Effect of concentration and hydrocolloids formation on rheological properties of gelatinized cassava starch and jackfruit seeds starch dispersions Hundekari Sagar Nagnath1, Swami Shrikant Baslingappa2* 1Department of Agricultural Process Engineering, College of Agricultural Engineering and Technology, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli, Dist Ratnagiri (Maharashtra State), India 2Department of Post-Harvest Engineering, Post-Graduate Institute of Post-harvest Technology and Management, Killa-Roha, Dist: Raigad (Maharashtra State) (Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli-Campus Roha) India *Corresponding author: swami_shrikant1975@yahoo.co.in
Online published on 29 November, 2024. Abstract Rheological properties of gelatinized cassava starch dispersions at different starch concentrations (5.0, 10.0, 15.0, 20.0, and 25.0% w/v) with hydrocolloids i.e. sorbitol and glycerol were experimentally determined using a Brookfield Viscometerat various shear rate 0.08, 0.4, 0.66, 1.6, 2.66, 3.192, 5.32, 7.98, 13.3, 15.96 and 26.6(1/s). Starch dispersions showed shearthinning behavior. All the fluid exhibited pseudoplastic nature (n<1) Herschel-Bulkley model was well fitted to the experimental data with r2 ≥ 0.986 & MSE 𢙀 134269.230. The corresponding parameters were correlated with starch concentration. Rheological properties of gelatinized jackfruit seed starch dispersions at different concentrations (5.0, 10.0, 15.0, 20.0, and 25.0% w/v) with hydrocolloids i.e. sorbitol and glycerol were experimentally determined using a Brookfield Viscometer at various shear rate 0.08, 0.4, 0.66, 1.6, 2.66, 3.192, 5.32, 7.98, 13.3, 15.96 and 26.6 (1/s). Starch dispersions showed shear-thinning behavior. All the fluid exhibited pseudoplastic nature (n<1) Herschel-Bulkley model was fitted to the experimental data with r2 ≥ 0.900 & MSE 𢙀 2.4316 × 105 and the corresponding parameters were correlated with starch concentration. Top Keywords Cassava starch, Jackfruit seeds starch, Viscosity and rheology. Top |