Acorn Oil: Chemistry and Functionality

Table 3

Composition (%) of sterols in acorn oils.

Acorn species	Source	Cholesterol	Campesterol	Stigmasterol	Clerosterol	β-Sitosterol	Δ5-Avenasterol	Δ7-Avenasterol	References
Q. aegilops	Jordan	0.052	0.07	3.02	0.35	84.61	5.80	0.24	[2]
Q. infectoria		0.42	0.07	2.60	0.34	77.20	11.40	0.24
Q. calliprinos		0.44	0.08	3.8	0.34	78.70	9.30	0.25
Q. rubra^a	Latvia	—	15.8	8.5	—	184.8	18.1	2.6	[13]
Q. robur^a		—	11.4	10.4	—	157.5	10	6.9
Q. rotundifolia^b	Portugal	0.18	2.12	2.91	1.60	88.21	2.92	0.31	[25]
Q. suber		0.10	10.2	3.61	1.12	83.52	0.36	0.06
Q. ilex (Zaghouan)	Tunisia	—	4.28	1.95	1.92	88.28	1.27	1.63	[17]
Q. suber (Nabeul)		—	1.82	1.55	0.95	92.11	1.44	1.60

^aPhytosterol content (mg/100 g oil); ^bextracted by hexane; —, not known.