Vol. 18 No. 1
Proximate and in-vitro bioactivity analysis of fruit tea infusions prepared with locally available fruits of Manipur, India
Author(s): Y. Prabhabati Devi, P. Kshetri, I. Bhupenchandra, N. G. Piloo, H. N. Singh, A. K. Devi, R. Khangembam, P. Langamba, T. S. Singh, S. S. Roy and Y. J. Devi
Abstract: Two different fruit tea infusions (dragon tea and roselle-pineapple tea) were formulated using various locally available fruits and analyzed the proximate, phenolic, flavonoid content and antioxidant activities. Further, the fruit teas were evaluated for sensory quality for consumer acceptance. Both the tea infusions contained a high amount of total phenolic content corresponding to 368.9±0.07 mg GAE 100g-1 (Gallic acid equivalent 100g-1 sample) in dragon fruit and 664.9±0.31 mg GAE 100g-1 in rosellepineapple fruit tea, while flavonoid content of dragon fruit and roselle-pineapple tea was recorded as 111.0 ±0.14 mg QE 100g-1 (Quercetin Equivalent per 100g sample) and 232.2±0.12 mg QE 100g-1 respectively. Higher antioxidant activity was shown by roselle-pineapple (460.0±0.2mg ascorbic acid Equivalent per 100 g sample) as compared to dragon fruit (129.7±0.07mg Ascorbic acid Equivalent per 100 g sample). Both the fruit tea infusions also contained high vitamin C content. Moreover, the present fruit tea infusions have shown high sensory quality. Time of infusion is directly correlated with sensory quality.