Question 2: No flavor analysis was done! Only headspace analysis. They are very different.
Thanks for your helpful comments. In the revised version of page 16, ”3.5 Determination of flavor”, the flavor analysis was carried out by headspace sampling using Flavour Spec®, Gesellschaft für Analytische Sensor systemembH, Dortmund, Germany. The flavor analysis was performed by headspace injection using Flavour Spec®, Gesellschaft für Analytische Sensor systemembH, Dortmund, Germany. To avoid misunderstanding, the term ”headspace vial” has been replaced with ”headspace sample vial” throughout the text.