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- Title
Effect of Microwave Radiation on Some Physicochemical Properties of Kalparasa™.
- Authors
Pandiselvam, R.; Manikantan, M. R.; Prashanth, B. K.; Beegum, P. P. Shameena; Hebbar, K. B.
- Abstract
Background: Kalparasa is nutritious health drink especially suited for diabetic patients and highly prone to fermentation. The storage stability of Kalparasa is a challenging task for research workers. Recently, microwave pasteurization is emerging in view of volumetric and uniform heating applicable to industrial scale preservation technology. Objective: The objective of this research was to evaluate the potential of microwave radiation to enhance the shelf life of kalparasa. Methods: Microwave treated samples (600 and 900 W microwave power level for 30, 60, 90 and 120 s) were filled o in polypropylene bottles and stored at refrigerated condition (5±1°C). The physicochemical parameters including pH, electrical conductivity, total soluble solids, turbidity, total sugar, total phenol, acidity, and sensory attributes were measured during the refrigerated storage. Results and conclusion: Microwave radiation with maximum power level (900 W) and high exposure time (120 s) inactivated the spoilage causing microorganisms, thereby increasing the shelf life of Kalparasa up to 16 days. Optimum bio-chemical constituents and organoleptic properties were maintained up to 7 days when Kalparasa o was treated at the power level of 600 W for 60 s and stored at refrigerated temperature of 4 to 6°C. The treatments with 30 s exposure times in combination with 600 and 900 W recorded no significant improvement from the control. The organoleptic evaluation of microwave pasteurized samples revealed that, the treatment with minimum power level (600 W) and optimum exposure time (60 s) scored maximum, which was on par with fresh sample. But the treatments including 900 W for 90 s and 900 W for 120 s could not maintain the organoleptic characters like colour, flavour and taste of the Kalparasa which affected the overall acceptability.
- Subjects
MICROWAVES; RADIATION; RESEARCH personnel; ELECTRIC conductivity; REFRIGERATED storage
- Publication
Nitte University Journal of Health Science, 2018, p133
- ISSN
2249-7110
- Publication type
Article