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Analysis of nutritionally important substances in fruit tree waste products by HPLC
Šírová, Karolína ; Šatínský, Dalibor (advisor) ; Sklenářová, Hana (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Analytical Chemistry Candidate: Bc. Karolína Šírová Supervisor: doc. RNDr. Dalibor Šatínský, Ph.D. Consultant: Mgr. Anežka Adamcová Title of Diploma Thesis: Analysis of nutritionally important substances in fruit tree waste products by HPLC This diploma thesis deals with the content of phenolic compounds in various parts of tree of the genus Pyrus. The theoretical part is focused on characterization, biosynthesis, chemical and biological properties of major phenolic compounds in pear-trees and the possibilities of their determination with the use of the latest scientific studies. The experimental part contains an extensive analysis of arbutin, chlorogenic acid, 1,5- dicaffeoylquinic acid, 3,5- dicaffeoylquinic acid and rutin in extracts of leaves, bark, buds, fruits, flowers and wood chip. Developed and validated HPLC-DAD method was used and the total antioxidant activity was determined by FIA method with electrochemical detection. An ASCENTIS Express RP-Amide 150×4.6 mm, 2.7 μm analytical column and gradient elution consisting of organic part of acetonitrile (ACN) and water part with 0,85% phosphoric acid (pH = 2.2) were used for analysis. The detection was performed by DAD detector at wavelengths 220 nm, 327 nm and 354 nm. The...
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