“…Concentrations of some volatile substances decreased with the prolonged storage period, such as 2-phenylethanol, hexanal, butanone, butanal, 2-pentanone, 2,3-butanedione, α-pinene, 2-propanone, 2,3-pentanedione and ethylpropanoate. This indicated that lipid oxidation and carbonyl reaction might promote the volatilisation of some flavour compounds (Herianto et al, 2022). However, some volatile substances in powders increased with the prolonged storage periods, such as pentanol, pentanal, 2-octanone, 2-heptanone, isoamyl acetate, linalool, 1-hexanol, 1,8-cineole and cis-3-hexenol, indicating that alcohols were the main products of fat oxidation and their flavor threshold was higher than aldehydes.…”