Scientists have invented silk protein cling film that can hold fruit for more than a week as a natural, biodegradable plastic wrap made from alternative plastics. The international community has been paying more and more attention to the pollution of plastic waste, especially the crisis of entering the ocean. Some people estimate that by 2050 there will be more plastics in the world's oceans. Doctors also warned that certain types of plastic containers may be harmful to health.
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Otis is the world's largest manufacturer and maintainer of people-moving products, including elevators, escalators and moving walkways. Founded more than 160 years ago by the inventor of the safety elevator, Otis offers products and services through its companies in more than 200 countries and territories, and maintains approximately 1.9 million elevators and escalators worldwide. Otis is a unit of United Technologies Corp., a leading provider to the aerospace and building systems industries worldwide
Approximately 2.6 million Otis® elevators and escalators in operation worldwide
Otis has a network of research and engineering facilities and test towers around the world
Company's two tallest elevator test towers are located in Shibayama, Japan (505 feet or 154 meters above ground; 89 feet or 27 meters below ground) and Bristol, Conn., United States (384 feet or 117 meters above ground)
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Now, biomedical engineers at the Tufts University have developed a technology that uses a protein in silk that helps make it one of the toughest materials in nature.
This is a wise way of considering how to manage the resources of our planet, perhaps using renewable energy systems, rather than non-reproducible systems. By dip coating in a small amount of liquid containing fibroin, freshness can also be applied with a spray. Silk is naturally produced.
The results of the study showed that silk fibroin film prolongs the freshness of perishable fruits by slowing fruit oxidation, prolonging fruit firmness and preventing dehydration.
People
Nearly 66,000 employees globally with approximately 1,000 branch offices
Revenue
$12 billion in 2015
Installed Base
Service Base
Approximately 1.9 million elevators and escalators serviced by Otis worldwide
Countries
Products sold and serviced in more than 200 countries and territories
Manufacturing
Major manufacturing facilities on four continents
Engineering and Test Centers
Silk protein cling film can maintain better freshness