2.2. Treatments
For the ultrasound treatments, three replicates of 500 g strawberries were immersed in 1000 ml glass beaker which was filled with distilled water for per treatment. Metallic probe (1.9 cm diameter of generator) (Vibra Cell505, Newtown, USA) was immersed in glass beaker to create acoustic cavitations. Strawberries were treated with 20 kHz ultrasound at powers of 30 W/L, 60 W/L, and 90 W/L for 5 and 10 min. Power intensities were calculated around 10.6, 21.2 and 31.8 W/cm2 for 30 W/L, 60 W/L, and 90 W/L, respectively. Treatments and abbreviations can be summarized as follows:
1) Control: Strawberries immersed in distilled water for 5 min (CNT5M) 2) Control: Strawberries immersed in distilled water for 10 min (CNT10M) 3)