Essays about: "gc ms"

Showing result 21 - 25 of 99 essays containing the words gc ms.

  1. 21. Development of an analytical method for the screening of meaty flavors in commercial foodstuff by SPME-GC/O-MS

    University essay from Lunds universitet/Livsmedelsteknik och nutrition (master)

    Author : Ioannis Protopappas; [2021]
    Keywords : Gass Chromatography; Mass spectrometry; Meaty flavors; Aromas; Solid pahse microextraction; Mallaird; Lipid degradation; Food technology; Agriculture and Food Sciences;

    Abstract : The aim of the project was to develop a methodology for the chromatographic analysis able to identify the key odorants in meaty food products. The approach was based on the analysis of an already in market product and the theoretical background of the meaty flavors sensorially. READ MORE

  3. 22. Optimization of solid-phase extraction (SPE) as sample preparation for oil samples in forensic investigations.

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Aamanda Chang; [2021]
    Keywords : Solid-phase extraction SPE ; heavy fuel oil HFO ; fingerprint; polycyclic aromatic hydrocarbons PAHs ; biomarkers.;

    Abstract : Oil spills, especially in water have happened throughout the years. The consequences from this kind of incident have always been a threat to marine life and take a lot of money and time to clean up. READ MORE

  4. 23. Development of headspace solid phase microextraction gas chromatography mass spectrometry method for analysis of volatile organic compounds in board samples : Correlation study between chromatographic data and flavor properties

    University essay from Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Author : Thea Zethelius; [2021]
    Keywords : Solid phase microextraction SPME ; method development; volatile organic compounds VOCs ; food contact material FCM ; flavor experience; design of experiment DoE ; multivariate analysis;

    Abstract : The purpose of this thesis work was to develop a headspace solid phase microextraction gas chromatography mass spectrometry (HS-SPME-GC-MS) method to detect volatile organic compounds (VOCs) in board samples and to statistically investigate potential correlation between chromatographic data and flavor data obtained from a trained panel. The developed method would hopefully serve as a complement to the already established routine analyses at Stora Enso and gain an increased understanding of which VOCs in the board influence its flavor properties. READ MORE

  5. 24. Partial hydrodeoxygenation of a heavy bio-based oil fraction : (A technical feasibility study)

    University essay from KTH/Kemiteknik

    Author : Akshay Menon; [2020]
    Keywords : Hydrodeoxygenation; Tall oil pitch; oxygen removal; sulphidation; catalyst;

    Abstract : This report is intended to provide the reader with an extensive background information on hydrode oxygenation (HDO) of Tall Oil Pitch (TOP), combined with results from chemical property analyses of the same. Firstly, the importance of hydrogenation and oxygen removal for a biomass-based feed material is highlighted. READ MORE

  6. 25. Mechanism of Formation of Soft Particles in Biodiesel Fuel Blends

    University essay from KTH/Materialvetenskap

    Author : Roberta Maria Fiorenza; [2020]
    Keywords : ;

    Abstract : The large environmental impact related to the use of fossil fuel has driven the shift toward renewable sourced alternatives. Fossil diesel can be nowadays replaced by biodiesel, obtained from vegetable oils and fats, mostly used as biodiesel blends. READ MORE