How biodegradable corn plastic is made

The video tutorial explains the process of creating biodegradable plastic, known as PLA, from starch. It begins with heating to loosen oil from the germ, followed by grinding and centrifugation to separate oil from starch. The starch is then mixed with citric acid to form long chain polymers, which are subsequently hardened into pellets, forming the building blocks of PLA.

What temperature is mentioned for steaming in the process?

• 100 degrees

• 200 degrees

• 150 degrees

• 50 degrees

What is the purpose of the centrifuge in the process?

• To mix ingredients

• To separate oil from starch

• To heat the mixture

• To cool down the product

What type of acid is mentioned in the mixture?

• Acetic acid

• Citric acid

• Lactic acid

• Formic acid

What are the pellets described as in the text?

• Waste products

• Building blocks of biodegradable plastic

• Chemical byproducts

• Food ingredients

What is the common name for the biodegradable plastic mentioned?

• PLA

• PVC

• PET

• PS