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UPCOMING EVENTS |
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Lunch Speaker – Monday, April 28, 2008 “Structural Analysis
of Spray-Dried Powders by Confocal Laser Scanning Microscopy” Date: Monday, April 28th, 2008 Cost: $15.00 per person ($10 for students) payable at the door by cash or check. Correct change is appreciated. RSVP: to Debbie Paetznick at paet0012@umn.edu. Registration is limited to the first 30 people. ABSTRACT The internal and external morphology of spray-dried powders were investigated as a function of the operating conditions of the spray dryer by confocal laser scanning microscopy (CLSM) and SEM. The blend of gum Arabic (GA) and maltodextrin (MD) solution, which is normally used in the encapsulated food industry, was prepared at 30% solid content of the mass ratio of GA and MD of 1 to 3. In order to make the powder particles visible by CLSM, fluorescein sodium was used to label the solid materials. The solutions were fed through an Ohkawara L-8 type spray dryer at different inlet air temps and atomizing speeds. AN increase in the vacuole as well as the particle size was observed when the inlet air temp was increased. Smaller vacuoles and lower yields of vacuoles were observed when using low atomizing speeds. The d of powders decreased with an increase of the inlet air temp as well as with an increase of the atomization speed. Furthermore, the surface morphology presented smooth and shriveled particles for all powders, but deeper surface grooving for low inlet air temps. More grooves were observed by using a low atomizing speed.
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RELATED EVENTS |
MORE COMING SOON
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RECENT EVENTS |
FINE PARTICLE SOCIETY
INTERNATIONAL CONFERENCE
December 18-21, 2006
San Diego, CA
FINE PARTICLE SOCIETY
Dr.
Teo Ariman, President
TEL: (760) 598-0131
click above picture for a direct link to the Particle Society Website
Speaker: Dr. Peter Raynor: Assistant Professor, University of Minnesota
Download the entire PRESENTATION
Particle
Society - October Lunch Speaker - “Diesel
Aerosol Measurements”
Technical Presentation: Diesel Aerosol Measurement and Control
The
Particle Society of Minnesota Luncheon Speaker Series was held on
Thursday, June 22nd.
The topic was "Preclinical Testing of
Artificial Disc Prostheses:
An
Evolution of Wear Test Methods
The Abstract can be downloaded here at full Abstract. Special thanks to Metronics for hosting this Luncheon Speaker Series for June.
Particles 2006: Medical/Biochemical Diagnostic, Pharmaceutical, and Drug Delivery Applications of Particle Technology was held on May 13-16, 2006 at the Wyndham Orlando Resort. For more information on technical information, click here.
PSM Spring Program: Focus on Powder Processing was held on March 8th, 2006. The
event was a great success. For a schedule of the program, click here.
Copyright 2006, Particle Society of Minnesota