An enhanced procedure for the analysis of organic binders in Pompeian’s wall paintings from Insula Occidentalis

Heritage Science

Table 3 Amino acid profiles in the Pompeian’s painting samples

Amino acids	Sample S1		Sample S2		Sample S3		Sample S4		Sample S5
Amino acids	mg/kg	%	mg/kg	%	mg/kg	%	mg/kg	%	mg/kg	%
Arginine	34	0.4	36	1.7	58	2.6	21	1.2	132	2.0
Citrulline	90	1.2	79	3.8	56	2.5	34	1.9	131	2.0
Lysine	57	0.8	55	2.6	14	0.6	18	1.0	163	2.5
Ornithine	402	5.3	449	21.5	632	27.8	359	20.4	209	3.2
Asparagine	49	0.6	ND	0.0	ND	0.0	ND	0.0	ND	0.0
Glutamine	139	1.8	93	4.5	ND	0.0	ND	0.0	37	0.6
Glutamate	501	6.6	189	9.1	142	6.3	221	12.5	491	7.4
Aspartate	240	3.2	81	3.9	53	2.3	37	2.1	171	2.6
Tyrosine	107	1.4	48	2.3	55	2.4	28	1.6	75	1.1
Phenylalanine	92	1.2	144	6.9	60	2.6	136	7.7	136	2.1
Isoleucine	114	1.5	122	5.8	100	4.4	78	4.4	114	1.7
Leucine	155	2.0	42	2.0	150	6.6	46	2.6	155	2.4
Proline	670	8.8	164	7.9	456	20.1	337	19.1	505	7.7
Threonine	41	0.5	80	3.8	24	1.1	18	1.0	158	2.4
5-oxo-Proline	900	11.9	169	8.1	189	8.3	140	7.9	215	3.3
Alanine	476	6.3	30	1.4	31	1.4	28	1.6	531	8.1
Serine	213	2.8	61	2.9	65	2.9	54	3.1	836	12.7
Glycine	3311	43.6	244	11.7	187	8.2	209	11.8	2536	38.5
Total	7592	100	2087	100	2272	100	1764	100	6595	100