Počet záznamů: 1
Green solvents in pressurized liquid extraction from onion solid waste: trendy, required by legislation, or successfully competitive?
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SYSNO ASEP 0643677 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Green solvents in pressurized liquid extraction from onion solid waste: trendy, required by legislation, or successfully competitive? Tvůrce(i) Cerkal, R. (CZ)
Benešová, K. (CZ)
Kudláčková, Barbora (UIACH-O) ORCID
Pluháčková, H. (CZ)
Lojková, L. (CZ)Celkový počet autorů 5 Číslo článku 116288 Zdroj.dok. Microchemical Journal. - : Elsevier - ISSN 0026-265X
Roč. 220, JAN (2026)Poč.str. 8 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova water extraction ; chromatography ; pressurized liquid extraction ; green solvent Vědní obor RIV CB - Analytická chemie, separace Obor OECD Analytical chemistry Způsob publikování Omezený přístup Institucionální podpora UIACH-O - RVO:68081715 UT WOS 001630462000001 EID SCOPUS 105023081997 Anotace Green solvents being the only alternative due to legislative and environmental requirements, new methods are developed using environmentally friendly chemicals not compared to efficient but toxic classical solvents. The aim of this study was to vindicate the use of green solvents from the viewpoint of extraction yield and costs (including recycling or waste disposal) for the extraction of quercetin, its derivatives and protocatechuic acid from onion peel. Pressurized liquid extraction efficiency was compared for methanol, ethanol, ethyl acetate, acetone and their combinations, pure and modified with citric or acetic acid, at 40-120 degrees C contra aqueous ethanol, also modified with citric or acetic acid under the same conditions. Methanol and ethanol were the most promising classical and green solvents; method was optimised separately for each analyte: quercetin, quercetin glucoside, quercetin diglucoside and protocatechuic acid. While the best conditions slightly differ, ethanol/water (70/30 v/v) with 0.1 % of acetic acid is recommended at sample to inert material ratio 1:2 (v/v), 15 MPa, 120 degrees C and three cycles of 15 min extraction time for all analytes except quercetin diglucoside, which is extracted better by toxic but efficient methanol/water (70/30 v/v) with 0.1 % of acetic acid, also at 120 degrees C, 15 MPa and 3 x 15 min. In general, environmentally friendly solvent is more favourable both for the main analyte, quercetin (20,503 mg/kg), for protocatechuic acid, which has the highest antioxidation activity (935 mg/kg), and for total sum of analytes, "quercetin complex" (28,966 mg/kg). For determination of quercetin diglucoside, separate extraction by methanol is recommended (958 mg/kg). Pracoviště Ústav analytické chemie Kontakt Iveta Drobníková, drobnikova@iach.cz, Tel.: 532 290 234 Rok sběru 2027 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0026265X25036380?pes=vor&utm_source=scopus&getft_integrator=scopus
Počet záznamů: 1