Bioactive compounds and antioxidant properties of four Hedychium flowers for flavoured tea
2018; International Society for Horticultural Science; Issue: 1194 Linguagem: Inglês
10.17660/actahortic.2018.1194.150
ISSN2406-6168
AutoresRatchuporn Suksathan, Ratchadawan Puangpradab, N. Saratan, D. Boonvun,
Tópico(s)Essential Oils and Antimicrobial Activity
ResumoDried flowers of Hedychium coronarium (HC), H. flavescens (HF), H. neocarneum (HN) and H. speciosum (HS) were extracted by water and ethanol. The percentage yield of water extracts and ethanol extracts ranged from 21.16-28.24 and 9.39-14.14%, respectively. Alkaloids, anthocyanins, flavonoids, polyphenols, saponins, steroids, tannins and terpenoids were identified by phytochemical screening assays in the extracts. Antioxidant properties were evaluated in all samples. Ethanol extracts showed better antioxidant capacity in the DPPH assay (IC50 0.46-0.61 ppm), total phenolic content (18.73-54.31 mg GAE g-1 extract) and ABTS (30.87-81.74 mg Trolox g-1 extract) than water extracts in most samples tested. These results were the preliminary screening study of Hedychium flowers for the development of flavoured tea and non-caffeine herbal tea. Hedychium flowers could be used as antioxidant ingredients rich in bioactive compounds such as flavonoids, terpenoids and tannin, in the beverage industry.
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