Variation of the essential oil content and composition in leaves from cultivated plants of <i>Hypericum androsaemum</i> L.

Guedes, Ana P.; Amorim, Lúcia R.; Vicente, Ana María; Fernandes-Ferreira, Manuel

doi:10.1002/pca.758

Cited by 26 publications

(28 citation statements)

References 13 publications

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“…The reason for this may be the plant composition. Essential oils content and composition can be greatly affected by several parameters including seasonal variation (Guedes et al, 2004), phenological cycle (Schwob et al, 2004) and geographic distribution. Cai et al, (2004) reported that free radical scavenging abilities of plants are responsible for their curative impact against some diseases.…”

Section: Discussionmentioning

confidence: 99%

The Biological Activities of Hypericum Perforatuml

Ökmen¹,

Balpinar²

2016

AJTCAM

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Background: Mastitis reduces milk yield and alters milk composition. Antibiotics are widely used in the treatment of the disease. However, this widespread use of antibiotics causes both antibiotic residues in milks and antibiotic resistance developed in bacteria. Today's researches are focused on discovering and using new antibiotics against bacteria. Objective: The aim of this work was to discover the antibacterial effects of Hypericum perforatum L. extracts against mastitis pathogens, and its other biological activities. Material and Methods: Kirby-Bauer assay was applied to the extracts. The other antibacterial activity was MIC for plant extracts. The non-enzymatic antioxidant activity was found using 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH). Results: The extract was showed maximum inhibition zone against two bacteria (Coagulase-negative Staphylococci-33 and 37; CNS 33 and 37), and the zone was 17 mm. A bacterium (CNS -22) showed the lowest sensitivity to 812.5 µg /mL concentration. In addition, the extract was tried against the stable DPPH for antioxidant activity. As a result, the extract showed a strength antioxidant activity. Trolox equivalent is 0.83 mM. Conclusion:The extract of Hypericum perforatum have antibacterial, antioxidant and antimutagenic potentials.

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Section: Discussionmentioning

confidence: 99%

The Biological Activities of Hypericum Perforatuml

Ökmen¹,

Balpinar²

2016

AJTCAM

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“…quantification methods (Ghasemi Pirbalouti et al, 2013;Guedes et al, 2004;Petrakis et al, 2005;Radusiene et al, 2005;Southwell & Bourke, 2001;Teixeira et al, 2013).…”

Section: Chemical Compositionsmentioning

confidence: 99%

Chemical composition and bioactivity of essential oils ofHypericum helianthemoides. Hypericum perforatumandHypericum scabrum

Pirbalouti

Fatahi-Vanani

Craker

et al. 2013

Pharmaceutical Biology

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Context: A number Hypericum species are well known for their therapeutic efficacy and use in traditional medicine. The various species of Hypericum have been traditionally used for the treatment of wounds, eczema, burns, trauma, rheumatism, neuralgia, gastroenteritis, ulcers, hysteria, bedwetting and depression. Objective: This study evaluated the in vitro antioxidant, antibacterial and phytochemical properties of essential oils of Hypericum helianthemoides (Spach) Boiss., Hypericum perforatum L. and Hypericum scabrum L. (Hypericaceae) collected from alpine region of Southwest Iran. Materials and methods: The essential oils obtained from dried flowering aerial parts of three Hypericum species were analyzed by gas chromatography and gas chromatography/mass spectrometry to determine chemical compositions. The antibacterial activity of essential oils within concentration ranges from 16 to 500 mg/mL was individually evaluated against Bacillus cereus, Listeria monocytogenes, Proteus vulgaris and Salmonella typhimurium. The 1,1-diphenyl-2-picrilhydrazyl (DPPH) radical scavenging activity of essential oils was determined using DPPH assay. Results: Essential oil yield of H. helianthemoides, H. scabrum and H. perforatum were 0.12, 0.20 and 0.21 mL/100 g dried material, respectively. The major constituents of the essential oils were a-pinene (12.52-49.96%), b-pinene (6.34-9.70%), (E)-b-ocimene (4.44-12.54%), b-caryophyllene (1.19-5.67%), and germacrene-D (2.34-6.92%). The essential oils of three Hypericum species indicated moderate-to-good inhibitory activities against four bacteria, especially against L. monocytogenes. Discussion and conclusion: The essential oils of the three studied Hypericum species sourced in alpine region of West Iran were rich in monoterpene and sesquiterpenes hydrocarbons. Among the three tested species, the essential oil of H. scabrum showed the highest antibacterial and antioxidant activities.

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“…The reason for this may be the plant composition. It is known that some factors such as geographic distribution, phenological cycle and seasonal variation affect chemical content and composition of essential oils (Guedes, et al, 2004;Schwob, et al, 2004). Aligiannis et al (2001) claimed that plant materials must be classified with regard to MIC results, in our study the various extracts from M. aurea can be seen as a weak inhibitor of mastitis pathogens.…”

Section: Discussionmentioning

confidence: 83%

The Biological Activities of Moltkia Aurea Boiss., an Endemic Species to Turkey

Balpinar¹,

Ökmen²

2017

Afr J Tradit Complement Altern Med

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Background: Staphylococcus aureus is the direct reason of mastitis. Mastitis is a disease characterized by pathological changes in mammary glands as well as physical, chemical, bacteriological changes in milk. This disease causes loses in milk yield and quality. In recent years, it is reported that mastitis pathogens have developed a resistance to antibiotics as a natural consequence of widespread use of it. Today's researches are focused on discovering and using new antibiotics against bacteria. The aim of this paper is to examine the antibacterial properties of Moltkia aurea Boiss.] [o] (an endemic species to Turkey), and its other biological activities. Materials and Methods:All of the extracts were tested by disc diffusion assay in order to screen antibacterial activity. MIC values were evaluated as antibacterial activities of plant extracts. The non-enzymatic antioxidative activities including DPPH radical scavenging effects were studied in vitro. Results and Conclusions:Results shown that the extracts had strong antibacterial effects on three bacteria (S. aureus-17, S. aureus-18 and CNS-37) and the range of inhibition zone was 4-6mm. This three bacteria screened the lowest sensitivity to 65000 µg /mL concentration. Besides, the extracts were tested for non-enzymatic antioxidant activities. As a result, the methanol extract of the flower displayed a strong antioxidant activity. The various extracts of Moltkia aurea have different antibacterial and antioxidant properties.

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Variation of the essential oil content and composition in leaves from cultivated plants of Hypericum androsaemum L.

Cited by 26 publications

References 13 publications

The Biological Activities of Hypericum Perforatuml

The Biological Activities of Hypericum Perforatuml

Chemical composition and bioactivity of essential oils ofHypericum helianthemoides. Hypericum perforatumandHypericum scabrum

The Biological Activities of Moltkia Aurea Boiss., an Endemic Species to Turkey

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