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Catechins and other phenolic compounds in herb of eight < em > Ephedra < /em > species in comparison to < em > Camellia sinensis < /em >
Nat Prod Res. 2022 Nov 23:1-6. doi: 10.1080/14786419.2022.2149517. Online ahead of print.ABSTRACTUsing HPLC-DAD the presence of catechin, epicatechin, quercetin, kaempferol and protocatehuic acid was analysed in herb extracts of eight Ephedra species (Ephedra sinica, Ephedra major, Ephedra chilensis, Ephedra ciliata, Ephedra foeminea, Ephedra equisetina, Ephedra gerardiana and Ephedra distachya). For comparison purposes, the same phenolics were determined in Camellia sinensis herb, which is a common source of catechins and a medicinal plant with valuable antioxidant properties. The catechin content in Ephedra spp. ranged b...
Source: Natural Product Research - November 23, 2022 Category: Biochemistry Authors: Nudjejma Osmic Dusan Culum Saida Ibragic Source Type: research

Molecules, Vol. 27, Pages 7761: Ultrasensitive Determination of Natural Flavonoid Rutin Using an Electrochemical Sensor Based on Metal-Organic Framework CAU & minus;1/Acidified Carbon Nanotubes Composites
In this study, a new electrochemical rutin sensor was developed using multiwalled carbon nanotubes/aluminum-based metal&ndash;organic frameworks (MWCNT/CAU-1) (CAU&minus;1, a type of Al-MOF) as the electrode modification material. The suspension of multiwalled carbon tubes was dropped on the surface of the GCE electrode to make MWCNT/GCEs, and CAU&minus;1 was then attached to the electrode surface by electrodeposition. MWCNTs and CAU&minus;1 were characterized using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Due to the synergistic effect of CAU&min...
Source: Molecules - November 11, 2022 Category: Chemistry Authors: Yuhong Li Jianxiong Tang Yueli Lin Jiejun Li Yaqi Yang Pengcheng Zhao Junjie Fei Yixi Xie Tags: Article Source Type: research

Higher Habitual Dietary Flavonoid Intake Associates With Less Extensive Abdominal Aortic Calcification in a Cohort of Older Women
CONCLUSIONS: In older women, greater habitual dietary flavonoid intake associates with less extensive AAC.PMID:36325901 | DOI:10.1161/ATVBAHA.122.318408 (Source: Arteriosclerosis, Thrombosis and Vascular Biology)
Source: Arteriosclerosis, Thrombosis and Vascular Biology - November 3, 2022 Category: Cardiology Authors: Benjamin H Parmenter Catherine P Bondonno Kevin Murray John T Schousboe Kevin Croft Richard L Prince Jonathan M Hodgson Nicola P Bondonno Joshua R Lewis Source Type: research