Guerfel, Mokhtar ， Zaghdoud, Chokri ， Jebahi, Khaled ， Boujnah, Dalenda ， Zarrouk, Mokhtar
2010-12-08 JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010 58(卷), 23(期), (12469-12472页)
Here, we report the characterization of virgin olive oil samples obtained from fruits of the main Tunisian olive cultivar (Chemlali) grown in four planting densities (156, 100, 69, and 51 trees ha(-1)). Olive oil samples obtained from fruits of trees grown at 100 trees ha(-1) had a higher content of oleic acid (65.5%), a higher content of chlorophyll and carotenoids, and a higher content in total phenols (1059.08 mg/kg). Interestingly, olives grown at the two highest planting densities yielded more stable oils than olives grown at the two lowest ones. Thus planting density is found to be a key factor for the quality of olive oils in arid regions.