high power ultrasound combined with supercritical carbon
Inactivation of the microbiota and effect on the quality
The aim of this study was to analyze the combined effect of supercritical carbon dioxide and high-power ultrasound on the inactivation of natural microbiota and the quality attributes of pineapple juice treated in a continuous flow system Different juice residence times (3 06–4 6 min) at 100 bar and 31 5 ℃ were used The results indicated that the microbiota inactivation was complete
Extraction of capsaicinoids from malagueta pepper
The conditions of temperature and pressure of supercritical carbon dioxide were 40 3C and 15 0 5 MPa respectively The CO2 mass flow rate was fixed at 0 5 0 1 kg/h The extraction kinetics was performed in the best conditions of ultrasonic power ultrasonic in different particle diameters The results indicated that the yield of oleoresin increased 77% when ultrasound waves were
Ultrasound
was employed to show that at similar power intensities comparable initial rates (1 6 0 3 10 –3 s –1 at 95 W cm –2) were obtained with those reported for a 87 cm 3 reactor (1 8 0 2 10 –3 s –1 at 105 W cm –2) demonstrating the conservation of the physical effects of ultrasound in high-pressure sys-tems (emulsification induced by the action of acoustic forces near an
EXTRACTION OF RICE BRAN OIL USING SUPERCRITICAL
Supercritical CO 2 was pumped into the bed and the ultrasound was turned on at the selected power during the corresponding time according to the experimental design described in Table 1 Afterward the extract was collected after decompression in the micrometer valve and the solvent mass flow rate was determined by a flowmeter located at the end of collection vessel The experiments were
Inactivation of the microbiota and effect on the quality
Supercritical carbon dioxide inactivation technology represents a promising nonthermal processing method as it causes minimum impact on the nutritional food properties The aim of this study was to analyze the combined effect of supercritical carbon dioxide and high-power ultrasound on the inactivation of natural microbiota and the quality attributes of pineapple juice treated in a continuous
Supercritical CO2 extraction of lutein esters from
The ultrasound generator consists of a power amplifier and a special electro circuit designed to justify the power outputs at a constant level during the SC-CO2 extraction process The ultrasonic power outputs could be set from 0 to 400 W The maximal resistant pressure and temperature of the ultrasonic system was 35 MPa and 55 C respectively About 100 g of ground marigold powder was packed
The Journal of Supercritical Fluids
Topics related to high-pressure equipment design analytical techniques sensors and process control methodologies are also within the scope of the journal The journal publishes original contributions in all theoretical and experimental aspects of the science and technology of supercritical fluids and processes Papers that describe novel instrumentation new experimental methodologies and
Supercritical carbon dioxide combined with high power
Supercritical carbon dioxide combined with high power ultrasound: An effective method for the pasteurization of coconut water By Martina Cappelletti Giovanna Ferrentino and Sara Spilimbergo Cite BibTex Full citation Topics: Coconut water High power ultrasound Natural microbial flora Pasteurization Salmonella enterica Supercritical carbon dioxide Synergistic effect Physical and
ES2395819B1
Method of inactivation of microorganisms by combining supercritical fluids and ultrasound # The present invention relates to a method for inactivating microorganisms of a liquid product by combining supercritical and ultrasound fluids characterized in that it comprises: (a) introducing the product to be treated in at least one treatment tank provided with a device to keep the temperature
FutureFood
High power ultrasound combined with supercritical carbon dioxide for the drying and microbial inactivation of coriander Journal of CO2 Utilization Vol 24 2018 516-521: Massimo Vetralla Giovanna Ferrentino Alessandro Zambon Sara Spilimbergo A Study about the Effects of Supercritical Carbon Dioxide Drying on Apple Pieces International Journal of Food Engineering Vol 4 2018 188-190
Carbon Dioxide Use in High
This chapter intends to show the recent application scenarios of the carbon dioxide use at high pressures as solvent to obtain natural extracts enriched with bioactive compounds including the use of water as co-solvent to enhance the mixture solvating power In this chapter the description of the experimental strategy used for the supercritical carbon dioxide extraction of bioactive
Effects of a Combined Process of High‐Pressure Carbon
ABSTRACT: A combined treatment of high-pressure carbon dioxide (HPCD) and high hydrostatic pressure (HHP) was investigated as a non-thermal processing technique to enhance the safety and shelf life of carrot juice Aerobes were completely inactivated by a combined treatment of 4 90 MPa-HPCD and 300 MPa-HHP A combined treatment of 4 90 MPa-HPCD and 600 MPa-HHP effectively inactivated
Cold Pasteurisation of Liquid Foods using Dense Phase
Arreola AG et al Effect of supercritical carbon dioxide on microbial populations in single strength orange juice J Food Qual 1991 14:275-284 Erkmen O Effects of high-pressure carbon dioxide on Escherichia coli in nutrient broth and milk Int J Food Microbiol 2001 65:131-135 Dagan GF and Balaban MO
10 1016/j carbon 2011 08 075
Other chemicals and solvents were purchased from Sigma–Aldrich were used as received /PMWCNT was placed into a high pressure chamber and exposed to supercritical carbon dioxide (scCO 2 ) or ethane (scEthane) under a fixed condition of 100 C and 120 atm for 2–3 h then the pressure was quickly released to atmospheric condition Four milligram of SCF treated MWCNT was then dissolved
Environmentally Friendly Organic Synthesis in
We propose to use supercritical fluids (SCFs) specifically supercritical carbon dioxide (SCCO2) as the reaction media Although SCFs have seldom been explored for this purpose they have properties that could make them nearly the ideal media for conducting organic synthesis reactions SCFs are inert to most reactions non-toxic cheap readily available and environmentally acceptable In
Preparation of Porous Biodegradable Polymer and Its
Using supercritical carbon dioxide (scCO 2 ) as an alternative to conventional methods in the preparation of porous biodegradable polymer and polymer/nanocomposites for tissue engineering has attracted increasing interest in recent years due to the absence of using organic solvents and the ability to incorporate thermosensitive biologicals without loss of bioactivity
Extraction of phytosterols and tocopherols from rapeseed
Supercritical carbon dioxide extraction of high-value substances from soybean oil deodorizer distillate J Ind When ethanol was consumed it was combined into the SC-CO 2 stream with a flow rate of 0 5 mL/min To create a countercurrent flow between the liquid sample (downward) and the SC-CO 2 (upward) introduction of the liquid sample was done through the top of the column with a flow
SUPERCRITICAL CARBON DIOXIDE EXTRACTION OF OLEORESIN
III Iberoamerican Conference on Supercritical Fluids Cartagena de Indias (Colombia) 2013 1 SUPERCRITICAL CARBON DIOXIDE EXTRACTION OF OLEORESIN FROM MALAGUETA PEPPER (CAPSICUM FRUTESCENS L ) ENHANCED BY ULTRASOUND Philipe dos Santos Ana C de Aguiar Camila A Rezende2 and Julian Martnez* Food Engineering Departament Food Engineering College
Soybeans Processing for Biodiesel Production
methanol and KOH as a catalyst They showed the positive effe ct of ultrasound on biodiesel yield enhancement (Santos et al 2009) Cintas et al (2010) used high power ultrasound in a continuous system for biodiesel production from soybeans They used ultrasound after heating the oil and premixing with a mechanical stirrer Their results
supercritical carbon dioxide Related Publications
Keywords: Carbon capture and storage supercritical carbon dioxide oxy-combustion netpower cycle heat exchanger design pinch point analysis oxyturbine power cycles Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 562
10 1016/j carbon 2011 08 075
Other chemicals and solvents were purchased from Sigma–Aldrich were used as received /PMWCNT was placed into a high pressure chamber and exposed to supercritical carbon dioxide (scCO 2 ) or ethane (scEthane) under a fixed condition of 100 C and 120 atm for 2–3 h then the pressure was quickly released to atmospheric condition Four milligram of SCF treated MWCNT was then dissolved
Ultrasonic
In microbiology ultrasound is primarily associated with cell disruption (lysis) or disintegration (Allinger 1975) When sonicating liquids at high intensities the sound waves that propagate into the liquid media result in alternating high-pressure (compression) and low-pressure (rarefaction) cycles with rates depending on the frequency During the low-pressure cycle high-intensity
SOUTH 8 TECHNOLOGIES INC
The high-performance hardware combined with the company's ultrasound application programming interface (API) software provides an easy-to-embed subsystem Cephasonics technology and products are targeted at the following markets • Medical imaging market in ultrasound • Medical mHealth ultrasound measurement • Industrial ultrasound measurement imaging • Life style-enhancing
High power ultrasound combined with supercritical carbon
01/03/2018This work explores the use of supercritical carbon dioxide (scCO 2) drying in combination with High Power Ultrasound (HPU) to enhance both the dehydration efficiency and the microbial inactivation on coriander leaves ScCO 2 drying process alone was compared with a combined drying process (HPU + scCO 2) at different powers (10 40 and 80 W) different drying times (up to 90 min)
Homogeneous Catalysis in Supercritical Carbon Dioxide
Supercritical carbon dioxide is non-toxic and environmentally acceptable It is non- flammable thus its use does not introduce a safety hazard during operation It has a low critical temperature 31 3 ?C and a moderate critical pressure 73 8 bar (1073 psia) it is cheap and readily available in large quantities We propose to concentrate on two classes of reactions commonly performed by
Extraction of capsaicinoids from malagueta pepper
The conditions of temperature and pressure of supercritical carbon dioxide were 40 3C and 15 0 5 MPa respectively The CO2 mass flow rate was fixed at 0 5 0 1 kg/h The extraction kinetics was performed in the best conditions of ultrasonic power ultrasonic in different particle diameters The results indicated that the yield of oleoresin increased 77% when ultrasound waves were
Cavitation
The feasibility of ultrasound-induced in situ radical formation in liquid carbon dioxide was demonstrated The required threshold pressure for cavitation could be exceeded at a relatively low acoustic intensity as the high vapor pressure of CO2 counteracts the hydrostatic pressure With the use of a dynamic bubble model the formation of hot spots upon bubble collapse was predicted
Large
The intense impact force generated from high-pressure acoustic cavitation in a supercritical CO 2 (scCO 2 )/H 2 O system and the superior penetration ability of scCO 2 were combined to enhance the exfoliation efficiency of natural graphite The impacts of the aqueous solution content ratio system pressure ultrasonic power and surfactant addition on graphite exfoliation efficiency were
supercritical carbon dioxide Related Publications
Keywords: Carbon capture and storage supercritical carbon dioxide oxy-combustion netpower cycle heat exchanger design pinch point analysis oxyturbine power cycles Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 562
Non
Supercritical carbon dioxide (SC-CO 2 ) is a novel method for food pasteurization but there is still room for improvement in terms of the process shortening and its use in products with high oil content This study addressed the effect of high power ultrasound (HPU) on the intensification
Cavitation
The feasibility of ultrasound-induced in situ radical formation in liquid carbon dioxide was demonstrated The required threshold pressure for cavitation could be exceeded at a relatively low acoustic intensity as the high vapor pressure of CO2 counteracts the hydrostatic pressure With the use of a dynamic bubble model the formation of hot spots upon bubble collapse was predicted






