Results 41 to 50 of about 51,776 (235)

A New Perspective on SPME and SPME Arrow: Formaldehyde Determination by On-Sample Derivatization Coupled with Multiple and Cooling-Assisted Extractions

open access: yesMolecules, 2023
Formaldehyde (FA) is a toxic compound and a human carcinogen. Regulating FA-releasing substances in commercial goods is a growing and interesting topic: worldwide production sectors, like food industries, textiles, wood manufacture, and cosmetics, are ...
Stefano Dugheri   +9 more
doaj   +1 more source

Headspace analysis of natural yoghurt using headspace solid phase microextraction : a thesis presented in partial fulfilment of the requirements for the degree of Master of Philosophy in Food Technology at Massey University (Turitea Campus), Palmerston North, New Zealand [PDF]

open access: yes, 2001
The Solid Phase Microextraction (SPME) method was originally developed to extract volatile and semivolatile compounds from wastewater samples but has since been applied to flavour compounds in foods and beverages.
Sivalingam-Reid, Geedha
core  

Do Governance Structures Drive Green Building Adoption? A Machine Learning Approach With Random Forests

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study examines the determinants of firms' propensity to adopt green buildings in the Euro Stoxx 300 and the S&P 500 indices, during 2012–2023. Using random forest binary classifiers, we assess the relative importance of financial, sectoral, geographic, and climate governance predictors and uncover nonlinear relationships often overlooked ...
María del Carmen Valls Martínez   +3 more
wiley   +1 more source

Chemically Mediated Arrestment of the Bed Bug, Cimex lectularius, by Volatiles Associated with Exuviae of Conspecifics. [PDF]

open access: yes, 2016
Extracts of the exuviae (cast skins) of nymphal bed bugs (Cimex lectularius) were analyzed for volatile compounds that might contribute to arrestment of adult bed bugs. Four volatile aldehydes, (E)-2-hexenal, 4-oxo-(E)-2-hexenal, (E)-2-octenal, and 4-oxo-
Choe, Dong-Hwan   +3 more
core   +6 more sources

Komponen Flavor Volatil Tempe yang Dibungkus dengan Daun Pisang dan Plastik

open access: yesAgritech, 2018
The objective of the research was to identify volatile flavor compounds and odor description of tempeh wrapped with banana leaf and plastic fermented at different times. The research object was tempeh wrapped with banana leaf (TD) at 48 (TD1H), 72 (TD2H),
Rasyid Hanafi Harahap   +2 more
doaj   +1 more source

Solid phase microextraction for quantitative analysis – Expectations beyond design?

open access: yesGreen Analytical Chemistry, 2023
Solid phase microextraction (SPME) is a convenient, effective and green sample preparation technique, offering excellent compatibility with different chromatography methods.
Yada Nolvachai   +3 more
doaj   +1 more source

Use of headspace solid-phase microextraction for the analysis and characterisation of volatile compounds in rumen contents : a thesis presented in partial fulfillment of the requirements for the degree of Masterate of Science in Chemistry at Massey University [PDF]

open access: yes, 2005
Appendix 2&3 removed due to copyright restrictions. Please consult print copy in Library.Volatile fatty acids (VFAs), alkyl phenols and indolic compounds are produced by rumen microbes during the fermentation of forages in ruminants.
Lu, Shengyi
core  

Monitoring and Mitigation Strategies for Hazardous Compounds in Chinese Rice Wine (Huangjiu): A Comprehensive Review

open access: yesFood Safety and Health, EarlyView.
This review elucidates the formation pathways and detection technologies for ethyl carbamate, biogenic amines, and higher alcohols in Huangjiu. It concludes that integrated control frameworks are essential to decouple safety risks from the metabolic processes responsible for flavor development.
Lulu Liu   +5 more
wiley   +1 more source

Chemical characterization of volatile organic compounds on animal farms

open access: yesVeterinární Medicína, 2008
More than one hundred volatile organic substances were identified by gas chromatography and mass spectrometry (GC/MS) in the indoor and outdoor air, stable and farm road dust and farm soil samples from two pig and cattle farms in the South Moravian ...
M. Ciganek, J. Neca
doaj   +1 more source

Methods to Detect Volatile Organic Compounds for Breath Biopsy Using Solid-Phase Microextraction and Gas Chromatography–Mass Spectrometry

open access: yesMolecules, 2023
Volatile organic compounds (VOCs) are byproducts from metabolic pathways that can be detected in exhaled breath and have been reported as biomarkers for different diseases.
Eray Schulz   +4 more
doaj   +1 more source

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