Study of oils from the protected denomination of origin âSiuranaâ using excitation-emission fluorescence spectroscopy and three-way methods of analysis

Guimet, Francesca; Boqué, Ricard; Ferré, Joan

doi:10.3989/gya.2005.v56.i4.95

Cited by 18 publications

(9 citation statements)

References 16 publications

(12 reference statements)

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“…Adulteration at around 5% level was quantified, with a prediction error of 1.2% (Guimet et al, 2005a). In another study, Guimet et al (2005b) achieved discrimination between oils from the two PDO "Siurana" regions by means of discriminant unfold PLS regression, giving correct classification for 94% of samples for "Siurana-Camp" and 100% for "Siurana-Montsant" oils.…”

Section: Authentication Of Virgin Olive Oils Geographical Originmentioning

confidence: 99%

Analysis of Olive Oils by Fluorescence Spectroscopy: Methods and Applications

Sikorska¹,

Khmelinskii²,

Sikorski³

2012

Olive Oil - Constituents, Quality, Health Properties and Bioconversions

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Section: Authentication Of Virgin Olive Oils Geographical Originmentioning

confidence: 99%

Analysis of Olive Oils by Fluorescence Spectroscopy: Methods and Applications

Sikorska¹,

Khmelinskii²,

Sikorski³

2012

Olive Oil - Constituents, Quality, Health Properties and Bioconversions

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“…Although the quantitative importance of this feeding resource is still unknown, it occurs every day and involves the bulk of the birds scavenging off Cambrils and those coming from other fishing harbours. The olives provide a high energetic content but also a number of important compounds: polyphenols, vitamin E and pigments such as carotenoids and anthocyanins Mínguez-Mosquera 2001, 2003;Guimet et al 2005). These compounds are accepted to be positive for the birds' health and productivity (Blount 2004;Goñi et al 2007;Brenes et al 2008;Catoni et al 2008;Schaefer et al 2008).…”

Section: St Jordi Gulf Wintering Populationmentioning

confidence: 97%

Mediterranean Gulls Larus melanocephalus wintering along the Mediterranean Iberian coast: numbers and activity rhythms in the species’ main winter quarters

Cama

Josa

Obiol³

et al. 2011

J Ornithol

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Knowledge of the winter distribution of the Mediterranean Gull Larus melanocephalus is poor. The limited and geographically patchy data on the species' winter distribution is of concern because current estimates of the wintering population do not agree with those for the global breeding population. We assessed the winter distribution and abundance patterns of this gull in Mediterranean Iberia, a historically important wintering area for which recent data are lacking. Information for the whole study area was obtained from a systematic boat-based survey over the continental shelf in 2003. Then, particular attention was paid to St. Jordi Gulf, a known hotspot for the species, where we studied the temporal patterns in abundance throughout the winter months, and daily activity rhythms, between 2005-2006 and 2008-2009. To set our results in a global context, the available information of the winter range of the species was collated and synthesised. The results indicate that the Iberian Mediterranean coast is the main winter quarters of the species. An average population of ca. 41,000 individuals was present in the area, representing approximately half the 86,311 individuals (range 50,747-121,875) recorded across the whole of the species' winter range. At the local scale, the St. Jordi Gulf represented the most important area for the species in winter, with an average of around 17,000 individuals and peaks of up to 45,000 in early and late winter. Thus, we argue that this is a globally important area for the species. Daily rhythms involve birds moving between offshore feeding areas during the day (where they largely consume fishing discards) to inland olive crops and bathing and drinking sites (Riudecanyes reservoir) in the afternoon, and finally to coastal roost sites at dusk (Cambrils). Given the global significance of the population wintering in this small area, measures to protect Riudecanyes reservoir and the marine and inland foraging areas should be implemented as a matter of priority. Further research is needed to assess the actual population size of the Mediterranean Gull global population and its conservation status, as well as the threats that the species faces. Zusammenfassung Nur wenig ist von der Winter-Verbreitung der Schwarzkopfmöwen Larus melanocephalus bekannt; dabei sind gerade die begrenzten und geographisch nur sporadischen Verbreitungs-Daten dieser Art im Winter deshalb speziell interessant, weil die derzeitigen Schätzun-gen der Winterpopulation nicht zu denen der globalen Brutpopulation passen. Wir untersuchten das Vorkommen und Verteilungsmuster dieser Möwenart entlang der spanischen Mittelmeerküste, einem für sie schon seit langem wichtigen Ü berwinterungsgebiet. Die Daten wurden 2003 in einer systematischen Erhebung über dem Kontinentalschelf von einem Boot aus gesammelt. Daran anschließend wurde der Golf von St. Jordi, ein bekannter hotspot dieser Spezies, genauer untersucht: das zeitliche Verteilungsmuster der Möwen sowie ihr täglicher Aktivitätsrhythmus von Juni 2005 bis September 2008. Um un...

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“…Recently, fluorescence spectroscopy has become an emerging analytical technique, due to its high sensitivity and simplicity and requires little or no sample preparation. Many works have been successfully applied for authentication of olive oil [9], for the detection of adulteration of olive oil [10] [11], for the characterization of olive oil [12] and for the analysis of oxidation of olive oil [13] [14] [15].…”

Section: Introductionmentioning

confidence: 99%

Front-Face Fluorescence Using UV-LED Coupled to USB Spectrometer to Discriminate between Virgin Olive Oil from Two Cultivars

Kongbonga¹,

Hassine²,

Ghalila³

et al. 2019

FNS

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A simple setup using a 365 nm LED coupled to a USB spectrometer through an optical fibre, in a front-face fluorescence configuration, was used to investigate the ability of fluorescence spectroscopy technique to discriminate between varieties of olive oil. To achieve this task, Virgin Olive Oils (VOO) from two major Tunisian olive cultivars known as Chetoui and Chemlali were used. Spectral analysis showed a clear separation between these two VOO varieties. A one-way ANOVA attests that this discrimination is significant. The Principal Components Analyses (PCA) showed that the normalized fluorescence intensities are the good parameters for this discrimination. This observation strengthens the potential of our spectral parameters to perform reliable analysis.

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Study of oils from the protected denomination of origin âSiuranaâ using excitation-emission fluorescence spectroscopy and three-way methods of analysis

Cited by 18 publications

References 16 publications

Analysis of Olive Oils by Fluorescence Spectroscopy: Methods and Applications

Analysis of Olive Oils by Fluorescence Spectroscopy: Methods and Applications

Mediterranean Gulls Larus melanocephalus wintering along the Mediterranean Iberian coast: numbers and activity rhythms in the species’ main winter quarters

Front-Face Fluorescence Using UV-LED Coupled to USB Spectrometer to Discriminate between Virgin Olive Oil from Two Cultivars

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Study of oils from the protected denomination of origin âSiuranaâ using excitation-emission fluorescence spectroscopy and three-way methods of analysis

Cited by 18 publications

References 16 publications

Analysis of Olive Oils by Fluorescence Spectroscopy: Methods and Applications

Analysis of Olive Oils by Fluorescence Spectroscopy: Methods and Applications

Mediterranean Gulls Larus melanocephalus wintering along the Mediterranean Iberian coast: numbers and activity rhythms in the species’ main winter quarters

Front-Face Fluorescence Using UV-LED Coupled to USB Spectrometer to Discriminate between Virgin Olive Oil from Two Cultivars

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Product

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Study of oils from the protected denomination of origin âSiuranaâ using excitation-emission fluorescence spectroscopy and three-way methods of analysis