Antimicrobial and antioxidant activities of the essential oil from onion (Allium cepa L.)

Ye, Chunlin; Dai, De‐Zai; Hu, Weilian

doi:10.1016/j.foodcont.2012.07.033

Cited by 178 publications

(131 citation statements)

References 42 publications

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“…In the DPPH test, the antioxidants managed to reduce the stable DPPH radical to yellow-colored diphenylpricryhydrazine. The effects of antioxidants on DPPH radical scavenging are attributed to their hydrogen-donating ability (Ye et al, 2013). In this study, an in vitro examination of the free radical scavenging activity of the essential oils is presented.…”

Section: Antioxidant Activity and Cytotoxicitymentioning

confidence: 99%

Investigation on Chemical Composition, Antimicrobial, Antioxidant, and Cytotoxic Properties of Essential Oil From Dracocephalum Kotschyi Boiss

Ashrafi

Ramak

Ezatpour

et al. 2017

Afr J Tradit Complement Altern Med

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Background: Dracocephalum kotschyi Boiss is a herb with wide-spread applications. Lorestan traditional healers have applied it for the treatment of rheumatoid diseases and stomach disorders. Materials and methods: Hydrodistillation process was used for essential oil extraction, the extracted essential oil was then analyzed through combination of capillary GC-FID, GC-MS and RI. The in vitro antimicrobial, antioxidant and cytotoxic activities of this essential oil were examined. Results indicate that the essential oil has a broad range of antimicrobial activity against all of the tested microorganisms. Results: The 50% of cytotoxic concentrations was 26.4 μg/ml and 4266.7 μg/ml for Hela cells and human lymphocytes, respectively. The oil cytotoxicity against the human tumor cell line was far higher than the amount required for human healthy cells. Conversely, the essential oil's IC 50 value of 49.2 μg/ml in the DPPH assay, could be regarded as its strong antioxidant potential. Conclusion: According to the data obtained, it can be concluded that D. kotschyi essential oil could be applied as a safe antibacterial and antioxidant agent for food and pharmaceutical purposes.

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Section: Antioxidant Activity and Cytotoxicitymentioning

confidence: 99%

Investigation on Chemical Composition, Antimicrobial, Antioxidant, and Cytotoxic Properties of Essential Oil From Dracocephalum Kotschyi Boiss

Ashrafi

Ramak

Ezatpour

et al. 2017

Afr J Tradit Complement Altern Med

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“…The reducing power was determined through the transformation of Fe 3+ to Fe 2+ induced by plant extracts according to the method reported by Ye et al (2013). Sample solutions at different concentrations were mixed with 2.5 mL of 0.2 M phosphate buffer (pH 6.6) and 2.5 mL potassium ferricyanide solution (1% w/v).…”

Section: Determination Of Total Reducing Powermentioning

confidence: 99%

“…The ability of compounds or medicinal plants to donate hydrogen to radicals increases their ability to scavenge such radicals (Ye et al, 2013). In T. sericea, the free radical scavenging compounds in the leaves are likely to be very polar compounds while the free radical scavenging compounds found in the stem and root may be partly due to highly polar and less polar compounds.…”

Section: Free Radical Scavenging Activity (Dpph)mentioning

confidence: 99%

“…This showed that T. sericea exerts its antioxidant activity through proton and electron donations and these compounds could be polar and non-polar. According to Ye et al (2013), it is not sufficient to use one antioxidant test to establish the antioxidant activity of medicinal plant since the plants have complex phytochemical facets. At least two tests should be used to establish authenticity.…”

Section: Reducing Power Activitymentioning

confidence: 99%

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Phenolic content distribution and antioxidant activities of <i>Terminalia sericea</i> Burch

Anokwuru¹,

Ramaite²

2015

Afr. J. Trad. Compl. Alt. Med.

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Background: Terminalia sericea has been used traditionally for the treatment of diseases associated with oxidative stress. This study was aimed at determining the distribution of phenols in the leaves, stem bark and root bark of Terminalia sericea and their antioxidant activity. Materials and methods: Hot and cold water, methanol/acetone extracts were evaluated for their total phenolic content (TPC), flavone/flavonol content (FFC), flavonone/dihydroflavone content (FDFC), hydroxycinnamic acid derivative content (HCAC) and tannin content (TC). DPPH (2,2-diphenyl-1-picrylhydrazyl) free radicals and reducing power assays were used to assess the antioxidant activity. Results: The leaves had the highest average TPC (440) expressed in milligram Gallic Acid Equivalent (mgCAE) /gram of the extract. The leaves also had the highest average TC (7.14) expressed in milligram Quercetin Equivalent (mgQE) /gram of the extract. The stem had the highest average FDFC (19.23 mgQE/g) while the root had the highest average FFC (74.76 mgQE/g) and HCAC (214.57) expressed in milligram Caffeic Acid Equivalent mgCAE/ gram of the extract. The stem exhibited the highest average DPPH free radical scavenging (9.85 µg/mL) and reducing power (6.01 µg/mL) activities. Water was a better extracting solvent for TPC and FDFC while methanol/acetone was a better extracting solvent for FFC and HCAC. The correlation between TC and reducing power activity (r=0.668) at P < 0.05 suggests that tannins were responsible for the antioxidant activity. Conclusion: This study has shown that the distribution of phenolics differs in the organs of T. sericea, and could affect the quality of medicinal products sold.

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“…The bulbs are useful in haemorroids, dysentery, flatulence, dyspepsia, bronchitis, ophthalmia, vomiting, otalgia, pharyngodynia, malarial fever, lumbago, epilepsy, tumours, wounds, paralysis, arthralgia, leucoderma, asthma and skin diseases. 5 The plants Allium cepa are proved to show the analgesic, 6 antidiabetic, 7 antioxidant, 8 antidepressant, 9 aphrodisiac, 10 antihyperlipidemic. 11 Coffee powder is obtained from the roasted beans of Coffea Arabica plant.…”

Section: Introductionmentioning

confidence: 99%

Pharmacological and Behavioral Comparative Study of Allium Cepa Linn. Bulb and Coffee with Bhavana Treatment in Rats

Kalangutker¹,

Joshi²

2015

PPIJ

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IntroductionHerbs are nature's gift to mankind and herbal renaissance is blooming across the world. Medicinal plants have proved to be of utmost importance to the human race.1 With its base in medicinal plants and its origins in ancient Indian history, Ayurveda is recognised as one of the major systems of alternative medicine. Today, after a century has elapsed, we have come to realize the limitations of the allopathic system of medicine hence scientists have started concentrating on drugs of plant origin again.2 In this study, the juice of onion was used to give Bhavana to coffee powder. A unique process used in Ayurveda is the process known as "Bhavana" (Impregnation/ Trituration). In this process, a drug or mixture of drugs in powdered form is triturated with a liquid extract of appropriate herb. The wet extract is dried and the process is repeated several times. This process mixes the drugs completely, breaks the complicated chemical molecules into easily absorbable simpler ones thus augmenting the potency of medicines to many folds.3 Besides processing of the drug the duration of administration of the drug is of great importance in Ayurvedic Therapy. It is claimed in Ayurveda that drug produces effect on repeated administration rather than acute administration.The objective of the present study was the evaluation of the principals involved in Ayurvedic processing as well as the duration of administration on its effects. Nasal therapy, also called "NASYA KARMA", has been recognized form of treatment in the Ayurvedic system of medicine. Nasyas are advised to the people suffering from diseases of the head and other organs situated above the shoulder. 4 The plant used in this study is Allium cepa Linn, commonly known as onion belonging to the family Liliaceae. The bulbs are useful in haemorroids, dysentery, flatulence, dyspepsia, bronchitis, ophthalmia, vomiting, otalgia, pharyngodynia, malarial fever, lumbago, epilepsy, tumours, wounds, paralysis, arthralgia, leucoderma, asthma and skin diseases. antihyperlipidemic. 11 Coffee powder is obtained from the roasted beans of Coffea Arabica plant. The main effect is CNS stimulation and diuretic action due to the presence of caffeine which is the major pharmacologically active purine present in coffee. The seeds of coffee are bitter, stimulant, diuretic, antipyretic and aromatic. It stimulates the flow of digestive juices and intestinal peristalsis.12 A literature review has revealed that no comparative study till now has been performed on the Allium cepa Linn along with powdered coffee prepared by the process of Bhavana. Materials and methods AnimalsFemale adult Wistar Albino rats weighing of 300-350gm, obtained from the animal house of Department of Pharmacology, Goa College of Pharmacy were used for this study. The animals were housed in polypropylene cages in groups and maintained under standard conditions (temperature 25±2°C, relative humidity 55±10% and AbstractObjective: To evaluate and compare the effects of Allium cepa Linn. bulb and coffee with Bhavana tre...

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Antimicrobial and antioxidant activities of the essential oil from onion (Allium cepa L.)

Cited by 178 publications

References 42 publications

Investigation on Chemical Composition, Antimicrobial, Antioxidant, and Cytotoxic Properties of Essential Oil From Dracocephalum Kotschyi Boiss

Investigation on Chemical Composition, Antimicrobial, Antioxidant, and Cytotoxic Properties of Essential Oil From Dracocephalum Kotschyi Boiss

Phenolic content distribution and antioxidant activities of <i>Terminalia sericea</i> Burch

Pharmacological and Behavioral Comparative Study of Allium Cepa Linn. Bulb and Coffee with Bhavana Treatment in Rats

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