid solution, adding methanol and acetic anhydride, and adding a product to ethanol after reaction to obtain an acetylated plant polysaccharide solution; weighing compounds of lanthanum, yttrium, neodymium and cerium for mixing, and adding the mixture to distilled water to obtain a rare-earth compound mixed water solution; dropwise adding the rare-earth compound mixed water solution to the acetylated plant polysaccharide solution; filtering, washing and drying the product, and grinding the product into powder; putting the rare earth complex and diatomite into a stirrer, and adding aluminic acid ester to obtain a raw material I; putting tourmaline powder into a high-speed kneading machine, and adding sodium stearate to form a raw material II; and mixing the raw material II, the raw material I and LLDPE, and extruding and dicing in a twin-screw extruder to form the master patches. By adopting the tourmaline powder, rare earth and natural plant polysaccharide, the cost can be effectively reduced; the master batches are free of harm to a human body and have antibacterial fresh-keeping functions; and the antibacterial fresh-keeping effects can be effectively strengthened in manners of modification, compounding and the like.

Description

technical field [0001] The invention relates to a preparation method of a functional plastic film masterbatch, in particular to a preparation method of an oyster mushroom fresh-keeping film masterbatch containing a rare earth complex. Background technique [0002] Pleurotus ostreatus scientific name (Pleurtus otreatus). Pleurotus ostreatus is rich in nutrition, rich in amino acids, and has a complete range of amino acids. The active polysaccharides and active proteins contained in oyster mushrooms have good effects on enhancing human immune function and preventing "three highs". Simultaneously, because fat content is extremely low in the flat mushroom, therefore, be the ideal food of cardiovascular and cerebrovascular disease and obesity patient. The tissue water content of Pleurotus ostreatus is relatively high, and the water content of newly harvested Pleurotus ostreatus can generally reach more than 90%. Because the tissue is crisp and tender, and there is no protective ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L5/08C08K9/10C08K3/34C08K9/04C08K3/38C08B37/08C08J3/22
CPCC08B37/003C08J3/226C08J2323/08C08J2423/08C08L23/0815C08L2203/16C08L2205/025C08L2205/03C08L5/08C08K9/10C08K3/34C08K9/04C08K2003/387
Inventor 游瑞云黄雅卿杨裕金吴长机
Owner QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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