Nondestructive Method of Determining Acetic Acid Spoilage in an Unopened Bottle of Wine

摘要

Nuclear magnetic resonance (NMR) spectroscopy was used to monitor acetic acid levels in intact wine bottles. An NMR probe and a spectrometer capable of examining full intact wine bottles are described and used to reliably measure the acetic acid content in wine down to 0.5g/L, more than half the accepted limit in normal wine.