Stable Isotope Analysis for the Discrimination of the Geographical Origin of Greek Bottarga ‘Avgotaracho Messolongiou’: A Preliminary Research

Thomatou, Anna-Akrivi; Psarra, Eleni; Mazarakioti, Eleni C.; Katerinopoulou, Katerina; Tsirogiannis, Georgios; Zotos, Anastasios; Kontogeorgos, Achilleas; Patakas, Angelos; Ladavos, Athanasios

doi:10.3390/foods11192960

Cited by 7 publications

(5 citation statements)

References 42 publications

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“…where Rsample and Rstandard are the 13 C/ 12 C ratio of the sample and standard (V-PDB) respectively. The results were normalized to VPDB using ΙΑΕΑ-600 (Caffeine, IAEA, Vienna, Austria), with assigned carbon isotope delta values and standard uncertainties (δ 13 CV-PDB = −27.77‰ ± 0.043‰) [56].…”

Section: Environmental Parameters and Tree Growth Patternmentioning

confidence: 99%

The Ecophysiological Response of Olive Trees under Different Fruit Loads

Kokkotos,

Zotos,

Patakas

2024

Life

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Olive trees have a unique reproductive pattern marked by biennial fruiting. This study examined the repercussions of alternate fruit bearing on the water relations of olive trees and the associated ecophysiological mechanisms. The experiment spanned two consecutive years: the “ON” year, characterized by a high crop load, and the “OFF” year, marked by minimal fruit production. Key ecophysiological parameters, including sap flow, stomatal conductance, and photosynthetic rate, were monitored in both years. Pre-dawn water potential was measured using continuous stem psychrometers and the pressure chamber technique. Biochemical analyses focused on non-structural carbohydrate concentrations (starch, sucrose, and mannitol) and olive leaves’ carbon-stable isotope ratio (δ13C). Results revealed a higher leaf gas exchange rate during the “ON” year, leading to an average 29.3% increase in water consumption and a 40.78% rise in the photosynthetic rate. Higher water usage during the “ON” year resulted in significantly lower (43.22% on average) leaf water potential. Sucrose and starch concentrations were also increased in the “ON” year, while there were no significant differences in mannitol concentration. Regarding the carbon-stable isotope ratio, leaves from the “OFF” year exhibited significantly higher δ13C values, suggesting a higher resistance to the CO2 pathway from the atmosphere to carboxylation sites compared to the “ON” year plants.

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Section: Environmental Parameters and Tree Growth Patternmentioning

confidence: 99%

The Ecophysiological Response of Olive Trees under Different Fruit Loads

Kokkotos,

Zotos,

Patakas

2024

Life

Self Cite

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“…Interestingly, Chen et al [45] and Thomatou et al [46] analyzed the stable isotopic composition of the highly valuable mullet (Mugilidae fish family) roes, which are produced from salt-drying of mullet eggs. Despite the products being processed, the authors verified that isotopic information of the raw material was maintained, allowing for the identification of the final products by their geographical origin and production method.…”

Section: Fish and Seafoodmentioning

confidence: 99%

Isotope Fingerprinting as a Backup for Modern Safety and Traceability Systems in the Animal-Derived Food Chain

et al. 2023

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In recent years, due to the globalization of food trade and certified agro-food products, the authenticity and traceability of food have received increasing attention. As a result, opportunities for fraudulent practices arise, highlighting the need to protect consumers from economic and health damages. In this regard, specific analytical techniques have been optimized and implemented to support the integrity of the food chain, such as those targeting different isotopes and their ratios. This review article explores the scientific progress of the last decade in the study of the isotopic identity card of food of animal origin, provides the reader with an overview of its application, and focuses on whether the combination of isotopes with other markers increases confidence and robustness in food authenticity testing. To this purpose, a total of 135 studies analyzing fish and seafood, meat, eggs, milk, and dairy products, and aiming to examine the relation between isotopic ratios and the geographical provenance, feeding regime, production method, and seasonality were reviewed. Current trends and major research achievements in the field were discussed and commented on in detail, pointing out advantages and drawbacks typically associated with this analytical approach and arguing future improvements and changes that need to be made to recognize it as a standard and validated method for fraud mitigation and safety control in the sector of food of animal origin.

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Section: Measurement Of Carbon Stable Isotope Ratiomentioning

confidence: 99%

Ecophysiological Response of Olive Trees under Different Fruit Load

Kokkotos,

Zotos,

Patakas

2023

Preprint

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Olive trees have a unique reproductive pattern marked by biennial fruiting. This study delves into the repercussions of alternate fruit bearing on the water relations of olive trees and the associated ecophysiological mechanisms. The experiment spanned two consecutive years: the "ON" year, characterized by a high crop load, and the "OFF" year, marked by minimal fruit production. Key ecophysiological parameters, including sap flow, stomatal conductance, and photosynthetic rate, were monitored in both years. Pre-dawn water potential was measured using continuous stem psychrometers and the pressure chamber technique. Biochemically, non-structural carbohydrate concentrations (starch, sucrose, and mannitol) and the carbon-stable isotope ratio (δ13C) in olive leaves were examined. Results unveiled heightened leaf gas exchange during the "ON" year, leading to increased water consumption and photosynthetic rates. This escalated water usage during the "ON" year significantly reduced leaf water potential. Sucrose and starch concentrations were notably elevated in the "ON" year, with no significant impact on mannitol concentration. Regarding the carbon stable isotope ratio, leaves from the "OFF" year exhibited significantly higher δ13C abundance, indicative of heightened resistance to the CO2 pathway from the atmosphere to carboxylation sites compared to the "ON" year plants.

show abstract

Stable Isotope Analysis for the Discrimination of the Geographical Origin of Greek Bottarga ‘Avgotaracho Messolongiou’: A Preliminary Research

Cited by 7 publications

References 42 publications

The Ecophysiological Response of Olive Trees under Different Fruit Loads

The Ecophysiological Response of Olive Trees under Different Fruit Loads

Isotope Fingerprinting as a Backup for Modern Safety and Traceability Systems in the Animal-Derived Food Chain

Ecophysiological Response of Olive Trees under Different Fruit Load

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