What is it about?

Chemical analysis of the bark from four Hyrcanian forest species, Pterocarya fraxinifolia, Alnus subcordata, Gleditsia caspica and Parrotia persica were performed, and their total phenol contents, and antioxidant and chelating activities were evaluated.

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Why is it important?

Detailed and systematic studies are not available on the chemical analysis and antioxidant properties and bioactivity of the bark of these trees. The main objective of the present work is to fill in this gap and to analyze the chemical components and total phenol contents, and the antioxidant properties of the bark and to identify the components responsible for their bioactivity. The expectation is that the listed species could contribute with their more effective utilization to the socioeconomic development of the region.


Hyrcanian forests are located at a green band extending over the northern slopes of the Alborz Mountains and the southern coasts of the Caspian Sea in Iran and are approximately 800 km long and 110 km wide, with a total area of 1.85 M ha . Hyrcanian forests encompass various forest types including 80 woody species. There are similarities between the flora of the Hyrcanian forests, middle European deciduous roadleaved forests and western North America’s deciduous broadleaved forests. When Europe and western North America were covered by ice during the Ice Age, Hyrcanian forest were alive, and at the end of frozen period, plant species of Hyrcanian forests immigrated to Europe. Therefore, the Hyrcanian forests can be considered as partly a renewal source of European forests. Nevertheless, the physiognomic and taxonomic aspects of the Hyrcanian forests are very different.

Sahab Hedjazi
University of Tehran

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This page is a summary of: Chemical analysis and antioxidant activities of bark extracts from four endemic species of Hyrcanian forests in Iran, Holzforschung, September 2018, De Gruyter,
DOI: 10.1515/hf-2018-0113.
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