Results 71 to 80 of about 51,776 (235)

Solid-phase microextraction for analysis of mould cheese aroma

open access: yesCzech Journal of Food Sciences, 2006
Solid-phase microextraction coupled with gas chromatography was used for the analysis of volatile aroma compounds in Niva cheese. The extraction conditions were very mild, which minimises thermal, mechanical, or chemical modification of the sample; the ...
Eva Vítová   +5 more
doaj   +1 more source

Characterization of Genes Involved in the Formation of Aroma Volatiles in "Charentais" Melon Fruit [PDF]

open access: yes, 2004
Volatiles esters impart distinct characteristics to the fruit quality. "Charentais" cantaloupe melon (Cucumis melo "cantalupensis") is characterized by abundant sweetness and aromatic flavour.
El-Sharkawy, Islam   +4 more
core   +1 more source

Two Metschnikowia nectar yeast species have similar volatile profiles but elicit differential foraging in bee pollinators

open access: yesEcological Entomology, EarlyView.
Yeasts that specialize in flower nectar play an important role in pollination ecology. Metschnikowia reukaufii and Metschnikowia koreensis were the most prevalent nectar yeasts found in our field sites. Bee pollinators exhibited different behavioural responses to nectar yeasts in field experiments. Bees visited more flowers with M.
M. Elizabeth Moore   +8 more
wiley   +1 more source

Stopper with Interchangeable Septa for SPME [PDF]

open access: yesJournal of Chemical Education, 2009
Describes the use of round- and flat-bottom flasks and the modification of their stoppers for the analysis of volatile organic compounds by solid-phase microextraction.
Zoran Zdravkovski, Jordan Cavdarov
openaire   +1 more source

Do aphid endosymbiotic bacteria influence parasitoid searching behaviour through changes in aphid honeydew production?

open access: yesEcological Entomology, EarlyView.
Hamiltonella defensa infection increases honeydew production in certain aphid genotypes, potentially modifying aphid feeding behaviour. Parasitoid wasps, Aphidius ervi, are more attracted to honeydew from H. defensa‐infected aphids; though larger honeydew amounts may slightly deter searching.
Desiré Macheda   +5 more
wiley   +1 more source

Rhizobia–Bean Symbiosis Increases Root Herbivore Attraction and Growth via Volatile Signals and Enhanced Nutrition

open access: yesPlant, Cell &Environment, EarlyView.
ABSTRACT The symbiosis between nitrogen‐fixing rhizobia and plants is considered mutually beneficial, yet its indirect effects on other organisms remain understudied. We examined how rhizobia symbiosis in Phaseolus vulgaris influences the behaviour and performance of Diabrotica balteata larvae. Specifically, we tested larval preference for nodulated (R+
Camilo Rivera   +5 more
wiley   +1 more source

Aboveground and Belowground Insect Herbivory Changes Maize‐Wireworm Interactions via Root Volatile Cues

open access: yesPlant, Cell &Environment, EarlyView.
ABSTRACT The rhizosphere harbours critical plant‐herbivore interactions often mediated by small lipophilic molecules (SLMs). Despite the agricultural importance of many soil‐dwelling insects, surprisingly little is known about chemically mediated belowground crop‐pest interactions. Root and shoot herbivores can influence these interactions by modifying
Diego M. Magalhães   +8 more
wiley   +1 more source

Chromatography of wine [PDF]

open access: yes, 2013
The objectives of the review are the collection, concise description and evaluation of the various chromatographic technologies applied for the separation and quantitative determination of macro- and microcomponents present in ...
Cserháti, Tibor, Szőgyi, Mária
core  

Electronic Smoking Devices Among University Students: Usage Patterns and Chemical Composition of Inhaled Substances

open access: yesAnalytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT This study investigated the prevalence of electronic smoking device (ESD) use and its associated behavioural and chemical risks among university students in Bahia, Brazil. A cross‐sectional survey was conducted with 355 students from public and private institutions through an online questionnaire between April and May 2023. Among participants,
Eduard F. Valenzuela   +7 more
wiley   +1 more source

Application of SPME as a passive air sampler for inhalation exposure assessment: a case study on 2-Chlorophenol

open access: yesSalāmat-i kār-i Īrān, 2013
Background and aims: Halogeneated hydrocarbons are among the most important classes of toxic chemicals considering environmental and occupational health which can be quantified by several methods.
Mohammad Javad Zare Sakhvidi   +4 more
doaj  

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