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Journal articles on the topic 'Composés volatils'

Author: Grafiati

Published: 12 October 2024

Last updated: 31 July 2025

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1

Filipiak, Wojciech, Matthias Wenzel, Clemens Ager, et al. "Molecular Analysis of Volatile Metabolites Synthesized by Candida albicans and Staphylococcus aureus in In Vitro Cultures and Bronchoalveolar Lavage Specimens Reflecting Single- or Duo-Factor Pneumonia." Biomolecules 14, no. 7 (2024): 788. http://dx.doi.org/10.3390/biom14070788.

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Current microbiological methods for pneumonia diagnosis require invasive specimen collection and time-consuming analytical procedures. There is a need for less invasive and faster methods to detect lower respiratory tract infections. The analysis of volatile metabolites excreted by pathogenic microorganisms provides the basis for developing such a method. Given the synergistic role of Candida albicans in increasing the virulence of pathogenic bacteria causing pneumonia and the cross-kingdom metabolic interactions between microorganisms, we compare the emission of volatiles from Candida albican

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2

Magaña, Lizeth O., Parvathy Prem, Ariel N. Deutsch, et al. "Surface Roughness at the Moon’s South Pole: The Influence of Condensed Volatiles on Surface Roughness at the Moon’s South Pole." Planetary Science Journal 5, no. 2 (2024): 30. http://dx.doi.org/10.3847/psj/ad18da.

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Abstract Condensed volatiles within lunar permanently shadowed regions are of high scientific and resource utilization importance. Volatiles remain elusive and difficult to observe directly, due to low direct solar illumination. In this work, we investigate correlations between, as well as possible effects of, condensed volatiles and surface roughness. We analyze topographic roughness at 50 m and 30–120 m baselines of the lunar south pole (poleward of 85° S). We focus on six south polar craters of interest and their directly surrounding non-cold-trap areas: Faustini, Shoemaker, Haworth, Cabeus

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3

Revadi, Santosh V., Vito Antonio Giannuzzi, Ramesh R. Vetukuri, William B. Walker, and Paul G. Becher. "Larval response to frass and guaiacol: detection of an attractant produced by bacteria from Spodoptera littoralis frass." Journal of Pest Science 94, no. 4 (2021): 1105–18. http://dx.doi.org/10.1007/s10340-021-01352-9.

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AbstractLarval frass in herbivorous lepidopterans is mainly composed of plant-derived material and microbes from the gut. Despite the fact that frass from conspecific larvae repels female moths in Spodoptera littoralis from oviposition, the role of frass volatiles on larval foraging behavior is largely unknown. Here, we show that larvae of S. littoralis walk upwind to larval frass volatiles in a wind tunnel assay. We identified the frass volatile guaiacol (2-methoxyphenol) as key ligand for the S. littoralis odorant receptor (OR) SlitOr59 which we expressed heterologously. We isolated guaiacol

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4

Osei-Owusu, Jonathan, William K. Heve, Owusu Fordjour Aidoo, et al. "Repellency Potential, Chemical Constituents of Ocimum Plant Essential Oils, and Their Headspace Volatiles against Anopheles gambiae s. s., Malaria Vector." Journal of Chemistry 2023 (July 14, 2023): 1–12. http://dx.doi.org/10.1155/2023/3848998.

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African malaria mosquitoes (Anopheles gambiae sensu stricto) transmit a malaria parasite (Plasmodium falciparum) to humans. The current control strategies for the vector have mainly focussed on synthetic products, which negatively impact the environment and human health. Given the potential use of environmentally friendly plant-derived volatiles as a control, this work aims to examine and compare the repellency potential of essential oils and headspace volatiles from Ocimum gratissimum, Ocimum tenuiflorum, and Ocimum basilicum and their chemical compositions. The repellency potential and chemi

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Mülner, Pascal, Alessandro Bergna, Philipp Wagner, et al. "Microbiota Associated with Sclerotia of Soilborne Fungal Pathogens – A Novel Source of Biocontrol Agents Producing Bioactive Volatiles." Phytobiomes Journal 3, no. 2 (2019): 125–36. http://dx.doi.org/10.1094/pbiomes-11-18-0051-r.

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Soilborne plant pathogens are an increasing problem in modern agriculture, and their ability to survive long periods in soil as persistent sclerotia makes control and treatment particularly challenging. To develop new control strategies, we explored bacteria associated with sclerotia of Sclerotinia sclerotiorum and Rhizoctonia solani, two soilborne fungi causing high yield losses. We combined different methodological approaches to get insights into the indigenous microbiota of sclerotia, to compare it to bacterial communities of the surrounding environment, and to identify novel biocontrol age

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6

Marčetić, Mirjana, Dragana Božić, Marina Milenković, Branislava Lakušić, and Nada Kovačević. "Chemical Composition and Antimicrobial Activity of Essential Oil of Different Parts of Seseli rigidum." Natural Product Communications 7, no. 8 (2012): 1934578X1200700. http://dx.doi.org/10.1177/1934578x1200700832.

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The chemical composition and antimicrobial activity of the essential oil of the Balkan endemic species Seseli rigidum Waldst. & Kit. (Apiaceae) was investigated. The monoterpene α-pinene was predominant in the volatile oil from aerial parts (57.4%) and fruit (23.3%). In the essential oil of the aerial parts limonene (6.7%), camphene (5.8%) and sabinene (5.5%) were also present in high amounts, and in the fruit oil, β-phellandrene (17.4%) and sabinene (12.9%). On the contrary, the root essential oil was composed almost entirely of the polyacetylene falcarinol (88.8%). The antimicrobial acti

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Lin, Lujie, Zhuqian Tang, Huijuan Xie, Lixin Yang, Bin Yang, and Hua Li. "Characterization of Differences in Chemical Profiles and Antioxidant Activities of Schisandra chinensis and Schisandra sphenanthera Based on Multi-Technique Data Fusion." Molecules 29, no. 20 (2024): 4865. http://dx.doi.org/10.3390/molecules29204865.

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Schisandra chinensis (Turcz.) Baill. (S. chinensis) and Schisandra sphenanthera Rehd. et Wils (S. sphenanthera) are called “Wuweizi” in traditional Chinese medicine, and they have distinct clinical applications. To systematically compare the differential characteristics of S. chinensis and S. sphenanthera, this study employed ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) and gas chromatography–mass spectrometry (GC-MS) to construct chemical profiles of these two species from different regions. In total, 31 non-volatiles and 37 volatiles were

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8

Lyons, Sarah M., Sydney C. Morgan, Stephanie McCann, et al. "Unique volatile chemical profiles produced by indigenous and commercial strains of Saccharomyces uvarum and Saccharomyces cerevisiae during laboratory-scale Chardonnay fermentations." OENO One 55, no. 3 (2021): 101–22. http://dx.doi.org/10.20870/oeno-one.2021.55.3.4551.

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Each wine growing region hosts unique communities of indigenous yeast species, which may enter fermentation and contribute to the final flavour profile of wines. One of these species, Saccharomyces uvarum, is typically described as a cryotolerant yeast that produces relatively high levels of glycerol and rose-scented volatile compounds as compared with Saccharomyces cerevisiae, the main yeast in winemaking. Comparisons of fermentative and chemical properties between S. uvarum and S. cerevisiae at the species level are relatively common; however, a paucity of information has been collected on t

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9

Mülner, Pascal, Alessandro Bergna, Philipp Wagner, et al. "Microbiota Associated with Sclerotia of Soilborne Fungal Pathogens – A Novel Source of Biocontrol Agents Producing Bioactive Volatiles." Phytobiomes Journal, no. 3 (June 11, 2019): 125–36. https://doi.org/10.1094/PBIOMES-11-18-0051-R.

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Soilborne plant pathogens are an increasing problem in modern agriculture, and their ability to survive long periods in soil as persistent sclerotia makes control and treatment particularly challenging. To develop new control strategies, we explored bacteria associated with sclerotia of <em>Sclerotinia sclerotiorum</em> and <em>Rhizoctonia solani</em>, two soilborne fungi causing high yield losses. We combined different methodological approaches to get insights into the indigenous microbiota of sclerotia, to compare it to bacterial communities of the surrounding environment, and

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10

Imade, Rose O., and Buniyamin A. Ayinde. "GC-MS analysis and invitro cytotoxic activity of Ocimum basilicum (Lamiaceae) volatile oil and active fraction composed majorly of estragole." Journal of Pharmacy & Bioresources 19, no. 3 (2022): 143–52. http://dx.doi.org/10.4314/jpb.v19i3.3.

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Ocimum basilicum leaves contain some bioactive compounds and this study was designed to evaluate the cytotoxic efficacy of its volatile oil and fractions. Preliminary screening of the oil obtained by hydrodistillation was carried out using bench-top assay methods employing tadpoles of Raniceps ranninus (10-40 μg/mL), nauplii of Artemia salina (10-1000 μg/mL) and radicles of Sorghum bicolor seeds (1-30 mg/mL). Application of column chromatography and preparative TLC on the oil resulted in fractions that were tested alongside the oil on breast (AU 565) and cervical (HeLa) cancer cell lines at 50

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11

Silva, Adriana Lins, Rita De Cássia Costa Araújo, Marcos Rodrigues, Áurea Izabel Aguiar Fonseca e. Souza, and Wilton Pires da Cruz. "Composting and vermicomposting residues of açaí and babassu for sustainable agriculture in Amazon." Cultura Agronômica: Revista de Ciências Agronômicas 29, no. 2 (2020): 217–31. http://dx.doi.org/10.32929/2446-8355.2020v29n2p217-231.

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Agroindustrial wastes in southeastern Amazon are abundant and there are policies encouraging proper disposal for such wastes for sustainable agriculture. In this study we compared the chemical parameters of composts resulting from composting and vermicomposting sheep manure added to agroindustrial wastes as a bulking agent. Piles of compost were created using sheep manure, fruit waste, and a bulking agent. The treatments consisted of compost piles of: Tc - sheep manure and fruit pulp; Ta - sheep manure, fruit pulp and triturated açaí seeds; Ts - sheep manure, fruit pulp and sawdust, and Tb - s

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12

Lee, Hahn-Bit, Hee-Jae Yang, and Sea C. Min. "Absorption of d-Limonene in Orange Juice into a Laminated Food Package Studied with a Solid Phase Micro-extraction Method." Food Engineering Progress 14, no. 4 (2010): 354–58. http://dx.doi.org/10.13050/foodengprog.2010.14.4.354.

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The methods for determining the diffusion parameters for the diffusion of d-limonene, a major volatile compound of orange juice, through a multi-layered food packaging material and predicting its absorption into the packaging material have been investigated. The packaging material used was the 1.5-mm thick multi-layered packaging material composed of high impact polystyrene (HIPS), polyvinylidene chloride (PVDC), and low density polyethylene (LDPE). Orange juice was placed in a cell where volatiles were absorbed in the sample package and kept at 23±2°C for 72 hr. The d-limonene absorbed in a 1

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13

BONNARME, PASCAL, CARMEN LAPADATESCU, MIREILLE YVON, and HENRY-ERIC SPINNLER. "L-methionine degradation potentialities of cheese-ripening microorganisms." Journal of Dairy Research 68, no. 4 (2001): 663–74. http://dx.doi.org/10.1017/s002202990100509x.

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Volatile sulphur compounds are major flavouring compounds in many traditional fermented foods including cheeses. These compounds are products of the catabolism of L-methionine by cheese-ripening microorganisms. The diversity of L-methionine degradation by such microorganisms, however, remains to be characterized. The objective of this work was to compare the capacities to produce volatile sulphur compounds by five yeasts, Geotrichum candidum, Yarrowia lipolytica, Kluyveromyces lactis, Debaryomyces hansenii, Saccharomyces cerevisiae and five bacteria, Brevibacterium linens, Corynebacterium glut

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14

Bonn, B., S. Sun, W. Haunold, et al. "COMPASS – COMparative Particle formation in the Atmosphere using portable Simulation chamber Study techniques." Atmospheric Measurement Techniques 6, no. 12 (2013): 3407–23. http://dx.doi.org/10.5194/amt-6-3407-2013.

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Abstract. In this study we report the set-up of a novel twin chamber technique that uses the comparative method and establishes an appropriate connection of atmospheric and laboratory methods to broaden the tools for investigations. It is designed to study the impact of certain parameters and gases on ambient processes, such as particle formation online, and can be applied in a large variety of conditions. The characterisation of both chambers proved that both chambers operate identically, with a residence time xT (COMPASS1) = 26.5 ± 0.3 min and xT (COMPASS2) = 26.6 ± 0.4 min, at a typical flo

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15

Bertone, Stefano, Erwan Mazarico, Michael K. Barker, et al. "Highly Resolved Topography and Illumination at Mercury’s South Pole from MESSENGER MDIS NAC." Planetary Science Journal 4, no. 2 (2023): 21. http://dx.doi.org/10.3847/psj/acaddb.

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Abstract Mercury’s south polar region is of particular interest since Arecibo radar measurements show many high-reflectance regions consistent with ice deposits. However, current elevation information in Mercury’s southern hemisphere is not sufficient to perform detailed modeling of the illumination and thermal conditions at these radar-bright locations and to constrain properties of the volatiles potentially residing there. In this work, we leverage previously existing elevation maps of Mercury’s surface from stereo-photogrammetry at 665 m pix−1, Mercury Dual Imaging System Narrow Angle Camer

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16

Alizadeh, Mahsa, David R. Weise, and Thomas H. Fletcher. "Characteristics of Pyrolysis Products of California Chaparral and Their Potential Effect on Wildland Fires." Fire 7, no. 8 (2024): 271. http://dx.doi.org/10.3390/fire7080271.

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The aim of this study was to investigate the pyrolysis of selected California foliage and estimate the energy content of the released volatiles to show the significance of the pyrolysis of foliage and its role during wildland fires. While the majority of the volatiles released during the pyrolysis of foliage later combust and promote fire propagation, studies on the energy released from combustion of these compounds are scarce. Samples of chamise (Adenostoma fasciculatum), Eastwood’s manzanita (Arctostaphylos glandulosa), scrub oak (Quercus berberidifolia), hoaryleaf ceanothus (Ceanothus crass

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17

Ozdikmenli, Seda, and Nukhet Nilüfer Zorba. "Uçucu Yağların Staphylococcus aureus Üzerine Etkisi." Turkish Journal of Agriculture - Food Science and Technology 2, no. 5 (2014): 228. http://dx.doi.org/10.24925/turjaf.v2i5.228-235.118.

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Diseases caused by Staphylococcus aureus are widespread through the world in spite of developing technology. S. aureus is an important pathogen causing food intoxications besides hospital infections by its antibiotic resistant strains. Nowadays, there has been worldwide increasing concern on usage of natural products to control microorganisms. One of these natural products is essential oils. They are produced from plants especially from spices and composed of many components and volatiles. This review summarizes informative literature on essential oils and their mode of antimicrobial action. I

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18

Afifi, Fatma U., Violet Kasabri, Hala I. Al-Jaber, Barakat E. Abu-Irmaileh, Mahmoud A. Al-Qudah, and Ismail F. Abaza. "Composition and Biological Activity of Volatile Oil from Salvia judaica and S. multicaulis from Jordan." Natural Product Communications 11, no. 4 (2016): 1934578X1601100. http://dx.doi.org/10.1177/1934578x1601100429.

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The aim of this work was to determine the composition of the hydro-distilled essential oil of Salvia judaica Boiss. and S. multicaulis Vahl. (Lamiaceae) from Jordan by GC and GC-MS and to report the actual composition of their fresh leaves and flowers using SPME (Solid Phase Micro-Extraction). Their dual alpha-amylase/alpha glucosidase and pancreatic lipase inhibitory activities as well as their anti-proliferative potential were screened. The aroma profile of the leaves, flowers, and flowers at pre-flowering stages of S. judaica, obtained through SPME was composed of sesquiterpene hydrocarbons

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19

Zagorskis, Alvydas, and Rasa Vaiškūnaitė. "An Investigation on the Efficiency of Air Purification Using a Biofilter with Activated Bed of Different Origin." Chemical and Process Engineering 35, no. 4 (2014): 435–45. http://dx.doi.org/10.2478/cpe-2014-0033.

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Abstract Recent studies in the area of biological air treatment in filters have addressed fundamental key issues, such as a biofilter bed of different origin composed of natural zeolite granules, foam cubes and wood chips. When foam and zeolite are mixed with wood chips to remove volatile organic compounds from the air, not only biological but also adsorption air purification methods are accomplished. The use of complex purification technologies helps to improve the efficiency of a filter as well as the bed service life of the filter bed. Investigations revealed that microorganisms prevailing

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20

Zang, Cort L., and Megan D. Willis. "Deployment and evaluation of an NH₄⁺∕ H₃O⁺ reagent ion switching chemical ionization mass spectrometer for the detection of reduced and oxygenated gas-phase organic compounds." Atmospheric Measurement Techniques 18, no. 1 (2025): 17–35. https://doi.org/10.5194/amt-18-17-2025.

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Abstract. Reactive organic carbon (ROC) is diverse in its speciation, functionalization, and volatility, with varying implications for ozone production and secondary organic aerosol formation and growth. Chemical ionization mass spectrometry (CIMS) approaches can provide in situ ROC observations, and the CIMS reagent ion controls the detectable ROC species. To expand the range of detectable ROC, we describe a method for switching between the reagent ions NH4+ and H3O+ in a Vocus chemical ionization time-of-flight mass spectrometer (Vocus-CI-ToFMS). We describe optimization of ion–molecule reac

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Loroch, Dominik, Sebastian Hackler, Arno Rohrbach, Jasper Berndt, and Stephan Klemme. "Accretion and Core Formation of Earth-like Planets: Insights from Metal–Silicate Partitioning of Siderophile and Volatile Elements." Geosciences 14, no. 11 (2024): 281. http://dx.doi.org/10.3390/geosciences14110281.

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The origin of volatile elements, the timing of their accretion and their distribution during Earth’s differentiation are fundamental aspects of Earth’s early evolution. Here, we present the result of a newly developed accretion and core formation model, which features the results of high P–T metal–silicate partitioning experiments. The model includes well-studied reference elements (Fe, Ni, Ca, Al, Mg, Si) as well as trace elements (V, Ga, Ag, Au, S) covering a wide range from refractory to volatile behavior. The accretion model simulates the different steps of planet formation, such as the ef

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22

Sun, Zhong Liang, Feng Xia Liu, Xian Qun Luo, Yu Cang Zhang, and Jing Xu. "Volatile Constituents of the Ligarine Extract of Eupatoriurn odoraturn." Advanced Materials Research 726-731 (August 2013): 245–49. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.245.

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Eupatoriurn odoratumaerial parts were extracted with ligarine and the volatile constituents isolated were analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). Volatile constituents were isolated from the ground aerial parts ofE. odoratumby ligarine extraction and analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). As a result, a total of fifteen compounds represented all of the extract were identified, amongst nine of fifteen compounds were sesquiterpenes. Esters and sesquiterpenes were found to compose three major chemotype ac

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Mumpuni, A., H. S. S. Sharma, and Averil E. Brown. "Effect of Metabolites Produced by Trichoderma harzianum Biotypes and Agaricus bisporus on Their Respective Growth Radii in Culture." Applied and Environmental Microbiology 64, no. 12 (1998): 5053–56. http://dx.doi.org/10.1128/aem.64.12.5053-5056.1998.

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ABSTRACT Trichoderma harzianum biotypes Th1, Th2, and Th3 produced volatile metabolites in vitro which had similar fungistatic effects on the growth of Agaricus bisporus. Metabolites present in agar colonized by these strains also inhibited mycelial growth of A. bisporus, although the reduction in growth was less in the presence of metabolites produced by biotype Th2 than that in the presence of metabolites produced by Th1 or Th3.A. bisporus produced metabolites in liquid culture that inhibited the growth of Th1 and Th3 but stimulated the growth of Th2. A compound(s) responsible for the inhibi

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Štefániková, Jana, Július Árvay, Michal Miškeje, and Miroslava Kačániová. "Determination of volatile organic compounds in Slovak bryndza cheese by the electronic nose and the headspace solid-phase microextraction gas chromatography-mass spectrometry." Potravinarstvo Slovak Journal of Food Sciences 14 (September 28, 2020): 767–73. http://dx.doi.org/10.5219/1300.

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The aim of the present study was to describe volatile organic compounds of the traditional Slovak bryndza cheese determined by using an electronic nose (e-nose) and a gas chromatography mass spectrometry (GCMS) with head-space solid phase microextraction (HS-SPME). For the first time, e-nose based on the gas chromatography principle with a flame ionization detector was described to identify and quantify aroma active compounds of bryndza cheese from Slovakia. The e-nose detects aroma compounds of very small concentrations in real-time of a few minutes and identifies them by comparing Kovats´ re

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Mariyam, Sabah, Mohammad Alherbawi, Naim Rashid, Tareq Al-Ansari, and Gordon McKay. "Bio-Oil Production from Multi-Waste Biomass Co-Pyrolysis Using Analytical Py–GC/MS." Energies 15, no. 19 (2022): 7409. http://dx.doi.org/10.3390/en15197409.

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Background: Bioenergy attracts much attention due to the global demand for renewable and sustainable energy resources. Waste biomass feedstocks—date pits, coffee waste, and cow dung—require efficient and environmentally friendly waste-management technologies such as pyrolysis. Fast pyrolysis occurs at fast heating rates (10–100 °C/s), generates high bio-oil yields, and is the most widely used process for biofuel generation. The aim of the study is to compare the effect of pyrolysis between single, binary, and ternary feeds on thermal degradation behavior and bio-oil composition. Methods: Therm

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Zhao, Ting, Ming Qiang Zhou, Wei Li Liu, et al. "Determination of Elements in Carbon Fiber Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS)." Applied Mechanics and Materials 423-426 (September 2013): 767–70. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.767.

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Based on microwave digestion and dry digestion, the concentrations of Si, S, Ca, Cr, Fe, Ni, Cu, Al, Mo, Sb, Ti, V, Y and Zn in carbon fiber were determined using inductively coupled plasma mass spectrometry (ICP-MS). Compare with the concentrations in the solution got by microwave digestion, the concentrations in the solution got by dry digestion are higher. And microwave digestion is more suitable for treatment of carbon fiber containing volatile elements than dry digestion.

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Lindholm, Espen E., Erlend Aune, Camilla B. Norén, et al. "The Anesthesia in Abdominal Aortic Surgery (ABSENT) Study." Anesthesiology 119, no. 4 (2013): 802–12. http://dx.doi.org/10.1097/aln.0b013e31829bd883.

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Abstract Background: On the basis of data indicating that volatile anesthetics induce cardioprotection in cardiac surgery, current guidelines recommend volatile anesthetics for maintenance of general anesthesia during noncardiac surgery in hemodynamic stable patients at risk for perioperative myocardial ischemia. The aim of the current study was to compare increased troponin T (TnT) values in patients receiving sevoflurane-based anesthesia or total intravenous anesthesia in elective abdominal aortic surgery. Methods: A prospective, randomized, open, parallel-group trial comparing sevoflurane-b

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Amoah, Papa K., Zeinab Mohammed Hassan, Pengtao Lin, Engelbert Redel, Helmut Baumgart, and Yaw S. Obeng. "Broadband Dielectric Spectroscopic Detection of Ethanol: A Side-by-Side Comparison of ZnO and HKUST-1 MOFs as Sensing Media." Chemosensors 10, no. 7 (2022): 241. http://dx.doi.org/10.3390/chemosensors10070241.

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The most common gas sensors are based on chemically induced changes in electrical resistivity and necessarily involve making imperfect electrical contacts to the sensing materials, which introduce errors into the measurements. We leverage thermal- and chemical-induced changes in microwave propagation characteristics (i.e., S-parameters) to compare ZnO and surface-anchored metal–organic-framework (HKUST-1 MOF) thin films as sensing materials for detecting ethanol vapor, a typical volatile organic compound (VOC), at low temperatures. We show that the microwave propagation technique can detect et

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29

Korenika, Ana-Marija Jagatić, Ivana Tomaz, Darko Preiner, Marina Lavrić, Branimir Šimić, and Ana Jeromel. "Influence of L. thermotolerans and S. cerevisiae Commercial Yeast Sequential Inoculation on Aroma Composition of Red Wines (Cv Trnjak, Babic, Blatina and Frankovka)." Fermentation 7, no. 1 (2020): 4. http://dx.doi.org/10.3390/fermentation7010004.

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Even though Saccharomyces cerevisiae starter cultures are still largely used nowadays, the non-Saccharomyces contribution is re-evaluated, showing positive enological characteristics. Among them, Lachancea thermotolerans is one of the key yeast species that are desired for their contribution to wine sensory characteristics. The main goal of this work was to explore the impact of L. thermotolerans commercial yeast strain used in sequential inoculation with S. cerevisiae commercial yeast on the main enological parameters and volatile aroma profile of Trnjak, Babić, Blatina, and Frankovka red win

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Patelski, Andrea Maria, Ksawery Pragłowski, Katarzyna Pielech-Przybylska, Maria Balcerek, and Urszula Dziekońska-Kubczak. "Evaluation of Probiotic Saccharomyces boulardii Yeast as a Distillery Strain." Applied Sciences 15, no. 3 (2025): 1392. https://doi.org/10.3390/app15031392.

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The probiotic properties of the yeast Saccharomyces boulardii are fairly well recognised, and research into the use of this strain in fermentation processes has been ongoing for several years. In this article, we have described the research results to evaluate the distillery potential of S. boulardii yeast. Compared to Ethanol Red and Thermosacc Dry yeast, the probiotic strain formed slightly different amounts of volatile compounds and fermented the available sugars less vigorously. The final ethanol concentration formed by the probiotic yeast was close to that observed for the distillery stra

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Sanchez-Ledesma, Lina Marcela, Jenny Alexandra Rodríguez-Victoria, and Howard Ramírez-Malule. "Acidogenic Fermentation of Cassava Wastewater: Effect of the Substrate-to-Microorganism Ratio and Temperature on Volatile Fatty Acids Production." Water 16, no. 23 (2024): 3344. http://dx.doi.org/10.3390/w16233344.

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The production of volatile fatty acids (VFAs) through the acidogenic fermentation of wastewater is an emerging technology that requires further research to optimize operational variables for specific substrates. Cassava wastewater, which is a byproduct of the cassava sour starch extraction process, has been minimally studied regarding its potential for VFA production through acidogenic fermentation. Batch reactors were used to evaluate the effects of the substrate-to-microorganism (S/M) ratio and temperature on VFA production from cassava wastewater. The results showed no statistically signifi

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Aćimović, Milica, Ružica Igić, Dragana Vukov, Marina Todosijević, Ivan Šalamon, and Katarina Radovanović. "Volatile Compounds from Salvia verticillata L. – Case Study from Serbia (Kopaonik Mountain) and Comparison to Literature Data." Journal of Agronomy, Technology and Engineering Management (JATEM) 7, no. 6 (2024): 1193–201. https://doi.org/10.55817/yiyg8036.

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The genus Salvia is the largest genus within the plant family Lamiaceae. However, in Serbia, only 14 species grow in nature, and S. verticillata L., or lilac sage, is one of them. Although this plant is rich in biologically active compounds, it is relatively rarely used. In Serbian traditional medicine, herbal tea prepared from the aerial parts of S. verticillata is used as an expectorant, to disinfect the oral cavity, or as a cataplasm for wound healing. The root is used to relieve gastrointestinal complaints, lower blood sugar, and treat various types of cancer. The aim of this research was

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Gillings, M. R., M. P. Holley, and M. Selleck. "Molecular identification of species comprising an unusual biofilm from a groundwater treatment plant." Biofilms 3, no. 1 (2006): 19–24. http://dx.doi.org/10.1017/s1479050507002098.

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ABSTRACTOrica's groundwater treatment plant in Botany, NSW, Australia, was designed to remove and destroy volatile organic compounds from polluted groundwater and to treat the water for reuse on the Botany Industrial Park. The initial steps in this process involved acidification of the groundwater and air stripping. During this operation, very large quantities of a biofilm formed within the air stripper, necessitating weekly clean-outs. We investigated the composition of this biofilm using molecular methods. Total DNA extracted from biofilm material was used as a template for amplification of

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Nikolova, Irina, A. Rob MacKenzie, Xiaoming Cai, Mohammed S. Alam, and Roy M. Harrison. "Modelling component evaporation and composition change of traffic-induced ultrafine particles during travel from street canyon to urban background." Faraday Discussions 189 (2016): 529–46. http://dx.doi.org/10.1039/c5fd00164a.

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We developed a model (CiTTy-Street-UFP) of traffic-related particle behaviour in a street canyon and in the nearby downwind urban background that accounts for aerosol dynamics and the variable vapour pressure of component organics. The model simulates the evolution and fate of traffic generated multicomponent ultrafine particles (UFP) composed of a non-volatile core and 17 Semi-Volatile Organic Compounds (SVOC, modelled asn-alkane proxies). A two-stage modelling approach is adopted: (1) a steady state simulation inside the street canyon is achieved, in which there exists a balance between traf

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Pastink, Margreet I., Bas Teusink, Pascal Hols, Sanne Visser, Willem M. de Vos, and Jeroen Hugenholtz. "Genome-Scale Model of Streptococcus thermophilus LMG18311 for Metabolic Comparison of Lactic Acid Bacteria." Applied and Environmental Microbiology 75, no. 11 (2009): 3627–33. http://dx.doi.org/10.1128/aem.00138-09.

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ABSTRACT In this report, we describe the amino acid metabolism and amino acid dependency of the dairy bacterium Streptococcus thermophilus LMG18311 and compare them with those of two other characterized lactic acid bacteria, Lactococcus lactis and Lactobacillus plantarum. Through the construction of a genome-scale metabolic model of S. thermophilus, the metabolic differences between the three bacteria were visualized by direct projection on a metabolic map. The comparative analysis revealed the minimal amino acid auxotrophy (only histidine and methionine or cysteine) of S. thermophilus LMG1831

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Lappia, Hanna E., and Raimo J. Alén. "Pyrolysis of crude tall oil-derived products." BioResources 6, no. 4 (2011): 5121–38. http://dx.doi.org/10.15376/biores.6.4.5121-5138.

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Crude tall oil (CTO) soap, purified and neutralised CTO, and neutralised distilled tall oil (DTO) were pyrolysed (at 750ºC for 20 s) by pyrolysis gas chromatography with mass-selective and flame ionisation detection (Py-GC/MSD and FID) to clarify their thermochemical behaviour. In each case, the pyrolysates were characteristically dependent on the feedstock, and a wide range of volatile aliphatic and aromatic compounds with some chemically bound oxygen formed. The CTO soap pyrolysate was typically composed of initial extractives-type compounds together with a significant amount of unsaturated

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Devi Andriani, Luta, Siregar Maimunah, and Wahyuni Sri Br. PA. "Growth response of shallot (Allium ascalonicum L.) varieties on municipal waste compost application." Jurnal Pertanian Tropik 7, no. 1 (2020): 121–25. http://dx.doi.org/10.32734/jpt.v7i1.3709.

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Growth of shallot plants could be increased through good plant cultivation such as using organic materials that can improve physical, chemical and biological properties in the soil and contain macro and micronutrients so that organic matter is needed in the form of municipal waste compost. The research objective was to study the responsiveness of the growth of onion varieties due to the application of municipal waste compost. This research was carried out in the Bandar Senembah village Binjai district Barat in February-March 2019. The study used a randomized block design (RAK) with 2 factors a

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Zampetti, Emiliano, Paolo Papa, Joshua Avossa, et al. "Low-Cost Benzene Toluene Xylene Measurement Gas System Based on the Mini Chromatographic Cartridge." Sensors 21, no. 1 (2020): 125. http://dx.doi.org/10.3390/s21010125.

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Benzene, toluene and xylene (BTX) are an important part of the volatile organic compounds (VOCs) to be detected and monitored in the air, due to their toxicity towards human health. One of the most reliable technique used in BTX detection is gas chromatography (GC), which presents a high sensitivity. On the other hand, it has important drawbacks, such as high costs, the need for qualified personnel and frequent maintenance. To overcome these drawbacks, this work reports the development of a low cost and portable BTX gas detection system based on a mini chromatographic cartridge, a photo ioniza

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Yi, Yujun, Caihong Tang, Zhifeng Yang, Shanghong Zhang, and Cheng Zhang. "A One-Dimensional Hydrodynamic and Water Quality Model for a Water Transfer Project with Multihydraulic Structures." Mathematical Problems in Engineering 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/2656191.

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The long Middle Route of the South to North Water Transfer Project is composed of complex hydraulic structures (aqueduct, tunnel, control gate, diversion, culvert, and diverted siphon), which generate complex flow patterns. It is vital to simulate the flow patterns through hydraulic structures, but it is a challenging work to protect water quality and maintain continuous water transfer. A one-dimensional hydrodynamic and water quality model was built to understand the flow and pollutant movement in this project. Preissmann four-point partial-node implicit scheme was used to solve the governing

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Declerck, Christ, Zak Hillel, Henry Shih, Maxine Kuroda, Cliff P. Connery, and Daniel M. Thys. "A Comparison of Left Ventricular Performance Indices Measured by Transesophageal Echocardiography with Automated Border Detection." Anesthesiology 89, no. 2 (1998): 341–49. http://dx.doi.org/10.1097/00000542-199808000-00009.

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Background Automated border detection (ABD) allows semiautomated measurement of left ventricular (LV) areas. They can be combined with left ventricular pressure signals to generate pressure-area loops and pressure-dimension indices of contractility. This study compared conventional indices of ventricular performance (fractional area change [FAC] and circumferential fiber shortening [Vcfc]) with pressure-dimension indices of contractility. A secondary aim was to compare the effects of volatile anesthetics on the indices. Methods Using transesophageal echocardiography with automated border detec

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Gottwald, Timothy, Gavin Poole, Earl Taylor, et al. "Canine Olfactory Detection of a Non-Systemic Phytobacterial Citrus Pathogen of International Quarantine Significance." Entropy 22, no. 11 (2020): 1269. http://dx.doi.org/10.3390/e22111269.

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For millennia humans have benefitted from application of the acute canine sense of smell to hunt, track and find targets of importance. In this report, canines were evaluated for their ability to detect the severe exotic phytobacterial arboreal pathogen Xanthomonas citri pv. citri (Xcc), which is the causal agent of Asiatic citrus canker (Acc). Since Xcc causes only local lesions, infections are non-systemic, limiting the use of serological and molecular diagnostic tools for field-level detection. This necessitates reliance on human visual surveys for Acc symptoms, which is highly inefficient

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He, Zhishu, Hao Zhang, Tao Wang, Ren Wang, and Xiaohu Luo. "Effects of Five Different Lactic Acid Bacteria on Bioactive Components and Volatile Compounds of Oat." Foods 11, no. 20 (2022): 3230. http://dx.doi.org/10.3390/foods11203230.

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In this research, oats were fermented with Lactobacillus plantarum, Lactobacillus acidophilus, Lactobacillus casei, Lactobacillus bulgaricus and Streptococcus thermophilus for 48 h at 37 °C. The purpose of this work was to compare the growth capacities of the five lactic acid bacteria (LAB) in the oat matrix and the effects of fermentation on the contents of the bioactive components of oat, such as β-glucan, polyphenols, flavonoids and volatile compounds at different time (0, 4, 8, 12, 24, 36 and 48 h). After 48 h of fermentation, the number of living L. acidophilus in oat reached 7.05 × 109 c

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Paśko, Paweł, Agnieszka Galanty, Tomasz Dymerski, et al. "Physicochemical and Volatile Compounds Analysis of Fruit Wines Fermented with Saccharomyces cerevisiae: FTIR and Microscopy Study with Focus on Anti-Inflammatory Potential." International Journal of Molecular Sciences 25, no. 11 (2024): 5627. http://dx.doi.org/10.3390/ijms25115627.

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The growing trend in fruit wine production reflects consumers’ interest in novel, diverse drinking experiences and the increasing demand for healthier beverage options. Fruit wines made from kiwi, pomegranates, and persimmons fermented using S. bayanus Lalvin strain EC1118 demonstrate the versatility of winemaking techniques. Kiwifruit, persimmon, and pomegranate wines were analyzed using HPLC and GC-TOFMS analyses to determine their concentrations of phenolic acids and volatile compounds. These results were supported by Fourier transform infrared (FTIR) spectroscopy to characterize and compar

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Sheraz, Muhammad, Silvia Dedu, and Vasile Preda. "Volatility Dynamics of Non-Linear Volatile Time Series and Analysis of Information Flow: Evidence from Cryptocurrency Data." Entropy 24, no. 10 (2022): 1410. http://dx.doi.org/10.3390/e24101410.

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This paper aims to empirically examine long memory and bi-directional information flow between estimated volatilities of highly volatile time series datasets of five cryptocurrencies. We propose the employment of Garman and Klass (GK), Parkinson’s, Rogers and Satchell (RS), and Garman and Klass-Yang and Zhang (GK-YZ), and Open-High-Low-Close (OHLC) volatility estimators to estimate cryptocurrencies’ volatilities. The study applies methods such as mutual information, transfer entropy (TE), effective transfer entropy (ETE), and Rényi transfer entropy (RTE) to quantify the information flow betwee

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AGOGNON, Prisca, Sêdami ADJAHOSSOU, A. N. Magloire GBAGUIDI, and Dominique KPADONOU. "Valorisation des sous-produits issus de la transformation de l'Ananas comosus L. Merril : Etat de l'art." African Scientific Journal Vol 3, N° 20 (2023): 256. https://doi.org/10.5281/zenodo.8409769.

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<strong>Résumé </strong> L'industrie de transformation de l'ananas produit d'énormes quantités de déchets, contribuant ainsi à aggraver le problème environnemental. Dans l’optique de préserver l’environnement de ces déchets, ils sont valorisés en des produits finis de valeur. L'objectif de cette revue est de faire l’état de l'art actuel sur la composition physico-chimique et l'utilisation des déchets d'ananas en général et en particulier pour la produc

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Kuchmenko, Tatyana A., Yanis R. Arustamov, Ruslan U. Umarkhanov, and Inna V. Novikova. "Application of sensor technologies for functional control of Kveik yeast in beer production." Аналитика и контроль 29, no. 1 (2025): 54–67. https://doi.org/10.15826/analitika.2025.29.1.003.

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The results of analysis of the equilibrium gas phase over beer samples prepared using different yeast types at various temperatures are considered. The priority objective of the study is investigating the volatile profile of beverages using new Kveik yeast strains. The importance of selecting the operating conditions for the new strains is associated with their high stress resistance to fermentation temperatures and ethanol levels, which is promising for the production of new beverages. The second objective was optimizing a set of analysis methods to speed up the brewing engineering process. T

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Diep, Tung Thanh, Michelle Ji Yeon Yoo, Chris Pook, Saeedeh Sadooghy-Saraby, Abhishek Gite, and Elaine Rush. "Volatile Components and Preliminary Antibacterial Activity of Tamarillo (Solanum betaceum Cav.)." Foods 10, no. 9 (2021): 2212. http://dx.doi.org/10.3390/foods10092212.

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Tamarillo is a nutrient-dense fruit with a unique aroma from its volatile compounds (VCs). In this study, we aimed to compare the volatile profiles: (i) of fresh and freeze-dried tamarillo; (ii) detected using Thermal Desorption–Gas Chromatography–Mass Spectrometry (TD–GC–MS) and Solid-Phase MicroExtraction–Gas Chromatography-Mass Spectrometry (SPME–GC–MS); (iii) of freeze-dried pulp and peel of New Zealand grown tamarillo. The possible antibacterial activity of freeze-dried tamarillo extracts was also investigated. We show that freeze-drying maintained most of the VCs, with some being more co

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Lembcke, G., and F. Zemlin. "Projected Structure of the Surface Protein of Sulfolobus Spec. B12 Determined to a Resolution of 1.0 NM by Cryo-Electronmicroscopy." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 1 (1990): 102–3. http://dx.doi.org/10.1017/s0424820100179269.

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The thermoacidophilic archaebacterium Sulfolobus spec. B12 , which is closely related to Sulfolobus solfataricus , possesses a regularly arrayed surface protein (S-layer), which is linked to the plasma membrane via spacer elements spanning a distinct interspace of approximately 18 nm. The S-layer has p3-Symmetry and a lattice constant of 21 nm; three-dimensional reconstructions of negatively stained fragments yield a layer thickness of approximately 6-7 nm.For analysing the molecular architecture of Sulfolobus surface protein in greater detail we use aurothioglucose(ATG)-embedding for specimen

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Moreno-Olivares, Juan, Maria Giménez-Bañón, Diego Paladines-Quezada, et al. "Aromatic Characterization of New White Wine Varieties Made from Monastrell Grapes Grown in South-Eastern Spain." Molecules 25, no. 17 (2020): 3917. http://dx.doi.org/10.3390/molecules25173917.

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The aromatic profile of a wine is one of the main characteristics appreciated by consumers. Due to climate change, vineyards need to adapt to new conditions, and one of the strategies that might be followed is to develop new white varieties from Monastrell and other cultivars by means of intervarietal crosses, since white varieties are a minority in south-eastern Spain. Such crosses have already been obtained and have been seen to provide quality white wines of high acidity and with a good aromatic composition. To confirm this, a quantitative analysis was carried out during two vintages (2018

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Mousis, O., A. Aguichine, R. Helled, P. G. J. Irwin, and J. I. Lunine. "The role of ice lines in the formation of Uranus and Neptune." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2187 (2020): 20200107. http://dx.doi.org/10.1098/rsta.2020.0107.

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We aim at investigating whether the chemical composition of the outer region of the protosolar nebula can be consistent with current estimates of the elemental abundances in the ice giants. To do so, we use a self-consistent evolutionary disc and transport model to investigate the time and radial distributions of H 2 O, CO, CO 2 , CH 3 OH, CH 4 , N 2 and H 2 S, i.e. the main O-, C-, N and S-bearing volatiles in the outer disc. We show that it is impossible to accrete a mixture composed of gas and solids from the disc with a C/H ratio presenting enrichments comparable to the measurements (appro

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