Micro-encapsulation of refined olive oil: influence of capsule wall components and the addition of antioxidant additives on the shelf life and chemical alteration

2012 ◽  
Vol 92 (13) ◽  
pp. 2689-2695 ◽  
Author(s):  
Patricia Calvo ◽  
Ángel Luís Castaño ◽  
Mercedes Lozano ◽  
David González-Gómez
Keyword(s):  
Shelf Life ◽  
Olive Oil ◽  
Capsule Wall ◽  
Chemical Alteration ◽  
Refined Olive Oil ◽  
Antioxidant Additives ◽  
Wall Components

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 Modeling the effect of heat treatment on fatty acid composition in home-made olive oil preparations

2020 ◽  
Vol 15 (1) ◽  
pp. 606-618 ◽  
Author(s):  
Dani Dordevic ◽  
Ivan Kushkevych ◽  
Simona Jancikova ◽  
Sanja Cavar Zeljkovic ◽  
Michal Zdarsky ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Fatty Acids ◽  
Fatty Acid ◽  
Olive Oil ◽  
Heating Temperature ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Fatty Acid Profiles ◽  
Refined Olive Oil ◽  
Cross Correlation Analysis

AbstractThe aim of this study was to simulate olive oil use and to monitor changes in the profile of fatty acids in home-made preparations using olive oil, which involve repeated heat treatment cycles. The material used in the experiment consisted of extra virgin and refined olive oil samples. Fatty acid profiles of olive oil samples were monitored after each heating cycle (10 min). The outcomes showed that cycles of heat treatment cause significant (p < 0.05) differences in the fatty acid profile of olive oil. A similar trend of differences (p < 0.05) was found between fatty acid profiles in extra virgin and refined olive oils. As expected, the main differences occurred in monounsaturated fatty acids (MUFAs) and polyunsaturated fatty acids (PUFAs). Cross-correlation analysis also showed differences between the fatty acid profiles. The most prolific changes were observed between the control samples and the heated (at 180°C) samples of refined olive oil in PUFAs, though a heating temperature of 220°C resulted in similar decrease in MUFAs and PUFAs, in both extra virgin and refined olive oil samples. The study showed differences in fatty acid profiles that can occur during the culinary heating of olive oil. Furthermore, the study indicated that culinary heating of extra virgin olive oil produced results similar to those of the refined olive oil heating at a lower temperature below 180°C.

1H NMR-Based Protocol for the Detection of Adulterations of Refined Olive Oil with Refined Hazelnut Oil

2009 ◽  
Vol 57 (24) ◽  
pp. 11550-11556 ◽  
Author(s):  
Luisa Mannina ◽  
Marco D’Imperio ◽  
Donatella Capitani ◽  
Serge Rezzi ◽  
Claude Guillou ◽  
...  
Keyword(s):  
Olive Oil ◽  
1H Nmr ◽  
Hazelnut Oil ◽  
Refined Olive Oil

scholarly journals Impact of mineral and organic absorbent during the discoloration of avocado oil by comparing with olive oil

2021 ◽  
Vol 16 (2) ◽  
pp. 113-121
Author(s):  
Orléans Ngomo ◽  
Joseph Sieliechi ◽  
Etienne Dongo
Keyword(s):  
Activated Carbon ◽  
Shelf Life ◽  
Olive Oil ◽  
Nutritional Quality ◽  
The Other ◽  
Added Value ◽  
Avocado Oil ◽  
Before And After ◽  
Valuable Product ◽  
Cie Lab

Avocado is a versatile and valuable product. Its oil is comparable to olive oil in terms of nutritional quality. It can also be used in cosmetics, in particular, in soaps, shampoos and lotions. Despite all these important attributes that avocado has, it is highly perishable and coupled with the lack of farm-to-market roads, a lot of it is lost after harvest during the peak season. The introduction of methods that will transform avocado to products with a long shelf life and added value will go a long way to solving the problem of post-harvest losses and poverty. One of these methods is the production of avocado oil. In addition, in order to reduce the colour of the pigments without altering their quality, discoloration tests were carried out by adsorption on bleaching grounds (a montmorillonite, a kaolinite and activated carbon). The colour intensities of the oils before and after adsorption were determined using two complementary methods: a UV-Vis spectrophotometer and a Konica Minolta spectrophotometer CM-5. The UV-Vis spectrophotometer show that the activated carbon has a best fixing capacity of the pigments; According to the Colorimetric parameters (CIE-Lab) the coordinates L* a* b* that showed brightness (L*) of the avocado oil was half of the olive oil (41.13±0.02 vs 84.85±0.02). The activated carbon was better in fixing the red (a*) (4.99±0.01vs 15.73±0.01 before adsorption) and yellow (b*) (63.71±0.09 vs 70.07±0.09 before adsorption) pigments, while the other two adsorbents have very little influence on the red colour of avocado oil. RésuméL’avocat est un produit versatile et de grande valeur. Son huile est comparable à huile d’olive en terme de qualité nutritionnelle ; elle peut également être utilisée en cosmétique en occurrence dans les savons, champoings et lotions. En pleine saison, l’on fait face à une abondance des avocats dans les zones de production qui sont très souvent enclavées ; c’est ainsi que face aux difficultés de transport et les routes peu praticables pour l’importation, l’on se retrouve en train de perdre de très importantes quantités d’avocats après les récoltes. Or la production d’huile d’avocats permettrait de réduire les pertes post récolte, réduirait le chômage et permettrait de lutter contre la pauvreté après la vente des huiles extraites. De plus, dans le but de réduire les pigments colorés, des tests de décolorations effectués par adsorption sur des terres décolorantes (une montmorillonite en provenance de Maroua, une kaolinite en provenance de Douala et le charbon actif) sont effectués. Les couleurs des huiles mesurées avant et après adsorption à l’aide deux appareils complémentaires : Le spectrophotomètre UV-Vis et du Konica Minolta spectrophotomètre CM-5 montrent. Les analyses spectrophotométriques UV-Vis montrent que c’est le charbon activé qui présente la meilleure adsorption des pigments ; D’après les coordonnées L*a*b*, la clarté de l’huile d’avocat est pratiquement la moitié de celle de l’huile d’olive (41,13±0,02 contre 84,85±0,02), le charbon activé fixe mieux les pigments rouges (a*) (4,99±0,01 contre 15,73±0,01 avant adsorption) et jaunes (b*) (63,71±0,09 contre 70,07±0,09 après adsorption), tandis que les deux autres adsorbants influencent très peu sur la coloration des huiles.

The amounts of oxidized and oligopolymeric triacylglycerols in refined olive oil as a function of crude oil oxidative level

LWT ◽  
2012 ◽  
Vol 45 (2) ◽  
pp. 186-190 ◽  
Author(s):  
Tommaso Gomes ◽  
Francesco Caponio ◽  
Viviana Durante ◽  
Carmine Summo ◽  
Vito Michele Paradiso
Keyword(s):  
Crude Oil ◽  
Olive Oil ◽  
Refined Olive Oil

E-nose, e-tongue and e-eye for edible olive oil characterization and shelf life assessment: A powerful data fusion approach

Talanta ◽  
2018 ◽  
Vol 182 ◽  
pp. 131-141 ◽  
Author(s):  
Susanna Buratti ◽  
Cristina Malegori ◽  
Simona Benedetti ◽  
Paolo Oliveri ◽  
Gabriella Giovanelli
Keyword(s):  
Data Fusion ◽  
Shelf Life ◽  
Olive Oil ◽  
Life Assessment ◽  
Oil Characterization ◽  
Fusion Approach

Shelf-life evaluation of virgin olive oil extracted from olives subjected to nonthermal pretreatments for yield increase

2017 ◽  
Vol 40 ◽  
pp. 52-57 ◽  
Author(s):  
V. Andreou ◽  
G. Dimopoulos ◽  
Z. Alexandrakis ◽  
G. Katsaros ◽  
D. Oikonomou ◽  
...  
Keyword(s):  
Shelf Life ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Yield Increase ◽  
Life Evaluation
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