Green tea fresh-keeping nano packaging wrapper and use thereof

A packaging material and nano-technology, applied in the field of high-quality green tea nano-packaging fresh-keeping materials, can solve the problems of poor fresh-keeping effect, poor packaging barrier performance, and no reasonable preservation technology, and achieve the effect of improving fresh-keeping quality and high fresh-keeping effect

Inactive Publication Date: 2008-11-26
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country's green tea is famous all over the world for its wide resources, high yield, good quality, especially rich in trace elements. It has become the most vital and popular civilized healthy drink among the three major beverages in the world, but its market competitiveness has been greatly affected by the lack of reasonable preservation technology so far.
my country's

Method used

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  • Green tea fresh-keeping nano packaging wrapper and use thereof
  • Green tea fresh-keeping nano packaging wrapper and use thereof
  • Green tea fresh-keeping nano packaging wrapper and use thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] 1.2 Preparation process of nano-masterbatch

[0029] According to the mass ratio, the nano powders (D, HTB, TiO 2 1. TiO 2 2) 30%, polyethylene plastic 56%, coupling agent KH-570 (γ-methacryloxypropyltrimethoxysilane, CAS No. 2530-85-0) 10%, antioxidant 2%, paraffin 2%, mixed by a high-speed mixer (3500 rpm), kneaded by a twin-screw plasticizer (SHJ-50 / 500-45-36), extruded and cooled for 2 minutes, and cut to obtain nano masterbatches D, HTB, TiO 2 R and TiO 2 a.

[0030] 2 Preparation of nano-plastic fresh-keeping bags:

[0031] 2.1 Instrument

[0032] Two-layer co-extrusion 1m film blowing machine Zhejiang Jiaqi Packaging Machinery Co., Ltd.

[0033] Corona treatment machine SDCD9 Zhejiang Mingli Electric Appliance Factory

[0034] Polyethylene aluminized film machine Zhejiang Jiaqi Packaging Machinery Co., Ltd.

[0035] Microcomputer Control High Speed ​​Bag Making Machine FDB300W Zhejiang Jiaqi Packaging Machinery Co., Ltd.

[0036] 2.2 Blown film process ...

Embodiment 1

[0049] Example 1: Application of nano-packaging materials in Biluochun

[0050] (1) Tea preparation The fresh leaves are spread, greened, cooled, dried, air-selected, picked and picked to obtain finished products.

[0051] (2) Packaging operation Every 50 grams of Biluochun is packaged with the nano-packaging material made by the present invention and stored at normal temperature. The fresh-keeping quality of Biluochun can be significantly improved by using the nano-packaging material of the invention. Its physical and chemical qualities such as moisture, free amino acids, tea polyphenols, chlorophyll, vitamin C, and sensory qualities are significantly better than those of ordinary packaging materials, such as figure 1 shown. During the fresh-keeping period, the water content of Biluochun increased, and the water content of Biluochun in nano-package was significantly lower than that in ordinary packaging. After 300 days of storage, the water content of Biluochun in nano-packag...

Embodiment 2

[0052] Example 2: Nano packaging material applied to Qingfeng

[0053] (1) Tea preparation The fresh leaves are spread, greened, cooled, dried, winnowed, sorted, and finished products are obtained.

[0054] (2) Packaging operation Every 50 grams of Qingfeng adopts the nano-packaging material of the present invention to pack and preserve at normal temperature. Using the nano packaging material of the invention can significantly improve the fresh-keeping quality of Qingfeng. Its physical and chemical qualities such as moisture, free amino acids, tea polyphenols, chlorophyll, vitamin C, and sensory qualities are significantly better than those of ordinary packaging materials, such as figure 2 shown. During the fresh-keeping period, the moisture content of green peaks increased, and the moisture content of green peaks with nano-packaging was significantly lower than that of ordinary packaging. After storage for 300 days, the moisture content of green peaks with nano-packaging w...

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PUM

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Abstract

The invention relates to a nano preservation packing material for good-quality green tea and an application thereof, which pertains to the technical field of agricultural product storing and processing. According to mass ratio, 30 percent of nano-powder, 56 percent of polyvinyl plastics, 10 percent of silane coupling agent, 2 percent of paraffine and 2 percent of antioxidant are taken, stirred for 0.5 hour at a high speed, kneaded in a plastic extruding machine and then extruded and diced into grains, thus respectively obtaining grains D, HTB, TiO2R and TiO2A. 30kg of polyvinyl plastic grains is fetched and fully mixed with 5kg of grains for 0.5 to 1 hour, blasted into a thin film, plated with an aluminium film and made into a packaging bag of 30cm*20cm, thus manufacturing the nano packing material. The nano package is used for packing the green tea, which can effectively isolate oxygen and ultraviolet radiation from the tea, prevent the tea from going mouldy and losing quality caused by oxidation; meanwhile, the transmissivity of water is remarkably lowered, thus being capable of inhibiting the decomposition of chlorophyll, improving the quality of the green tea and having wide market prospect.

Description

1. Technical field [0001] The invention relates to a high-quality green tea nano-packaging fresh-keeping material and an application thereof, belonging to the technical field of storage and processing of agricultural products. 2. Background technology [0002] my country's green tea is famous all over the world for its wide resources, high yield, good quality, especially rich in trace elements. function, it has become the most vital and the most popular civilized healthy drink among the three major beverages in the world, but it has greatly affected its market competitiveness because of the lack of reasonable preservation technology so far. my country's green tea storage and packaging technology is relatively backward. Compared with tea packaging in Japan and Taiwan and other domestic food packaging, it is relatively simple and has poor fresh-keeping effect. Judging from the storage and packaging methods of green tea on the market, most small packages are packed in composite...

Claims

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Application Information

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IPC IPC(8): B65D65/40B65D81/24B65D30/02A23L3/358A23L3/3463B32B15/085B32B27/20C08J3/22C08L23/06C08K13/02C08K3/34C08K3/32C08K3/22B29C55/28B29K23/00B29L9/00B29L7/00
Inventor 胡秋辉章敏杨方美安辛欣郁志芳辛志宏赵立艳
Owner NANJING AGRICULTURAL UNIVERSITY
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