Featured Research

from universities, journals, and other organizations

Differences in phenolic makeup of indigenous rose species, modern cultivars

Date:
May 27, 2014
Source:
American Society for Horticultural Science
Summary:
Leaf and petal phenolic profiles of four rose species traditionally used for medicinal purposes and three modern rose cultivars have been reviewed by researchers. Distinct differences in the distribution of leaf phenolic compounds were observed, especially between Rosa species and modern rose cultivars. The study also determined a strong correlation between color parameters and total anthocyanin content.

Rosa canina was one of the indigenous roses in a study of leaf and petal phenolic profiles. Differences were found in the makeup of modern rose varieties and indigenous species.
Credit: Valentina Schmitzer

The leaves and petals of roses are valued for their medicinal and aesthetic uses around the world. A new study identified specific phenolic compounds found in the petals of indigenous rose species and compared them with the phenolic profiles of modern rose cultivars to determine differences in the makeup of roses traditionally used for medicinal purposes and those varieties cherished for aesthetic qualities. According to the results, distinct differences exist in the distribution of leaf phenolic compounds, especially between indigenous rose species and modern rose cultivars.

Vlasta Cunja, corresponding author of the study published in the Journal of the American Society for Horticultural Science, said that previous research has linked phenolic and mineral composition of rose hips to their antioxidant activity. Phenolic antioxidants have also been identified in the petals of several rose species, but research on rose leaf polyphenols has been rare. Using high-performance liquid chromatography/mass spectrometry, Cunja and colleagues determined leaf and petal phenolic profiles of four indigenous rose (Rosa) species (R. canina, R. glauca, R. rubiginosa, R. sempervirens) traditionally used for medicinal purposes and three modern rose cultivars (Rosarium Uetersen, Ulrich Brunner Fils, Schwanensee).

The researchers identified seven different anthocyanins--the principal pigments responsible for intense red to mauve colors--in the rose petals. They found a "strong correlation" between color parameters and total anthocyanin content in petals. Additionally, 31 flavonols were detected in the rose petals; flavonol content varied significantly among species and cultivars analyzed. The analyses tentatively identified 30 different flavonols in the leaves of different rose species and cultivars.

"Our analyses revealed significant variations in the content and composition of phenolic compounds among species, cultivars, and plant petals and leaves," Cunja said. Interestingly, distinct differences in the distribution of leaf phenolic compounds were found between indigenous species and modern rose cultivars. Among the species investigated, leaves of Rosa canina stood out for their high and varied phenolic content. "The traditional practice of using Rosa canina for medicinal purposes appears scientifically justified because (the species) contains significantly more phenolic antioxidants compared with other naturally occurring rose species of the region," Cunja said.

The modern cultivar 'Schwanensee' was determined to be most dissimilar of all cultivars analyzed as a result of the low levels of phenolic constituents found in the leaves. The authors said this could potentially be linked to the cultivar's susceptibility to diseases. They concluded that species are likely more suitable than cultivars as a potential source of leaf phenols with antioxidative activity.


Story Source:

The above story is based on materials provided by American Society for Horticultural Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Vlasta Cunja, Maja Mikulic-Petkovsek, Franci Stampar And Valentina Schmitzer. Compound Identification of Selected Rose Species and Cultivars: an Insight to Petal and Leaf Phenolic Profiles. Journal of the American Society for Horticultural Science, March 2014

Cite This Page:

American Society for Horticultural Science. "Differences in phenolic makeup of indigenous rose species, modern cultivars." ScienceDaily. ScienceDaily, 27 May 2014. <www.sciencedaily.com/releases/2014/05/140527124107.htm>.
American Society for Horticultural Science. (2014, May 27). Differences in phenolic makeup of indigenous rose species, modern cultivars. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2014/05/140527124107.htm
American Society for Horticultural Science. "Differences in phenolic makeup of indigenous rose species, modern cultivars." ScienceDaily. www.sciencedaily.com/releases/2014/05/140527124107.htm (accessed September 20, 2014).

Share This



More Plants & Animals News

Saturday, September 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: San Diego Zoo Welcomes Cheetah Cubs

Raw: San Diego Zoo Welcomes Cheetah Cubs

AP (Sep. 20, 2014) — The San Diego Zoo has welcomed two Cheetah cubs to its Safari Park. The nearly three-week-old female cubs are being hand fed and are receiving around the clock care. (Sept. 20) Video provided by AP
Powered by NewsLook.com
Chocolate Museum Opens in Brussels

Chocolate Museum Opens in Brussels

AFP (Sep. 19, 2014) — Considered a "national heritage" in Belgium, chocolate now has a new museum in Brussels. In a former chocolate factory, visitors to the permanent exhibition spaces, workshops and tastings can discover derivatives of the cocoa bean. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com
Could Grief Affect The Immune Systems Of Senior Citizens?

Could Grief Affect The Immune Systems Of Senior Citizens?

Newsy (Sep. 19, 2014) — The study found elderly people are much more likely to become susceptible to infection than younger adults going though a similar situation. Video provided by Newsy
Powered by NewsLook.com
Jury Delivers Verdict in Salmonella Trial

Jury Delivers Verdict in Salmonella Trial

AP (Sep. 19, 2014) — A federal jury has convicted three people in connection with an outbreak of salmonella poisoning five years ago that sickened hundreds of people and was linked to a number of deaths. (Sept. 19) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins