Assessment of polar phenolic compounds of virgin olive oil by NIR and mid-IR spectroscopy and their impact on quality

2016 ◽  
Vol 119 (1) ◽  
pp. 1600099 ◽  
Author(s):  
Maria Eugenia Mora-Ruiz ◽  
Patricia Reboredo-Rodríguez ◽  
Maria Desamparados Salvador ◽  
Carmen González-Barreiro ◽  
Beatriz Cancho-Grande ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Ir Spectroscopy ◽  
Olive Oil ◽  
Virgin Olive Oil

scholarly journals Evolution of Flavors in Extra Virgin Olive Oil Shelf-Life

Antioxidants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 368
Author(s):  
Paula Garcia-Oliveira ◽  
Cecilia Jimenez-Lopez ◽  
Catarina Lourenço-Lopes ◽  
Franklin Chamorro ◽  
Antia Gonzalez Pereira ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Shelf Life ◽  
Olive Oil ◽  
Unsaturated Fatty Acids ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Volatile Fraction ◽  
Organoleptic Characteristics ◽  
Olive Variety ◽  
Minor Compounds

Extra virgin olive oil (EVOO) is one of the most distinctive ingredients of the Mediterranean diet. There are many properties related to this golden ingredient, from supreme organoleptic characteristics to benefits for human health. EVOO contains in its composition molecules capable of exerting bioactivities such as cardio protection, antioxidant, anti-inflammatory, antidiabetic, and anticancer activity, among others, mainly caused by unsaturated fatty acids and certain minor compounds such as tocopherols or phenolic compounds. EVOO is considered the highest quality vegetable oil, which also implies a high sensory quality. The organoleptic properties related to the flavor of this valued product are also due to the presence of a series of compounds in its composition, mainly some carbonyl compounds found in the volatile fraction, although some minor compounds such as phenolic compounds also contribute. However, these properties are greatly affected by the incidence of certain factors, both intrinsic, such as the olive variety, and extrinsic, such as the growing conditions, so that each EVOO has a particular flavor. Furthermore, these flavors are susceptible to change under the influence of other factors throughout the oil's shelf-life, such as oxidation or temperature. This work offers a description of some of the most remarkable compounds responsible for EVOO’s unique flavor and aroma, the factors affecting them, the mechanism that lead to the degradation of EVOO, and how flavors can be altered during the shelf-life of the oil, as well as several strategies suggested for the preservation of this flavor, on which the quality of the product also depends.

scholarly journals Virgin Olive Oil Phenolic Compounds Modulate the HDL Lipidome in Hypercholesterolaemic Subjects: A Lipidomic Analysis of the VOHF Study

2021 ◽  
pp. 2001192 ◽  
Author(s):  
Sara Fernández‐Castillejo ◽  
Anna Pedret ◽  
Úrsula Catalán ◽  
Rosa‐Maria Valls ◽  
Marta Farràs ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Lipidomic Analysis

Antioxidant activity of virgin olive oil phenolic compounds in a micellar system

1999 ◽  
Vol 79 (13) ◽  
pp. 1803-1808 ◽  
Author(s):  
Vincenzo Fogliano ◽  
Alberto Ritieni ◽  
Simona M Monti ◽  
Monica Gallo ◽  
Dorotea Della Medaglia ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Micellar System

scholarly journals Variations of phenolic compounds and sensory properties of virgin olive oils from the variety 'Istrska belica'

ACTA IMEKO ◽  
2016 ◽  
Vol 5 (1) ◽  
pp. 22 ◽  
Author(s):  
Milena Bucar-Miklavcic ◽  
Terezija Golob ◽  
Vasilij Valencic ◽  
Erika Bester ◽  
Bojan Butinar ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Sensory Properties ◽  
The Other ◽  
Virgin Olive Oils ◽  
Olive Oils ◽  
Olive Variety ◽  
End Stage ◽  
Positive Properties

The olive variety 'Istrska belica' is well known for its numerous positive properties, such as resistance to low temperature and high oil content. The aim was to determine the variations in the levels of phenolic compounds and sensory properties during storage of 'Istrska belica' virgin olive oil. The profile of the phenolic compounds and sensory properties of 'Istrska belica' olive oil were further compared with those for other varieties, including 'Leccino' and 'Maurino'. The content of phenolic compounds of the olive oils decreased after 1 year and 2 years of storage. After 2 years of storage, the levels of oleuropein and the ligstroside derivates significantly decreased, while the end-stage compounds tyrosol and hydroxytyrosol increased. These data show that after 1 year of storage, the 'Istrska belica' olive oil preserves similar intensities for bitterness and pungency, and similar oleuropein and ligstroside derivates levels. In contrast to the other oils analysed, the intensities of bitterness and pungency of 'Istrska belica' olive oil decreased greatly only after 2 years of storage. Moreover, the phenolic compounds content, and oleuropein and ligstroside derivates levels, and the intensities of bitterness and pungency were the highest in fresh 'Istrska belica' olive oil, compared to the other olive oils analysed. Overall, 'Istrska belica' olive oil has important advantages over olive oil from other varieties that are grown in the Istria region.

Wastes Generated during the Storage of Extra Virgin Olive Oil as a Natural Source of Phenolic Compounds

2011 ◽  
Vol 59 (21) ◽  
pp. 11491-11500 ◽  
Author(s):  
Jesus Lozano-Sánchez ◽  
Elisa Giambanelli ◽  
Rosa Quirantes-Piné ◽  
Lorenzo Cerretani ◽  
Alessandra Bendini ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Natural Source

scholarly journals Fe, Zn and Se Bioavailability in Chicken Meat Emulsions Enriched with Minerals, Hydroxytyrosol and Extra Virgin Olive Oil as Measured by Caco-2 Cell Model

Nutrients ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 969 ◽  
Author(s):  
Lorena Martínez ◽  
Gaspar Ros ◽  
Gema Nieto
Keyword(s):  
Phenolic Compounds ◽  
Olive Oil ◽  
Cell Model ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Chicken Meat ◽  
Future Research ◽  
Meat Industry ◽  
Organic Zn

There is a high demand for functional meat products due to increasing concern about food and health. In this work, Zn and Se bioavailability was increased in chicken meat emulsions that are enriched with Hydroxytyrosol (HXT), a phenolic compound obtained from olive leaf. Six different chicken emulsions were elaborated. Three were made with broiler chicken meat supplemented with inorganic Zn and Se: control, one with HXT (50 ppm) added and one with HXT (50 ppm) and Extra Virgin Olive Oil (EVOO) (9.5%) added; and, three were made with chicken meat from chickens fed a diet that was supplemented with organic Zn and Se: control, one with HXT (50 ppm) added and one with HXT (50 ppm) and EVOO (9.5%) added. The samples were digested in vitro and the percent decomposition of phenolic compounds was measured by HPLC. Mineral availability (Fe, Zn and Se) was measured by cell culture of the Caco-2 cell line and the results were compared with mineral standards (Fe, Zn, and Se). The data obtained showed that neither HXT resistance to digestion nor Fe availability was affected by the presence of organic Zn and Se or phenolic compounds. Zn uptake increased in the presence of HXT, but not when its organic form was used, while Se uptake increased but it was not affected by the presence of HXT. It was concluded that the enrichment of meat—endogenously with organic minerals and exogenously with phenolic compounds—could be considered an interesting strategy for future research and applications in the current meat industry.

Lab-On-A-Chip Extraction of Phenolic Compounds from Extra Virgin Olive Oil

2019 ◽  
Vol 13 (1) ◽  
pp. 21-34 ◽  
Author(s):  
Kenia Chávez Ramos ◽  
Luis Fernando Olguín Contreras ◽  
María del Pilar Cañizares Macías
Keyword(s):  
Phenolic Compounds ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Lab On A Chip ◽  
Extra Virgin Olive Oil

scholarly journals Phenolic compounds from virgin olive oil obtained by natural deep eutectic solvent (NADES): effect of the extraction and recovery conditions

2020 ◽  
Author(s):  
Elisa Rodríguez-Juan ◽  
Cristina Rodríguez-Romero ◽  
Juan Fernández-Bolaños ◽  
María C. Florido ◽  
Aranzazu Garcia-Borrego
Keyword(s):  
Phenolic Compounds ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Deep Eutectic Solvent ◽  
Natural Deep Eutectic Solvent

Retention effects of oxidized polyphenols during analytical extraction of phenolic compounds of virgin olive oil

2007 ◽  
Vol 30 (15) ◽  
pp. 2401-2406 ◽  
Author(s):  
Emanuele Armaforte ◽  
Vanessa Mancebo-Campos ◽  
Alessandra Bendini ◽  
Maria Desamparados Salvador ◽  
Giuseppe Fregapane ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Olive Oil ◽  
Virgin Olive Oil

scholarly journals A Functional Virgin Olive Oil Enriched with Olive Oil and Thyme Phenolic Compounds Improves the Expression of Cholesterol Efflux-Related Genes: A Randomized, Crossover, Controlled Trial

Nutrients ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1732 ◽  
Author(s):  
Farràs ◽  
Arranz ◽  
Carrión ◽  
Subirana ◽  
Muñoz-Aguayo ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Olive Oil ◽  
Cholesterol Efflux ◽  
Mononuclear Cells ◽  
Controlled Trial ◽  
Virgin Olive Oil ◽  
Double Blind ◽  
Peripheral Blood Mononuclear ◽  
Chain Reactions ◽  
Control Intervention

The consumption of antioxidant-rich foods such as virgin olive oil (VOO) promotes high-density lipoprotein (HDL) anti-atherogenic capacities. Intake of functional VOOs (enriched with olive/thyme phenolic compounds (PCs)) also improves HDL functions, but the gene expression changes behind these benefits are not fully understood. Our aim was to determine whether these functional VOOs could enhance the expression of cholesterol efflux-related genes. In a randomized, double-blind, crossover, controlled trial, 22 hypercholesterolemic subjects ingested for three weeks 25 mL/day of: (1) a functional VOO enriched with olive oil PCs (500 mg/kg); (2) a functional VOO enriched with olive oil (250 mg/kg) and thyme PCs (250 mg/kg; FVOOT), and; (3) a natural VOO (olive oil PCs: 80 mg/kg, control intervention). We assessed whether these interventions improved the expression of cholesterol efflux-related genes in peripheral blood mononuclear cells by quantitative reverse-transcription polymerase chain reactions. The FVOOT intervention upregulated the expression of CYP27A1 (P = 0.041 and P = 0.053, versus baseline and the control intervention, respectively), CAV1 (P = 0.070, versus the control intervention), and LXRβ, RXRα, and PPARβ/δ (P = 0.005, P = 0.005, and P = 0.038, respectively, relative to the baseline). The consumption of a functional VOO enriched with olive oil and thyme PCs enhanced the expression of key cholesterol efflux regulators, such as CYP27A1 and nuclear receptor-related genes.

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