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 “"Trimethylamine (TMA)"”.
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Post-mortem changes in Nephrops norvegicus muscle : biochemical processes, microbial actions and effects on food quality
… parameters, such as rigor mortis, kvalue, trimethylamine (TMA), ammonia, oxidized lipids, the bacteria load and the pH are generally known to reflect quality. However, none of these parameters is established for N. norvegicus and research is needed to elucidate their importance in this …
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Studies on the preservation of crab processing waste and evaluation of the quality of the protein from crab waste
… other treatments, with lower (P < .05) NH₃ and trimethylamine (TMA). In Exp. 2, treatment with NaCI, NaNO₂ and NaN₃ did not produce any change in the physical characters of the crab waste. The TMA, indole and NH₃ were lower (P < .05) and no H₂S was detected in the waste treated with those …
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Dominant substrates used by methanogens in hypersaline environments
… flushed serum vials. It was hypothesized that trimethylamine (TMA) would be a dominant substrate in all ponds. Additionally, samples were incubated with substrates also reported to be of importance in hypersaline environments: methanol (MeOH); dimethylsulfide (DMS); monomethylamine (MMA); and …
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The Impact of Dietary Fat and Phosphatidylcholine on Increased Trimethylamine-N-oxide Levels
Trimethylamine-N-oxide (TMAO) is an important biomarker of atherosclerosis. TMAO is the product of a hepatic conversion of trimethylamine (TMA). Releasing of TMA moieties is dependent on the adaptation of the gut microbiota to dietary TMA containing substrates such as phosphatidylcholine (PC), …
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Instrumental Methods for Determining Quality of Blue Crab (Callinectes sapidus) Meat
… to sensory analysis. SPME-GC-MS found trimethylamine (TMA), ammonia, and indole to best correlate with spoilage of blue crab meat. TMA was found to be sensitive to the minor changes in the early stages (0 - 4 days of refrigerated storage) of spoilage for blue crab meat. Indole …
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Gut Microbiota-Generated Trimethylamine N-Oxide and Cardiometabolic Health in Humans
… microbes metabolize dietary sources to release trimethylamine (TMA). TMA is absorbed and then oxidized by flavin monooxygenase 3 (FMO3) to form trimethylamine N-oxide (TMAO). Elevated TMAO is associated with increased risk of cardiovascular disease and type 2 diabetes; however, the causal nature …
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Investigating the Role of Various Environment and Process Conditions in Wastewater Sludge Odor Generation
… role in generation of reduced sulfur and trimethylamine (TMA) odor compounds. Results revealed that poor lime dosing can lead to an increase in odors due to biological generation of volatile sulfur compounds (VSCs) during storage. In this study, a belt filter press gave a higher production …
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Gut Microbiota-Generated Trimethylamine-N-oxide and Cardiometabolic Health in Healthy Adults
… diets. Gut microbiota metabolize choline to trimethylamine (TMA) which circulates and is oxidized in the liver to form trimethylamine N-oxide (TMAO). As a result, ingestion of PC or choline could increase levels of TMAO. Preclinical studies indicate a role of TMAO in the development of …
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Thermodynamics and kinetics of ion-exchange in perchlorate-selective poly(vinylbenzyltrialkylammonium chloride) matrices
… IXFCs based on hydrophilic amines, such as trimethylamine (TMA) and triethanolamine (TEOA), exhibit relatively low selectivity but faster exchange kinetics. An IXFC based on the asymmetric hexadecyldimethylamine (HDMA) displays high effective capacity for perchlorate and relatively fast …
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Utilization of crab processing waste and chitin associated with the waste as feed for ruminants
… waste retarded degradation up to d 4. The trimethylamine (TMA) concentration and NH₃ evolution were highest for the untreated waste while the lowest concentration for TMA and NH₃ evolution were observed for the NaOH-treated waste. Addition of 1% NaNO₂ or combination of .4% NaOCl/CaOCl (1:1, …
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Investigating the Influence of Fresh and Aged Garlic Extracts on the Biosynthesis of Trimethylamine N-Oxide
… (CVD) risk, possibly by reducing the risk marker trimethylamine-N-oxide (TMAO). TMAO production in humans is largely influenced by the metabolic activity of the intestinal bacteria on dietary precursors including L-carnitine. Dietary supplementation of bioactive garlic phytochemical allicin has …