Carbon stable isotope signatures can effectively trace food sources, elucidate trophic interactions, and presumably reflect food web structure. The present study conducted a dietswitch experiment using freshwater teleost grass carp Ctenopharyngodon idella cultured for 3 mo with artificial feed that had a distinct carbon stable isotope composition. Turnover and fractionation of carbon stable iso...

Mass spectrometry has served as a major tool for the discipline of proteomics to catalogue proteins in an unprecedented scale. With chemical and metabolic techniques for stable isotope labeling developed over the past decade, it is now routinely used as a method for relative quantification to provide valuable information on alteration of protein abundance in a proteome-wide scale. More recently...

Carbon and oxygen isotope values of ancient pedogenic carbonates reflect the paleoenvironmental conditions under which formed. are commonly used to reconstruct pCO2, C3 vs. C4 plant types, carbon cycle dynamics. Oxygen same have been past temperatures elevations. In geologic record, changes in these can be difficult interpret because they affected by a suite multiple local (e.g. precipitation t...

Stable isotope ratio analysis (SIRA) of the socalled bioelements (H,C,N,O,S) and the heavy element strontium is applied for food authenticity control and for geographical origin assignment of food products since about 30 years. The first official methods eg for honey and fruit juices have been acknowledged in 1978 and 1981 by AOAC. In 1990 the EU decided to install an official database for wine...