The present paper accounts for the study of the storage of Chemlali olive fruits at two conditions of limited
aerobiosis: in closed plastic bags and in open perforated plastic boxes for different periods before oil
extraction. The ultimate objective is to investigate the effect of the container type of the postharvest fruit
storage on the deterioration of the olive oil quality. The results have shown that the oil quality of Chemlali
olives deteriorated more rapidly during fruit storage in closed plastic bags than in perforated plastic
boxes. Therefore, the use of perforated plastic boxes is recommended for keeping the olives for longer
periods of storage. The repeated measures analysis of variance of all parameters analyzed indicated that
the olive oil quality is mainly affected by the olives storage conditions (containers type and storage periods).
Finally, blends of extra-virgin olive oil and mildly deodorized low-quality olive oils can be detected
by their alkyl esters concentrations.