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Laminated paper for fruit and vegetable fresh keeping

A fruit and vegetable preservation, interlayer paper technology, applied in the direction of fruit and vegetable preservation, special paper, papermaking, etc., can solve the problems of high essential oil content, uneven diffusion of essential oil, single effect, etc., to enhance the adsorption capacity, the preservation effect is better and richer The effect of the pore structure

Active Publication Date: 2021-03-26
浙江杭化新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A common material capable of controlled release of essential oils is essential oil microcapsules, which have the characteristics of slow release and long-term antibacterial properties. They are usually used in bags and single packages, but individual packaging of essential oil microcapsules will cause consumers to be concerned. Concerns about fresh-keeping reagents will also lead to uneven diffusion of essential oils, and problems such as high local essential oil content, which will affect the commercial performance of fruits and vegetables
In addition, relying on a single essential oil microcapsule to preserve the freshness of fruits and vegetables has a relatively single effect.

Method used

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  • Laminated paper for fruit and vegetable fresh keeping
  • Laminated paper for fruit and vegetable fresh keeping
  • Laminated paper for fruit and vegetable fresh keeping

Examples

Experimental program
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Effect test

preparation example Construction

[0060] Preparation of silver-loaded mesoporous silica powder: immerse nano-scale mesoporous silica powder in 10-20wt% silver nitrate solution at a solid-to-liquid ratio of 60-80g / 100mL in a dark environment, take out after immersion drying under light-shielding conditions, and then anaerobically calcining the dried product at 300-400° C. for 5-7 hours under light-shielding conditions to obtain silver-loaded mesoporous silicon dioxide powder.

[0061] Mix the hybrid polylactic acid particles, silver-loaded mesoporous silica powder, and nanocellulose according to the mass ratio (95-97):(2-4):(0.5-1.5), add them to the injection molding machine, heat and press to melt , while passing carbon dioxide into the injection molding machine to fully blend with the hybrid polylactic acid melt, the volume-to-mass ratio of carbon dioxide to hybrid polylactic acid particles is 100-500mL / kg; -80% carbon dioxide is introduced at a rate of 30-40mL / min, and the remaining carbon dioxide is introd...

Embodiment 1

[0062] Embodiment 1 (peach fruits such as juicy peach)

[0063]The interlayer paper of this embodiment can be used for normal temperature storage of peach fruits such as peaches, and includes a barrier layer at the base layer, a microcapsule foam layer at the middle layer, and a covering layer at the upper layer; the barrier layer and the covering layer are made of protective paper , the microcapsule foam layer is a polylactic acid foam material containing essential oil microcapsules (accounting for 10 wt% of the polylactic acid foam material).

[0064] Wherein, the protective paper of the barrier layer is kraft paper, with an air permeability of 0.1 μm / (Pa·s), a thickness of 0.01 mm, and a basis weight of 120 g / m 2 The protective paper of the covering layer is filter paper, the air permeability is 800 μm / (Pa·s), the thickness is 0.2mm, and the quantitative value is 80g / m 2 The thickness of the microcapsule foam layer is 0.1mm, the essential oil is thyme essential oil, the co...

Embodiment 2

[0071] Embodiment 2 (peach fruits such as juicy peach)

[0072] The interlayer paper of this embodiment can be used for normal temperature storage of peach fruits such as peaches, and includes a barrier layer at the base layer, a microcapsule foam layer at the middle layer, and a covering layer at the upper layer; the barrier layer and the covering layer are made of protective paper , the microcapsule foam layer is a polylactic acid foam material containing essential oil microcapsules (accounting for 10 wt% of the polylactic acid foam material).

[0073] Wherein, the air permeability of the protective paper of the barrier layer is 0.05 μm / (Pa·s), the thickness is 0.1 mm, and the basis weight is 150 g / m 2 The air permeability of the protective paper of the covering layer is 5000 μm / (Pa·s), the thickness is 0.08mm, and the quantitative value is 75g / m 2 The thickness of the microcapsule foam layer is 0.05mm, the essential oil is thyme essential oil, the content is 34wt% of the e...

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Abstract

The invention relates to the technical field of fruit and vegetable fresh keeping, and discloses laminated paper for fruit and vegetable fresh keeping. The laminated paper comprises a barrier layer positioned on a base layer, a microcapsule foam layer positioned on a middle layer and a covering layer positioned on an upper layer. The barrier layer and the covering layer are made of protective paper, the air permeability of the barrier layer is higher than that of the covering layer, and the microcapsule foam layer is a polylactic acid foam material containing essential oil microcapsules. According to the invention, the essential oil microcapsules are combined with the upper paper and the lower paper with different air permeability for use, so that the defect of use of the essential oil microcapsules alone is improved, and the effect of directional controlled release of essential oil is achieved. Besides, the interlayer is made of the polylactic acid foam material, so that the effect ofbuffering and protecting fruits and vegetables can be achieved, and the fresh-keeping effect is also achieved.

Description

technical field [0001] The invention relates to the technical field of fresh-keeping of fruits and vegetables, in particular to an interlayer paper used for fresh-keeping of fruits and vegetables. Background technique [0002] China's vast territory, rich resources and changeable climate, the vast territory and unique climate have prompted different regions to produce fruits and vegetables with unique characteristics and flavors. In recent years, the fruit and vegetable planting structure has been continuously optimized, and the production model has been continuously adjusted. Different varieties of fruits and vegetables have achieved staggered production and supply and international and domestic circulation. However, according to related reports, the corruption rate of fruits and vegetables in my country is as high as 25%, with an annual loss of about 80 million tons and an economic loss of 80 billion yuan. The development of green and efficient fresh-keeping methods to red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/152B32B29/00B32B3/08D21H27/10D21H27/30C08L67/04C08L1/02C08K9/12C08K3/08C08J9/12B65D65/40
CPCA23B7/152B32B29/00B32B29/005B32B3/08D21H27/10D21H27/30C08J9/122C08J9/0061C08J9/009B65D65/40B32B2255/12B32B2255/26B32B2307/724B32B2410/00C08J2203/06C08J2367/04C08J2401/02C08K9/12C08K3/08Y02W90/10
Inventor 尚怡黄小雷王立军姚献平姚向荣
Owner 浙江杭化新材料科技有限公司
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