Table 1.

Composition of resin acids in gum rosin from different sources [23].

Species	Origin	Abietane-type Acids Content (wt.%)				Other Acids (wt.%)
		Abietic	Palustric/Levopimaric	Neoabietic	Dehydroabietic
Pinus massoniana	China	39	25	16	7	13
Pinus elliotti	Brazil	37	15	16	5	27
Pinus merkusii	Indonesia	28	27	5	4	36
Pinus sylvestris	Russia	35	23	15	10	17
Pinus halepensis	Greece	45	23	13	5	14
Pinus pinaster	France	35	20	15	9	21
	Portugal	34	21	19	9	17
	Spain	26	22	27	6	19
	USA	14	39	18	4	25