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Showing 1 to 20 of 27 for “"HS-SPME"”.

  1. The Effect of Wine Matrix Ingredients on 3-Alkyl-2-methoxypyrazines Measurements by Headspace Solid-Phase Microextraction (HS-SPME)

    Hartmann, Peter J.Virginia Tech2002

    … ingredients and conditions on the headspace (HS) sampling of 3-alkyl-2-methoxypyrazines was investigated with solid-phase microextraction (SPME) and capillary gas chromatography, using a nitrogen phosphorus detector. Changes in the recovery of 3-ethyl-, isopropyl-, sec-butyl-, and …

    vt Repository record

  2. Profiling and putative aroma biomarker identification for flavor in potatoes using a trained sensory panel and HS-SPME GC-MS

    Bough, Raven, author, Jayanty, Sastry, advisor, Holm, David G., advisor, Stone, Martha, committee memberColorado State University. Libraries2017

    … gas chromatography coupled to mass spectrometry (HS-SPME GC-MS) facilitated identification of 42 unique metabolites with significant variation across samples (ANOVA, α=0.05, n=5 technical replicates x 14-15 clones x 2 cooking methods). Based on Spearman's rank correlations, hierarchical clustering …

    colostate Repository record

  3. Estudo dos compostos voláteis de algumas espécies de eucalipto através do uso de microextração em fase sólida no modo headspace (HS-SPME)

    Zini, Claudia Alcaraz2002

    Neste trabalho utilizou-se a técnica de HS-SPME/GC/ITMS para o estudo qualitativo dos compostos voláteis (VOC) emitidos pelas folhas de três espécies de Eucalyptus (E.): E. citriodora, E. dunnii e E. saligna tanto em laboratório como in situ, além do estudo da relação entre folhas de eucalipto e …

    brazil-ufrgs Repository record

  4. Development of a headspace solid-phase microextraction (HS-SPME) procedure for the determination of short-chain fatty acids (SCFAs) in activated sludge by GC-FID

    Cheng, Shiyan

    <p>The process of wastewater treatment includes the removal of inorganic solids such as sand and gravel as well as organic materials, phosphorus, and nitrogen. Activated sludge, containing a variety of living organisms, is added into the wastewater treatment system. Short-chain fatty acids (SCFAs), …

    emich Repository record

  5. Senzoricky aktivní látky ječného sladu

    Havlíková, MichaelaVysoké učení technické v Brně. Fakulta chemická

    … senzoricky aktivních látek ječného sladu metodou HS-SPME-GC-MS. Byly analyzovány vzorky světlého sladu plzeňského typu, světlého karamelového sladu a barvicího čokoládového sladu, čtyř sladovnických odrůd ječmene – LG TOSCA, RGT PLANET, LG STAMGAST a BOJOS. Teoretická část práce je zaměřena na …

    brno-tech Repository record

  6. Use of Extraction Technologies in Food Safety Studies

    Qiu, Changling2017

    … extraction (ASE) and solid phase extraction (SPME), which are considered “green” sample preparation techniques, are among the most studied sample preparation techniques. They have advantages over traditional extraction methods, such as shortened extraction time, reduced solvent consumption, …

    sdstate Repository record

  7. The Development and Evaluation of Non-invasive Methods to Characterise the Disease States of Patients Utilising Selective Discrimination, Gas Chromatography-Mass Spectrometry and Chemometrics

    Turner, Diane CoralThe Open University2018

    … with headspace solid-phase microextraction (HS-SPME-GC-ToFMS). A robust and sensitive method was developed by optimisation of all sample analysis parameters and was applied to clinical samples from bladder and prostate cancer patients and those with hepatic disorders. This evidence was …

    the-open-u Repository record

  8. Decoding the Flavor of Kentucky's Native Pawpaw Fruit

    Roark, Mackenzie Leanne

    … both headspace solid phase micro-extraction (HS-SPME) for 30 minutes at 23°C and 50°C, and solvent extraction using methylene chloride. The sample extracts were analyzed with both gas chromatography – mass spectrometry (GC-MS) and gas chromatography – olfactometry (GC-O). To eliminate …

    eku Repository record

  9. Profile of Missouri Norton wine aroma using solid phase microextraction of headspace, gas chromatography-olfactometry, mass spectrometry

    Monson, SteveUniversity of Missouri--Columbia2011

    … using headspace solid-phase microextraction (HS-SPME) and identified by a trained panel. The samples were then diluted to determine the most important odor active compounds, resulting in thirty one compounds responsible for the nine most common descriptors of diluted Norton samples. Positive …

    missouri Repository record

  10. Extending the Limits of Solid Phase Microextraction

    Chopra, Shilpi2015

    <p>Solid phase microextraction (SPME) is a solventless extraction technique that combines sample preparation and sample introduction into a gas chromatograph into a single step. For the past 20 years, solid-phase micro-extraction (SPME) has been used in numerous fields such as: food analysis, …

    shu-thes Repository record

  11. Produção e extração de metabólitos secundários de duas plantas medicinais propagadas in vitro e produção de levoglucosana por pirólise rápida de bagaço de cana

    Ríos Ríos, Anyela MarcelaUniversidade Federal de Viçosa2019

    … em fase sólida através do headspace (HS-SPME) e as condições de extração foram otimizadas previamente. Fatores abióticos foram testados no desenvolvimento in vitro de plantas de P. crassinervium a partir de segmentos nodais (SN) cultivados sob condições controladas. O bagaço de cana …

    brazil-ufv Repository record

  12. Physicochemical and aroma characterization of Arbutus pavarii honey

    Hwisa, Nagiat TayebUniversity of Illinois at Urbana-Champaign2021

    … and by headspace-solid phase microextraction (HS-SPME). The volatile aroma components were identified by gas chromatography olfactometry (GC-O) and gas chromatography mass spectrometry (GC-MS) analytical methods and confirmed by authentic standards. The potent odorants of the honey were …

    uiuc Repository record

  13. Volatile Compounds in Vine Tea (Ampelopsis grossedentata)

    Vieira Carneiro, Renata CarolineVirginia Tech2016

    … by headspace solid-phase micro-extraction (HS-SPME) and gas chromatography-mass spectrometry (GC-MS). Commercial vine teas samples were brewed with distilled water and Blacksburg (VA, USA) tap water and analyzed in triplicate. Vine tea infusions had acidic pH values and dark, reddish-yellow …

    vt Repository record

  14. Systemische Verfügbarkeit und Pharmakokinetik von Thymol nach oraler Applikation einer thymianhaltigen Zubereitung im Menschen

    Kohlert, ClaudiaUniversität Würzburg

    … headspace Festphasenmikroextraktionsmethode (HS-SPME) entwickelt, die Extraktion, Anreicherung und Probenaufgabe in einem einzigen Schritt ermöglichte. Die Quantifizierung von Thymol im unteren ng.mL-1 Bereich wurde durch die Verwendung von Gaschromatographie in Kombination mit …

    wurz-thes Repository record

  15. Detection and analysis of spin trapped radical adducts using thermal desorption gas chromatography mass spectrometry (TD-GC-MS)

    Manzoor, K2018

    … i.e.Headspace Solid Phase Microextraction (HS-SPME) or Thermal desorption (TD), andthe extracted products then detected and identified by using gas chromatography-massspectrometry (GC-MS). GC-MS provides an alternative to other traditional techniqueslike EPR spectroscopy, as it provides more …

    salford Repository record

  16. Stabilisation of dehydrated nanoemulsions using sugar - protein matrices

    Maher, Patrick G.University College Cork2015

    … (indicators of lipid oxidation) after 24 months storage due to their lower free fat and porosity, measured using a validated GC HS-SPME method, This research has shown the effect of altering the continuous phase of nanoemulsions on microstructure of spray dried nanoemulsions, which affects …

    cork Repository record

  17. Optimalizace výroby nečokoládových cukrovinek s přídavkem extraktu tužebníku za použití různých sladidel

    Malyszová, MarkétaVysoké učení technické v Brně. Fakulta chemická

    … složek byla realizována pomocí metody HS SPME GC-MS, přičemž bylo ve vzorcích identifikováno 39 různých látek, převážně zastoupené ze skupiny alkoholů a aldehydů. Pro určení celkového obsahu fenolických látek byla použita Folin-Cicalteuova spektrofotometrická metoda a pro stanovení …

    brno-tech Repository record

  18. Impacts of Water, Extraction Procedure and Origin on Anthocyanins and Volatile Compositions of Hibiscus Extracts and Freeze-Dried Hibiscus

    Ndiaye, OumouleVirginia Tech2016

    … and gas chromatography-mass spectrometry (HS-SPME-GCMS). Origin and temperature as well as their interaction had significant effects on the anthocyanin contents, with respective p-values of 0.0036 and 0.0025 and 0.0002. Freeze-drying showed no effect on the anthocyanins in cold extracts. In …

    vt Repository record

  19. Examination of produced water from the Al-Hamada oilfield, Libya.

    Harati, Huda M.Sheffield Hallam University (United Kingdom).2012

    … carried out using techniques, such as, GC-FID (HS-SPME), GC-MS, (ESI-MS/MS) and (LC-ESI-MS). The results indicate that the metals were within the expected natural ranges compared to those mentioned in the literature. Only manganese values were found to be higher than those in the literature in a …

    sheffield-hallam Repository record

  20. Flavor and Quality Characteristics of Two Primocane-bearing Blackberry Cultivars as Impacted by Foliar and Shade Application

    Xu, TianyouVirginia Tech2023

    … chromatography-mass spectrometry-olfaction (HS-SPME-GC-MS-O). Shade cloth significantly reduced the white drupelet disorder (WDD) in Prime-Ark® Freedom but it also reduced the total soluble solid content (°Bx) and °Bx/% titratable acidity (a ratio indicates the sweet and sour balance for …

    vt Repository record

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