AP and APS (from Lassonde Inc., Rougemont, Montreal, Canada),
was selected as substrate for CA production. AP was already supplemented with rice husk (1%, w/w), as a common practise of
supplementing the apples with rice husk during the extraction of
juice for a better hold on the apples in the industry during meshing
and filtration. AP was completely dried at 50 ± 1
◦
C in a hot air oven
till constant weight, grounded and was passed through sieves to
get the desired particle size of 1.7–2.0 mm which was used in this
study.