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Microorganisms Food Safety Haccp


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Microorganisms Food Safety Haccp

  1. 1. Microorganisms, Food Safety & HACCP
  2. 2. What is a Microorganism? • Microorganisms (microbes) are viruses, bacteria and fungi • They are too small to be seen with the naked eye, but can be Image Credit: USDA seen with a microscope Photo by: Scott Bauer • They are single celled organisms
  3. 3. Where Do Microbes Live? • Microbes live in the water you drink, the food you eat, and the air you breathe. • Right now, billions of microbes are swimming in your belly and mouth, and crawling on your skin!
  4. 4. Are Microbes Harmful? • 95% of all microbes are harmless • Some are very beneficial to humans • Bacteria in people’s intestines help to digest food • Some harmless microbes protect people by competing with harmful microbes for Image Credit: space
  5. 5. How do Microbes Multiply? • They multiply QUICKLY! • Scientists often use scientific notation to express their large numbers Number Scientific Notation 1 1x100 100 1x102 10,000 1x104 1,000,000 1x106
  6. 6. Some Common Harmful Bacteria in Food Name Where is it Disease/Result found? Salmonella Raw meats, Nausea, poultry, dairy vomiting, products, diarrhea, fever vegetables and fruits E.Coli 0157:H7 Raw and undercooked Abdominal pain, ground beef, other red cramps, nausea, meat, unpasteurized milk, soft cheese, vomiting, diarrhea, fresh fruit and occasional fever vegetables
  7. 7. Salmonella & E.Coli 0157:H7 Salmonella E.Coli 0157:H7 Image Credit: EHA Consulting Group Inc.
  8. 8. Why are Space Scientists Concerned about Microbes? • Seven astronauts (each with their own microbes) will be living in small, air-tight space for months or years • Harmful microbes can spread and make the crew sick • Aspects of spaceflight are known to weaken the human immune system • Certain microbes can attack Image Credit: USDA the materials and hardware of the Station
  9. 9. What is NASA Doing to Eliminate Harmful Microbes in Space? • Testing each crewmate for infection before launch • Only healthy crew members are allowed to fly in space
  10. 10. What About the Water and Air? • Air, water and surfaces with which crew members interact must be kept clean • All air in the space station will pass through filters-High Efficiency Particle Air (HEPA) filters • Water will be disinfected by a machine called a Catalytic Oxidator
  11. 11. Protecting Space Station Materials • Some harmful microbes can thrive on the Space Station • Eventually, they could eat away at the Space Station material Image Credit: NASA
  12. 12. Protection of the Space Station Materials • Humidity of the air will be kept low • Astronauts will clean materials • Paint with a fungus-killing chemical will be used Image Credit: NASA
  13. 13. How can we control microbial growth here on Earth?
  14. 14. NASA Spin-offs • Dozens of NASA Spin-offs have improved our lives here on Earth • In order to prevent bacterial contamination in space, NASA hired Pillsbury to develop a preventative food safety program • Pillsbury developed the Hazard Analysis and Critical Control Point (HACCP) program
  15. 15. HACCP • HACCP is designed to prevent food safety problems rather than catch then after they occur • It includes seven principles • It was adopted by the FDA in the1990’s
  16. 16. HACCP’s Seven Principles for Food Safety 1. Analyze Hazards 2. Identify Critical Control Points
  17. 17. Principles 3 & 4 1. Establish Critical Limits for each Critical Control Point 2. Establish Monitoring Procedures
  18. 18. Principles 5, 6 & 7 1. Establish Corrective Actions 2. Establish Verification Activities 3. Establish Records and Documentation
  19. 19. What are some ways your could implement HACCP Principles in your home kitchen?