Abstract: A composition of matter including dried whole eggs and/or lyophilized whole eggs dissolved in a solvent comprising formic acid, nitric acid, or a combination of formic and nitric acid, and a method of making the same.

Abstract: A method of attaching an azide moiety to a biomolecule. The method comprises contacting a biomolecule in a solution with an azide and a copper, for a time wherein at least one azide moiety is covalently bonded to the biomolecule to yield an azidylated biomolecule. The copper is copper (I), and can be generated from copper (II) by a reductant. The solution further comprises a copper ligand for reducing degradation of the biomolecule. The azilylated biomolecule can be attached to a reagent comprising an alkyne via a copper-catalyzed azide-alkyne cycloaddition (“CuAAC”) reaction or a strain-promoted alkyne-azide cycloaddition (“SPAAC”) reaction.

Abstract: A method of attaching an azide moiety to a biomolecule. The method entails contacting a biomolecule in a solution with an azide and an oxidizing agent, for a time and at a temperature wherein at least one azide moiety is covalently bonded to the biomolecule to yield an azidylated biomolecule. The method can be used to identify hydrophobic microenvironments in soluble proteins. Also, a method of attaching a reagent comprising an alkyne to a biomolecule. The method comprises reacting a biomolecule in a solution with an azide and a reagent comprising an alkyne, for a time and at a temperature wherein at least one reagent comprising an alkyne is covalently bonded to the biomolecule via triazole linkage.