Results 21 to 30 of about 4,516,287 (245)

Differentiated Study of Constituents between Organic Milk and Ordinary Milk by Stable Isotope Ratio and UPLC-Q-Orbitrap

open access: yesShipin gongye ke-ji, 2023
Objective: To prevent some illegal companies driven by interests from arbitrarily labeling "organic" to deceive consumers using ways such as counterfeiting, forgery, and shoddy food.
Xuemei NIE, Yun XIE, Bozhou XU, Xiuli XU
doaj   +1 more source

Stable Sr isotope (88Sr/86Sr) fractionation in calcite precious corals

open access: yesFrontiers in Marine Science, 2022
Stable isotope ratios of Sr (88Sr/86Sr) are a novel indicator for identifying terrestrial and oceanic Sr cycling and biological processes. Here we evaluate the temperature dependence of stable Sr isotope ratios (δ88Sr) in the calcite skeletons of ...
Toshihiro Yoshimura   +4 more
doaj   +1 more source

Geographical traceability of gelatin in China using stable isotope ratio analysis

open access: yesFrontiers in Nutrition, 2023
Geographical traceability is crucial to the quality and safety control of gelatin. However, currently, methods for gelatin traceability have not been established anywhere in the world.
Shuang Li   +8 more
doaj   +1 more source

A Preliminary Study to Determine the Hydrogen and Oxygen Isotopic Compositions of Natural and Bottled Water using High Sensitivity Isotope Ratio Mass Spectrometry [PDF]

open access: yesGeo Data, 2021
In this study, we introduce the stable isotopic results of water using a recently installed high sensitivity isotope ratio mass spectrometry (HS-IRMS) system at the Korea Institute of Geoscience and Mineral Resources (KIGAM).
Hyeongseok Song, Hui Je Jo, Dongwoo Yang
doaj   +1 more source

Stable Isotope Analysis of Residual Pesticides via High Performance Liquid Chromatography and Elemental Analyzer–Isotope Ratio Mass Spectrometry

open access: yesMolecules, 2022
To broaden the range of measurable pesticides for stable isotope analysis (SIA), we tested whether SIA of the anthranilic diamides cyantraniliprole (CYN) and chlorantraniliprole (CHL) can be achieved under elemental analyzer/isotope ratio mass ...
Hee Young Yun   +6 more
doaj   +1 more source

Tracing sheep binary C3–C4 diet using stable isotope ratio (δ13C)

open access: yesItalian Journal of Animal Science, 2021
Stable isotopes are an important tool to assess livestock diet in binary mixtures of C3-C4 forages. However, the use of stable isotopes to trace livestock diet using tropical arboreal legumes has been limited.
Kariny Cavalcante de Lira   +8 more
doaj   +1 more source

Stable isotope analysis provides new information on winter habitat use of declining avian migrants that is relevant to their conservation [PDF]

open access: yes, 2012
Winter habitat use and the magnitude of migratory connectivity are important parameters when assessing drivers of the marked declines in avian migrants. Such information is unavailable for most species.
Newton, J.   +11 more
core   +2 more sources

Structure and flow of carbon and nitrogen to the western Irish Sea Nephrops norvegicus fishery: a stable isotope approach. [PDF]

open access: yes, 2008
PhDStable isotope analysis was used to describe the structure and flow of organic matter (carbon and nitrogen) from primary production in the water column to the benthos, and into secondary production that supports a fishery for the lobster Nephrops ...
Hill, Jacqueline M
core   +4 more sources

Research Progress on Stable Isotope Ratio Mass Spectrometry in Baijiu [PDF]

open access: yesShipin Kexue
Baijiu has a history of over 2 000 years. It is one of the world’s six major distilled spirits and is the national liquor of China. China has a vast territory, and regional differences in aroma types and brewing methods contribute to the wide diversity ...
XIE Yuxi, ZHAO Yaqi, HONG Yuhan, ZHAO Xuan, LEI Yi
doaj   +1 more source

Stable isotope dilution techniques for assessing vitamin A status and bioefficacy of provitamin A carotenoids in humans. [PDF]

open access: yes, 2005
Vitamin A deficiency is a major global public health problem. Among the variety of techniques that are available for assessing human vitamin A status, evaluating the provitamin A nutritional values of foodstuffs and estimating human vitamin A ...
Judy D Ribaya-Mercado   +19 more
core   +1 more source

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