Subcritical water extraction of horse chestnut (Aesculus hippocastanum) tree parts Scientific paper

Main Article Content

Tanja Gagić
https://orcid.org/0000-0003-0331-3531
Željko Knez
Mojca Škerget
https://orcid.org/0000-0001-5619-3487

Abstract

Subcritical water extraction of horse chestnut (Aesculus hippocas­tanum) parts, such as seeds, seed shell, bark and leaves has been performed in a batch reactor at temperatures of 150, 200 and 250 °C and extraction times of 5, 15 and 30 min. The obtained extracts were analyzed by spectrophotometric methods to determine the total phenols, total carbohydrates and antioxidant act­ivity. Furthermore, the compounds detected in the extracts, such as triterpene saponins (escins), coumarin glycosides (esculin and fraxin), phenolic com­pounds (chlorogenic, neochlorogenic and gallic acids) and furfurals (5-hydro­xy­methyfurfural, furfural, and 5-methylfufrual) were quantified using HPLC. High amount of escins was obtained in the seed extracts, while the highest amounts of esculin and fraxin were obtained in bark extracts. The total phenol content was the highest in shell and bark extracts, which implies that these extracts gave the highest antioxidant activity.

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How to Cite
[1]
T. Gagić, Željko Knez, and M. Škerget, “Subcritical water extraction of horse chestnut (Aesculus hippocastanum) tree parts: Scientific paper”, J. Serb. Chem. Soc., vol. 86, no. 6, pp. 603-613, Jun. 2021.
Section
Chemical Engineering

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