| In vitro: |
| Food Chem Toxicol. 2012 Feb;50(2):409-14. | | In vitro evaluation of tectoridin, tectorigenin and tectorigenin sodium sulfonate on antioxidant properties.[Pubmed: 22079309 ] | Tectoridin (4',5,7-thrihydroxy-6-methoxyisoflavone-7-O-β-d-glucopyranoside) isolated from the flowers of Pueraria thunbergiana is reported to have less hepatoprotective, hypoglycemic, antiallergic and anaphylaxis inhibitory activity than its aglycone form tectorigenin.
METHODS AND RESULTS:
To obtain tectorigenin, tectoridin was hydrolyzed in the current study. However, practical limitations of tectorigenin do exist due to its poor water-solubility. To increase its water-solubility, tectorigenin was sulfonated with sulfuric acid (98wt.%) and mixed with saturated salt water to produce Tectorigenin sodium sulfonate. Tectoridin and the two transfer products were identified by UV, IR, HPLC-MS, (1)H NMR and (13)C NMR, and the solubility of Tectorigenin sodium sulfonate was increased about 9-fold than tectorigenin. Antioxidant experiments of tectoridin, tectorigenin and modified tectorigenin in vitro including reducing power, superoxide anion radical scavenging activity, hydroxyl radical scavenging activity, 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging activity and anti-lipid peroxidation were carried on comparing with ascorbic acid (Vc) or butylated hydroxytoluene (BHT).
CONCLUSIONS:
The results suggested that the antioxidant activity in all the experimental systems exhibited the same order as follows: Tectorigenin sodium sulfonate>tectorigenin>tectoridin. Due to the high water-solubility and good antioxidant properties with Tectorigenin sodium sulfonate, appropriate chemical modifications could greatly improve the biological activities of the naturally occurring products. |
|
Cell. 2018 Jan 11;172(1-2):249-261.e12. doi: 10.1016/j.cell.2017.12.019.IF=36.216(2019)
Cell Metab. 2020 Mar 3;31(3):534-548.e5. doi: 10.1016/j.cmet.2020.01.002.IF=22.415(2019)
Mol Cell. 2017 Nov 16;68(4):673-685.e6. doi: 10.1016/j.molcel.2017.10.022.IF=14.548(2019)
ACS Nano. 2018 Apr 24;12(4): 3385-3396. doi: 10.1021/acsnano.7b08969.IF=13.903(2019)
Nature Plants. 2016 Dec 22;3: 16206. doi: 10.1038/nplants.2016.205.IF=13.297(2019)
Sci Adv. 2018 Oct 24;4(10): eaat6994. doi: 10.1126/sciadv.aat6994.IF=12.804(2019)
