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Potential Use of Bioactive Compounds from Waste in the pharmaceutical Industry
Published in Quan V. Vuong, Utilisation of Bioactive Compounds from Agricultural and Food Waste, 2017
One of the steps in the brewing process is filtration of beer through polyvinylpolypyrrolidone (PVPP) resin in order to stabilize the products by removing a substantial portion of the haze active and non-haze active polyphenols. These phenolic compounds can subsequently be recovered from the alkaline residual stream generated after cleaning the PVPP, by extraction with solvents (solid-phase extraction, SPE) or supercritical fluid extraction (SFE). The obtained extracts can be used as natural antioxidants for use in the pharmaceutical industry (Barbosa-Pereira et al. 2013).
Potential bio-functional properties of Citrus aurantium L. leaf: chemical composition, antiviral activity on herpes simplex virus type-1, antiproliferative effects on human lung and colon cancer cells and oxidative protection
Published in International Journal of Environmental Health Research, 2023
Houda Mejri, Wissem Aidi Wannes, Faouzia Haddada Mahjoub, Majdi Hammami, Catherine Dussault, Jean Legault, Moufida Saidani-Tounsi
Total phenolic content (TPC) was estimated using Folin-Ciocalteu colorimetric method (Dewanto et al. 2002). Results were expressed as milligrams of gallic acid equivalents per gram of dry extract (mg GAE/g DE). To determine the total flavonoid content (TFC), the method of Dewanto et al. (2002) was used. Results were expressed as milligrams of quercetin equivalents per gram dry extract (mg QE/g DE). Total tannin content (TTC) content was estimated using Folin-Ciocalteu method after their adsorption onto hide polyvinylpolypyrrolidone powder (Aidi Wannes and Marzouk 2016). Results were expressed as milligrams of gallic acid equivalents per gram of dry extract (mg GA/g DE). Condensed tannin content (CTC) was calculated using the method described by Aidi Wannes and Marzouk (2016). Results were expressed as milligrams catechin equivalents per gram dry extract (mg CE/g DE).