Different tools to trace geographic origin and seasonality of croaker (Micropogonias furnieri)

Abstract

17The aim of this study was to use proximate chemical composition, amcro and trace 18 elements, fatty acid profile and stable isotopes as traceability tools to assess geographic 19 origin and seasonality of croaker (Micropogonias furnieri). Croaker from Parnaíba 20 contained higher ash in July and lower fat content than croaker from Santos. In contrast, 21 croaker from Santos had statistically higher proportion of 16:1n-9+16:1n-7, 20:1n-11, 22 20:1n-9, MUFA and n-3/n-6 ratio than croaker from Parnaíba. Concerning seasonality, 23 croaker caught in July had significantly higher amounts of 14:0, 15:0, 16:1n-9+16:1n-7 24 and saturated fatty acids than fish caught in December. Concerning elements, significant 25 differences were also detected between seasons for Cl, Ca, Fe, Sr and S, whereas 26 differences between geographic origins were only observed with K. δ 13 C and δ 15 N were 27 statistically different between geographic origins, whereas differences between seasons 28 were only detected in δ 15 N ratio of croaker from Santos. Fatty acids, minerals and stable 29 isotope are effective methods to trace geographic origin and seasonality of croaker. 30Nonetheless, further investigation is still required with larger samples of croaker to 31 enable the implementation of fatty acids, elements or stable isotope as authenticity tools 32 by food control agencies. 33 34

Stable isotope composition of cocoa beans of different geographical origin

“…More recently, 1 H NMR spectra of traded cocoa beans were used to characterise fermented cocoa beans on the basis of the variety and geographical origin. [15,16] H, C, N, O and S stable isotope ratios measured using Isotope Ratio Mass Spectrometry (IRMS) have been shown to be a reliable tool for establishing the authenticity of a wide variety of food products, such as wine, [17] olive [18] and sesame oils, [19] orange juice, [20] honey, [21] beef, [22] fish, [23,24] shrimps [25] and prawns, [26] ham, [27] milk, [28] rice, [29] lentils. [30] This is due to particular isotopic fractionation processes, which reflect both climatic phenomena (e.g.…”

Multivariate analysis to discriminate the origin of sesame seeds by multi-element analysis inductively coupled plasma-mass spectrometry

“…Principal component analysis (PCA) PCA has been frequently used to establish a classification model based on multi-element content differences among samples from different provenances (17,(23)(24)(25). To evaluate the differences among sesame seeds originated from Korea, China, and India, the concentrations of 15 elements analyzed using ICP-MS with significance at p<0.05 were subjected to PCA.…”

Investigation of geographic origin, salinity and feed on stable isotope profile of Pacific white shrimp (Litopenaeus vannamei )

“…Stable isotope and multi‐element analysis were combined and used to allow the correct differentiation of shrimp from different production methods, geographical areas, as well as among different species, prawns from different countries, and wild and farmed salmon (Anderson et al., ; Carter, Tinggi, Yang & Fry, ; Ortea & Gallardo, ). A combination of fatty acids, minerals and stable isotopes are demonstrated to be effective methods to trace geographic origin and seasonality of croaker (Chaguri et al., ).…”

“…In exploratory investigations, stable isotope analysis was successfully used in authentication of fishery and aquaculture products. For instance, carbon and nitrogen stable isotopes were used to differentiate the wild and farmed gilthead sea bream ( Sparus aurata ) and salmon, Pacific white shrimp ( Litopenaeus vannamei ) from industrial fishing, conventionally or organically farming, croaker from different geographic origins ( Micropogonias furnieri ) (Anderson, Hobbie & Smith, ; Chaguri et al., ; Gamboa‐Delgado et al., ; Ostermeyer, Molkentin, Lehmann, Rehbein & Walte, ; Serrano, Blanes & Orero, ). The method was also used to distinguish different aquaculture species and to help to elucidate the origin and spread of exotic invasive salmonids in Chile (Schröder & Leaniz, ).…”