The results obtained from the FT-NIR analysis for reflectance and
transmission modes of treatments are shown in Fig. 4a and b. The
bands around 8454 and 5623 cm1 are caused by the sugars and
bands around 10,244 cm1 can be attributed to water content (Di
Egidio et al., 2009). At the beginning of the storage, absorption
spectrum showed high absorbance for sugar and water content due
to freshness quality, as expected. Increased storage time resulted in
decrease of absorption bands for all treatments. At the end of the
storage, absorption peaks around 8454 cm1 dropped significantly
for CNT and 90 W when compared with other treatments. Correlation
was found between these results and TSS values. The lowest
peaks were observed around 10,244 cm1 for CNT and 90 W
treatments due to the high respiration rate and metabolic activity
of CNT group and destructive effect of high power ultrasound on
cell wall and cellecell adhesion which results with greater loss of
water.