Search Results - "mass spectrometry"

In vitro plants of Vitis vinifera respond to infection with the fungus Phaeoacremonium parasiticum by synthesizing the phytoalexin nerolidol by Escoriaza, Maria Georgina, Garcia Lampasona, Sandra Claudia, Gomez Talquenca, Gonzalo, Piccoli, Patricia Noemí

“…The main terpene identified by gas chromatography electron impact mass spectrometry (GC-EIMS) was nerolidol, which was found in apical and basal tissues at a concentration of ca. 0.12 μg mg FW−1. …”
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The effects of Saccharomyces cerevisiae strains carrying alcoholic fermentation on the fermentative and varietal aroma profiles of young and aged Tempranillo wines by Denat, Marie, Perez, Maria Dolores, Heras, José María, Querol, Amparo, Ferreira, Vicente

“…Aroma compounds were studied by Gas Chromatography (GC), GC-Olfactometry and GC-Mass Spectrometry (MS), during fermentation by trapping volatilized aroma, immediately after fermentation and after accelerated aging. …”
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Identificación de adulteraciones en café tostado mediante cromatografía de gases acoplada a espectrometría de masas by Campoverde León, Joseph David, Santín, Kaila, Figueroa, Jorge G.

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Investigation of constitutive phloem phenolics in European ash (Fraxinus excelsior) with different phenotypic susceptibility to ash dieback by Holm, Hjalmar

“…Chemical analysis using Time-of-Flight Mass spectrometry reveals significant differences in levels of several phenolic compounds, foremost the coumarin fraxin and the secoiridoid ligustroside, which is more prevalent in trees resistant to H. fraxineus than in susceptible ones. …”

The influence of antimicrobial agents on the development of antibiotic resistance in the vaginal bacterial flora of artificially inseminated mares : a study on mares in a stud envi... by Wilén, Elin

“…Isolated bacteria were identified by Matrix-Assisted Laser Desorption / Ionization Time of Flight Mass Spectrometry (MALDI-TOF MS). Bacterial species that could be isolated from both D0 and D3 in the same mare were analysed regarding antimicrobial resistance. …”

Effect of Marginal Zinc Intake and Repletion on Essential Fatty Acid Metabolism by Suh, Jung, Burke, Sarah, Shigenaga, Mark, Killela, David, Holland, Tai, Shenvi, Swapna, Sutherland, Barbara, King, Janet C.

“…Plasma free fatty acids and sphingolipids were measured by mass spectrometry. FADS1 and FADS2 activities were calculated by g-linolenic (GLA)/linolenic acid (LA) or arachidonic acid (AA)/dihomo-g-linolenic acid (DGLA) ratios, respectively. …”
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Direct analysis of néctar and floral volatile organic compounds in hybrid onions by HS-SPME/GC-MS: Relationship with pollination and seed production by Soto Vargas, Verónica Carolina, Maldonado, Irma Beatriz, Jofre, Viviana Patricia, Galmarini, Claudio Romulo, Silva, Maria Fernanda

“…In this study, a simple and solvent-free method using headspace solid-phase microextraction (SPME) and gas chromatography–mass spectrometry (GC–MS) was developed for determination of the volatile compounds from fresh flowers and nectar of male sterile and fertile lines of Allium cepa L. …”
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Brewer’s yeast, Saccharomyces cerevisiae, enhances attraction of two invasive yellowjackets (Hymenoptera: Vespidae) to dried fruit and fruit powder by Babcock, Tamara, Gries, Regine, Borden, John, Palmero, Luis, Mattiacci, Analia, Masciocchi, Maite, Corley, Juan Carlos, Gries, Gerhard

“…We analyzed the headspace volatiles of dried fruit and fruit powder baits with and without Brewer’s yeast, Saccharomyces cerevisiae, using gas chromatography–mass spectrometry, and we field tested these baits for their attractiveness to yellowjackets in Argentina. …”
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Neuronal network analyses reveal novel associations between volatile organic compounds and sensory properties of tomato fruits by Cortina, Pablo Ramiro, Santiago, Ana N., Sance, María M., Peralta, Iris Edith, Carrari, Fernando, Asis, Ramón

“…Ninety-four VOCs were analyzed by headspace solid phase microextraction/gas chromatography–mass spectrometry (HS/SPME/GC–MS). The relationship between sensory data and VOCs was explored using an Artificial Neural Networks model (Kohonen Self Organizing Maps, omeSOM). …”
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In vitro antifungal activity of Peltophorum dubium (Spreg.) Taub. extracts against Aspergillus flavus. by Di Ciaccio, Lucía Soledad, Catalano, Alejandro V., López, Paula G., Rojas, Dante Emanuel, Cristos, Diego Sebastian, Fortunato, Renee Hersilia, Salvat, Adriana Elisabeth

“…Bio-guided fractionation, High Performance Liquid Chromatography diode array ultraviolet/visible (HPLC UV/VIS DAD), and Ultra-High Performance Liquid Chromatography Electrospray Ionization Mass Spectrometry (UPLC ESI-MS) analyses were conducted to characterize the extracts and their active fractions. …”
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Supramolecular solvent-based high-throughput sample treatment for monitoring phytohormones in plant tissues by Yonny, Melisa Evangelina, Ballesteros-Gómez, Ana, Toscano Adamo, Maria L., Rodriguez Torressi, Ariel, Nazareno, Mónica Azucena, Rubio, Soledad

“…Sample treatment consisted in a single extraction-cleanup step involving the use of a low volume of SUPRAS (244 μL), the stirring (5 min) and centrifugation (15 min) of the sample at room temperature, and the direct analysis of the extract by liquid chromatography tandem mass spectrometry (LC-MS/MS). This high-throughput sample treatment method delivered excellent results for the target phytohormones regarding absolute recoveries (80–92%), method quantification limits (0.05–2 ng g−1), reproducibility (1–7%) and matrix effects (+13 to −31%), in both melon and pepper leaves, compared to reported methods based on repetitive solvent extraction, purification and solvent evaporation steps. …”
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High‑energy emulsification of Allium sativum essential oil boosts insecticidal activity against Planococcus citri with no risk to honeybees by Modafferi, Antonino, Giunti, Urbaneja, Alberto, Laudani, Francesca, Latella, Pérez-Hedo, Mertixell, Ricupero, Michele, Palmeri, Vince, Campolo, Orlando

“…Garlic EO was chemically analyzed by gas chromatography-mass spectrometry (GC-MS) and formulations were physically characterized using Dynamic Light Scattering (DLS) apparatus. …”
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Effects of Fengycins and Iturins on Fusarium oxysporum f. sp. physali and Root Colonization by Bacillus velezensis Bs006 Protect Golden Berry Against Vascular Wilt by Ongena, Marc, Moreno Velandia, Carlos Andrés, Cotes Prada, Alba Marina

“…Ultraperformance liquid chromatography–electrospray ionization–mass spectrometry analysis revealed the capacity of Bs006 to synthesize homologous compounds of iturins, surfactins, and fengycins in liquid culture and on the inhibition zone against F. oxysporum f. sp. physali in dual confrontation tests. …”
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Induction of plant defence and secretion of volatile compounds by Colletotrichum acutatum in leaf infection assay of woodland strawberry by Haji Mirza Ali, Joubin

“…Gas Chromatography Mass Spectrometry (GC-MS) analysis was performed for detection of volatiles, resulting in higher abundancy of βcaryophyllene and other volatile sesquiterpenoids in infected leaf samples, in comparison with uninfected leaves (control). …”

Campylobacter jejuni and Campylobacter coli infection, determinants and antimicrobial resistance patterns among under-five children with diarrhea in Amhara National Regional State,... by Worku, M., Tessema, B., Ferede, G., Ochieng, Linnet, Leliso, S.A., Mutua, Florence, Moodley, Arshnee, Grace, Delia, Gelaw, B.

“…The suspected colonies were analyzed using matrix-assisted laser desorption ionization-time of flight mass spectrometry to confirm the species. Antimicrobial susceptibility testing was performed using a disc diffusion technique. …”
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Fast decolorization of azo dyes in alkaline solutions by a thermostable metal‑tolerant bacterial laccase and proposed degradation pathways by Navas, Laura Emilce, Carballo, Romina, Levin, Laura, Berretta, Marcelo Facundo

“…We analyzed the degradation products of laccase-treated Xylidine and Methyl Orange by capillary electrophoresis and mass spectrometry, and propose a degradation pathway for these dyes. …”
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Antifungal and toxicological evaluation of the alkaloids fraction from Neltuma nigra leaves by Sequin, Christian J., Appelhans, Stefania Carolina, Heis, Magalí S., Torrent, Walter A., Trossero, Julia A., Catalan, Cesar Atilio Nazareno, Sampietro, Diego Alejandro, Aceñolaza, Pablo Gilberto

“…Alkaloids fraction was extracted from leaves of N. nigra and its composition was analyzed by gas-chromatography coupled to mass spectrometry (GC-MS). The antifungal effect was recorded by measuring diameters of halos of inhibition of the growth of the different evaluated fungis. …”
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Host selection by Ibalia leucospoides based on temporal variations of volatiles from the hosts’ fungal symbiont by Jofre, Nelida Raquel, Pildain, María Belén, Cirigliano, A.M., Cabrera, G.M., Corley, Juan Carlos, Martinez Von Ellrich, Andres

“…We concurrently examined the fungal volatiles by headspace sampling through solid-phase microextraction (SPME) followed by gas chromatography mass spectrometry (GC-MS). We observed that females were attracted to volatiles produced by two-week-old fungal cultures, a period that matches when older larvae are still within ovipositor reach. …”
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Solar UV-B radiation modifies the proportion of volatile organic compounds in flowers of field-grown grapevine (Vitis vinifera L.) cv. Malbec by Gil, Mariana, Bottini, Ambrosio Rubén, Pontin, Mariela Ana, Berli, Federico Javier, Salomon, María Victoria, Piccoli, Patricia Noemí

“…Gas chromatography–electron impact mass spectrometry analysis of flowers resulted in the identification of 12 VOCs, including eight sesquiterpenes, two aldehydes, and two ketones, being the oxygenated sesquiterpene farnesol the most abundant. …”
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Intoxicación de equinos por Senecio pp en el noroeste argentino by Micheloud, Juan Francisco, Merep, P., Tomas, Rodrigo Hernán, Perotti, M., Schuff, C.

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