Local genotypes of dog rose from Interior Aegean region of Turkey as a unique source of pro-health compounds

Volkan Okatan,Nazan Korkmaz,Ayşen Melda Çolak,Agnieszka Sękara,Sultan Filiz Güçlü

doi:10.1590/1678-4499.20180386

Abstract

ABSTRACT Rosehip, Rosa canina L. fruit, is valued for its flavor, taste, color and aroma, in accordance with its recognition as one of richest sources of pro-health compounds. Screening, preservation and propagation of the most valuable local populations of rosehip are performed for food, pharmacological, and cosmetic applications. Eleven native R. canina genotypes from the Interior Aegean region, Turkey, were collected and analyzed regarding organic acids, phenolic compounds, sugars, and DPPH scavenging activity within this study. Regarding biochemical profile of fruits, protocatechuic acid and quercitrin were the most dominant compounds among 12 identified phenolics. The dominant organic acids were malic and citric and fructose and glucose were the dominant sugars. There was no correlation between DPPH scavenging activity and the analyzed chemicals in fruits. Although levels of certain compounds varied significantly between consecutive years, the ranking of genotypes according to the levels of particular chemicals was maintained. Generally, the most promising chemotype regarding biological value was 64US03. The chemical composition and the presence of bioactive compounds make the native to Interior Aegean R. canina genotypes a valuable source of bioactive agents preventing oxidative-stress related diseases.

Highlights

R. canina is the most widespread species with the broad geographic range of all dog roses
Protocatechuic acid dominated in all R. canina genotypes, while p-coumaric and o-coumaric acids were determined in minimal amounts
The present study demonstrated that rosehip fruits constitute a good source of catechin and its derivatives

Summary

Introduction

R. canina is the most widespread species with the broad geographic range of all dog roses This species is resistant to environmental stress factors as low soil fertility or a harsh climate, and it readily colonizes wild, edge habitats, fallow pastures, or wastelands. Due to this feature, dog rose grows in valleys, as well as high altitude plateaus, even above 1,500 m altitude (Jürgens et al 2007). Dog rose is a perennial deciduous shrub, ranging from 1 to 4 m in height, sometimes climbing, with pink or white flowers and leaves composed of 5 or 7 leaflets (Fig. 1). Dog rose’s pseudo-fruits (rosehips), often named “fruits” in the literature, consist of several hairy achenes (30 to 40% of fruit fresh weight) enclosed by a red and fleshy floral cup, the urceolus (60 to 70% of fruit fresh weight) (Jagodzinski et al 2016)

Methods

Results

Conclusion