Context: With increasing environmental concerns about synthetic coatings (such as PFOA) and the higher prices of hydrocarbon based petrochemicals, there is a focus on zein (corn protein) as a coating for paper in high grease applications such as popcorn bags.

Question: What is newly used as a coating in high grease applications?
Answer: corn protein

Question: Popcorn bags produced modernly are likely to use what type of coating?
Answer: corn protein

Question: PFOA is what type of coating?
Answer: synthetic

Question: In what way can zein not be used?
Answer: Unanswerable

Question: What type of coating would a hydrocarbon bag likely have?
Answer: Unanswerable

Question: What is another term for synthetic protein?
Answer: Unanswerable

Question: To what are there decreasing environmental concerns?
Answer: Unanswerable

Question: What is an example of a natural coating?
Answer: Unanswerable

Question: What is no longer used as a coating in high grease applications?
Answer: Unanswerable

Question: Garbage bags produced modernly are likely to use what type of coating?
Answer: Unanswerable

Question:  PFOA is what type of paper?
Answer: Unanswerable