Pedologic Factors Affecting Virgin Olive Oil Quality of "Chemlali" Olive Trees (Olea europaea L.).
J Oleo Sci
; 66(8): 907-915, 2017 Aug 01.
Article
in En
| MEDLINE
| ID: mdl-28701656
ABSTRACT
The aim of this study examined the characterization of extra virgin olive oil samples from the main cultivar Chemlali, grown in five olive orchards with different soil type (Sandy, Clay, Stony, Brown, Limestone and Gypsum). Volatile compounds were studied using headspace-solid phase micro-extraction (HS-SPME) and gas chromatography-mass spectrometry (GC-MS) technics. Moreover, the sterol profile was established using gas chromatography-mass spectrometry. 35 different volatile compounds were identified alcohols, esters, aldehydes, ketones and hydrocarbons. The chemical composition of the volatile fraction was characterized by the preeminence of 2-hexenal (32.75%) and 1-hexanol (31.88%). Three sterols were identified and characterized. For all olive oil samples, ß-sitosterol (302.25 mg/kg) was the most abundant sterol. Interestingly, our results showed significant qualitative and quantitative differences in the levels of the volatile compounds and sterols from oils obtained from olive trees grown in different soil type.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Soil
/
Food Quality
/
Olea
/
Volatile Organic Compounds
/
Olive Oil
Type of study:
Prognostic_studies
/
Qualitative_research
Language:
En
Year:
2017
Type:
Article