I think it is a big disadvantage, because when human beings enter the 21st century, the world has undergone many amazing changes. While people are delighted with the rapid development of science and technology, they have also experienced greater uneasiness and even disaster. In addition to the panic caused by the development of high technology, especially biotechnology, war and disease seem to have brought mankind directly to the gate of hell.

The negative effects of biotechnology

The negative effects of biotechnology are mainly as follows: First, unexpected safety problems may arise when people develop and utilize biotechnology. Just as there is widespread concern about the harm to biodiversity caused by the release of various genetically modified living organisms into the environment. In addition, genetically engineered drugs, vaccines, genetically modified foods, gene therapy, etc. may have similar problems. Misuse of biotechnology and unethical applications of biotechnology may also pose significant safety risks.

Safety hazards in microbiology laboratories

Compared with other physical and chemical laboratories or other types of laboratories, the microbiology and biomedical laboratory is a special laboratory in which Everyone who works and the surrounding environment in contact with them is at high risk of contracting infectious diseases or affecting their health. Omissions and accidents in microbiology laboratory management can not only lead to infection of laboratory workers, but also cause environmental pollution and large-scale population infection. Accidental infections in laboratories at home and abroad are not uncommon. In severe cases, tens of thousands of experimental animals have to be slaughtered, and even laboratory workers die.

With the development of the economy, the acceleration of people’s pace of life and the improvement of living standards, the amount of plastic used is increasing day by day. In 1996, my country's plastic packaging consumption reached 2.43 million tons, with an average annual growth rate of more than 20%. In particular, plastic waste in garbage in cities, along major transportation lines, and tourist attractions has increased rapidly. According to surveys, Beijing's annual domestic waste production has reached 3 million tons, of which waste plastic accounts for about 3%, with an annual growth rate of 48%. The plastic content of garbage in coastal cities is higher, reaching 8-10%. The proportion of these waste plastics in the garbage has reached more than one third if calculated by volume, and it has greatly increased the difficulty and cost of garbage disposal. Since waste plastic is difficult to degrade for hundreds of years, if it is discarded in the natural environment, it will provide a breeding ground for mosquitoes, flies and bacteria to survive and breed; if it is buried underground, it will easily pollute groundwater, hinder the growth of plant root systems, damage soil quality, and affect Crop harvest; if burned by fire, a variety of toxic gases will be produced. "White pollution" has become a major public hazard endangering my country's social environment and has seriously hindered the sustainable development of my country's economy and environment.

Between 1992 and 1996, Far East Green World developed recycled cardboard disposable tableware and reed pulp

Due to low technological content and other reasons, the production scale of molded tableware It has never been able to expand. In 1996, the company sent personnel to inspect the technical situation of biodegradable packaging products in the European market and believed that the development of plant starch production

fully degradable disposable tableware may be the key to eliminating "white pollution" a way. In 1997, composed of a group of food, chemical, and mechanical experts, the company focused on investing in the development of fully degradable disposable catering supplies. This project was included in the 1997 National Torch Plan projects.

They absorbed foreign advanced technology and combined with domestic paper tableware production technology to carry out a series of innovations: using

domestic sweet potatoes, corn and other starches that are rich in resources as the main raw materials, instead of The single higher-priced potato starch from abroad is replaced; 20% of natural fiber is added to the sweet potato starch raw material, which increases the obvious strength of the tableware. The processing technology of food puffing makes the product light weight and soft; the surface spraying and shaping equipment to increase the strength make the food and beverage products produced have waterproof, oil-proof and heat-resistant functions. Su Xiao

Hai made a vivid metaphor: It is like the reinforced cement in building materials. Sweet potato starch is the cement, and

the various hay and hay chopped and mixed in The rhizomes of the plants are the steel bars, so that the strength of the tableware can be significantly enhanced

.

The starch-based tableware products produced by Far East Green World are tested by the German SGS agency with reference to international food packaging standards.

The tableware products are filled with hot water and hot oil at 100 degrees Celsius. It will not deform at all for more than two hours and has excellent thermal insulation performance. Since starch and additives are natural plant raw materials, the product has excellent degradation performance. Tests by the National Environmental Testing Center show that it can degrade more than 90% in about 10 days and can be completely degraded within a month.

According to reports, since the project uses plant starch and plant fiber, the cost is low. Each rice box with rice bowl

costs about 0.12 yuan, and rice box without rice bowl and bowl. , the listing cost is about 0.07 yuan, and it has broad market prospects.

Currently, Far East Green World plans to invest 160 million yuan to build a large-scale factory with an annual output of 5 billion pairs of disposable chopsticks and 3.5 billion pieces of various

bowls, plates, boxes and other products. The fully degradable green disposable tableware production base, after the project reaches full production, can add an annual output value of 625 million yuan and an additional profit and tax of about 130 million yuan. The civil construction project of the base started in March this year.

A standard factory building of 20,000 square meters has been built. If follow-up funds can be guaranteed, it is expected to reach production by the end of 1999.

Su Xiaohai Said: Our scientific and technological advantages are obvious, and the social benefits we can create in the future are also obvious: the functional indicators of disposable sanitary chopsticks made of starch can completely replace disposable wooden chopsticks. This project can save nearly 500,000 cubic meters of wood resources for the country every year. If the group can reach production, it is expected to use more than 200,000 tons of sweet potatoes every year to process them into starch. With more than 100,000 tons of raw materials, it can also lift more than 100,000 people in poor areas out of poverty and promote the development of agricultural industrialization in old areas.