Retronasal flavor is sensation referral via mouth. Retronasal is not only volatile substances, but airborne containing particles, liquid drop. Retronasal substances could be recognized after swallowing.
GC-MS-O filters many interesting flavoring substances for retronasal sensation during sample preparation. Orthonasal olfaction could not reflect the performance of flavoring substances by swallowing.
It is time to invent new instrument to identify retronasal substances.
Malin Sandström
It is good for picking out the profile of a particular flavour, identification is trickier
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Jingang Shi
Malin Sandström Yes, it could. However, it is a kind of orthonasal flavor. Not really function to food and beverage, for which retronasal is more important.
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