
1) Biodegradable plastic 2) Protein obtained from maize
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https://www.crosswordclues.com/clue/zein

Zein is a class of prolamine protein found in maize (corn). It is usually manufactured as a powder from corn gluten meal. Zein is one of the best understood plant proteins. Pure zein is clear, odorless, tasteless, hard, water-insoluble, and edible, and it has a variety of industrial and food uses. ==Commercial uses== Historically, zein has been us...
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http://en.wikipedia.org/wiki/Zein

• (n.) A nitrogenous substance of the nature of gluten, obtained from the seeds of Indian corn (Zea) as a soft, yellowish, amorphous substance.
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http://thinkexist.com/dictionary/meaning/zein/

(from the article `cereal processing`) ...embryo content, and corn oil extracted from the germ is commercially valuable. The microscopic appearance of the starch is distinctive, and the ...
Found on
http://www.britannica.com/eb/a-z/z/5
Ze'in noun [ Confer French
zéïne . See
Zea .]
(Chemistry) A nitrogenous substance of the nature of gluten, obtained from the seeds of Indian corn (
Zea ) as a soft, yellowish, amorphous substance. [ Formerly written
zeine .]
Found on
http://www.encyclo.co.uk/webster/Z/2

Type: Term Pronunciation: zē′in Definitions: 1. A prolamine present in maize; it lacks chiefly the amino acids l-tryptophan and l-lysine and is also low in cysteine content. It is the main storage protein in maize.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=100353

a soft, yellow powder of simple proteins obtained from corn, used chiefly in the manufacture of textile fibers, plastics, and paper coatings. · a synthetic fiber produced from this protein.
Found on
https://www.infoplease.com/dictionary/zein
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