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Multigas Identification by Temperature-Modulated Operation of a Single Anodic Aluminum Oxide Gas Sensor Platform and Deep Learning Algorithm.
ACS Sens
January 2025
Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea.
Semiconductor metal oxide (SMO) gas sensors are gaining prominence owing to their high sensitivity, rapid response, and cost-effectiveness. These sensors detect changes in resistance resulting from oxidation-reduction reactions with target gases, responding to a variety of gases simultaneously. However, their inherent limitations lie in selectivity.
View Article and Find Full Text PDFUrinary odor molecules in the Otassha Study can distinguish patients with sarcopenia: A pilot study.
Geriatr Gerontol Int
January 2025
Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan.
Aim: To identify sarcopenia markers in urinary odor.
Methods: We performed solid-phase microextraction from the headspace and gas chromatography-mass spectrometry analysis of urinary volatile organic compounds (VOCs) in 71 healthy individuals and 68 patients diagnosed with sarcopenia according to the Asian Working Group on Sarcopenia 2019 criteria. The mass-to-charge ratios (m/z) of 10 VOCs with a significant difference in the total ion chromatogram of 220 VOCs detected in this study were compared by U-test.
Characterization of Volatile Compounds in Mozzarella Cheeses Made from Bovine and Buffalo Milk by SPME-GC×GC-O-TOFMS, SPME-Arrow-GC-MS and GC-IMS.
J Dairy Sci
January 2025
Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing 100048, China. Electronic address:
High moisture Mozzarella cheese is particularly popular because of its freshness and milky flavor, however the difference in aroma compound composition between high moisture Mozzarella cheese made from bovine (BOC) and buffalo milk (BUC) remains unclear. Herein, the volatile compounds of 2 kinds of Mozzarella cheese were qualitatively and quantitatively analyzed by SPME-GC × GC-O-TOFMS, SPME-Arrow-GC-MS and GC-IMS for the first time. A total of 139 volatile compounds were identified (69 aroma active compounds were sniffed), of which 106 were identified in BOC and 96 in BUC.
View Article and Find Full Text PDFChanges in volatile, key odorants and bioactive properties of pomegranate juice during processing into concentrate.
Food Chem
January 2025
Department of Food Engineering, Faculty of Engineering, Cukurova University, 01330 Adana, Türkiye. Electronic address:
Key odorants of juices of pomegranate fruits of Hicaz variety obtained from different juice production stages (fresh: FrPJ, pasteurized: PPJ, filtered: FiPJ, and concentrated: CPJ) were examined. Processing significantly impacted the volatile compounds. The FrPJ and PPJ samples had higher concentrations of aroma compounds than the FiPJ and CPJ samples.
View Article and Find Full Text PDFEffects of Atmospheric Pollutants on Volatile-Mediated Insect Ecosystem Services.
Glob Chang Biol
January 2025
Department of Environmental and Biological Sciences, Faculty of Science, Forestry and Technology, University of Eastern Finland, Kuopio, Finland.
Primary and secondary atmospheric pollutants, including carbon monoxide (CO), carbon dioxide (CO), nitrogen oxides (NO), ozone (O), sulphur dioxide (SO) and particulate matter (PM/PM) with associated heavy metals (HMs) and micro- and nanoplastics (MPs/NPs), have the potential to influence and alter interspecific interactions involving insects that are responsible for providing essential ecosystem services (ESs). Given that insects rely on olfactory cues for vital processes such as locating mates, food sources and oviposition sites, volatile organic compounds (VOCs) are of paramount importance in interactions involving insects. While gaseous pollutants reduce the lifespan of individual compounds that act as olfactory cues, gaseous and particulate pollutants can alter their biosynthesis and emission and exert a direct effect on the olfactory system of insects.
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