Development of Methods for Olive Oil Quality Evaluation

2012 ◽  
pp. 137-150
Author(s):  
María Jesús Lerma García
Keyword(s):  
Olive Oil ◽  
Quality Evaluation ◽  
Oil Quality ◽  
Olive Oil Quality

scholarly journals The Panel Test as the Metrology of Extra Virgin Olive Oil Quality Evaluation and Its Dissemination

2014 ◽  
Vol 4 (4) ◽  
Author(s):  
Maurizio Caciotta ◽  
Sabino Giarnetti ◽  
Fabio Leccese ◽  
Barbara Orioni ◽  
Marco Oreggia ◽  
...  
Keyword(s):  
Olive Oil ◽  
Quality Evaluation ◽  
Oil Quality ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Olive Oil Quality ◽  
Panel Test

scholarly journals Mild separation system for olive oil: quality evaluation and pilot plant design

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
Francesco Genovese ◽  
Giovanni Carlo Di Renzo ◽  
Giuseppe Altieri ◽  
Antonella Tauriello
Keyword(s):  
Olive Oil ◽  
Quality Evaluation ◽  
Oil Quality ◽  
Residual Water ◽  
Plant Design ◽  
Separation System ◽  
Plant Oil ◽  
Total Polyphenols ◽  
Olive Oil Quality ◽  
Innovative Process

The entire process of olive oil extraction involves the breakage of olive fruits to obtain a paste, the kneading of the paste, a centrifugation, and a further cleaning, performed by a disc stack centrifuge, to separate the residual water. In this research, in order to evaluate the effect of final centrifugal separation on olive oil quality and to both define and design the settings of a innovative separation system, olive oil was separated off from water using an accelerated separation process, tested in comparison with a disc centrifuge. The laboratory plant used for the trials was constituted by a twin cylindrical separator equipped with 4 variable frequency inverters, in order to regulate the fluid flow rates in the plant. Oil samples were collected during the trials to evaluate the influence of the proposed innovative process on oil quality; measuring some parameters as free acidity, peroxides (PV), specific extinction coefficients K232 and K270, chlorophylls , carotenoids, total polyphenols (POL) and turbidity. Results showed statistically significant differences (p-values<0.05) in some parameters as POL, PV, and ultraviolet absorption K232 and K270.

scholarly journals The Panel Test as the Metrology of Extra Virgin Olive Oil Quality Evaluation and Its Dissemination

2014 ◽  
Vol 4 (4) ◽  
Author(s):  
Maurizio Caciotta ◽  
Sabino Giarnetti ◽  
Fabio Leccese ◽  
Barbara Orioni ◽  
Marco Oreggia ◽  
...  
Keyword(s):  
Olive Oil ◽  
Quality Evaluation ◽  
Oil Quality ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Olive Oil Quality ◽  
Panel Test

Irrigation effects on phenolic profile and extra virgin olive oil quality of ''Chemlali'' variety grown in South Tunisia

2021 ◽  
Vol 141 ◽  
pp. 322-329
Author(s):  
Jihed Faghim ◽  
Mbarka Ben Mohamed ◽  
Mohamed Bagues ◽  
Kamel Nagaz ◽  
Tebra Triki ◽  
...  
Keyword(s):  
Olive Oil ◽  
Oil Quality ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Phenolic Profile ◽  
Olive Oil Quality ◽  
Irrigation Effects ◽  
South Tunisia

scholarly journals Identification and Quantification of Olive Oil Quality Parameters Using an Electronic Nose

Agriculture ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 674
Author(s):  
Nawaf Abu-Khalaf
Keyword(s):  
Olive Oil ◽  
Electronic Nose ◽  
Chemical Sensor ◽  
Chemical Constituents ◽  
Oil Quality ◽  
Quality Parameters ◽  
Signal Acquisition ◽  
Good Precision ◽  
Olive Oil Quality ◽  
Quality Categories

An electronic nose (EN), which is a kind of chemical sensor, was employed to check olive oil quality parameters. Fifty samples of olive oil, covering the four quality categories extra virgin, virgin, ordinary virgin and lampante, were gathered from different Palestinian cities. The samples were analysed chemically using routine tests and signals for each chemical were obtained using EN. Each signal acquisition represents the concentration of certain chemical constituents. Partial least squares (PLS) models were used to analyse both chemical and EN data. The results demonstrate that the EN was capable of modelling the acidity parameter with a good performance. The correlation coefficients of the PLS-1 model for acidity were 0.87 and 0.88 for calibration and validation sets, respectively. Furthermore, the values of the standard error of performance to standard deviation (RPD) for acidity were 2.61 and 2.68 for the calibration and the validation sets, respectively. It was found that two principal components (PCs) in the PLS-1 scores plot model explained 86% and 5% of EN and acidity variance, respectively. PLS-1 scores plot showed a high performance in classifying olive oil samples according to quality categories. The results demonstrated that EN can predict/model acidity with good precision. Additionally, EN was able to discriminate between diverse olive oil quality categories.

scholarly journals Research on the Impact of Temperature on Change in Olive Oil Quality

2020 ◽  
Vol 6 (2) ◽  
pp. 249-259
Author(s):  
Paula Sliva ◽  
Marinela Mandić ◽  
Jasna Bošnir ◽  
Sonja Serdar ◽  
Anna Pierobon ◽  
...  
Keyword(s):  
Olive Oil ◽  
Oil Quality ◽  
Olive Oil Quality ◽  
The Impact

Maslinovo ulje visokovrijedna je i kvalitetna namirnica te osnova svake mediteranske prehrane, ali i šire. Sama kvaliteta maslinova ulja, osim načina proizvodnje, uvjetovana je i načinom čuvanja. Svjesni smo činjenice da su maslinova ulja često izložena utjecaju svjetlosti i visokim temperaturama, koje znatno mogu utjecati na njegovu kvalitetu, kako kod proizvođača i distributera tako i kod samih potrošača. Cilj je ovoga rada u laboratorijskim uvjetima simulirati uvjete temperaturnih režima te duljine ekspozicije maslinovih ulja, prateći njihov utjecaj na parametre kvalitete ulja kao što su ukupna kiselost ulja, peroksidni broj, K-broj te promjenu sastava masnih kiselina, uključujući i promjenu senzorskih svojstava. Analizama je utvrđeno da temperatura i način skladištenja imaju znatan utjecaj na promjenu kvalitete ulja, osobito kada je riječ o ukupnoj kiselosti ulja i peroksidnom broju. Stoga je od iznimne važnosti da se ulje skladišti u prikladnoj ambalaži, odnosno tamnim staklenim bocama te da se skloni od utjecaja direktnih Sunčevih zraka i visoke temperature.

Cherry leafroll virus: Impact on olive fruit and virgin olive oil quality

2012 ◽  
Vol 114 (5) ◽  
pp. 535-541 ◽  
Author(s):  
Sara Godena ◽  
Alessandra Bendini ◽  
Elisa Giambanelli ◽  
Lorenzo Cerretani ◽  
Damir Ðermić ◽  
...  
Keyword(s):  
Olive Oil ◽  
Oil Quality ◽  
Virgin Olive Oil ◽  
Olive Fruit ◽  
Olive Oil Quality ◽  
Leafroll Virus

Effects of the Planting Density on Virgin Olive Oil Quality of “Chemlali” Olive Trees (Olea europaeaL.)

2010 ◽  
Vol 58 (23) ◽  
pp. 12469-12472 ◽  
Author(s):  
Mokhtar Guerfel ◽  
Chokri Zaghdoud ◽  
Khaled Jebahi ◽  
Dalenda Boujnah ◽  
Mokhtar Zarrouk
Keyword(s):  
Olive Oil ◽  
Oil Quality ◽  
Virgin Olive Oil ◽  
Planting Density ◽  
Olive Oil Quality ◽  
Olive Trees
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