Fresh-keeping bag capable of visually detecting and removing residual pesticide on fruits and vegetables

Abstract

The utility model relates to a freshness protection package capable of visually detecting and removing residual pesticide on fruits and vegetables, which comprises a freshness protection package, a pesticide detection card and a braided rope, the braided rope is arranged at an opening of the freshness protection package and used for closing the freshness protection package, and the pesticide detection card is fixed on the braided rope and comprises a natural plant fiber fabric layer and a titanium dioxide layer. The titanium dioxide layers are arranged on the inner side and the outer side of the natural plant fiber fabric layer. The pesticide detection card comprises a residual pesticide washing sheet, a color developing layer and an alkali reaction layer. The fruit and vegetable pesticide residue detection device has the functions of corrosion prevention and fresh keeping, can visually detect pesticide residues on the surfaces of fruits and vegetables, can also remove pesticides, and is convenient and fast to use. The main raw materials adopted by the utility model are natural green environment-friendly raw materials, can be naturally degraded, cannot cause white pollution, and cannot harm human health.

Description

TECHNICAL FIELD

[0001] The utility model relates to fruit and vegetable packaging material field, concretely relates to a kind of fresh-keeping bag that can visual detection and remove fruit and vegetable residual pesticide. BACKGROUND

[0002] In the transportation and storage of fruits and vegetables, the fruits and vegetables are often damaged and rotted due to time and weather, causing economic losses to fruit farmers, fruit and vegetable vendors and consumers. Fresh-keeping bags are a kind of fruit and vegetable packaging material used in daily life, which can maintain the freshness of fruits and vegetables for a certain period of time and delay the decay of fruits and vegetables. However, the existing fruit and vegetable fresh-keeping bags on the market are mainly made of polyethylene, etc., and the product functions are single. Because of its non-degradable characteristics, it is easy to cause environmental problems such as white pollution.

[0003] With the improvement of people's living standards and the enhancement of health consciousness, when purchasing fruits and vegetables, people are more enthusiastic about pursuing "pure natural" and "not using pesticides". However, in the process of agricultural production, plant diseases and insect pests often occur. In order to ensure the yield and quality of fruits and vegetables, pesticides are often used for prevention and control in the planting process, which will cause pesticide residues on the surface of fruits and vegetables. The types of pesticide residues on fruits and vegetables mainly include organophosphorus and organochlorine. Long-term consumption of products with pesticide residues will cause great harm to human health. Ordinary consumers are difficult to judge whether there are pesticide residues on the surface of fruits and vegetables, and generally use water washing method to remove harmful substances such as pesticides on the surface of fruits and vegetables. However, this method cannot completely remove the pesticides. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to provide a fresh-keeping bag that can visually detect and remove pesticide residues on fruits and vegetables in view of the above problems and requirements.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model discloses a preservative bag that can visually detect and remove pesticide residues on fruits and vegetables, comprising a preservative bag, a pesticide detection card and a braided rope, the braided rope is arranged at the opening of the preservative bag and is used to close the opening of the preservative bag, and the pesticide detection card is fixed on the braided rope. The preservative bag comprises a natural plant fiber fabric layer and a titanium dioxide layer, and the titanium dioxide layer is arranged on both sides of the natural plant fiber fabric layer. Further, the pesticide detection card comprises a pesticide residue washing sheet, a color developing layer and an alkali reaction layer. The pesticide residue washing sheet comprises a hemp non-woven fabric, one side of the hemp non-woven fabric is fixed between the color developing layer and the alkali reaction layer, and the remaining part is exposed. Plant-based pesticide residue removing detergent layers are fixed on both surfaces of the exposed hemp non-woven fabric. The color developing layer comprises a filter paper sheet with a sodium hydroxide layer arranged on the inner side. The alkali reaction layer comprises a transparent plastic film with a ferric chloride layer arranged on the inner side. The filter paper sheet of the color developing layer and the transparent plastic film of the alkali reaction layer are connected by a pectin layer. The color developing layer and the alkali reaction layer are also connected to the hemp non-woven fabric by the pectin layer.

[0007] Further, the plant-based pesticide residue removing detergent layer uses coconut oil detergent.

[0008] After adopting the above technical scheme, the utility model has the following advantages compared with the prior art.

[0009] 1. Pesticide detection function: the pesticide detection card in the product can realize visual and rapid detection of pesticides. The detection principle is that organic phosphorus pesticides undergo alkaline hydrolysis under the condition of sodium hydroxide, and the product reacts with ferric chloride to change the color developing layer from brown red to white, thereby determining whether there is organic phosphorus pesticide in the sample. Through experimental detection, the solution containing organic phosphorus pesticide dropped on the pesticide detection card will make the color developing layer turn white, and the color developing layer will not change color when pure water is dropped on the detection card.

[0010] 2. Anticorrosion and preservation: the titanium dioxide in the preservative bag has the functions of photocatalytic degradation of ethylene and photocatalytic sterilization, which can remove ethylene in the environment and bacteria on the surface of fruits and vegetables, thereby delaying the decay and deterioration of fruits and vegetables. The titanium dioxide layer makes the preservative bag have water repellency, which can prevent water and other harmful substances from affecting the quality of fruits and vegetables.

[0011] 3. Pesticide removal function: the titanium dioxide on the preservative bag can photocatalytically degrade organic pesticides and quickly oxidize them, and then produce non-toxic and harmless substances such as water and carbon dioxide. The pesticide residue washing sheet with coconut oil detergent can be directly used for washing fruits and vegetables. The coconut oil detergent can promote the removal of pesticide residues and impurities on the surface of fruits and vegetables. Moreover, coconut oil is a natural plant extract and harmless to human health.

[0012] 4. Natural and environmentally friendly: The main raw materials used in this utility model are all natural, green and environmentally friendly materials that can be naturally degraded, will not cause white pollution to the environment, and will not harm human health.

[0013] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the appearance of the present utility model;

[0015] Fig. 2 This is a cross-sectional structural diagram of a food storage bag;

[0016] Fig. 3 This is a schematic diagram of the cross-sectional structure of a pesticide testing card.

[0017] 1. Titanium dioxide layer; 2. Natural plant fiber fabric layer; 3. Ferric chloride layer; 4. Filter paper; 5. Sodium hydroxide layer; 6. Pectin layer; 7. Plant-based pesticide residue remover; 8. Linen nonwoven fabric; 9. Transparent plastic film Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0019] like Figs. 1-3 As shown, a preservation bag capable of visually detecting and removing pesticide residues from fruits and vegetables includes a preservation bag, a pesticide detection card, and a woven rope. The woven rope is placed at the opening of the preservation bag for sealing the bag. The pesticide detection card is fixed to the woven rope. The preservation bag includes a natural plant fiber fabric layer 2 and a titanium dioxide layer 1. The titanium dioxide layer 1 is disposed on the inner and outer sides of the natural plant fiber fabric layer 2.

[0020] In one embodiment, the pesticide detection card includes a pesticide residue washing sheet, a color developing layer, and an alkaline reaction layer. The pesticide residue washing sheet includes a hemp nonwoven fabric 8, with one side of the hemp nonwoven fabric 8 fixed between the color developing layer and the alkaline reaction layer, and the remaining part exposed. Plant-based pesticide residue removal detergent layers 7 are fixed on both the upper and lower surfaces of the exposed hemp nonwoven fabric. The color developing layer includes a filter paper sheet 4 with a sodium hydroxide layer 5 on its inner surface. The alkaline reaction layer includes a transparent plastic film 9 with a ferric chloride layer 3 on its inner surface. The filter paper sheets of the color developing layer and the alkaline reaction layer are connected by a pectin layer 6. The color developing layer and the alkaline reaction layer are also connected to the hemp nonwoven fabric 8 by a pectin layer 6.

[0021] In one embodiment, the plant-based pesticide residue removal detergent layer 7 uses coconut oil detergent.

[0022] In use, the residual pesticide washing piece can be held by hand, the plant-based residual pesticide washing agent layer is used to scrub the fruits and vegetables (similar to the use of soap), when pesticide detection is performed, the fruits and vegetables can be washed with clean water, the water after washing the fruits and vegetables is dropped on the surface of the alkali reaction layer of the pesticide detection card, if there is residual pesticide, the pesticide will react with sodium hydroxide, the reacted liquid will penetrate the ferric chloride layer of the color developing layer below and become white, and residual pesticide detection is realized.

[0023] The fresh-keeping bag for visual detection and removal of residual pesticide of the utility model has wide application, can effectively prolong the storage time of fruits and vegetables, guarantees the freshness of fruits and vegetables, can also play a role in detection and removal of pesticide, guarantees food safety, is applied to the transportation and storage of fruits and vegetables of vendors, and is used for storing fruits and vegetables and detecting pesticide residues on the surface of fruits and vegetables at home.

[0024] The above is an example of the best embodiment of the utility model, wherein the parts not described in detail are common knowledge of those skilled in the art. The protection scope of the utility model is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A preservative bag capable of visual detection and removal of pesticide residues on fruits and vegetables, characterized in that, The application relates to a fresh-keeping bag, a pesticide detection card and a braided rope, the braided rope is arranged at an opening of the fresh-keeping bag and is used for closing the fresh-keeping bag, the pesticide detection card is fixed on the braided rope, the fresh-keeping bag comprises a natural plant fiber fabric layer (2) and a titanium dioxide layer (1), and the titanium dioxide layer (1) is arranged on both inner and outer sides of the natural plant fiber fabric layer (2).

2. The preservative bag capable of visually detecting and removing pesticide residues on fruits and vegetables according to claim 1, characterized in that, The pesticide detection card comprises a residual pesticide washing sheet, a color developing layer and an alkali reaction layer, the residual pesticide washing sheet comprises a hemp non-woven fabric (8), one side of the hemp non-woven fabric (8) is fixed between the color developing layer and the alkali reaction layer, and the remaining part is exposed outside, the upper and lower surfaces of the exposed hemp non-woven fabric are both fixed with a plant-based residual pesticide removing detergent layer (7), the color developing layer comprises a filter paper sheet (4) provided with a sodium hydroxide layer (5) on an inner side; the alkali reaction layer comprises a transparent plastic film (9) provided with a ferric chloride layer (3) on an inner side, the filter paper sheet of the color developing layer and the filter paper sheet of the alkali reaction layer are connected through a pectin layer (6), and the color developing layer and the alkali reaction layer are also connected with the hemp non-woven fabric (8) through the pectin layer (6).

3. The preservative bag capable of visually detecting and removing pesticide residues on fruits and vegetables according to claim 2, characterized in that, The plant-based residual pesticide removing detergent layer (7) adopts a coconut oil detergent.

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