| Title: | Influence of phenols mass fraction in olive (Olea europaea L.) paste on volatile compounds in Buza cultivar virgin olive oil |
| Author(s): | Germek VM; Koprivnjak O; Butinar B; Pizzale L; Bucar-Miklavcic M; Conte LS; |
| Address: | "Department of Food Technology and Control, School of Medicine, University of Rijeka , Brace Branchetta 20, 51000 Rijeka, Croatia" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "The influence of the phenolic content in olive paste of cv. Buza increased by the addition of an aqueous solution of phenolic extract of freeze-dried olive pulp (cv. Istarska bjelica) on the final products of the lipoxygenase pathway in oil was studied. Increases by 12, 38, and 56% for ripe fruits (maturity index = 4.0) and by 38% for unripe fruits (maturity index = 1.2) were examined. Phenols in the olive paste were determined according to the HPLC method, whereas volatiles in oil were determined according to SPME-GC-MS. A significant negative effect on Z-3-hexenal and E-2-hexen-1-ol (Tukey's test, p < 0.05) was found for ripe fruits (average decreases of 55 and 60%, respectively), but not for the unripe sample. Positive effects in both ripening levels were found for Z-3-hexenyl acetate (average increase of 68% for ripe and a double increase for unripe fruits) and total C5 compounds (average increase of 32% for ripe and an increase of 30% for unripe fruits)" |
| Keywords: | Food Handling Fruit/chemistry/growth & development Gas Chromatography-Mass Spectrometry Olea/*chemistry/growth & development Olive Oil Phenols/*chemistry Plant Extracts/*chemistry Plant Oils/*chemistry Volatile Organic Compounds/*chemistry; |
| Notes: | "MedlineGermek, Valerija Majetic Koprivnjak, Olivera Butinar, Bojan Pizzale, Lorena Bucar-Miklavcic, Milena Conte, Lanfranco S eng Research Support, Non-U.S. Gov't 2013/05/31 J Agric Food Chem. 2013 Jun 26; 61(25):5921-7. doi: 10.1021/jf400692m. Epub 2013 Jun 13" |
