Topic
Dioscorea
About: Dioscorea is a research topic. Over the lifetime, 932 publications have been published within this topic receiving 9861 citations. The topic is also known as: Yam.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: In this paper, three varieties of yams, Dioscorea alata (cultivars of Tai-Nung no. 2 and Ta-Shan) and D. purpurea (cultivation of Ming-Chien), were made into flours by freeze-drying, hot air-dried, and drumdrying.
572 citations
TL;DR: All exhibit biological activities which could contribute to resistance to pests, pathogens or abiotic stresses, indicating that they may have dual roles in the tubers.
309 citations
TL;DR: It is suggested that 32 kDa dioscorin, the storage protein of yam tuber, may play a role as antioxidant in tubers and may be beneficial for health when people take it as a food additive or consume yam tubers.
Abstract: Dioscorin, the storage protein of yam (Dioscorea batatas Decne) tuber (which is different from dioscorine found in tubers of Dioscorea hirsuta), was purified to homogeneity after DE-52 ion exchange column according to the methods of Hou et al. (J. Agric. Food Chem. 1999, 47, 2168−2172). A single band of 32 kDa dioscorin was obtained on a sodium dodecyl sulfate−polyacrylamide gel electrophoresis gel with 2-mercaptoethanol treatment. This purified dioscorin was shown by spectrophotometric method to have scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical in a pH-dependent manner. There is a positive correlation between scavenging effects against DPPH (8−46%) and amounts of 32 kDa dioscorin (5.97−47.80 nmol) added in Tris-HCl buffer (pH 7.9), which are comparable to those of glutathione at the same concentrations. Using electron paramagnetic resonance (EPR) spectrometry for DPPH radical detection, it was found that the intensities of the EPR signal were decreased by 28.6 and 57 nmol of 3...
198 citations
TL;DR: This review will summarize some of the important reports on the chemistry and the biological activities of Dioscorea steroid saponins from the literature data of recent years and from the authors’ studies.
Abstract: This review will summarize some of the important reports on the chemistry and the biological activities of Dioscorea steroid saponins from the literature data of recent years (2000–2006) and from the authors’ studies. These discoveries became possible as a result of the scientific development of isolation, structure elucidation, and the development of in vitro bioassays. Over 50 steroid saponins of furostane-, spirostane-, and pregnane-type skeleton have been discovered and characterized from 13 Dioscorea species, namely, D. bulbifera L., D. cayenensis Lam.-Holl, D. colletii Hook. F. var. hypoglauca (Palib.) Pei et Ting, D. deltoidea Wall var. orbiculata, D. futschauensis R. Kunth, D. nipponica Mak., D. panthaica Prain et Burkill, D. parviflora Ting, D. polygonoides Humb. et Bonpl., D. pseudojaponica Yamamoto, D. spongiosa Xi, Mizuno et Zhao, D. villosa L., D. zingiberensis Wright. The main biological and pharmacological properties of Dioscorea saponins concern cytotoxic and antifungal activity, which are highlighted.
186 citations
TL;DR: In this article, four wild yam species: Dioscorea bulbifera, D versicolor, D deltoidea and D triphylla were studied and the dry matter ranged from 198 to 305% on a fresh weight basis.
172 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 67 |
| 2024 | 161 |
| 2023 | 95 |
| 2022 | 172 |
| 2021 | 31 |
| 2020 | 61 |