Wednesday, June 18, 2014

Asparagine extracted from lupines

Asparagine is a very common natural amino acid and can be found in asparagus, legumes, nuts, or soy. After an old method (described by Molisch 1913: Die Mikrochemie der Pflanze) it can be extracted with alcohol from lupines that are germinated in darkness. 

lupine close up photo
Lupine
The results of the test can be seen on the photos. After drying some colorless crystals where formed from the alcohol extract. Under the microscope and in polarized light, they are very colorful and have a high birefringence.

Asparagine under the microscope (magnification 40x and polarized light).
Asparagine under the microscope (magnification 80x and polarized light).

Asparagine
Asparagine under the microscope (magnification 200x and polarized light).

Asparagine crystals
Asparagine under the microscope (magnification 80x and polarized light).

3 comments:

  1. OMG; scientific post. I've never heard of Asparagine which is contained i asparagus etc. But for the pictures, they look beautiful, aren't they ;-)

    Sending you lots of Love and Hugs from Japan, xoxo Miyako*

    ReplyDelete

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