Workshop: Controlling Listeria in Apple Packinghouses
Event Details
Date
June 26, 2025
Time
8:30 am - 4:30 pm
Location
Hudson Valley Research Lab and Porpiglia Farms
3357 Route 9W
Highland, NY 12528
Cost
Registration : $40.00
(addl attendee $40.00 ea.)
Host
Eastern New York Commercial HorticultureWorkshop: Controlling Listeria in Apple Packinghouses
Join Cornell University Food Science experts, along with CCE ENYCHP specialists Dan Donahue and Elisabeth Hodgdon for a day-long intensive workshop on managing Listeria in apple packinghouse environments. We will review key aspects of Listeria biology, cleaning and sanitizing principles and techniques, and monitoring programs. The latter half of the program will include hands-on activities at Porpiglia Farms. Lunch and morning refreshments are included in registration fee. Registration is available on a first come, first serve basis. Please contact Dan Donahue (djd13@cornell.edu or 518-322-7812) with questions and requests for accommodations, including dietary restrictions.
This program is funded in part by the Northeast Center to Advance Food Safety.
Agenda:
Morning Session: Hudson Valley Research Lab, 3357 Route 9W, Highland, NY
8:00 AM
8:30 AM | Sign-in & Refreshments (pre-registration required, no walk-in's)
Welcome & Introductions - Dan Donahue and Elisabeth Hodgdon, CCE ENYCHP |
9:00 AM | Listeria in the Produce Packhouse Environment Abby Snyder, Associate Professor, Cornell University Rory Wang, Graduate Student, Cornell University |
10:15 AM
10:30 AM | Break
Cleaning and Sanitation Calvin Slaughter, Graduate Student, Cornell University |
11:30 AM | Verification with Environmental Monitoring Programs Lyle Massoia, Graduate Student, Cornell University |
12:30 PM | Lunch |
1:30 PM | Drive to Porpiglia Farms |
Afternoon Session: Porpiglia Farms, 1 Porpiglia Drive, Marlboro, NY
1:45-2:15 PM Packinghouse Tour & Description of Break-Out Sessions
Breakout Sessions (2:15-4:15 PM): 20 Minutes per activity
- A)Case Study Identifying Listeria monocytogenes Risk Factors in Packinghouses
- TBD
- B)Cleaning of Roller Brushes & Areas Adjacent to Food Contact Surfaces
- TBD
- C)Using ATP Testing to Verify Cleaning Effectiveness
- Lyle Massoia, Graduate Student, Cornell University
- D)Sanitizer Concentration Verification
- Calvin Slaughter, Graduate Student, Cornell University
- E)Proper Cleaning of Drains
- Rory Wang, Graduate Student, Cornell University
- F)Visual Inspections of Brushes
- Abby Snyder, Associate Professor, Cornell University


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