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

Food Control ◽  
2018 ◽  
Vol 89 ◽  
pp. 133-141 ◽  
Author(s):  
Anja Mahne Opatić ◽  
Marijan Nečemer ◽  
Sonja Lojen ◽  
Jasmina Masten ◽  
Emil Zlatić ◽  
...  
2008 ◽  
Vol 123 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Elisabeth Mützel (Rauch) ◽  
Christine Lehn ◽  
Oliver Peschel ◽  
Stefan Hölzl ◽  
Andreas Roßmann

2017 ◽  
Vol 100 (4) ◽  
pp. 852-861 ◽  
Author(s):  
Uroš M Gašić ◽  
Dušanka M Milojković-Opsenica ◽  
Živoslav Lj Tešić

Abstract In recent years, the botanical and geographical origin of food has become an important topic in the context of food quality and safety, as well as consumer protection, in accordance with international standards. Finding chemical markers, especially phytochemicals, characteristic for some kind of food is the subject of interest of a significant number of researchers in the world. This paper is focused on the use of polyphenols as potential markers for the determination of botanical origin of honey. It includes a review of the polyphenols present in various honey samples and the methods for their separation and identification. Special emphasis in this paper is placed on the identification of honey polyphenols using advanced LC-MS techniques in order to find specific markers of botanical origin of honey. In this regard, this study gives an overview of the literature that describes the use of LC-MS techniques for the isolation and determination of honey polyphenols. This review focuses on the research performed in the past two decades.


2020 ◽  
Author(s):  
Mohd Noor Hidayat Adenan ◽  
Zainon Othman ◽  
Salmah Moosa ◽  
Simon Kelly ◽  
Aiman Abrahim ◽  
...  

2015 ◽  
pp. 40-43 ◽  
Author(s):  
Andreas G. Degenhardt

The isotope ratios of water, organic matter and micronutrients from food are dependent on the circumstances and sites of their origin and production. Analytical methods, based on mass spectrometry, are established for routine determination of isotopes. Differentiation between metabolic pathways of C3 and C4 plants is realizable by determination 13C/12C ratios which can distinguish and identify sucrose from pure beet (Beta vulgaris) and pure cane (Saccharum officinarum). Influenced by the worldwide hydrological cycle the isotope ratios of 2H/1H and 18O/16O vary systematically, the variations give information about geographical origin. The exemplarily determination of authenticity is demonstrated by using mass spectrometric isotope ratio evaluation for identification of plant source and geographical origin with the help of selected sugar samples with known origin.


2017 ◽  
pp. 87-91
Author(s):  
Andreas G. Degenhardt ◽  
Elke Jansen ◽  
Timo, J. Koch

Modern instrumental analytical methods for the determination of 13C/12C ratios are established to differentiate between metabolic products of C3 and C4 plants. Differentiation and identification of sucrose from pure beet (Beta vulgaris) and pure cane (Saccharum officinarum) are possible without doubt. Influenced by the worldwide hydrological cycle the determination of the isotope ratios of 2H/1H and 18O/16O as well as their variations provide information about geographical origin. Using samples of selected crystal cane sugar (CCS) with known origin, invert sugar syrups (ISS) as well as burnt sugar syrups (BSS) produced therefrom, the authenticity was determined. The speciality sugars ISS and BSS which were made from CCS could be identified as carbohydrates of C4 plants by using 13C/12C Isotope-Ratio Mass Spectrometry (IRMS). In combination with yeast fermentation of ISS and sugar separation from BSS and fermentation into ethanol as well as knowledge about production water, the C2-H/O isotope ratios of ethanol can theoretically determine the geographical origin of the sugars.


1991 ◽  
Vol 32 (8) ◽  
pp. 1311-1323
Author(s):  
KG Parhofer ◽  
P Hugh ◽  
R Barrett ◽  
DM Bier ◽  
G Schonfeld

1981 ◽  
Vol 29 (7) ◽  
pp. 2043-2050 ◽  
Author(s):  
KUNIO MIMURA ◽  
SHIGEO BABA
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document