Abstract:
The rheological properties of mango puree was examined with the effect of temperature and concentration. The shear rate and shear stress were measured with viscometer, whereas the flow property was measured with bostwick consistometer. Mango puree was prepared and set to three concentration levels, i.e., 15 °Brix, 17 °Brix and 19°Brix. Each concentration was set in four temperature levels, i.e. 25 °C, 40 °C, 50 °C and 60 °C. The results show that mango puree has the rheological property as pseudoplastic fluid with the flow behavior index in the range from 0.3121 to 0.6446. The apparent viscosity was 0.3741 to 0.8790 Pa.s at shear rate at 22.40 per second. When mango puree was processed to mango fruit leather and adding safflower in product, the antioxidant property and total phenolic content were examined. The amount of adding safflower in 1000 gm of puree was 0.5%, 1% and 2%. The total phenolic content and antioxidant capacity were found as 385.35 mgGA/100gm and 205.94 mgTE/100 gm respectively, with 2% safflower adding sample. The textural property such as springiness and cohesiveness of those products were not much changed during one month storage but the antioxidant capacity (DPPH) as well as total phenolic content were decreased in very sample.