Editing Yeast
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'''Measuring YAN'''<br/> | '''Measuring YAN'''<br/> | ||
See [[YAN testing]] | See [[YAN testing]] | ||
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*https://vtechworks.lib.vt.edu/bitstream/handle/10919/49450/325.full.pdf?sequence=1 | |||
*https://www.apps.fst.vt.edu/extension/enology/EN/133.html | |||
*https://www.winemakingtalk.com/conversations/yan-testing.123471/ | |||
*https://www.winemakingtalk.com/threads/yan-calculations.73007/ | |||
The Formol titration has the advantage of measuring both ammonia and FAN amino acids. However, the method over-titrates proline (which yeast cannot use) and under-titrates arginine, which the yeast do use. Our research suggested that this generally balances out [in wine].<ref name="Zoecklein">https://www.apps.fst.vt.edu/extension/enology/EN/133.html</ref> | |||
'''YAN Target'''<br/> | '''YAN Target'''<br/> |