Nonthermal pasteurization of tender coconut water using a continuous flow coiled UV reactor

摘要: Abstract A non-thermal pasteurization technology is desirable to naturally preserve nutrient and organoleptic properties of packaged tender coconut water (TCW) distributed under refrigeration. The goal this research was assess the antimicrobial effectiveness ultraviolet light C (UVC) as a TCW. dean flow reactor used with wavelength 254 nm at residence time 14.0 s. experimental variables were three Reynold numbers (R e  = 198.8, 397.7 596.4) two diameters transparent PFA tubes (3.2 mm 1.6 mm). TCW inoculated cultures Escherichia coli W1485 Listeria monocytogenes separately before passing through UV reactor. UVC treatment yielded 5.27 4.74 log 10  CFU/mL E. coli count reductions for 1.6 mm 3.2 mm ID reactors, respectively, whereas reduction 4.18 2.96  CFU/mL, respectively at Re = 596.4. Furthermore, number increased, microbial also increased. physico-chemical changes cold pasteurized not significantly different compared fresh