Hello again everyone!
While most of my work has been on measuring hormones and metabolites from blood, or recording behaviors, I decided to try my hand at something new. I wanted to see if I could measure the contents of a lizard egg!
As eggs can vary widely in the volume of water they contain, the first thing I had to do was dry the egg. Because I wanted to measure proteins and lipids, I wasn’t able to heat the egg up though, so instead I used a freeze-dryer. Once dried, I carefully removed the shell (because shells are reaaaaally hard to grind) and then homogenized the yolk sample.
Once the yolk was ground up, I needed a way to extract the proteins and lipids from the yolk. To do so, I weighed out a specific amount of the egg, added some dangerous chemicals, and then filtered that solution through an incredibly tiny filter. The size of a the holes in a coffee filter are 20 microns, while the size of a bacteria is 0.6 microns. This filter had holes that were 0.2 microns!
After filtering the solution, I could then try to measure the amount of proteins and lipids. To do so, I added a tiny drop of the solution to a piece of quick dry paper.
Once the paper completely dried, I was able to shine a light through it and get an absorbance value.
Stay tuned for the results of what I found!