1. Sources of plant extracts 2. Extraction techniques for plant extracts 3. Chemistry of plant extracts 4. Encapsulation techniques for plant extracts 5. Stability of plant extracts 6. Plant extracts as antimicrobials 7. Plant extracts as preservatives 8. Plant extracts as nutrient enhancers 9. Plant extracts as flavoring agents 10. Plant extracts as coloring agents 11. Plant extracts as enzymes 12. Plant extracts as packaging aid 13. Health benefits of plant extracts 14. Opportunities and challenges of plant extracts to use in food applications