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.
Results
Showing 1 to 20 of 53 for “"ultrasonication"”.
-
Effect of Ultrasonication on Biofilm Forming Ability of Common Dairy Sporeformers
… the quality of dairy products. Amongst these, ultrasonication is a promising non-thermal technique for the inactivation of thermoduric sporeformers and their endospores. Current study was carried out using ultrasonication as a non-thermal technique to evaluate its effect on biofilm forming …
-
Effects of Ultrasonication on the Antioxidant and Anti-diabetic Properties of Hydrolyzed Oat Proteins
… with ultrasonic cleaner bath and high-powered ultrasonication, after which, the proteins were extracted and hydrolyzed using three different proteases (Flavourzyme, Papain, and Alcalase). The effect of ultrasonication of brans had a minimal effect on the secondary structure, free thiol, zeta …
-
Ultrasonication as an abiotic elicitor - effects on antioxidant capacity and overall quality of romaine lettuce
… from reports on responses of cell cultures to ultrasonication. Further studies are needed to achieve a better understanding of the physiological responses of fresh produce to ultrasound treatment, which would help obtain value-added fruit and vegetable products.
-
The potential antioxidant and anticancer properties of polyamines and their response to high-intensity ultrasonication
… but not putrescine, may prevent cell growth. Ultrasonication was found to be efficient in maintaining the quality of lettuce during storage, correspondingly, the polyamine levels in sonicated lettuce were decreased after 72 hours storage compared to control lettuce. Further studies are needed …
-
Ultrasonication as a strategy for enhancement of antioxidant capacity and overall quality in hydroponically grown lettuce
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-08-01
-
Enhanced physicochemical and functional properties of pea (Pisum sativum) protein by pH-shifting and ultrasonication combined process
… the effects of pH-shifting in combination with ultrasonication on the structural and physicochemical properties of pea protein isolate (PPI). PPI dispersions (30 mg/ml each) were treated with ultrasonication, pH-shifting, and pH-shifting in combination with ultrasound and compared to control (no …
-
Effects of ultrasonication in combination with selected sanitizer and surfactant on the quality and microbial safety of produce
In the United States, outbreaks of foodborne illnesses caused by pathogenic microorganisms associated with consumption of fresh and fresh-cut produce is a recurring problem. It is estimated that 1 in every 6 US residents contracts a foodborne illness every year. There is an urgent need to develop …
-
Inactivation of Thermodynamic Sporeformers and Spores in Skim Milk by Continuous Ultrasonication and Hydrodynamic Cavitation in Combination with Thermal Treatments
… were conducted to determine the effectiveness of ultrasonication and hydrodynamic cavitation, in a continuous mode, alone and in combination with thermal treatments, on heat resistant aerobic sporeformers and spores in skim milk, and skim milk concentrate. The first study was conducted to …
-
Use of ultrasonication, thermogravimetric analysis and newly developed hot-air drying platform for evaluation and optimization of drying processes of agricultural materials
… with different microstructures. The effects of ultrasonication as a pretreatment were also evaluated. In the first study, the use of ultrasonication as a pretreatment for the enhancement of the hot-air drying of selected fruits and vegetables and the hydration of barley grains was evaluated. The …
-
Mechanisms of Microstructure Formation Under the Influence of Ultrasonic Vibrations
… new branch of science - sonochemistry. However, ultrasonication has not found wide commercial application in the solidification processing. The reason for that is the complexity of underlying phenomena and the lack of predicting models which correlate processing parameters with the properties of …
-
Preparation of model cobalt catalysts for Fischer-Tropsch synthesis using ultrasound preparation techniques
… the size distributions can be adjusted. Here ultrasonication was used to decomposed a tricarbonyl precursor in n-decane to prepare small cobalt crystallites. The aim of this study was to vary the cobalt crystallite size distribution by adjusting the preparation conditions. Transmission …
-
Strategies to influence temperature stability of dark chocolate in tropical regions
… addition and fractionation of various lipids and ultrasonication technology have been explored to avoid bloom formation and increase melting point. However, the combination of these technologies has not been reported. The use of palm oil in the chocolate industry has gained attention for its …
-
Synthesis of Functionalized Poly(dimethylsiloxane)s and the Preparation of Magnetite Nanoparticle Complexes and Dispersions
… were dispersed into PDMS carrier fluids by ultrasonication, resulting in magnetic PDMS fluids with potential biomedical applications. Magnetite particles (100 nm to 1 mm in diameter) were prepared by crystallization from goethite/glycol/water solutions under pressure. Two methods for …
-
Characterization, Functionalization, and Adsorption Behavior of Single-Walled Carbon Nanotubes towards Bisphenol A and 17 Β- Estradiol
… was developed to understand the effect of ultrasonication on the dispersion of SWNTs in water. The results of adsorption experiments have showed that BPA and E2 can be removed from water by adsorbing onto SWNTS, however, the two compounds vary in their affinity towards adsorbent. Alteration …
-
Investigation on Factors Influencing Ultrasound-assisted Surface Decontamination of Fresh and Fresh-cut Vegetables
… were studied. Finally, the application of ultrasonication for surface decontamination of lettuce coring knives was also investigated. The overall quality scores of baby spinach, lollo rosso, loose leaf lettuce, iceberg lettuce, and romaine lettuce remained unchanged during a 2-week storage …
-
Preparation and Characterization of Electrospun rGO-Poly(ester amide) Tissue Engineering Scaffolds
… differentiation. The novel combination of ultrasonication and leaching of a sacrificial polymer was used to modify scaffold porosity, and resulted in an increase in pore area evaluated through image analysis. This approach aims to potentially promote tissue maturation with electrospun PEA …
-
Understanding the Impact of Non-thermal Processing and CO2 Assisted Extrusion on Antioxidant, Textural and Functional Properties of Corn, Sorghum and Apple Pomace Based Extrudates
… the natural fermentation followed by the batch ultrasonication, SF and AP showed a significant (p</p>
-
Fundamental Study of Particle Formation, Transport, Deposition and Filtration for Semiconductor Applications
… with various methods, e.g., pulsed air jet, ultrasonication, and acid dissolution, were evaluated in Chapter 6. We deposited particles on two different surfaces: 200 mm wafers and forked tubes. For depositing particles on 200 mm wafers, PSL particles were deposited by electrophoresis and …
-
Synthesis of Zr4+/Ag+ metal oxides modified zeolite for application in fluoride and pathogens removal from water
… dissolution of calcined bentonite clay through ultrasonication, followed by hydrothermal treatment to obtain zeolite. The ultrasonication conditions were optimized by varying NaOH concentration (0.5 to 2.5 M) and aging time (10 to 120 minutes). Temperature (70 °C to 140 °C) and time (1.5 to 6 …
-
Polymeric Melodies: Polyetherimide Modification-Based Acoustic Membranes and Sonochemical Degradation of Polystyrene
… (PS) using acoustic energy. PS is degraded using ultrasonication into benzene using substantially lower amounts of catalyst compared to contemporary methods. Thin layers of polymer are often deposited onto single-layer graphene (SLG) to act as support substrates for large radius suspensions of …
Page 1 of 3