Optimization of Antifungal Properties of Hop Cone Carbon Dioxide Extracts Based on Response Surface Methodology

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2024 Jun 19

PMID 38893430

Authors

Katarzyna Tyskiewicz

Renata Tyskiewicz

Marcin Konkol

Marcin Gruba

Rafal Kowalski

Affiliations

Soon will be listed here.

Abstract

Response surface methodology (RSM) was employed to optimize the process parameters of the supercritical carbon dioxide extraction of hop cones in terms of their antifungal properties against and . The effects of temperature (40-50 °C), pressure (200-300 bar), and CO consumption (25-75 kgCO/kg) on the extraction yield, content of α- and β-acids, as well as pathogens' growth inhibition were investigated. Both pressure and CO consumption had a significant effect on antifungal properties. It was observed that the best results for antifungal properties were obtained when hop cones were extracted with pure carbon dioxide at the temperature of 50 °C, under the pressure of 300 bar with CO consumption at the level of 75 kgCO/kg of feed for extraction. The highest antifungal properties of hop cone supercritical carbon dioxide extracts were analyzed as 100% for and 68% for , calculated as the growth inhibition of tested pathogens. The aim of the study was to determine the optimum values of extraction parameters to achieve the maximum response and enable us to investigate the interaction of these parameters on the antifungal properties of hop cone extracts.

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