CN115028902A - Environment-friendly recyclable tableware with vegetable protein as raw material and preparation method thereof - Google Patents

Abstract

The invention discloses an environment-friendly recyclable tableware using vegetable protein as a raw material and a preparation method thereof, belonging to the field of environment-friendly tableware. According to the proportion of raw materials: 7-10 parts of corn yellow powder, 3-4 parts of soybean protein, 4-6 parts of starch, 1-3 parts of sodium carboxymethyl cellulose, 1-2 parts of edible gelatin, add mulberry leaf extract and Appropriate amount of water. The microwave power is 200-1000W, and the microwave time is 1-5min. After treatment, put it in the abrasive tool, press and shape, take it out and dry, and apply 5%-10% zein and ethyl cellulose waterproof coating on the surface of the tableware. Put the tableware in the ultraviolet disinfection box to sterilize. This tableware does not contain any plastics, and uses the extracts of natural substances or the by-products of agricultural product processing as the main raw materials, which is a virtuous circle. The recovered product can provide animals with high content of protein and polysaccharide after being crushed, which is more conducive to its utilization as animal feed.

Description

A kind of environmentally friendly recyclable tableware using vegetable protein as raw material and preparation method thereof

technical field

The invention belongs to the field of environment-friendly tableware, in particular to an environment-friendly recyclable tableware using vegetable protein as a raw material and a preparation method thereof.

Background technique

With the popularization of fast food eating habits, disposable tableware has emerged from time to time, which brings convenience and efficiency, but also has serious ecological pollution, hidden dangers of health and safety and other disadvantages. The main material of disposable tableware is polystyrene, which is difficult to reuse after recycling. It is usually treated by incineration, which will generate a large amount of harmful gases, form air pollution, or directly or indirectly cause irreversible acute and chronic harm to organisms. There are also treatment methods that use deep burial, which is difficult to be degraded by microorganisms, harms the growth of crops, damages the soil structure, and brings great pressure to the environment. Moreover, the disposable tableware will release toxic and harmful substances under the condition of high temperature use, and the long-term use of such tableware will have adverse effects on human health. Therefore, a new type of environmentally friendly degradable tableware that is harmless to health came into being.

At present, some environmentally friendly tableware on the market, including PE laminated paperboard, pulp molding, plant straw husk molding, degradable plastic, starch biodegradable and other tableware materials or products, are almost neglecting the other and cannot meet the requirements of safety, Hygiene, convenience, environmental protection and other advantages. Especially with the increasing voice of environmental protection, the development and application of tableware products with environmental protection significance can be described as urgent. Therefore, there is an urgent need to develop a new type of environmentally friendly disposable tableware and food packaging materials that can be recycled as animal feed. Using the inherent characteristics of corn yellow powder, soybean protein, potato starch, mulberry leaf extract, etc., they are combined with other edible additives in a certain proportion, and after stirring, heating and pressure setting, they are refined by applying a hydrophobic coating. The hydrophobic coating utilizes the hydrophobic properties of zein to achieve the effect of isolation, and at the same time, ethyl cellulose, which can be used as an animal feed additive, is added to the coating to further improve the mechanical properties and barrier properties of the hydrophobic coating. This tableware does not contain any plastics, and uses the extracts of natural substances or the by-products of agricultural product processing as the main raw materials, which is a virtuous circle. Due to its rich nutritional value, the recovered product can be directly used as animal feed after being crushed. It has high social value and can take into account the two important issues of environmental protection and health.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a kind of environmentally friendly recyclable tableware with vegetable protein as raw material and preparation method thereof, the environmental protection tableware with vegetable protein as raw material provided by the present invention, the raw material mainly comes from agricultural product processing by-products (corn yellow powder and soybean meal) protein), which has a wide range of sources, low cost, and is harmless to the human body, and the mulberry leaf extract added has high nutritional value, and the coating used is the combination of zein and ethyl cellulose to improve The waterproof effect of the coating is achieved, and it can be recycled as animal feed after use. The production and use of the tableware not only reduces the production cost, but also prevents the production of toxic and harmful substances under high temperature, and can be recycled as animal feed after use to realize green circulation.

In order to achieve the above purpose of the invention, the present invention is an environmentally friendly and recyclable tableware using vegetable protein as a raw material. 1-3 parts of sodium cellulose, 1-2 parts of edible gelatin, add mulberry leaf extract and appropriate amount of water.

Preferably, the mulberry leaf extract is extracted by water extraction, and the addition amount is 400-850 mL/kg of the quality of the above-mentioned raw materials, and the rest is supplemented to 850 mL/kg with water.

The above-mentioned preparation method of the environmentally-friendly recyclable tableware with vegetable protein as raw material is carried out according to the following steps: (1) firstly, pulverize the corn yellow powder and soybean protein in the raw material, pass through a 120 mesh sieve, and sequentially order the remaining raw materials according to the above-mentioned weights. Put into a container, stir, add mulberry leaf extract and water, stir well. (2) After the microwave power is 200-1000W and the microwave time is 1-5min, it is put into an abrasive tool, and it is taken out and dried after being pressed and formed. (3) Apply a waterproof coating of 5% to 10% (mass percentage) of zein and ethyl cellulose (the ratio of the two is 9:1 to 5:5) on the surface of the tableware. (4) Put the tableware in the ultraviolet disinfection box to sterilize.

The beneficial effects of the invention are as follows: the use of raw materials is environmentally friendly and healthy, the cost of raw materials is low, the processing method is scientific and simple, and after being recovered as feed, the rich protein, especially the ratio of corn protein and soybean protein, realizes the complementary effect of protein , and a certain amount of starch is added, so that the content of polysaccharide and protein is high, wherein the content of polysaccharide is 42.38%-45.11%, and the content of protein is 38.21%-41.80%. The addition of the mulberry leaf extract also provides a small amount of active substances flavonoids and polyphenols, which is more conducive to improving the production and growth performance of animals as animal feed, and has high social value.

The technical solutions of the present invention will be described in further detail below through examples.

Detailed ways

Terms used in the present invention generally have the meanings commonly understood by those of ordinary skill in the art unless otherwise specified. The present invention will be described in further detail below in conjunction with specific embodiments and with reference to data. It should be understood that these embodiments are only to further illustrate the present invention, and should not be construed as limiting the protection scope of the present invention, and technical engineers in this field can make some non-essential improvements and adjustments to the present invention according to the content of the above invention.

In the following examples, various procedures and methods not described in detail are conventional methods well known in the art. The source and trade name of the reagents used, as well as those necessary to list their components, are indicated when they appear for the first time, and the same reagents used thereafter will be the same as those indicated for the first time unless otherwise specified. The present invention is an example, not a limitation to the embodiment. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description, and it is not necessary and impossible to list all the implementations here, and it is obvious that it is derived from this. Variations or modifications are still within the scope of the present invention.

The model of the microwave equipment in this embodiment is: NN-DS59JB, which was purchased from Shanghai Panasonic Microwave Oven Co., Ltd.

The preparation process of the mulberry leaf extract in this embodiment is as follows: take a certain amount of mulberry leaf powder (over 60 meshes) to prepare the material concentration of 50g/L, add 5% cellulase (enzyme-to-base ratio), and extract after 3h, 12000r /min centrifugation, take the supernatant to obtain the mulberry leaf extract.

Example 1

An environmentally friendly recyclable tableware using vegetable protein as a raw material and a preparation method thereof. The proportions of the raw materials are: 7 parts of corn yellow powder, 3 parts of soybean protein, 4 parts of starch, 1 part of sodium carboxymethyl cellulose, and 1 part of edible gelatin . The addition amount of the mulberry leaf extract is added at 700 mL/kg of the above-mentioned raw material quality, and 150 mL/kg of water is added.

First, crush the corn yellow powder and soybean protein in the raw materials, pass through a 120-mesh sieve, put the rest of the raw materials into a container in sequence according to the above weight, stir, add mulberry leaf extract and water, and stir evenly. After the microwave power was 200 W and the microwave time was 5 min, it was put into an abrasive tool, pressed and formed, and then taken out and dried. Apply 5% (mass percent) zein and ethyl cellulose (9:1) waterproof coating on the tableware surface. Put the tableware in the ultraviolet disinfection box to sterilize.

The surface of the obtained tableware is smooth and can be formed, and the nutrients in the dry matter are determined after crushing: the polysaccharide content is 44.42%, the protein content is 41.80%, and the addition of the mulberry leaf extract not only improves the polysaccharide and protein content, but also provides A certain content of polyphenols (1.04%) and flavonoids (0.4%) can improve its biological functions such as anti-oxidation, and these nutrients are beneficial to the recycling of the tableware as a high-protein nutritional feed.

Example 2

An environmentally friendly recyclable tableware using vegetable protein as a raw material and a preparation method thereof. The proportions of the raw materials are: 10 parts of corn yellow powder, 4 parts of soybean protein, 6 parts of starch, 3 parts of sodium carboxymethyl cellulose, and 2 parts of edible gelatin . The addition amount of the mulberry leaf extract is added at 850 mL/kg of the above-mentioned raw material quality.

First, crush the corn yellow powder and soybean protein in the raw materials, pass through a 120-mesh sieve, put the rest of the raw materials into a container in sequence according to the above weight, stir, add mulberry leaf extract and water, and stir evenly. After the microwave power was 1000 W and the microwave time was 1 min, it was put into an abrasive tool, pressed and formed, and then taken out to dry. Apply 10% (mass percent) zein and ethyl cellulose (5:5) waterproof coating on the tableware surface. Put the tableware in the ultraviolet disinfection box to sterilize.

The surface of the obtained tableware is smooth and can be formed, and the nutrients in the dry matter are determined after crushing: the polysaccharide content is 45.11%, the protein content is 39.16%, and the addition of the mulberry leaf extract not only improves the polysaccharide and protein content, but also provides. A certain content of polyphenols (1.26%) and flavonoids (0.48%) can improve its biological functions such as antioxidants, and these nutrients are beneficial to the recycling of the tableware as a high-protein nutritional feed.

Example 3

An environmentally friendly recyclable tableware using vegetable protein as a raw material and a preparation method thereof. The proportions of the raw materials are: 8.5 parts of corn yellow powder, 3.5 parts of soybean protein, 5 parts of starch, 2 parts of sodium carboxymethyl cellulose, and 1 part of edible gelatin . The addition amount of the mulberry leaf extract is added at 400 mL/kg of the above-mentioned raw material quality, and 450 mL/kg of water is added.

First, crush the corn yellow powder and soybean protein in the raw materials, pass through a 120-mesh sieve, put the rest of the raw materials into a container in sequence according to the above weight, stir, add mulberry leaf extract and water, and stir evenly. After the microwave power is 500 W and the microwave time is 2 min, it is put into the mold, and then taken out and dried after being pressed and formed. Apply 7% (mass percent) zein and ethyl cellulose (ratio 7:3) waterproof coating on the tableware surface. Put the tableware in the ultraviolet disinfection box to sterilize.

The surface of the obtained tableware is smooth and can be formed, and the nutrients in the dry matter are determined after crushing: the polysaccharide content is 42.38%, the protein content is 38.21%, and the addition of the mulberry leaf extract not only improves the polysaccharide and protein content, but also provides A certain content of polyphenols (0.5%) and flavonoids (0.22%) can improve its biological functions such as antioxidants, and these nutrients are beneficial to the recycling of the tableware as a high-protein nutritional feed.

Claims (7)

1. an environmentally friendly recyclable tableware with vegetable protein as a raw material, is characterized in that its raw material portion ratio is: 7～10 parts of corn yellow powder, 3～4 parts of soybean protein, 4～6 parts of starch, carboxymethyl cellulose 1-3 parts of sodium, 1-2 parts of edible gelatin, add mulberry leaf extract and appropriate amount of water. 2. a kind of environment-friendly recyclable tableware with vegetable protein as raw material according to claim 1, is characterized in that described mulberry leaf extract is to adopt water extraction method to extract, and its addition amount is by 400～850mL/ of above-mentioned raw material quality. kg was added, and the rest was supplemented to 850mL/kg with water. 3. a kind of preparation method of the environment-friendly tableware taking vegetable protein as raw material according to claim 1-2 is characterized in that carrying out according to the following steps: (1) first pulverize the corn yellow powder and soybean protein in the raw material, pass through a 120-mesh sieve, put the remaining raw materials into the container according to the above-mentioned amounts in turn, stir, add mulberry leaf extract and water, and stir evenly; (2) After the microwave power is 200-1000W and the microwave time is 1-5min, put it into the abrasive tool, and take it out to dry after pressing and forming; (3) Apply 5% to 10% (mass percentage) of zein and ethyl cellulose waterproof coating on the tableware surface; (4) Put the tableware in the ultraviolet disinfection box to sterilize. 4. the preparation method of a kind of environment-friendly tableware with vegetable protein as raw material according to claim 3, is characterized in that its raw material weight ratio is: corn yellow powder 7～10 parts, soybean protein 3～4 parts, starch 4～10 parts 6 parts, 1-3 parts of sodium carboxymethyl cellulose, 1-2 parts of edible gelatin, add mulberry leaf extract and appropriate amount of water. 5. the preparation method of a kind of environment-friendly tableware taking vegetable protein as raw material according to claim 3, is characterized in that wherein the mulberry leaf extract is extracted by water extraction, and the addition is by 400～850mL/kg of above-mentioned raw material quality Add, and make up the rest to 850mL/kg with water. 6 . The method for preparing an environmentally friendly tableware with vegetable protein as a raw material according to claim 3 , wherein the ratio of zein and ethyl cellulose is 9:1 to 5:5. 7 . 7. the preparation method of a kind of environment-friendly tableware with vegetable protein as raw material according to claim 3, is characterized in that it can be used as animal feed for recovery after it is used up, and its polysaccharide content is 42.38%～45.11%, and protein content is 38.21% to 41.80%, and the addition of mulberry leaf extract also provides a small amount of active substances flavonoids and polyphenols, which is more conducive to improving animal production and growth performance as animal feed.