Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A healing rose

15.10.2010
Roziana and Dalina of UiTM Perlis saw that roses have potential against microbial activities.

A rose not just romances, it heals.

A rose by any other name will be as sweet, wrote Shakespeare. Ever sensuous and sweet, the splendour of rose is everywhere, enchanting romance and love. But other than romancing, a rose can also speak serious matters. There is medicine in a rose.

Roses have been grown for garden plants and cut flowers for decor and a source of natural fragrances and flavourings. Now there is no less than 7,500 varieties of them. Not only scenting a garden and beautifying homes, history also shows roses have been used in medicine, food, perfume, and health. They have essential oils for perfumes thus widely used in cosmetic. Then the scent of a rose can be in many forms - rose water, rose petals, rose buds, and rose oil.

Knowing there are many uses of roses, researchers Roziana and Dalina worked to find another use of a rose for health, attempting to find an antibacterial agent in it. They did it by extracting the fresh rose and rose residue in different polarity of solvents.

Influenced by how our forebears used many kinds of plants to heal diseases, Roziana and Dalina found that botanical extracts have long been used to treat disease. Plants are known to have rich sources of valuable compounds and have been a major source of primary health care in many developing countries. These compounds are used as the active principle of many drugs. The screening of such plant extracts for antimicrobial activity has always been of great interest to scientists to look for new sources for food additives, cosmetics and drugs.

Thus likewise, Roziana and Dalina saw that roses have potential against microbial activities. They attempted to prove that the ethnobotanical use of rose petals can be a cure of diarrhea and enlarged tonsils, commonly caused by E.coli. In their experiment, an extraction process using several solvents was conducted, testing the extracts for antibacterial activity on Escherichia coli - the gram negative bacteria, through Kirby-Bauer disc diffusion method.

The petal tissues of flowers may possess antibacterial activity as a natural protection system for reproduction and further perpetuation through seed formation. So some rose varieties have been studied for differential activity potential at genotypic level and found to be active against a spectrum of the gram-positive and gram-negative bacteria with differences in activity profiles.

Usually, the different polarity compounds are extracted from roses but in this study, it was extracted from the roses residue. Extracted roses usually contain linalool, phenylethyl alcohol, citronelol, nerol and geraniol. While the the main compounds of rose extracted by solvent extraction are isopropyl myristate, rhondinol, 1-nonadecene and heneicosane. These compounds can be detected by gas chromatography with a spectrometry apparatus and generally, they have different polarity where they will be separated into similar groups of polarity solvent.

As the objective of the solvent extraction method is to separate the organic mixture into a similar groups of compounds, theoretically, the extracted polar compound has the tendency to be with the polar solvent. Hence the non polar compound will be rather chosen to be the non polar solvent.

To find antibacterial values, Roziana and Dalina used the Kirby Bauer disk diffusion susceptibility test. It was to determine the susceptibility or resistance of pathogenic aerobic and facultative anaerobic bacteria to various antimicrobial compounds. They screened the extracts for antibacterial activity where a paper disc was soaked with the rose extracts then laid on the top of an inoculated agar plate.

During incubation, each chemotherapeutic agent diffuses out from the disc in all directions. Agents with lower molecular weights diffuse faster than those with higher molecular weights. Clear areas, called zones of inhibition, appear on the agar around discs where the agents inhibit the microorganism. An agent of large molecular size might be a powerful inhibitor even though it might diffuse only a small distance and produce a small zone of inhibition.

Good news folks, Roziana and Dalina found that the fresh rose extract from ethyl acetate showed the most promising result from the other four extracts. It showed a 39 mm zone of inhibition on Mueller Hinton agar, the largest diameter zone compared to the other extracts, indicating that the Gram-negative bacteria of E.coli were highly susceptible to the extract. This means the rose extract was potential to kill or retard the growth of E.coli. They concluded that the intermediate polar compounds in roses either fresh or residues, they are giving great potential as antibacterial agent in order to inhibit the E.coli.

A rose not just romances, it heals.

Roziana Mohamed Hanaphi
Dalina Samsudin
Faculty of Applied Sciences
UiTM Perlis, Malaysia
Email: roziana@perlis.uitm.edu.my
dalina@perlis.uitm.edu.my

Megawati Omar | Research asia research news
Further information:
http://inforec.uitm.edu.my
http://www.researchsea.com

More articles from Life Sciences:

nachricht Rainbow colors reveal cell history: Uncovering β-cell heterogeneity
22.09.2017 | DFG-Forschungszentrum für Regenerative Therapien TU Dresden

nachricht The pyrenoid is a carbon-fixing liquid droplet
22.09.2017 | Max-Planck-Institut für Biochemie

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: The pyrenoid is a carbon-fixing liquid droplet

Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.

A warming planet

Im Focus: Highly precise wiring in the Cerebral Cortex

Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.

The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...

Im Focus: Tiny lasers from a gallery of whispers

New technique promises tunable laser devices

Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...

Im Focus: Ultrafast snapshots of relaxing electrons in solids

Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!

When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...

Im Focus: Quantum Sensors Decipher Magnetic Ordering in a New Semiconducting Material

For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.

Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

“Lasers in Composites Symposium” in Aachen – from Science to Application

19.09.2017 | Event News

I-ESA 2018 – Call for Papers

12.09.2017 | Event News

EMBO at Basel Life, a new conference on current and emerging life science research

06.09.2017 | Event News

 
Latest News

Rainbow colors reveal cell history: Uncovering β-cell heterogeneity

22.09.2017 | Life Sciences

Penn first in world to treat patient with new radiation technology

22.09.2017 | Medical Engineering

Calculating quietness

22.09.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>