The chemical composition of the essential oil from flowering tops of Achillea ligustica All. was studied. Samples were collected in different localities of Sardinia (Italy) and hydrodistilled both with Clevenger-type and with simultaneous distillation−extraction apparatus. The yields ranged between 0.88 ± 0.06 and 0.43 ± 0.02% (vol/dry wt). The essential oils were analyzed by GC-MS, and a total of 96 components were detected. From a qualitative point of view, irrelevant differences between samples were observed. Strong chemical variability depending on the origin of the samples was observed. The major compounds found were santolina alcohol (6.7−21.8%, for the first time detected in A. ligustica), borneol (3.4−20.8%), sabinol (2.1−15.5%), trans-sabinyl acetate (0.9−17.6%), α-thujone (0.4−25.8%), and, among sesquiterpenes, viridiflorol (0.7−3.6%). No significant differences were detected between essential oils extracted by hydrodistillation and simultaneous distillation−extraction with CH2Cl2 and n-hexane. Antioxidant activity as DPPH radical scavenging activity was expressed in TEAC and ranged between 0.40 and 0.88 mmol/L. The antimicrobial and antifungal activities were investigated on Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Candida albicans, Penicillium commune, Fusarium oxysporum, Rizoctonia solani, and Aspergillus flavus, showing low activity.
|Titolo:||Chemical Composition and Antioxidant, antimicrobial and antifungal activites of the essential oil of Achillea ligustica All|
|Data di pubblicazione:||2005|
|Appare nelle tipologie:||1.1 Articolo in rivista|