Ultrasonic velocity measurements are used to elucidate various aspects of solvation chemistry,including solute–solute and solute–solvent interactions.Herein,an attempt is made to study a behavior of two sweeteners,D...Ultrasonic velocity measurements are used to elucidate various aspects of solvation chemistry,including solute–solute and solute–solvent interactions.Herein,an attempt is made to study a behavior of two sweeteners,D-fructose and D-sorbitol,in aqueous and non-aqueous media was attempted.D-fructose is a simple sugar found in many foods and can be consumed by diabetics and people suffering from hypoglycemia.D-Sorbitol is a sugar substitute used in diet foods,sugar-free chewing gum,mints,cough syrups,mouthwash,toothpaste etc.,D-sorbitol is an excellent humectant and texturizing agent that is also used in other products such as pharmaceuticals and cosmetics.The interactions between the solute and solvent molecules are explained in terms of the solvation numbers of both aqueous and non-aqueous solutions of D-fructose and D-sorbitol.The viscosity study correlates the viscosity of the solution with solvation;here,density,ultrasonic velocity,and viscosity of aqueous and non-aqueous solutions at various concentrations are measured at different temperatures ranging from 35 to 55℃.These parameters provide sufficient information on the interaction between molecules that may aid chemists in analyzing the mechanisms of the behavior of D-fructose and D-sorbitol in water and the water–ethanol medium through which they are consumed.The Fourier transforms infrared spectra of pure solvent,salt,and their solutions were recorded and analyzed for confirmation.展开更多
The rock processing residue(RPR)waste is used for part of the ceramic products.The present work deals with the unused waste useful for making ceramic materials and save the area and the dump space.The residues are ini...The rock processing residue(RPR)waste is used for part of the ceramic products.The present work deals with the unused waste useful for making ceramic materials and save the area and the dump space.The residues are initially analyzed with the chemical and spectroscopic method.The residues are mixed with clay of proportions 0-50 wt%in steps of 10%.The prepared specimens are characterized with Fourier transform infrared(FTIR),X ray fluorescence(XRF)for chemical,mechanical,and physiochemical properties,such as density,compressive strength,weight loss on ignition and porous nature,which are measured through the selective instrument.The thermal stability of the product was tested by firing at 950℃.This says the rock residues are useful for making ceramic and related materials with high concentrations.展开更多
Starch metabolism due to adsorption of enzyme amylase on the starch substrate is outlined briefly.To explore the necessary conditions required for effective adsorption in biological media,ultrasonic techniques have be...Starch metabolism due to adsorption of enzyme amylase on the starch substrate is outlined briefly.To explore the necessary conditions required for effective adsorption in biological media,ultrasonic techniques have been applied to elucidate the structural variations and component destruction in the considered systems.The ability of the enzyme amylase to break the linkages in starch(substrate)was determined from the observed ultrasonic velocity,which highlights the deciding factors of metabolism.It is concluded that the phenomenon of adsorption is decided by the surface area,the number of subunits held by the substrate,and the structure existing in the adsorbent,and above all,a relatively higher quantity of enzyme and the substrate.展开更多
文摘Ultrasonic velocity measurements are used to elucidate various aspects of solvation chemistry,including solute–solute and solute–solvent interactions.Herein,an attempt is made to study a behavior of two sweeteners,D-fructose and D-sorbitol,in aqueous and non-aqueous media was attempted.D-fructose is a simple sugar found in many foods and can be consumed by diabetics and people suffering from hypoglycemia.D-Sorbitol is a sugar substitute used in diet foods,sugar-free chewing gum,mints,cough syrups,mouthwash,toothpaste etc.,D-sorbitol is an excellent humectant and texturizing agent that is also used in other products such as pharmaceuticals and cosmetics.The interactions between the solute and solvent molecules are explained in terms of the solvation numbers of both aqueous and non-aqueous solutions of D-fructose and D-sorbitol.The viscosity study correlates the viscosity of the solution with solvation;here,density,ultrasonic velocity,and viscosity of aqueous and non-aqueous solutions at various concentrations are measured at different temperatures ranging from 35 to 55℃.These parameters provide sufficient information on the interaction between molecules that may aid chemists in analyzing the mechanisms of the behavior of D-fructose and D-sorbitol in water and the water–ethanol medium through which they are consumed.The Fourier transforms infrared spectra of pure solvent,salt,and their solutions were recorded and analyzed for confirmation.
文摘The rock processing residue(RPR)waste is used for part of the ceramic products.The present work deals with the unused waste useful for making ceramic materials and save the area and the dump space.The residues are initially analyzed with the chemical and spectroscopic method.The residues are mixed with clay of proportions 0-50 wt%in steps of 10%.The prepared specimens are characterized with Fourier transform infrared(FTIR),X ray fluorescence(XRF)for chemical,mechanical,and physiochemical properties,such as density,compressive strength,weight loss on ignition and porous nature,which are measured through the selective instrument.The thermal stability of the product was tested by firing at 950℃.This says the rock residues are useful for making ceramic and related materials with high concentrations.
文摘Starch metabolism due to adsorption of enzyme amylase on the starch substrate is outlined briefly.To explore the necessary conditions required for effective adsorption in biological media,ultrasonic techniques have been applied to elucidate the structural variations and component destruction in the considered systems.The ability of the enzyme amylase to break the linkages in starch(substrate)was determined from the observed ultrasonic velocity,which highlights the deciding factors of metabolism.It is concluded that the phenomenon of adsorption is decided by the surface area,the number of subunits held by the substrate,and the structure existing in the adsorbent,and above all,a relatively higher quantity of enzyme and the substrate.
