Results 21 to 30 of about 116,124 (306)

No influence of CO2 on stable isotope analyses of soil waters with OA-ICOS [PDF]

open access: yes, 2017
Acknowledgements We are thankful for the support by Audrey Innes with the stable isotope, LOI, and GWC analysis. We thank Jonathan Dick for suggesting that we use sparkling water to generate different CO2 concentrations in the headspace and Claire ...
Allison   +29 more
core   +1 more source

Application of The Headspace - Needle Trap Device Based on Molecularly Imprinted Polymer for Co-Extraction of Two Volatile Biomarkers in Urine [PDF]

open access: yesبهداشت و ایمنی کار, 2023
Introduction: Several extraction techniques have been developed in recent years to determine the concentration of volatile metabolites in a biological sample.
Masoomeh Vahabi Shekarloo   +2 more
doaj  

Chemical Composition of Fresh Leaves Headspace Aroma and Essential Oils of Four Coriander Cultivars

open access: yesFrontiers in Plant Science, 2022
Aroma is one of the key food characteristics determining consumers’ perception and acceptability of products. Coriandrum sativum L. is an aromatic herb commonly used as a food additive and taste enhancer.
Sunjeet Kumar   +9 more
doaj   +1 more source

Hydrogen photo-production by mixotrophic cultivation of chlamydomonas reinhardtii: Interaction between organic carbon and nitrogen [PDF]

open access: yes, 2014
Hydrogen photo-production by a wild type and two engineered strains of Chlamydomonas reinhardtii was investigated. Growth rate values and hydrogen yields attained as the concentration of acetate and nitrogen vary were compared.
Altimari, Pietro   +4 more
core   +1 more source

Rapid and Sensitive Analysis of Volatile Components of Different Parts of Clausena lansium by Ionic Liquid Based Headspace Gas Chromatography-Mass Spectrometry

open access: yesMolecules, 2018
A rapid and sensitive ionic liquid (IL) based headspace gas chromatography-mass spectrometry (HS-GC-MS) method was developed for analyzing volatile components in leaf, pericarp, and seed of Clausena lansium from different areas in Hainan Province, China.
Xiaowen He   +6 more
doaj   +1 more source

Marine plastic debris emits a keystone infochemical for olfactory foraging seabirds. [PDF]

open access: yes, 2016
Plastic debris is ingested by hundreds of species of organisms, from zooplankton to baleen whales, but how such a diversity of consumers can mistake plastic for their natural prey is largely unknown.
Ebeler, Susan E   +3 more
core   +2 more sources

Headspace Gas Chromatography Coupled to Mass Spectrometry and Ion Mobility Spectrometry: Classification of Virgin Olive Oils as a Study Case

open access: yesFoods, 2020
Due to its multiple advantages, ion mobility spectrometry (IMS) is being considered as a complementary technique to mass spectrometry (MS). The goal of this work is to investigate and compare the capacity of IMS and MS in the classification of olive oil ...
María García-Nicolás   +4 more
doaj   +1 more source

A fast ethanol assay to detect seed deterioration [PDF]

open access: yes, 2012
The most common way to test seed quality is to use a simple and reliable but time- and space-consuming germination test. In this paper we present a fast and simple method to analyse cabbage seed deterioration by measuring ethanol production from ...
Buckley, W.T.   +5 more
core   +2 more sources

Nitrous oxide consumption potentials of well-drained forest soils in Southern Québec, Canada. [PDF]

open access: yes, 2010
To establish the major controls on N2O consumption by forest soils, we conducted laboratory incubations of 16 samples from four soil types, two organic and two mineral, varying in overlying forest vegetation (sugar maple, American beech and eastern ...
Frasier, Rebeccah   +2 more
core   +1 more source

Comparison of the Chemical and Sensorial Evaluation of Dark Chocolate Bars

open access: yesApplied Sciences, 2021
As it mimics olfactory perception, headspace analysis is frequently used for examination of products like chocolate, in which aroma is a key feature. Chemical analysis by itself, however, only provides half the picture, as final consumer’s perception ...
Ylenia Pieracci   +3 more
doaj   +1 more source

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