Increase in soluble protein of wine

This week we tested for soluble protein in the wine using a spectrophotometer. On the left of this image, you see the wine sample taken the first day the cask was put on board. The right tube, shows a wine sample taken last week. Note the visual differences! Barrel-aging wine is a method to clarify wine, so this is a possible explanation for the differences, but we'll need to do more tests to find out.
Wine Sample (08-19-17) | Wine Sample (09-19-17) |
Protein: 0.19603 mg/mL | Protein: .33267 mg/mL |
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