Shelf Life of Monovarietal Extra Virgin Olive Oils Cv. Arbequina and Coratina from Uruguay

Abstract

Two monovarietal extra virgin olive oils (Arbequina and Coratina), produced in Uruguay, were studied over a period of 12 months storage in amber bottles at 30 º C. Peroxide index, K 232 , K 270 , ∆K, OSI induction time did not exceed the maximum limits set by the International Olive Council (IOC) during the entire period. However, the content of ethyl esters increased with storage time and it is in relation with the shelf life. The International Olive Council (IOC) establishes the limits in the content of ethyl esters ≤ 35 ppm. The Coratina oil ceased to be extra virgin quality after 6 months of storage due to its content of ethyl esters (46 ppm), and the Arbequina oil after 9 months (52 ppm).Taking into consideration their content of ethyl esters, both the Arbequina and Coratina oils showed a very short shelf life less than six months. The determination of ethyl ester content proved to be a sensitive method for determining the loss of quality of extra virgin olive oils.

Exceptional long-term durability of Coratina monovarietal extra virgin olive oil evaluated through chemical parameters and oxidative stability test

“…Unfortunately, an accurate comparison of the phenolic profile of the CMOOs produced around the world is very problematic due to the different method of extraction, identification and unit of measurement used by the researchers to quantify the phenolic compounds. However, based on literature data, the CMOOs produced in the Mediterranean regions have a polyphenol content ranging usually from 300 to 600 mg/kg GAE, which is however still higher than that of CMOOs produced in non-Mediterranean countries (Mailer et al, 2010;Benincasa et al, 2011;Verma et al, 2012;Costa, 2014;Dabbou et al, 2015;Irigaray et al, 2016;Bruscatto et al, 2017;Ceci et al, 2017;Fuentes et al, 2018;Yu et al, 2021).…”

“…The growing interest in spreading Coratina cultivar is attested also by numerous studies in which the CMOOs produced in several parts of the world have been characterized (Fig. 1) (Mailer et al, 2010;Benincasa et al, 2011;Verma et al, 2012;Costa, 2014;Dabbou et al, 2015;Hassanein et al, 2016;Irigaray et al, 2016;Bruscatto et al, 2017;Ceci et al, 2017;Fuentes et al, 2018;Yu et al, 2021).…”