Results 41 to 50 of about 3,068 (170)

Evolutionary, Functional and Mechanistic Characterisation of Microbial Terpene Synthase‐Like Genes From Springtails

Angewandte Chemie International Edition, Volume 65, Issue 41, 5 October 2026.
A genome analysis revealed the presence of many bacterial‐type terpene synthases in springtails. Four enzymes from Sinella curviseta were functionally characterised, resulting in the isolation of several compounds including sinellene ether, the first diterpene ether identified from a terpene synthase that represents a novel skeleton.
Min Wang, Clement Schneider, Zarley Rebholz, Stefan Schulz, Kathy Darragh, Jeroen S. Dickschat   +5 more
wiley   +1 more source

Comprehensive mRNA and microRNA analysis revealed the effect and response strategy of freshwater fish, grass carp (Ctenopharyngodon idella) under geosmin exposure

Ecotoxicology and Environmental Safety
Geosmin is an environmental pollutant that causes off-flavor in water and aquatic products. The high occurrence of geosmin contamination in aquatic systems and aquaculture raises public awareness, however, few studies have investigated the response ...
Jun-ming Zhang, Huan Han, Yi-chao Li, Bing Fu, Gen Kaneko, Kang Li, Xi-chen Jin, Shuang Ji, Er-meng Yu, Li-ping Liu   +9 more
doaj   +1 more source

Physicochemical, Bioactive, Sensory, and Microbial Evaluation of Functional Drinking Yoghurt Fortified With Beetroot and Orange Juice

Food Science &Nutrition, Volume 14, Issue 10, October 2026.
Bioactive, sensory, and physicochemical properties of beetroot pulp and orange juice‐fortified drinking yoghurt demonstrated formulation‐dependent differences among the three formulations. Sample B exhibited the maximum seedling DPPH radical‐scavenging activity and the maximum phenolic and flavonoid content, while Sample A had the maximum sensory ...
Md Masudul Islam Khan, Md Noitik Ali, Ayshee Tabassum, Devpriya Bhattacharjee, Shahin Alam, Md Shahedul Islam   +5 more
wiley   +1 more source

Characterization of a cytochrome P450 monooxygenase gene involved in the biosynthesis of geosmin in Penicillium expansum [PDF]

, 2012
Geosmin is a terpenoid, an earthy-smelling substance associated with off-flavors in water and wine. The biosynthesis of geosmin is well characterized in bacteria, but little is known about its production in eukaryotes, especially in filamentous fungi ...
Nafees Bacha, Nafees, Puel, Olivier, Mathieu, Florence, Liboz, Thierry, Bacha, Nafees, Lebrihi, Ahmed, Siddique, Muhammad Hussnain   +6 more
core   +1 more source

Case study on depuration of RAS-produced pikeperch (Sander lucioperca) for removal of geosmin and other volatile organic compounds (VOCs) and its impact on sensory quality

, 2021
Effect of depuration on content of geosmin in pikeperch (Sander lucioperca) produced in a commercial RAS farm was examined during a 15-day period. Concentrations of geosmin in the fish were related to geosmin content in the water. For depuration, half of
Jorgensen, Niels O.G., Jørgensen, Niels O. G., Hyldig, Grethe, Martin Vestergaard, Petersen, Mikael Agerlin, Grethe Hyldig, Podduturi, Raju, Vestergaard, Martin, Raju Podduturi, Mikael Agerlin Petersen, Niels O. G. Jorgensen   +10 more
core   +1 more source

An automated micro solid phase extraction gas chromatography–mass spectrometry (μSPE-GC–MS) detection method for geosmin and 2-methylisoborneol in drinking water

Scientific Reports, 2023
Geosmin and 2-methylisoborneol (2-MIB) are amongst the most common earthy and musty taste and odour (T&O) compounds found in drinking water. With low odour threshold detection limits below 10 ng L−1, and the complexity of raw water matrices, these two ...
R. L. Bristow, A. Haworth-Duff, I. S. Young, P. Myers, M. R. Hampson, J. Williams, S. Maher   +6 more
doaj   +1 more source

Endogenous Production of Geosmin in Table Beet

, 2018
The earthy flavor of table beet is due to an aromatic terpene derivative called geosmin. It has been hypothesized that geosmin presence in beet is due to geosmin-producing bacteria such as Streptomyces spp. that exist in the soil.
Lynn Maher, Irwin L. Goldman
core   +1 more source

Development and validation of a challenge model using geosmin‐spiked feeds to obtain off‐flavor compounds in tissues of Atlantic salmon, Salmo salar

Journal of the World Aquaculture Society, Volume 57, Issue 5, October 2026.
Abstract Fish produced within recirculating aquaculture systems may develop flavors not desired by end‐consumers, hereafter “off‐flavor,” which is largely attributed to geosmin accumulation in fish tissues. To develop methods for mitigating geosmin accumulation, a reliable and reproducible method of introducing geosmin in fish tissue is needed. Current
Mariah Pearson, Robert Harrington, Gail Schwieterman, Matt Hawkyard   +3 more
wiley   +1 more source

Biosynthese des vollständig gesättigten C16‐Homosesquiterpens Descartan durch Deprotonierung mit Cyclopropanierung

Angewandte Chemie, Volume 138, Issue 38, 14 September 2026.
Eine nicht‐kanonische C16‐Sesquiterpensynthase aus Morganella morganii produziert das ungewöhnliche Grundgerüst Descartan. Ihr Cyclisierungsmechanismus wurde mittels Isotopenmarkierungsexperimenten und DFT‐Berechnungen aufgeklärt. Gezielte Mutagenese veränderte die Enzymfunktion und führte zu alternativen Produkten, darunter Voltairen, dessen ...
Kexin Yang, Philip Troycke, Bernd Goldfuss, Michael Groll, Jeroen S. Dickschat   +4 more
wiley   +1 more source

Identification, Analysis, and Removal of Geosmin from Muddy-Flavored Trout

, 1974
Geosmin has been isolated and identified, using gas-chromatographic, mass-spectrometric and organoleptic analysis, as the principal compound responsible for the muddy flavor in fish from various saline lakes in western Canada.
Jo-Anne L. Tabachek, M. Yurkowski
core   +1 more source