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The E ffect of Microgravity on the Growth and pH of L actobacillus acidophilus

The E ffect of Microgravity on the Growth and pH of L actobacillus acidophilus . Presidio High School . Teacher Facilitator: Melody Crowder Principal Investigator: Illiana Fernandez Co-Principal Investigator- Alvaro Ali Romero Collaborator- Rafael Sanchez. Lactobacillus acidophilus.

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The E ffect of Microgravity on the Growth and pH of L actobacillus acidophilus

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  1. The Effect of Microgravity on the Growth and pH of Lactobacillus acidophilus Presidio High School Teacher Facilitator: Melody Crowder Principal Investigator: Illiana Fernandez Co-Principal Investigator- Alvaro Ali Romero Collaborator- Rafael Sanchez

  2. Lactobacillus acidophilus • Grows in 5.0-7.0 pH • Reproduces rapidly • Naturally found in the human intestines

  3. Hypothesis Objective • The growth rate will slow down and the pH will increase. • Test the effects of microgravity on the growth rate and pH of Lactobacillus acidophilus bacteria. • Determine if astronauts should be given supplemental probiotics Purpose

  4. Procedure • Main Volume: Distilled Water • Ampoule A: powdered lactobacillus acidophilus and powdered milk. • Ampoule B: Formalin • The L. acidophilus will be rehydrated in the same time frame in microgravity as our ground truth experiment.

  5. Procedure Bacteria will be counted and compared to the ground truth experiment.

  6. Limitations • Remote location of Presidio ISD • Size of FMEcan not store enough nutrients for 90 days MEXICO

  7. Real World Applications • Give supplemental probiotics to astronauts • Aid in production of Vitamin K • Improve digestion and overall health • Supports a healthy immune system

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