Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/107851
Title: AUTHENTICATION OF COD AND HEN EGGS FOR PRODUCTION METHOD AND GEOGRAPHIC ORIGIN USING NATURAL ISOTOPE SIGNATURES OF CARBON, NITROGEN AND STRONTIUMAILAND BORDERLANDSCAPE
Authors: BAY LIAN JIE
Keywords: Stable Isotopes, Food Authentication, IRMS, TIMS, Sampling, Monte Carlo
Issue Date: 23-Jan-2014
Citation: BAY LIAN JIE (2014-01-23). AUTHENTICATION OF COD AND HEN EGGS FOR PRODUCTION METHOD AND GEOGRAPHIC ORIGIN USING NATURAL ISOTOPE SIGNATURES OF CARBON, NITROGEN AND STRONTIUMAILAND BORDERLANDSCAPE. ScholarBank@NUS Repository.
Abstract: Food authentication ¿ the act of verifying that a food complies with its label description, and that it conforms to what is established by regulations ¿ is becoming an ever more important aspect of food quality and safety. Among the many different food authentication techniques, methods using stable isotope ratios are one of the most powerful. In this thesis, the use of stable isotope ratios to solve authenticity issues affecting seawater fish and table hen eggs was demonstrated. In particular, we evaluated (a) the use of strontium, carbon and nitrogen isotope ratios to differentiate wild from farmed seawater fish (b) the use of carbon and nitrogen isotope ratios to differentiate the production method and geographical origin of hen eggs. In addition to the food authentication examples, the following topics were explored in this thesis (a) the use of Monte Carlo simulations using standard software to optimize analytical strategies and to decide about quantitative threshold limits for analytical uncertainty and sampling uncertainty that are fit for the purpose of the investigation (b) the evaluation of a new approach to normalize measured isotope ratios (carbon and nitrogen), for comparing data within and between laboratories.
URI: http://scholarbank.nus.edu.sg/handle/10635/107851
Appears in Collections:Ph.D Theses (Open)

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