Global ETD Search
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Showing 1 to 15 of 15 for “"volatile analysis"”.
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Development and Validation of a Dynamic Vapor Sorption -Fast Gas Chromatography Method for Studying the Effects of Humidification and Temperature on Volatile Release From Amorphous Carbohydrate Glasses
… this study was to develop and validate a rapid volatile analysis method which coupled Dynamic Vapor Sorption technology with fast gas chromatography-flame ionization detection for studying the effects of humidification and temperature on volatile release from amorphous glasses. Uncertainty …
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Analysis of volatile compounds, proximate composition, and fatty acids in Pacific bluefin tuna (Thunnus orientalis)
… dorsal chu-toro, and wakaremi conducting volatile analysis, proximate analysis, and fatty acid analysis. The results from these analyses can then be used as a base standard for companies seeking to create alternatives versions of PBT. Samples analyzed in this study were cultured PBT …
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An in-depth analysis of beer flavor and its impact on consumer refreshing perception
… consumption using a survey, consumer study, and volatile analysis. A preliminary beer survey (n = 1,050) indicated that consumers believed beer was highly refreshing (≥8 out of 10). Flavor and temperature were major impactful factors for refreshment, along with a “clean and crisp” flavor profile. …
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An in-depth analysis of beer flavor and its impact on consumer refreshing perception
… consumption using a survey, consumer study, and volatile analysis. A preliminary beer survey (n = 1,050) indicated that consumers believed beer was highly refreshing (≥8 out of 10). Flavor and temperature were major impactful factors for refreshment, along with a “clean and crisp” flavor profile. …
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Frying Stability of Low-Linolenic Acid Soybean Oil and Examination of the P-Anisidine Value Method
… between p-anisidine value and headspace volatiles, sensory evaluation, and polymers. Partially hydrogenated soybean frying oil was used to fry shoestring potatoes. The oil was evaluated by p-anisidine value, headspace volatile analysis, sensory evaluation, and polymer analysis. …
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Effects of Capture and Return on Chardonnay (Vitis vinifera L.) Fermentation Volatiles
… system for the partial retention of fermentation volatiles, as a means of improving white wine quality, was evaluated. Twenty-three aroma-active volatiles including ethyl esters, acetate esters, fusel alcohols, and fatty acids, were quantified using head-space solid phase microextraction with …
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Development of standardized dry roasting procedures for Virginia type peanuts
… were roasted on each roaster and tested for volatile analysis using SPME GC/MS with high variation observed within samples which may be caused by uneven roasting. The volatile results showed similar trends for seventeen compounds between normal and high oleic samples. The Behmor roaster was …
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Oxidation barrier and light protective packaging properties for controlling light induced oxidation in milk
… oxidation products, riboflavin degradation, and volatile analysis by electronic nose. Changes in dissolved oxygen content were associated closely with oxidation changes in milk over 72h. PET with 6.6% TiO2 was the most successful package, based on triangle test methodology, protecting milk …
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Oxidative stability of Menhaden/Soybean oil blends
… of this study was to follow the formation of volatile compounds in menhaden/soybean oil blends and to correlate total volatiles with sensory odor scores. Specially Processed Menhaden Oil (SPMO) was supplied by Zapata Haynie Corporation (Reedville, VA). Blends of 0%, 10%, 20%, and 100% menhaden …
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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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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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Understanding consumer liking of beef with particular reference to flavour
… groups were observed using hierarchical cluster analysis and these cluster groups were described as “fastidious”, “tender beef liker”, “bull beef liker” and “easily pleased” consumers. These cluster groups exhibited different scoring patterns and/or preference for beef. Research was commissioned …
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A Study of Petrography, Fluid Inclusions and Graphite Alteration of the Phoenix Uranium Deposit, Athabasca Basin, Northern Saskatchewan, Canada
… from 90 to 130 °C. Bulk fluid inclusion volatile analysis by mass spectrometry indicates H2O as the dominant species, with less than 1 mole% non-aqueous volatiles. The Raman spectroscopic study of the metamorphic graphite in metapelites (Gr1) suggests gradual structural disordering …
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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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Lipoxygenase activity in menhaden (Brevoortia tyrannus) and its contribution to oxidation of omega-3 polyunsaturated fatty acids in menhaden oil
… between the TBA values of the esters. Of the 60 volatile compounds identified by GC-MS in the undeodorized menhaden oil, 19 were aldehydes, 9 were alcohols and 8 were ketones. Volatiles that are potentially Ii poxygenase derived, namely 2-octenal, 1-octen-3-01, 2-nonenal, 2,6-nonadienal (E,Z), …