Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Volatile Profile"”.
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Effects of time and temperature during melanging on the volatile profile of dark chocolate
… Extraction (SPME) coupled with GC-MS, which volatile flavor-active compounds are formed or lost during the melanging process and how the time and temperature affect the volatile composition of the chocolate mass. Univariate statistical analysis on the 36 samples (3 temperatures, 4 time …
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Sensorial, cultural and volatile properties of dairy powders, yoghurt and butter from pasture and non-pasture cow diets
… occurred in the ability to extract and identify volatile aromatic dairy compounds that may influence sensory perception. In this Thesis volatile extraction techniques were optimised and evaluated in order to obtain a more representative volatile profile of selected dairy products, such as; whole …
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C6 and C9 volatile compounds in 223 cucumbers (cucumis sativus L.) In Genome-Wide Association Studies (GWAS)
Volatile profile analysis has been conducted on limited cucumber varieties. This research aimed to quantify C6 and C9 compounds in 223 GWAS cucumber varieties. A comprehensive analysis of volatiles was performed using solid-phase microextraction gas chromatography-mass spectrometry (SPME-GC-MS). …
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Functionality of Azadirachta indica A. Juss (neem) in beverages
… was crucial. In the second study, we examine the volatile profile of various neem leaf samples- powdered, dried and fresh, through solid phase microextraction (SPME) and essential oil extraction and analyze the constituents using gas chromatography-mass spectrometry. Fresh leaves contain …
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Developing novel tools to explore the marine volatilome
Key volatile organic compounds (VOCs) such as dimethyl sulfide (DMS) and isoprene have been extensively studied for their importance as semiochemicals and in climate regulation. In contrast, disentangling the myriad of signature VOCs in gas chromatographicdata has received much less attention. This …
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Applications of Proton Transfer Reaction and Selected Ion Flow Tube Mass Spectrometry in Health Monitoring
This thesis investigates the use of Volatile Organic Compounds (VOCs) in disease diagnosis and monitoring. VOCs may be found in the human body, in exhaled breath, faecal matter, urine, and skin. Analysis of the volatile profile produced in the human body can provide an indicator of metabolic …
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The Effects of Cofermentation of Cider and Apple Pomace on Cider Attributes
… content (TPC), alcohol by volume (ABV), color, volatile profile, and sensory properties. The ciders fermented with apple pomace went through malolactic fermentation. During the maceration phenolics were extracted which resulted in an increase in phenolic content in cider. Compared to the …
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Using Flavor Chemistry, Sensory, and Texture to Determine Domestic Edamame Quality
… (GC-O) analyses to obtain (1) impactful volatile compounds present, (2) changes in these compounds by stink bug feeding injury, and (3) volatile contributions to sensory characteristics. Sensory methods were utilized to (1) evaluate differences in perception of edamame with and without …
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The role of olfaction in host-finding by two specialist predators of hemlock woolly adelgid
… by the predators following exposure to host volatile compounds. The final experiment involved identifying compounds emitted from eastern hemlock, and the affect of HWA-feeding on volatile emissions. Laricobius nigrinus Fender (Coleoptera: Derodontidae) antennae are densely populated with …
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Effect of high heat treatment and β-casein-reduction on the rennet coagulation and ripening of Cheddar and Emmental cheeses manufactured from micellar casein concentrate
… plasmin activity, primary proteolysis, texture profile, flowability and colour in the resultant Emmental cheese. Depletion of milk whey protein content in milk by either 53.60 % or 70.29 % largely increased milk heat stability as measured by rennet coagulation, plasmin activity and cheese …
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Sensory directed determination of odor important components of natural (raw) and roasted pecan oil
… popularized for their impressive nutritional profiles and bold flavors. Gourmet specialty oils largely consist of virgin, cold-pressed tree nut oils (often made from the roasted form of the nut) which retain their beneficial micro and macronutrient profiles and unique aromas as a result of the …