Animal glue amino acids

See 2-Aminobenzene sulfonic acid Animal GMS. See Glyceryl stearate Animal collagen amino acids. See Collagen amino acids Animal glue... 

Animal glue is a complex colloidal mixture of proteins. The related gelatins are also complex heterogeneous mixtures of proteins. They are strongly hydrophilic and rich in the amino acids glycine, proline, lysine, hydroxyproline and hydroxylysine. Casein is a phosphoprotein obtained from the milk of mammals. 

Amino acid Egg white Egg yolk Casein Animal glue (collagen) Wool (keratin) Silk (fibroin) Garlic... 

S.M. Harrison, I. Kami, V. Prokoratova, M. Mazanek, E. Kenndler, Characterisation and identification of proteinaceous binding media (animal glues) from their amino acid profile by capillary zone electrophoresis, Anal. Bioanal. Chem., 382, 1520 1526 (2005). 

The identification of the proteinaceous binder is done by the evaluation of the amino acid patterns obtained generally egg, casein, animal glue and garlic (garlic being used in gildings [93]) are reported. The amino acid profiles have been processed by different methods and several strategies have been developed to obtain the final identification ... 

Figure 9.2 PCA score plot of amino acidic profiles obtained in the GC/MS analysis of samples from the collection of paint reference materials of Opificio delle Pietre Dure (+), containing egg, casein and animal glue as binders, and of samples from the OL17bis series (x ) from the Leonetto Tintori Collection [ 10]...

Animal glues are derived by the hydrolysis of the protein constituent collagen of animal hides and bones. Collagen in its natural state is water insoluble and must be conditioned to solubilize the protein. Collagen molecules are triple helices of amino acid sequences and contain both nonpolar and charged acidic and basic side chains. The conversion of... 

Animal glues are composed of a-amino acids joined in polypeptide hnkages to form long-chain polymers [5 8]. A typical chain fraction with three amino adds ... 

Table 1 Amino Acids Present in Collagen and Animal Glue... 

At the same time, there is a very interesting observation about indole and methylindole revealed by Py-GC/MS as products of thermal decomposition of tryptophan in egg white, because this amino acid is absent in animal glue and is usually lost in the acid hydrolysis workup common to conventional GC and HPLC. Also, there is a very detailed comparison between conventional techniques (Uke GC aud HPLC) and analytical pyrolysis methods in the end of the article. 

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