Phenolic profile of virgin olive oils with and without sensory defects: Oils with non-oxidative defects exhibit a considerable concentration of phenols

2015 ◽  
Vol 118 (2) ◽  
pp. 299-307 ◽  
Author(s):  
Ramón Aparicio-Ruiz ◽  
Diego L. García-González ◽  
Celia Oliver-Pozo ◽  
Noelia Tena ◽  
María T. Morales ◽  
...  
Keyword(s):  
Phenolic Profile ◽  
Virgin Olive Oils ◽  
Olive Oils ◽  
Considerable Concentration ◽  
Sensory Defects

scholarly journals Formulations of Rancid and Winey-Vinegary Artificial Olfactory Reference Materials (AORMs) for Virgin Olive Oil Sensory Evaluation

Foods ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1870
Author(s):  
Ramón Aparicio-Ruiz ◽  
Sara Barbieri ◽  
Tullia Gallina Toschi ◽  
Diego L. García-González
Keyword(s):  
Olive Oil ◽  
Edible Oils ◽  
Virgin Olive Oil ◽  
Strict Sense ◽  
Virgin Olive Oils ◽  
Olive Oils ◽  
International Regulations ◽  
Sensory Defects ◽  
And Control

Sensory assessment of virgin olive oil (“panel test”) is the only sensory method included in international regulations of edible oils and its application is compulsory. Even if its application has been a success in quality control, improving the quality of virgin olive oils over the last 30 years, at present, there is no reference material (RM), in the strict sense of the term, to be used as a validated standard for sensory defects of virgin olive oil with which tasters can be trained. Usually, real samples of virgin olive oils assessed by many panels for the International Olive Council (IOC) ring tests are used as materials of reference in panel training and control. The latter are highly representative of the main perceived defects, but availability is limited, samples are not homogeneous year after year, and other secondary defects can be present. Thus, in order to provide solutions, this work describes an analytical procedure for implementing olfactory formulations that emulate rancid and winey-vinegary defects found in virgin olive oils with the aim of providing reproducible RMs that can be prepared on demand. A strategy for designing RMs for aroma is presented and the optimization process to obtain the best formulation is described. Under the criteria of representativeness, verified with the advice of the IOC, aroma persistence, and simplicity in formulation, two RMs for winey-vinegary and rancid were obtained by diluting acetic acid and ethanol (winey-vinegary defect) and hexanal (rancid defect) together with other compounds that are used to modify aroma and avoid non-natural sensory notes.

High-resolution mass spectrometry to evaluate the influence of cross-breeding segregating populations on the phenolic profile of virgin olive oils

2014 ◽  
Vol 94 (15) ◽  
pp. 3100-3109 ◽  
Author(s):  
Verónica Sánchez de Medina ◽  
Mónica Calderón-Santiago ◽  
Milad El Riachy ◽  
Feliciano Priego-Capote ◽  
María Dolores Luque de Castro
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
High Resolution Mass Spectrometry ◽  
Phenolic Profile ◽  
Virgin Olive Oils ◽  
Cross Breeding ◽  
Olive Oils ◽  
High Resolution Mass ◽  
Resolution Mass

scholarly journals Phenolic Profile and Antioxidant Activity of Italian Monovarietal Extra Virgin Olive Oils

Antioxidants ◽  
2019 ◽  
Vol 8 (6) ◽  
pp. 161 ◽  
Author(s):  
Carmine Negro ◽  
Alessio Aprile ◽  
Andrea Luvisi ◽  
Francesca Nicolì ◽  
Eliana Nutricati ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Total Phenolic ◽  
Phenolic Profile ◽  
Virgin Olive Oils ◽  
Olive Oils ◽  
Ic50 Values ◽  
Phenolic Profiles ◽  
Trolox Equivalent ◽  
Phenolic Substances

In the last years, the interest in Italian monovarietal oils has increased due to their specific organoleptic qualities. Extra virgin olive oils (EVOOs) are rich in phenolic compounds, secondary metabolites well known and studied for their nutraceutical properties. However, among EVOOs, there is great variability in phenolic composition due to the origin, the production technique, and mainly, the genotype. The aim of this work was to evaluate the different phenolic profiles and the antioxidant activities of monovarietal oils. The results confirm this variability. In fact, the overall content of oleuropein varies up to four times between the different genotypes (from 33.80 to 152.32 mg/kg oil), while the oleocanthal content is significant only in two oils. The antioxidant activity, determined with 2,2-Diphenyl-1-picrylhydrazyl (DPPH) and oxygen radical absorbance capacity (ORAC) assays, is correlated with the content of total phenolic substances, with half maximal inhibitory concentration (IC50) values for the DPPH test ranging from 160 to 91 mg of oil, while the ORAC test shows values between 5.45 and 8.03 μmol Trolox equivalent (TE)/g oil.

Usefulness of phenolic profile in the classification of extra virgin olive oils from autochthonous and introduced cultivars in Tunisia

2016 ◽  
Vol 243 (3) ◽  
pp. 467-479 ◽  
Author(s):  
Anis Loubiri ◽  
Amani Taamalli ◽  
Nassima Talhaoui ◽  
Salma Nait Mohamed ◽  
Antonio Segura Carretero ◽  
...  
Keyword(s):  
Phenolic Profile ◽  
Virgin Olive Oils ◽  
Olive Oils

scholarly journals Eleven Monovarietal Extra Virgin Olive Oils from Olives Grown and Processed under the Same Conditions: Effect of the Cultivar on the Chemical Composition and Sensory Traits

Foods ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 904
Author(s):  
Giuseppe Di Lecce ◽  
Maria Piochi ◽  
Deborah Pacetti ◽  
Natale G. Frega ◽  
Edoardo Bartolucci ◽  
...  
Keyword(s):  
Oxidative Stability ◽  
Total Phenolic ◽  
Olive Cultivar ◽  
Phenolic Profile ◽  
Virgin Olive Oils ◽  
Olive Oils ◽  
Panel Test ◽  
Continuous Plant ◽  
The Impact ◽  
Secoiridoid Derivatives

Eleven Italian monovarietal extra virgin olive oils (MEVOOs) (Carboncella, Coratina, Frantoio, Leccino, Marzio, Maurino, Moraiolo, Piantone di Falerone, Pendolino, Rosciola, Sargano di Fermo) from olives grown in the same experimental olive orchard, under the same conditions (fertilization, irrigation), and processed with the same technology (three-way continuous plant) were investigated. As a result, the impact of the olive cultivar on fatty acid and triacylglycerols composition, oxidative stability, polar phenolic profile and sensory properties (panel test) of the oil was assessed. Pendolino, Maurino and Marzio oils presented the highest levels (p < 0.01) of palmitic, linoleic and linolenic acids % and the lowest oleic:linoleic ratio. Within triacylglycerols, triolein (OOO) strongly varied among the oils, with Coratina and Leccino having the highest content. Frantoio showed the lowest 1-Stearoyl-2-palmitoyl-3-oleylglycerol and 1,3-Distearoyl-2-oleylglycerol amounts. Rosciola showed the highest level (p < 0.01) for two of the most abundant secoiridoid derivatives (the dialdehydic forms of decarboxymethyl elenolic acid linked to hydroxytyrosol and tyrosol). A good correlation was found between total phenolic content and oxidative stability, indicating Marzio and Leccino respectively as the richest and poorest genotypes. Sensory variability among varieties was mainly linked to perceived bitterness, pungency and fruitiness, while no effects were found on secondary flavors.

scholarly journals Biological Activity of Phenolic Compounds in Extra Virgin Olive Oils through Their Phenolic Profile and Their Combination with Anticancer Drugs Observed in Human Cervical Carcinoma and Colon Adenocarcinoma Cells

Antioxidants ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 453 ◽  
Author(s):  
Jelena Torić ◽  
Anamaria Brozovic ◽  
Mirela Baus Lončar ◽  
Cvijeta Jakobušić Brala ◽  
Ana Karković Marković ◽  
...  
Keyword(s):  
Biological Activity ◽  
Olive Oil ◽  
Anticancer Drugs ◽  
Anticancer Agents ◽  
Biological Effect ◽  
Dependent Manner ◽  
Phenolic Profile ◽  
Virgin Olive Oils ◽  
Olive Oils

The roles of phenolics from olive oils as effective anticancer agents have been documented in various in vitro studies of different cancer cells lines, but the relationship between the phenolic profile of olive oil and its biological activity needs more elucidation. In this study, we analysed phenolic profiles of extra virgin olive oils (EVOOs) from different autochthonous cultivars from Croatia (Oblica, Bjelica, Buža, Žižolera) and investigated the biological effect of EVOO phenolic extracts (EVOO-PEs) on human cervical (HeLa) and human colon (SW48) cancer cell lines alone and in combination with cisplatin (cDDP), carboplatin (CBP), 5-fluorouracil (5-FU) and irinotecan. The quantitative evaluation of olive oil polyphenols was performed by HPLC-DAD and spectrophotometric analysis. The biological effect of EVOO-PEs alone and in combination with anticancer drugs was measured by MTT assay. Analysed EVOO-PEs differ in phenolic profile and inhibited HeLa and SW48 cells in a dose-dependent manner. Further, it is shown that EVOO-PEs (Oblica-Sea, Buža and Žižolera), in combination with anticancer drugs, increase the metabolic activity of HeLa and SW48 cells and have a protective role. These data imply careful consummation of olive oil during chemotherapy of cancer patients.

Comprehensive 3-Year Study of the Phenolic Profile of Moroccan Monovarietal Virgin Olive Oils from the Meknès Region

2015 ◽  
Vol 63 (17) ◽  
pp. 4376-4385 ◽  
Author(s):  
Aadil Bajoub ◽  
Elena Hurtado-Fernández ◽  
El Amine Ajal ◽  
Noureddine Ouazzani ◽  
Alberto Fernández-Gutiérrez ◽  
...  
Keyword(s):  
Phenolic Profile ◽  
Virgin Olive Oils ◽  
Olive Oils
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