Extraction of (+)-catechin from oak (Quercus spp.) bark: Optimization of pretreatment and extraction conditions

Hofmann, Tamás és Makk, Ádám Nándor és Albert, Levente (2023) Extraction of (+)-catechin from oak (Quercus spp.) bark: Optimization of pretreatment and extraction conditions. HELIYON, 9 (11). ISSN 2405-8440

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Absztrakt (kivonat)

Oaks (Quercus L., Fagaceae) are a widespread tree species worldwide, and in Hungary they account for nearly 30 % of the forests. Their wood is valuable, but their bark is considered as a byproduct. Oak bark, available in large quantities but with no dedicated use, contains a significant amount of valuable extractives. Its (+)-catechin content is around 1 %. (+)-Catechin is mostly used for food industry, medicine and many other industrial purposes, representing a significant financial value. The aim of the present research was to compare the (+)-catechin concentrations in the bark of the most important oak species found in Hungary and to optimize sample pretreatment (conservation) and extraction methods in order to achieve fast and efficient extraction. From these species the highest concentrations were measured in Q. robur and Q. robur ssp. slavonica (8–12 mg (+)-catechin/g dry bark). The combination of microwave sample pretreatment and microwave assisted extraction proved to be the most time- and cost-effective method. The utilization of the extracted bark powder for energetic purposes requires further investigations.

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agrártudományok > erdészeti és vadgazdálkodási tudományok
természettudományok > kémiai tudományok

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Mű tipusa:	Cikk
SWORD Depositor:	Teszt Sword
Felhasználó:	Csaba Horváth
A mű MTMT azonosítója:	MTMT:34264884
Dátum:	07 Nov 2023 09:08
Utolsó módosítás:	07 Nov 2023 09:08
URI:	http://publicatio.uni-sopron.hu/id/eprint/2834

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