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Title

Characterization of Virgin Olive Oils with Two Kinds of >frostbitten Olives' Sensory Defect

AuthorsRomero del Río, Inmaculada ; Aparicio-Ruiz, R. ; Oliver-Pozo, Celia; Aparicio López, Ramón ; García-González, Diego L.
Keywordsvirgin olive oil
quality
fatty acid
ethyl esters phenols
‘frostbitten olives’ defect
health claim
Issue Date2016
PublisherAmerican Chemical Society
CitationJournal of agricultural and food chemistry 64: 5590- 5597 (2016)
AbstractThe frost of olives on the tree due to drops of temperature can produce sensory defects in virgin olive oil (VOO). Temperature changes can be abrupt with freeze-thaw cycles or gradual, and they produce sensory and chemical variations in the oil. This study has analyzed the quality parameters (free fatty acids, peroxide value, UV absorption, and fatty acid ethyl esters) and phenols of VOOs described with the >frostbitten olives' sensory defect. The phenol profiles allowed grouping these VOOs into two types. One of them, characterized with >soapy> and >strawberry-like> aroma descriptors, had higher values of 1-acetoxypinoresinol, pinoresinol, and aldehydic form of the ligstroside aglycon. The other one, characterized with >wood> and >humidity> descriptors, had higher concentrations of luteolin and apigenin. Most VOOs (75%) from the first group, associated with abrupt drops of temperature, have concentration of phenols higher than the value established by the health claim on olive oil polyphenols approved by the European Commission.
Description3 Figuras.-- 2 Tablas
Publisher version (URL)http://dx.doi.org/10.1021/acs.jafc.6b02464
URIhttp://hdl.handle.net/10261/207777
Identifiersdoi: 10.1021/acs.jafc.6b02464
issn: 1520-5118
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