In vitro and vivo antioxidant activities of daylily flowers and the involvement of phenolic compounds. (1/5)
Daylily (Hemerocallis fulva Linn.) flowers were hot air-dried and freeze-dried after harvest. Antioxidant properties of water and ethanol extracts prepared from these dried flowers were evaluated in terms of total antioxidant activity, reducing capacity, and metal chelating activity. Extracts from daylily flowers exhibited strong antioxidant activity. Ethanol was more efficiency to extract antioxidants than water, and freeze-drying preserved higher activities than air-drying. Rutin, (+)-catechin, and gallic acid were identified in the extracts by HPLC, and were highly related to the antioxidant activities. The antioxidant activity was further evaluated by feeding mice with ethanol extract from freeze-dried daylily flowers for 60 days. The results demonstrated that the extract at dosage of 40-225 mg/100 g significantly increased the activity of SOD (superoxide dismutase) and reduced the lipid peroxidation in both blood and liver of rat. (+info)N-glycosides of amino acid amides from Hemerocallis fulva var. sempervirens. (2/5)
As part of our search for sedative substances from natural sources, we isolated two novel amino acid amides connected with the fructopyranose, kwansonine A (1) and kwansonine B (2), together with three known amino acid amides, longitubanine A (3), longitubanine B (4), and pinnatanine (5), from Hemerocallis fulva L. var. sempervirens (ARAKI) M. HOTTA. The structures of 1 and 2 have been determined on the spectroscopic evidences as N(2)-(1-beta-D-fructopyranosyl)-N(5)-(2',5'-dihydro-2'-furyl-3'-hydroxymethyl)-ga mma-hydroxyglutamine and N(2)-(1-beta-D-fructopyranosyl)-N(5)-(2-hydroxymethylbutadienyl)-gamma-hydroxyglu tamine. This is the first report on the isolation of amino acid amide N-furctoside from Hemerocallis genus plant. (+info)Effect of light exposure on in vitro germination and germ tube growth of eight species of rust fungi. (3/5)
(+info)Effect of light on in vivo urediniospore germination, lesion development and sporulation of Puccinia hemerocallidis on daylily and Puccinia pelargoniizonalis on geranium. (4/5)
(+info)Relative role of flower color and scent on pollinator attraction: experimental tests using F1 and F2 hybrids of daylily and nightlily. (5/5)
(+info)Hemerocallis is not a medical term, but a botanical name for a genus of perennial herbaceous plants commonly known as Daylilies, which have been used in traditional medicine for various purposes, such as treating digestive disorders and skin conditions, but their clinical efficacy and safety have not been well-established in modern medical research.
I'm sorry for any confusion, but "Hemerocallis" is not a medical term. It is actually the botanical name for a group of plants commonly known as Daylilies. These are perennial plants with funnel-shaped flowers that typically last for only one day. They are popular ornamental plants in gardens. If you have any questions about medical terminology, I'd be happy to help!