<abstract xmlns="http://www.w3.org/1999/xhtml">

<bold>Introduction</bold>: <italic>Rosa rugosa</italic> Thunb., commonly known as rugosa rose, has favorable properties. Due to the content of valuable compounds such as polyphenols and vitamins, it shows antioxidant activity, which can protect the organism against oxidative stress. The aim of this study was to evaluate the antioxidant potential of alcoholic extracts of <italic>R</italic>. <italic>rugosa</italic> leaves collected in 3 ripening periods and fruits at full ripening, harvested in 2 years.
<bold>Materials and methods</bold>: The plant extracts were prepared by ultrasound-assisted extraction, using 40%, 70%, 96% (v/v) ethanol and 99.8% methanol as solvents. The antioxidant activity was evaluated using the DPPH method.
<bold>Results</bold>: All the tested samples obtained from different parts of <italic>R</italic>. <italic>rugosa</italic> showed antioxidant potential. The antioxidant activity of leaf extracts was significantly higher than that of fruit extracts. The highest antioxidant activity of 90% radical scavenging activity (RSA) was observed in extracts in 70% (v/v) ethanol (extraction time: 30 min) and in methanol (extraction time: 15 min) from dried leaves harvested during fruiting.
<bold>Conclusions</bold>: <italic>R</italic>. <italic>rugosa</italic>, especially its leaves, is a valuable source of antioxidants and could be used in the cosmetic, pharmaceutical and food industries. The extraction conditions, i.e. time, solvent and its concentration, affect the antioxidant activity of the obtained extracts.
</abstract>

Introduction: Rosa rugosa Thunb., commonly known as rugosa rose, has favorable properties. Due to the content of valuable compounds such as polyphenols and vitamins, it shows antioxidant activity, which can protect the organism against oxidative stress. The aim of this study was to evaluate the antioxidant potential of alcoholic extracts of R. rugosa leaves collected in 3 ripening periods and fruits at full ripening, harvested in 2 years.
Materials and methods: The plant extracts were prepared by ultrasound-assisted extraction, using 40%, 70%, 96% (v/v) ethanol and 99.8% methanol as solvents. The antioxidant activity was evaluated using the DPPH method.
Results: All the tested samples obtained from different parts of R. rugosa showed antioxidant potential. The antioxidant activity of leaf extracts was significantly higher than that of fruit extracts. The highest antioxidant activity of 90% radical scavenging activity (RSA) was observed in extracts in 70% (v/v) ethanol (extraction time: 30 min) and in methanol (extraction time: 15 min) from dried leaves harvested during fruiting.
Conclusions: R. rugosa, especially its leaves, is a valuable source of antioxidants and could be used in the cosmetic, pharmaceutical and food industries. The extraction conditions, i.e. time, solvent and its concentration, affect the antioxidant activity of the obtained extracts.

Antioxidative activity of extracts from <italic>Rosa rugosa</italic> harvested in 2 years

Pomeranian Medical University in Szczecin

Chair and Department of Cosmetic and Pharmaceutical Chemistry

Pomeranian Journal of Life Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Antioxidative activity of extracts from  harvested in 2 years

Introduction: Rosa rugosa Thunb., commonly known as rugosa rose, has favorable properties. Due to the content of valuable compounds such as polyphenols and...

Antioxidative activity of extracts from Rosa rugosa harvested in 2 years

Publicado en línea: 18 ene 2022

Páginas: 57 - 63

DOI: https://doi.org/10.21164/pomjlifesci.751

Palabras clave
Rosa rugosa Thunb, antioxidant activity, DPPH, ultrasound-assisted extraction, vegetation stages, ethanolic extracts

© 2021 Daria Wira et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Antioxidative activity of extracts from Rosa rugosa harvested in 2 years

Publicado en línea: 18 ene 2022

Páginas: 57 - 63

DOI: https://doi.org/10.21164/pomjlifesci.751

Palabras claveRosa rugosa Thunb, antioxidant activity, DPPH, ultrasound-assisted extraction, vegetation stages, ethanolic extracts

© 2021 Daria Wira et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Palabras clave
Rosa rugosa Thunb, antioxidant activity, DPPH, ultrasound-assisted extraction, vegetation stages, ethanolic extracts