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@article{142521,
        author = {R.M.N.A.Wijewardana and S.B.Nawarathne and I.Wickramasinghe},
        title = {Evaluation of Physicochemical and Antioxidant Property of Dehydrated Hibiscus (Hibiscus rosa-sinensis) Flower Petals and Its Stability in Product Preparation},
        journal = {International Journal of Innovative Research in Technology},
        year = {},
        volume = {2},
        number = {2},
        pages = {179-185},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=142521},
        abstract = {The study was conducted to analyze the physico-chemical and antioxidant property of fresh and dehydrated Hibiscus powder petals and its stability in product preparation. The proximate analysis of fresh hibiscus flower petals showed the moisture 89.34%, fat 2.76%, protein 4.12%, total ash 7.23%, fiber 10.75% and anthocyanin content 877.04 mg/100g.  Different drying methods were evaluated such as sun drying, solar drying, drying after freezing (Freeze for one hour followed by drying mechanical drying at 55°C), vacuum drying (50°C) and drying using lab scale air oven (55°C)  on physiochemical and retention of antioxidants in powder of dehydrated hibiscus flower petals. Higher concentration of protein (4.05) and anthocyanin (107.5 mg/100g) were recorded in vacuum dried sample and it significantly different (α= 0.05) from other treatments. The data on change in physico chemical characteristics of different treatments (jelly powder mix) upon storage of 60 days; the lower moisture content (4.031%)  and fat content (0.31%) was recorded by T4 at the end of storage. It was given a significant loss of anthocyanin content during storage and the highest composition was given by T3 (10.47 mg/100g). The colour intensity (L* value) indicated that the product was brighter in appearance and the maximum was recorded by T1 followed by T2 and the higher a* value was recorded by T4 followed by T2. A slight reduction of DPPH radical scavenging activity was observed among dry powder mix vs. the prepared product and it depends upon the composition of hibiscus powder incorporated.},
        keywords = {dehydration, Antioxidant activity, proximate compositions, hibiscus powder, storage, jelly},
        month = {},
        }