Vol. 12, Issue 10 (2023)

Author(s):
Prashant Said, Shagolshem Mukta Singh, Naorem Nirmala Devi and Geetanjalli Samjetsabam

Abstract:
The physical properties of black turmeric are required for the development of post-harvest equipment and well as to standardize thermal processing of turmeric i.e., boiling, drying, etc. Thus, physical properties or geometric properties namely, the axial dimensions, shape, surface area, sphericity, bulk density, true density and porosity; frictional properties namely, coefficient of friction and angle of repose were determined along with textural properties like cutting strength. The average length, width and thickness of rhizomes were 52.68 mm, 38.85 mm and 31.98mm, respectively. The average value of surface area, sphericity of the rhizomes, bulk density, true density and porosity were 5143.99mm², 0.48, 693.67 kg/m³, 996.68 kg/m³ and 30.40%, respectively. The angle of repose obtained was 44.05^o while the co-efficient of frictions for the black turmeric on steel, plywood, mild steel and glass surfaces were found as 0.5241, 0.6145, 0.6336 and 0.7015, respectively. The average cutting strength of the rhizome was 12.78 kgF.