albuminoid

n. insoluble simple protein found in connective and skeletal tissues, scleroprotein (Biochemistry)

adj. of or resembling an albumin or albumen

You may be looking for albumen, or egg white.Albumin (Latin: albus, white) refers generally to any protein with water solubility, which is moderately soluble in concentrated salt solutions, and experiences heat coagulation (protein denaturation). Substances containing albumin, such as egg white, are called albuminoids.
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Noun
1. a simple protein found in horny and cartilaginous tissues and in the lens of the eye
(synonym) scleroprotein
(hypernym) simple protein
(hyponym) collagen

adj. albuminoid, of or resembling an albumin or albumen

(n.)
One of a class of organic principles (called also proteids) which form the main part of organized tissues.
  

(a.)
Resembling albumin.