For inactivating the surface microflora of strawberries, samples at
22±1
◦
C were washed in NaOCl solution containing 250 ppm total
chlorine prepared by diluting commercial bleach solution (approximately 6% [w/w] NaOCl) with DW, with a fruit-to-aqueous chlorine
ratio of approximately 1:3 by weight for 30 s. The fruit samples were
rinsed with DW for 1 min twice to remove the residual chlorine.
Chlorine was not detected in water of the 2nd rinsing when measured with the chlorine test kit (limit of detection was 0.02 ppm).