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Using Plant-Based Antimicrobials to Make Organic Leafy Greens Safer

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Presentation on theme: "Using Plant-Based Antimicrobials to Make Organic Leafy Greens Safer"— Presentation transcript:

1 Using Plant-Based Antimicrobials to Make Organic Leafy Greens Safer
Divya Jaroni, Ph.D Assistant Professor Food Microbiology Oklahoma State University

2 The Dangerous Bug!!

3

4 Leafy Greens Tested Baby Spinach Adult Spinach Iceberg Lettuce
Romaine Lettuce

5 Antimicrobials Tested Plant Extracts
Grapeseed Apple Hibiscus Olive

6 Antimicrobials Tested Essential Oils and Compounds
Oregano/Carvacrol Lemongrass/Citral Cinnamon/Cinnamaldehyde

7 Research Leafy greens contaminated with E. coli
Washed with plant-based extracts, essential oils, or compounds Bagged Stored in the refrigerator for 3 days Tested efficacy of plant antimicrobials immediately after washing, on day 1 and day 3 of storage

8 Findings Immediate reduction (on Day 0) in bacterial populations
Extracts: Most effective – Olive Extract Essential Oils: Most effective - Oregano oil Plant Compounds: Most effective – Carvacrol NOTE: Carvacrol comes from Oregano!!!

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