Simple Tree Extracts

Preparing leaf and bark extracts from local trees.

By Tracy Vassiliev, James F. Doughty School, Grade 8 Physical Science

Make different leaf and bark extracts from local species of trees.

Testing the antimicrobial effects of tree & plant extracts

By Patricia Bernhardt, James F. Doughty School Grade 7 Life Science

This lab will test the antimicrobial power of certain plant derived compounds.  You will need to make tree extracts, and nutrient agar.  The lab will use the extracts as well as some every day plant materials like lemon juice to see how well they prevent bacterial growth.

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