Table 9. Data interpretation of the sugar composition of the samples analysed in the case c): proteinaceous materials are simultaneously present, their source is known, and there seems to be no contamination.

origin	Artwork	sample	analytical procedure	sugar content (DCCI: µg) (GCI %)	xylose	arabinose	rhamnose	fucose	galacturonic acid	glucuronic acid	mannose	galactose	glucose	proteinaceous material identified*	correlation coefficient	decisional scheme: - result	conclusions
Chiesa della Missione, Mondovi, Italy	mural painting by A. Pozzo	M-op	GCI	1.40	2.4	18.3	9.9	1.3	-	-	29.9	38.2	yes	E	no	T	tragacanth gum
Byzantine Christian Museum of Greece, Athens, Greece	panel painting “Panagia Kardiotissa”, Aggelos	pkB2	DCCI	0.5	0.0	8.6	0.0	0.0	0.0	0.0	54.8	36.6	yes	E	no	A	arabic gum
Western Buddha, Bamiyan Valley, Afghanistan	polychromy on clay sculpture, fragment	168-2	DCCI	0.2	58.9	0.0	0.0	0.0	0.0	0.0	0.0	41.1	yes	E	no	N/I	not identified
		108-4	DCCI	8.0	11.1	18.1	2.1	2.7	1.5	4.4	14.2	45.9	yes	E	0.92 F	T	tragacanth gum
		108-3	DCCI	1.8	17.2	18.8	0.0	2.6	0.8	1.3	10.4	48.9	yes	E	0.91 F	T	tragacanth gum
Buddhist temple of Shuilu'an (Shaanxi Province, China)	polychromy on clay sculpture	SL-R10 g	DCCI	0.3	51.6	0.0	0.0	0.0	0.0	0.0	36.3	12.1	yes	E+G	no	N/I	no polysaccharide binder
		SL-R10 r	DCCI	1.1	15.6	49.6	0.0	0.0	0.0	0.0	19.3	15.5	yes	E+G	0.90 F	F	fruit tree gum
		SLGR02	DCCI	0.3	0.0	0.0	10.7	5.0	0.0	5.1	45.7	33.5	yes	M	no	N/I	no polysaccharide binder

F fruit tree gum; T tragacanth gum; A arabic gum; E egg; M milk; G animal glue; N/A = not analysed.; N/I = not identified; proteinaceous media were analysed at DCCI according to Lluveras et all [35] , and at GCI according to Shilling et all [36] .