ADVANCING CANADIAN AGRICULTURE AND AGRI-FOOD PROJECT # AB0159CO ‘‘Testing of Photocatalytic Technologies for Use on Food Surfaces: Use of Natural Products as Photocatalytic Agents’’ Nick D. Allan, M.Sc. Contract Research Manager
Nov 12, 2014
ADVANCING CANADIAN AGRICULTURE AND AGRI-FOODPROJECT # AB0159CO
‘‘Testing of PhotocatalyticTechnologies for Use on Food Surfaces:
Use of Natural Products as Photocatalytic Agents’’
Nick D. Allan, M.Sc.Contract Research Manager
Biofilm Primer
The ProblemThe Need for Hard/Food Surface
Sanitizers
CFIA’s food safety yearly spending is CAD$360M1
The National Cattlemen’s Beef Association estimates $1B in beef sales are lost each year in the United States to spoilage1
The Canadian Cattleman’s Association estimates that $ 200M in sales are lost each year2.
1)Food safety Report of the US Government Accountability Office, 20052)The Cattlemen’s news Letter. Vol. 6, 2005.
The ProblemBarriers to Developing a Good Hard
Surface Sanitizer
Effectiveness Biofilms (ACAAF project # AB00008) Concentration Interference/Inactivation by environment
Duration of Efficacy Human/Food Safety
The Solution: Photo Dynamic Therapy
Contaminating Biofilm
The Solution: Photo Dynamic Therapy
Innovotech compound
Light Source
1O2
The Solution: Photo Dynamic Therapy
1O2
1O21O2
bactericidal effect
Project Overview: The Development of Sani-LuxTM
PHASE I: Food Dye Screening Physical Properties Biological activities
PHASE II: Hard Surface and Food Surface Screening (Practical Testing)
PHASE III: Filing as a Sanitizer with CFIA
PHASE I: Food Dye Screening
Evaluation of Most known food dyes Solubility (water, olive oil, sorbitol, PEG, Glycerin) Biological Activities Salmonella Staphylococcus aureus E. coli O157:H7 Listeria monocytogenes
Concentration range Light Intensity Contact Time
PHASE II: Food and Hard Surface Screening
Evaluation against E. coli and Listeriamonocytogenes Concentration range @ 16 hours Variation in effectiveness
~2.0 Log ~1.0 Log
PHASE II: Food and Hard Surface Screening
Evaluation against Salmonella and Listeriamonocytogenes Concentration range
@ 16 hours Variation in
effectiveness 3.8 Log reduction for
Listeria 2.4 Log Reduction for
Salmonella
PHASE II: Food and Hard Surface Screening
Hard Surface Evaluation against E. coli 40 ppm @ 3.5 hours 4.5 Log Reduction
PHASE III: Filing with CFIA
Registration Package: AOAC Carrier Testing Log10 Reduction Testing Label Claim Organisms (Salmonella, S. aureus, E. coli
O157:H7, Listeria monocytogenes, Campylobacter jejuni) Must Demonstrate 95% killing (~1.5 Log Reduction)
40 ppm under light intensity of 680-780 lumens using Lithonia Lighting at 24±2 °C for 3.5 hours
COA Sample Label IFU
PHASE III: Sample Label
PHASE III: IFU
Sani-LuxTM Summary
Broad spectrum kill: Listeria, Staphylococcus,Campylobacter, E. coli and Salmonella, as well asfungal pathogens such as Fusarium, Aspergillus,Pythium, and Penicillium species.
Effective on a variety of surfaces: can be used onstainless steel, ceramic, plastic, concrete, or granite.
Non-corrosive to metals encountered in household,beverage and food processing applications.
Non-toxic (Approved for use in foods at 100X the active concentration).
GREEN: contains only natural products. Natural Deodorizer: Leaves cleaned areas smelling
fresh. Continually active when a light source is present.