The grape berries of two varieties, Yan73 (Vitis vinifera L.) and Cabernet Sauvignon (CS) (Vitis vinifera L.) were treated with 0.40 mg/L 24-epibrassinolide (EBR), 1.00 mg/L brassinazole (Brz), and deionized water (control), at the veraison period. The EBR treatment significantly increased total phenolic content (TPC), total tannin content (TTC) and total anthocyanin content (TAC) of Yan73 and ...

Preliminary investigations on 14 plant extracts (obtained by ethanolic and aqueous extraction) identified those having high antioxidant and a significant total phenolic content. Antihyperglycemic, α-amylase and α-glucosidase inhibition activities were also observed. A correlation between the antihyperglycemic activity, total phenolic content and antioxidant (DPPH scavenging) activity was establ...

The extraction of active compounds from plants is one of the most critical steps in the commercial development of natural products for medicinal and health benefits. In view of the large number of plant species potentially available for study, it is essential to have efficient systems for the rapid and efficient extraction of phytochemicals for further investigation on their properties. The pre...

Since its infestation was first discovered in Wuhan, Hubei Province, China, October 2006, Corythurcha ciliata has become an important piercing-sucking pest of Platanus occidentalis. In this paper, the content secondary plant products, nutrients, and resistance enzymes damaged leaves P. occidentalis determined, infested by different numbers adults (0 head, 1–3 heads, or >7 heads) were tested ...

The aim of this work was to utilize Red gram husk as a substrate for tannase production and optimize the Temperature and incubation period of tannase production in solid state fermentation. The maximum production of tannase was found to be 43 U/g/min at 35°C, incubated for 96 h. The tannin content in the substrate was decreased during incubation period. The tannase prepared from Aspergillus nig...

Research has been on-going on many plant materials, especially those discarded as waste, to exploit their nutritional and antinutritional properties. This is as a result of the United Nations’ millennium development goal to eradicate extreme poverty and hunger. Avocado (Persea americana Mill) seeds are often discarded after taking the pulp of the fruit. This study is aimed at evaluating the eff...

BACKGROUND Vascular smooth muscle cell (VSMC) migration is integral in the pathogenesis of atherosclerosis. Sumac (Rhus coriaria) berries are believed to have atheroprotective effects. Therefore, Sumac, which is a rich source of tannin antioxidants, was tested for its capacity to inhibit VSMC migratory activity. MATERIALS & METHODS Tannin was extracted and purified from ground Sumac. Cultured...

Condensed tannin is a ubiquitous polyphenol in plants that possesses substantial antioxidant capacity. In this study, we have investigated the polyphenol extraction recovery and 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity of the extracted polyphenol after litchi pericarp is treated with Aspergillus awamori, Aspergillus sojae or Aspergillus oryzae. We have further explored the activ...