Fruits of Euterpe oleracea are widely used in foreign medical practice as an antioxidant. The fruits of Euterpe contain tannins. The most common method of quantitative determination of tannins is spectrophotometry. The purpose of this work is to determine the content of the sum of tannins in the fruits of Euterpe by spectrophotometry
Quantitative determination of the amount of tannins in the fruits of Euterpe by direct spectrophotometry was carried out. To confirm the presence of tannins in the fruits of Euterpe, qualitative reactions were used (1% solution of iron-ammonium alum, 1% solution of vanillin in concentrated hydrochloric acid). The presence of tannins was confirmed by direct spectrophotometry in extracts from euterpe fruits, the analytical maxima of the studied compounds were determined at about 282±2 nm, which corresponds to the maximum absorption of catechin. The optimal conditions for the extraction of tannins from the raw materials of this plant (extractant – ethyl alcohol 40%; the ratio of "raw material – extractant" – 1 : 100; extraction time – 60 minutes; the degree of grinding of raw materials – 1.0 mm) are justified. It was determined that the average error in determining the content of tannins in the fruits of euterpe with a confidence probability of 95% is ±1.59%. It was revealed that the content of tannins in the fruits of euterpe is 8.90%.
РезюмеВведение. В настоящее время активно ведутся исследования, направленные на поиск новых биообъектов как источников биологически активных веществ. Это необходимо для того, чтобы получить продуценты, которые будут выгодны в культивировании, поддержании их жизнедеятельности и получении на выходе достаточного количества и высокого качества целевых продуктов. Одним из таких источников могут быть микро-и макроводоросли. Цель. Целью настоящего исследования является проведение фитохимического анализа для подтверждения наличия широкого спектра БАС, а также исследований по выбору оптимальных параметров экстрагирования биомассы хлореллы С-2019 с целью получения экстрактов с высоким содержанием БАС, обладающих антибактериальным действием (пигменты, флавоноиды).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.