The objective of this study was to obtain and characterize a freeze-dried powder taioba leaves (Xanthosoma taioba) as source bioactive substances potential food applications. fresh were cooked lyophilized for further analysis. Its contents expressed in flavonoids, ascorbic acid total polyphenols quantified. Total antioxidant activity (TAA) determined by ABTS assays. chemical composition via inf...

The aim of this experiment was to investigate the beneficial effect monensin, tannic acid and cinnamon essential oil addition on sesame meal degradability by three-step in vitro method. experimental additives rumen, after rumen whole gastrointestinal tract significant (P<0.05). ruminal intestinal digestibility crude protein with range 76 84% 49 60%, respectively. increased (about 10%). Addit...

The ability of Cystoseira baccata algal biomass to remove Hg(II) from aqueous solutions is investigated. The mercury biosorption process is studied through batch experiments at 25 degrees C with regard to the influence of contact time, initial mercury concentration, solution pH, salinity and presence of several divalent cations. The acid-base properties of the alga are also studied, since they ...

Ascorbic acid, phenolic compounds and carotenoids were extracted from acerola (Malpighia emarginata DC.) by-products using gas-expanded liquids (GXLs) based on carbon dioxide expanded ethanol at 40 °C 7 MPa. The generated in the processing of acerola: bagasse (seed peel) non-pomace (from juice clarification step), studied separately. overall extraction yields obtained 3.8 12.9 g/100 g for non-p...

This paper describes a preliminary assessment of the nutraceutical value of Amaranthus cruentus (A. cruentus) and Amaranthus hybridus (A. hybridus), two food plant species found in Burkina Faso. Hydroacetonic (HAE), methanolic (ME), and aqueous extracts (AE) from the aerial parts were screened for in vitro antioxidant and xanthine oxidase inhibitory activities. Phytochemical analyses revealed t...

The interaction between silver nanoparticles and herpesviruses is attracting great interest due to their antiviral activity and possibility to use as microbicides for oral and anogenital herpes. In this work, we demonstrate that tannic acid modified silver nanoparticles sized 13 nm, 33 nm and 46 nm are capable of reducing HSV-2 infectivity both in vitro and in vivo. The antiviral activity of ta...

BACKGROUND Many oxidative stress related diseases are as a result of accumulation of free radicals in the body. A lot of researches are going on worldwide directed towards finding natural antioxidants of plants origins. The aims of this study were to evaluate in vitro antioxidant activities and to screen for phytochemical constituents of Helichrysum longifolium DC. [Family Asteraceae] aqueous c...

In this paper, the phenolics content and the antioxidant activity of the ethanol extracts prepared from the leaves of Globularia alypum L were evaluated. These extracts were obtained by two different extraction methods. The composition of polyphenols (198±0.52μg gallic acid equivalent/mg of dry mass) and tannins (30.65±0.11μg tannic acid equivalent/mg of dry mass) was higher in the ethanol extr...

Các yếu tố môi trường và thời gian sinh trưởng có tác động rất lớn đến hàm lượng các chất trong cây. Việc khảo sát ảnh hưởng của điều kiện địa lý lên một số hợp cây đinh lăng (Polyscias sp.) sự đa dạng di truyền đã được thực hiện tại Trường Đại học Cần Thơ từ tháng 01/2019 12/2020. Kết quả cho thấy, loại mẫu lăng. Trong đó, 5 năm tuổi tannic acid, quercetine, veratrine thiamine (lần lượt là 88,...

Laboratory experiments were carried out to investigate wastewater organics as the precursors of disinfection byproducts (DBPs) in drinking water supply. The focus was on the change in wastewater DBP precursors during biological degradation under simulated natural conditions. The wastewater and its treated secondary effluent were characterized for DBP formation potential (DBPFP) and DBP speciati...