Determination of geographical origin of commercial tomato through analysis of stable isotopes, elemental composition and chemical markers

In the last decades, the demand for molecular tools for authenticating and tracing agri-food products has significantly increased. Food safety and quality have gained an increased interest for consumers, producers, and retailers, therefore, the availability of analytical methods for the determination of food authenticity and the detection of major adulterations takes on a fundamental role. Among the different molecular approaches, some techniques such as the molecular markers-based methods are well established, while some innovative approaches such as isothermal amplification-based methods and DNA metabarcoding have only recently found application in the agri-food sector. In this review, we provide an overview of the most widely used molecular techniques for fresh and processed agri-food authentication and traceability, showing their recent advances and applications and discussing their main advantages and limitations. The application of these techniques to agri-food traceability and authentication can contribute a great deal to the reassurance of consumers in terms of transparency and food safety and may allow producers and retailers to adequately promote their products.

Section: Analytical Methods For the Traceability And Authentication Of Food Deriving From Plant Speciesmentioning

confidence: 99%

Molecular Approaches to Agri-Food Traceability and Authentication: An Updated Review

Fanelli

Mascio

Miazzi

et al. 2021

“…Some articles, according to the type of product, are referenced below. In the category of 'plant-crops and herbs': potato [14], vegetables: lettuce, pepper, tomato [15], onions [16], rice, flour and cereals [17], oranges [18], herbs [19][20][21]. In the category of 'oils': olive oil [22][23][24].…”

Section: Published Research For Geographical Origin Authentication Frmentioning

confidence: 99%

Geographical Origin Authentication of Agri-Food Products: A Review

Katerinopoulou

Kontogeorgos

Salmas

et al. 2020

This study is a systematic literature review of geographical origin authentication by elemental analytical techniques. Authentication and certification of geographic origin of agri-food products is a useful tool toward the protection of the quality for products. The aim of this work was to map the current state of research in the area of agricultural products and food, identifying emerging fields to the geographical origin of products. The article is divided in three parts. The first part of the article deals with the analytical techniques applied in the food authentication. Special mention is made to elemental analysis and multiple isotope ratio. The second section focuses on statistically published data concerning published research for geographical origin authentication for the period 2015–2019. Specific results are presented inter alia: number of articles according to the type of product, articles according to the type of the analytical techniques, and others. The third part contains characteristic results from articles that were published in the period 2015–2019, on certification of geographical origin on specific agricultural products.

“…Various analytical techniques, including chromatographic techniques, such as gas chromatography–mass spectrometry (GC-MS) [ 5 ] or high-performance liquid chromatography (HPLC) [ 6 ], nuclear magnetic resonance (NMR) [ 7 ], ultra-violet visible spectroscopy (UV-Vis) [ 8 ], near-infrared spectroscopy (NIR) [ 9 ], inductively coupled plasma mass spectrometry (ICP-MS) [ 10 ], DNA-based techniques [ 11 ], and isotope-ratio mass spectrometry (IRMS), have been proposed for the accurate determination of food geographical origin [ 12 ]. The most widely used technique for information about geographical origin is isotope-ratio mass spectrometry (IRMS), which has been used to determine the geographical origin of various agricultural products [ 12 , 13 , 14 , 15 , 16 , 17 ]. Stable isotope analysis relies on the measurement of the isotope ratio of elements and the fact that the ratio of these elements depends on the carbon fixation process for carbon isotope; soil nutrition for nitrogen isotope; climatic conditions, latitude, and elevation for hydrogen and oxygen isotopes; and distance from the sea and soil structure for sulfur isotopes [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Stable Isotope Analysis for Detecting the Geographical Origin of the Greek Currants “Vostizza”: A Preliminary Study

Thomatou

Mazarakioti

Zotos

et al. 2023

There is a plethora of food products with geographical indications registered in the European Union without any study about their discrimination from other similar products. This is also the case for Greek currants. This paper aims to analyze if stable isotope analysis of C, N, and S could discriminate the Greek currants “Vositzza”, registered as a product of Protected Designation of Origin, from two other currants registered as products of Protected Geographical Indication coming from neighboring areas. The first results show that the stable isotope ratio of sulfur is not detectable due to the very low sulfur content in the samples, and the analysis should be based on the stable isotope ratios of carbon and nitrogen to discriminate these products. The mean value of δ15N (1.38‰) of PDO “Vostizza” currants is lower than that of currants grown outside the PDO zone (2.01‰), while the mean value of δ13C of PDO “Vostizza” currants is higher (−23.93‰) in comparison to that of currants grown outside the PDO zone (−24.83‰). Nevertheless, the results indicate that with only two isotopic ratios, discrimination could not be achieved, and further analysis is required.