Loading...
Please wait, while we are loading the content...
Changes in antioxidant activity inRosa rugosaflowers at different stages of development
| Content Provider | Scilit |
|---|---|
| Author | Youwei, Z. Yonghong, P. |
| Copyright Year | 2007 |
| Description | Free radical scavenging activities (FRSA) of the crude aqueous extracts from Rosa rugosa fresh flowers at different developmental stages on l, l‐diphenyl‐2‐picrylhydrazyl (DPPH), superoxide and hydroxyl free radicals, and their polyphenolic concentration, were investigated. FRSA ranged from 73.5% to 40.2% for DPPH, from 32.2% to 14.3% for hydroxyl, and from 84.6% to 78.0% for superoxide. The polyphenolic concentration varied from 19.8 to 6.9 mg catechin equivalents (CE)/g fresh weight (FW). There was a reduction in FRSA for DPPH and hydroxyl, as well as polyphenolic concentration. The decrease in polyphenolic concentration was positively correlated with declines in free radical scavenging of DPPH (r$ ^{2}$ = 0.961, P < 0.01) and hydroxyl free radicals (r$ ^{2}$ = 0.993, P < 0.01). These results demonstrated a close link between rose development, polyphenolic concentration, and antioxidant activity with stage 1 exhibiting the best polyphenolic concentration and free radical scavenging potential. |
| Related Links | http://www.tandfonline.com/doi/pdf/10.1080/01140670709510207?needAccess=true |
| Ending Page | 401 |
| Page Count | 5 |
| Starting Page | 397 |
| ISSN | 01140671 |
| e-ISSN | 11758783 |
| DOI | 10.1080/01140670709510207 |
| Journal | New Zealand Journal of Crop and Horticultural Science |
| Issue Number | 4 |
| Volume Number | 35 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2007-12-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: New Zealand Journal of Crop and Horticultural Science Horticulture Rosa Rugosa Free Radical Scavenging Activity Developmental Stage Polyphenolic Concentration |
| Content Type | Text |
| Resource Type | Article |
| Subject | Horticulture Agronomy and Crop Science |
