Picture of the Day: Coffee magnified


Caffeine crystals

This false-coloured scanning electron micrograph shows caffeine crystals.

Found in varying quantities in the seeds, leaves, and fruit of some plants, caffeine acts as a natural pesticide that paralyzes and kills certain insects feeding on the plant.

The main crystals of caffeine were 400-500 microns long; however, this crystal group formed on the end of the larger crystal and measures around 40 microns in length.


Credits: Annie Cavanagh and David McCarthy

Comments

  1. Raphael's Legacy says:

    Wow what a powerful image, very big thank you for sharing, sincere regards, Barry

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