Utrasonic topic: "How to use ultrasonicators"
Ultrasonicators are ultrasonic probe-type devices, which are used for manifold applications including homogenization, dispersing, wet-milling, emulsification, extraction, lysis, disintegration, and chemical reactions.
The working principle of an ultrasonicator is based on the phenomenon of acoustic cavitation. When intense ultrasound waves are coupled into a liquid, alternating high-pressure / low-pressure cycles travel through the liquid. During the low-pressure cycles, the ultrasonic waves create minuscule vacuum bubbles, which grow over several pressure cycles. When the vacuum bubbles reach a volume at which they cannot absorb further energy, they implode violently during a high-pressure cycle. Briefly, cavitation is the growth and collapse of vacuum bubbles or cavities. During the bubble implosion, an exceptionally energy-dense field is created. In an acoustic cavitation field, extreme conditions – including very high temperature and pressure differentials, turbulences, shear forces and liquid jets – can be measured. These intense cavitational forces are used to fulfil the manifold applications mentioned above.
Ultrasonicators create cavitation to apply it purposefully to liquids, slurries and gas in order to achieve particle size reduction, mixing of oil/water phases, cell disruption or to induce chemical reactions.
Sonication (also ultrasonication) describes the process of applying ultrasound energy to a liquid or slurry. Hielscher Ultrasonics designs, manufactures and distributes high-intensity, low-frequency ultrasonicators from lab & bench-top to fully industrial scale.
Read more about ultrasonicators and their applications!
12 pages about this topic are being shown:
Grapes (Vitis vinifera), vine and wine by-products are rich in polyphenols and other bioactive substances, which are valuable compounds for the production of medicinal and nutritional supplements. Ultrasonic extraction allows for the simple and highly efficient isolation of grape- and…https://www.hielscher.com/ultrasonic-extraction-of-active-compounds-from-grape-and-wine-by-products.htm
Polyols are synthetic esters produced mainly via a transesterification of triglycerides from vegetable oils or animal fats. These polyols are raw material for the production of polyurethans, biolubricants and other cemicals. Ultrasonication is used to enhance transesterification reactions by applying…https://www.hielscher.com/polyol-synthesis-via-ultrasonic-transesterification.htm
Homogenizers are a type of mixers, which apply mechanical forces to blend, emulsify, disperse, and dissolve liquid-liquid and solid-liquid systems. Depending on the homogenizer model rotational shear, nozzles or high-power ultrasound are used to create the required forces to disintegrate…https://www.hielscher.com/homogenizers-working-principle-use-and-scale-up.htm
The rapid procedure of ultrasonic extraction and the therefrom resulting time savings in extract production are one of many advantages of ultrasonic extraction of bioactive compounds from plants. Ultrasonic extraction has been scientifically compared to alternative extraction techniques such as…https://www.hielscher.com/ultrasonication-outcompetes-other-extraction-methods-by-speed.htm
Kombucha is a fermented beverage containing tea, sugar, bacteria, yeast and often a little amount of juice, fruit or spices as flavouring. Kombucha as well as fermented juice and vegetable juices are known for having positive effects on health, strengthening…https://www.hielscher.com/ultrasonically-improved-kombucha-fermentation.htm
Nasal sprays and mouth sprays are widely used drug administering solutions to apply active ingredients to the respiratory mucosa. Ultrasonic emulsification is a highly efficient and reliable technique to produce highly efficacious nasal and mouth spays with very high bioavailability,…https://www.hielscher.com/nasal-spray-formulations-emulsified-with-ultrasound.htm
Schizophyallan is a fungal β-glucan with immunomodulating properties. For highly active medicinal effects, schizophyllan must have a low molecular weight in order to show improved bioavailability. Ultrasonication has been proven to reduce the molecular weight of schizophyllan. As reliable and…https://www.hielscher.com/ultrasonic-production-of-highly-purified-schizophyllan-%ce%b2-glucans.htm
Gold nanoparticles of uniform shape and morphology can be efficiently synthesized via sonochemical route. The ultrasonically promoted chemical reaction of gold nanoparticle synthesis can be precisely controlled for particle size, shape (e.g., nanospheres, nanorods, nanobelts etc.) and morphology. The efficacious,…https://www.hielscher.com/efficient-and-controlled-synthesis-of-gold-nanoparticles.htm
High power ultrasonication can efficient and reliably break-up particle agglomerates and even disintegrate primary particles. Due to its high-performance dispersion performance, probe-type ultrasonicators are used as preferred method to create homogeneous nanoparticle suspensions. Reliable Nanoparticle Dispersion by Ultrasonication Many industries…https://www.hielscher.com/reliable-nanoparticle-dispersion-for-industrial-applications.htm
The ASTM D5621 standard test method describes the sonic shear stability testing of hydraulic fluids and their viscosities at 40°C and 100°C, respectively. In order to test and determine the viscosity stability of hydraulic fluids under shear, a reliable testing…https://www.hielscher.com/ultrasonicators-for-astm-d5621-sonic-shear-stability-of-hydraulic-fluids.htm
The ASTM D2603 standard describes the sonic shear stability testing of hydraulic fluids under ultra-sonically induced shear stress. Hielscher ultra-sonicators are used as reliable shear creating devices used for shear stability testing of hydraulic fluids in accordance to ASTM D2603…https://www.hielscher.com/ultra-sonicators-for-astm-d2603.htm
Thickening sauces, juices, jams and other foods by gelation is a common process in the production of liquid foods. Ultrasonic extraction of pectins and natural intracellular sugars from fruits and vegetables is a highly efficient method to promote the gelation…https://www.hielscher.com/improved-fruit-and-vegetable-gelation-by-ultrasonics.htm