4.7 Article

Influences of Different Extraction Techniques and Their Respective Parameters on the Phytochemical Profile and Biological Activities of Xanthium spinosum L. Extracts

Journal

PLANTS-BASEL
Volume 12, Issue 1, Pages -

Publisher

MDPI
DOI: 10.3390/plants12010096

Keywords

Xanthium; innovative extraction methods; anti-inflammatory activity; antioxidant; ultrasound-assisted extraction; biological activity

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The aim of this study was to investigate the effects of different extraction methods and parameters on the phytochemical and biological profiles of Xanthium spinosum L. extracts. Soxhlet extraction and ultrasound-assisted extraction were found to have the highest yields among the tested methods. Bioactive compound concentrations increased with extraction time and temperature, but decreased once the degradation points were reached. The extracts exhibited good protection against Gram-negative bacteria and increased antioxidant defense in rat plantar tissue.
The aim of this study was to identify possible influences of extraction methods as well as extraction parameters on the phytochemical and biological profiles of Xanthium spinosum L. extracts. Extraction methods were chosen as follows: classical methods, maceration and Soxhlet extraction; innovative extraction methods, turboextraction, ultrasound-assisted extraction, and a combination of the latter two. Extracts were subjected to total polyphenolic and flavonoid content spectrophotometric analysis. The phytochemical profile was determined for the best-yielding extracts using HPLC-MS analysis. Following the newly acquired data, another sorting of the extracts was performed. Biological activities such as antimicrobial and anti-inflammatory actions were evaluated, as well as oxidative stress reduction potential, on a Wistar rats inflammation model. Comparable results were achieved with Soxhlet extraction and ultrasound-assisted extraction, both surpassing all other tested methods in terms of yields. Bioactive compound concentrations tended to increase with the increase in extraction time and temperature. These maximal values lowered once the degradation points of the bioactive compounds were reached. Extracts demonstrated good protection against Gram-negative bacteria. Additionally, they provided good cellular protection and increased the antioxidant defense in the analyzed rat plantar tissue.

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