Tannins are natural polyphenolic compounds widely found in plants. The production of coagulants for water treatment is one their new applications. Polyphenols extraction the first step synthesizing tannin-based coagulants. Eucalyptus globulus bark (EGB), an abundant by-product pulp and paper industry, usually applied as fuel energy production, was used this work a tannin source. polyphenols fro...

Bauhinia variegata L. is traditionally used in treating a variety of ailments in India. Phytochemical screening and in vitro free radical scavenging activity of aqueous and ethanolic bark extracts of Bauhinia variegata was assessed by studying its ability to scavenge DPPH, Nitric oxide, hydroxyl radical and reducing power. Phytochemical analysis revealed the presence of steroid, phenol/ tannin,...

The aim of this study was to determine the preliminary phytochemical component and antibacterial activity of the leaves extract of Guiera senegalensis lam (Combretaceae) against three clinical isolates (Staphylococcus aureus, E. coli and Klebsiella species) using standard method of analysis. The test for phytochemical component revealed the presence of alkaloid, anthraquinolones, tannin and phl...

Medicinal plants have played a vital role in drug production. Using plant extracts directly has proved to be risk-free. In the current studies, Crude extracts of Caralluma fimbriata stem were used to investigate its antibacterial activity along with their phytochemical screening .Antibacterial assay was carried out by agar disc diffusion technique. Zones of inhibition around the bacterial colon...

Kampo formulations are traditional herbal medications used in China and Japan for many centuries to treat diarrheal diseases such as cholera. Our studies were undertaken to identify and verify by chemical synthesis the active components that inhibited cholera toxin (CT), the virulence factor secreted by Vibrio cholerae, the causative agent of cholera. The Kampo formulation, Daio-kanzo-to, inhib...

The objectives of this study were to determine phytochemical compositions, chemiluminescence antioxidant activities, and neuroprotective effects on PC12 cells for water, methanol, and 95% ethanol extracts of the air-dried fruit of Terminalia chebula Retzius. The water extract afforded the greatest yield, and total phenolic and tannin content. The methanol extract yielded the greatest total trit...

In the course of screening of plant extracts for anti-influenza viral activity, 50% aqueous methanolic extract exhibited antiviral activity against influenza virus A. Bio-assay guided fractionation of the extract led to the indication of the presence of condensed tannins as the active constituents. This was confirmed by chemical tests as well as by thin layer chromatographic comparison with kno...

background: recent investigations  have identified anthelminitic effects of many medicinal plants particularly from condensed tannin sources. in addition, gastrointestinal nematodes of ruminants have a negative effect on the farming industry worldwide. objectives: the aim of the present study was  to determine the potential anthelmintic effects of quercus robur extract on alimentary canal nemat...

The objective of this paper was to study the extraction methods of tannin constituents from Semen Cuscutae and their anti-papilloma effects. Single factor test and orthogonal design methods were used to determine the optimal extraction method; the mouse skin papilloma model induced by DMBA/croton oil was established, which was a classic two-stage carcinogenesis model being used to observe and e...