Seminar Schedule Next Seminar: October 24rd, Xuan Li (PhD Defense Practice) "Improved Detection Techniques for Foodborne Pathogens: Separation Techniques Using Crossflow Microfiltration" Separating and concentrating microorganisms in foods have been suggested as an alternative to enrichment culture as a pre-analytical step of detection in accordance with the need of a truly real-time technique for foodborne pathogen detection. Direct concentrating and recovering cells from food matrices is difficult due to the heterogeneous nature of foods and there is a lack of method to cope with this difficulty. As a remedy to this problem, this work proposed a new protocol which includes sampling from food by homogenizing, enzymatic pretreatment of crude food homogenates, pre-filtration, and cell concentration and recovery using a cell concentration instrument. The principle of instrument is to process the food samples by microfiltration in a cross-flow mode to concentrate the sample to a small volume, increasing the concentration of microbial cells to a detectable level so that they may be effectively probed for the presence of pathogens. In addition, a mathematical model is developed to clarify the fouling process and to provide insight into the optimization of membrane design, operational conditions and cleaning procedures. All LORRE graduate students are expected to attend. Schedule for the Fall Semester Date Location Seminar Aug 29 Fu Room (POTR 234) Seockmo Ku Sept 5 Fu Room (POTR 234) Ja Kyong Ko Sept 12 Fu Room (POTR 234) Isaac Emery Sept 19 Fu Room (POTR 234) Safety Retraining Sept 26 ABE 301 Dr. Ladisch Oct 3 Fu Room (POTR 234) Ximing Zhang Oct 17 Fu Room (POTR 234) Dr. Engelberth Oct 24 Fu Room (POTR 234) Xuan Li Oct 31 Fu Room (POTR 234) Barron Hewetson Nov 7 No Seminar AIChE Meeting Nov 14 ABE 301 Fernanda Cunha Nov 21 Fu Room (POTR 234) Iman Beheshti Dec 5 Fu Room (POTR 234) Studie Red Corn Dec 12 Fu Room (POTR 234) Study Break!