Fully ripened fruit were peeled manually using a stainless steel knife and the flesh portions were pulped using a mixer grinder (Sumeet, India). Biochemical analyses of fresh papaya pulp such as acidity, pH, total soluble solids (TSS), total sugars, ascorbic acid and β-carotene contents were carried out to evaluate their relative loss during foam mat drying as per the method described by Ranganna [29].