Difference between revisions of "Zein"

Latest revision as of 10:44, 6 June 2022

Description

A Protein, Prolamin, extracted from Corn and maize with dilute isopropanol. Zein is a complex protein with a molecular weight of 38,000. It contains 17 amino acids, but is free of Glycine, cystine, Lysine, and tryptophan. It is an odorless and tasteless powder that is slightly white to yellowish in color. Zein is used in manufacturing plastics, paper coatings, adhesives, printing inks, films, edible coatings, varnishes (imitation Shellac), fibers.

Synonyms and Related Terms

Zein [Corn Products Refining]

Risks

Nontoxic.
Combustible.
ThermoFisher: SDS

Physical and Chemical Properties

Soluble in methanol, aqueous alcohols, glycols, THF, and strong alkaline solutions.
Insoluble in water, dilute acids, anhydrous alcohols, turpentine, esters, oils and fats.
Density = 1.226 g/ml

Resources and Citations

G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 241

The Dictionary of Paper, American Paper Institute, New York, Fourth Edition, 1980

John S. Mills, Raymond White, The Organic Chemistry of Museum Objects, Butterworth Heineman, London, 2nd ed., 1994

@@ Line 1: / Line 1: @@
 == Description ==
-A [http://cameo.mfa.org/materials/fullrecord.asp?name=protein protein], [http://cameo.mfa.org/materials/fullrecord.asp?name=prolamin prolamin], extracted from [http://cameo.mfa.org/materials/fullrecord.asp?name=corn corn] and maize with dilute [http://cameo.mfa.org/materials/fullrecord.asp?name=isopropyl%20alcohol isopropanol]. Zein is a complex protein with a molecular weight of 38,000. It contains 17 amino acids, but is free of [http://cameo.mfa.org/materials/fullrecord.asp?name=glycine glycine], cystine, [http://cameo.mfa.org/materials/fullrecord.asp?name=lysine lysine], and tryptophan. It is an odorless and tasteless powder that is slightly white to yellowish in color. Zein is used in manufacturing [http://cameo.mfa.org/materials/fullrecord.asp?name=plastic plastics], paper coatings, [http://cameo.mfa.org/materials/fullrecord.asp?name=adhesive adhesives], [http://cameo.mfa.org/materials/fullrecord.asp?name=printing%20ink printing inks], [http://cameo.mfa.org/materials/fullrecord.asp?name=film films], edible coatings, [http://cameo.mfa.org/materials/fullrecord.asp?name=varnish varnishes] (imitation [http://cameo.mfa.org/materials/fullrecord.asp?name=shellac shellac]), fibers.
+A [[protein|protein]], [[prolamin|prolamin]], extracted from [[corn|corn]] and maize with dilute [[isopropyl%20alcohol|isopropanol]]. Zein is a complex protein with a molecular weight of 38,000. It contains 17 amino acids, but is free of [[glycine|glycine]], cystine, [[lysine|lysine]], and tryptophan. It is an odorless and tasteless powder that is slightly white to yellowish in color. Zein is used in manufacturing [[plastic|plastics]], paper coatings, [[adhesive|adhesives]], [[printing%20ink|printing inks]], [[film|films]], edible coatings, [[varnish|varnishes]] (imitation [[shellac|shellac]]), fibers.
 == Synonyms and Related Terms ==
@@ Line 7: / Line 7: @@
 Zein [Corn Products Refining]
-== Other Properties ==
+== Risks ==
-Soluble in methanol, aqueous alcohols, glycols, THF, and strong alkaline solutions.  Insoluble in water, dilute acids, anhydrous alcohols, turpentine, esters, oils and fats.
+* Nontoxic.
+* Combustible.
+* ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC179311000&productDescription=ZEIN%2C+PURIFIED+100GR&vendorId=VN00032119&countryCode=US&language=en SDS]
-{| class="wikitable"
+== Physical and Chemical Properties ==
-|-
-! scope="row"| Density
-| 1.226
-|}
-== Hazards and Safety ==
+* Soluble in methanol, aqueous alcohols, glycols, THF, and strong alkaline solutions.
+* Insoluble in water, dilute acids, anhydrous alcohols, turpentine, esters, oils and fats.
+* Density = 1.226 g/ml
-Nontoxic. Combustible.
+==Resources and Citations==
-== Sources Checked for Data in Record ==
 * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 241