Kekik ve mercanköşk diğer yağlara göre daha yüksek antimikrobiyal aktivite gösterirken, her iki mikroorganizmaya karşı en yüksek antimikrobiyal aktiviteyi. Pazarbasi, B., Yilmaz, M., Türkiye Kosullarinda Üretimi Yapilan Spirulina platensis’ in Çesitli Ekstraktlarinin Antimikrobiyal Aktivite Kapasitesinin Belirlenmesi. antimikrobiyal aktivite, antioksidan aktivite, fenolik madde. Özet: Bu çalışmada Türkiye’nin Doğu Akdeniz Bölgesi’nden toplanan Tornabea.

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The obtained results are more sensitive than agar dilution method. Leakage of ions and other cell contents can then occur.

Browsing by Subject “Antimikrobiyal Aktivite”

It is also known that chemical composition of essential oils from antimikrobiysl particular plant species can vary according to the geographical origin and antimikrlbiyal period. A significantly higher release of cell constituent was observed when both bacteria cells were treated with mustard essential oil. Numerous investigations have confirmed altivite antimicrobial action of essential oils. Cumin and cardamon showed the lowest antimicrobial effect against E. However outcome of a test can be affected by factors such as the method used to extract the essential oil from plant material, the volume of inoculum, growth phase, culture medium used, pH of the media and incubation time and temperature.

The MIC values found for microplate assay was always lower that those found in antmiikrobiyal measurement because of its sensitivity. Please use this identifier to cite or link to this item: Diffusion methods can be classified as disc diffusion and agar well diffusion methods while dilution method can be classified as agar dilution and broth dilution methods.

Intracellular pH and ATP concentration and the release of cell constituents were measured when mustard essential oil was in contact with E.


The phenolic components are chiefly responsible for the antibacterial properties of essential oils. The MIC was determined by comparing the turbidity of the essential oil added well with the turbidity of negative control added well.

The concentration of essential oil which had the same anyimikrobiyal with negative control was determined as MIC and it was corroborated by OD measurement. The obtained inhibition diameters of essential oils against E. Microdilution method was used to determine MIC. The main advantage of essential oils is that they can be used in any food and are generally recognized as safe GRAS. Dilution methods are usually used to obtain minimum inhibitory concentration MIC and minimum bactericidal concentration MBC.

Browsing by Subject “Antimikrobiyal Aktivite”

Essential antimikrobiyl, known as volatile oils, are complex mixtures of aromatic and volatile constituents which are obtained by such as distillation, cold pressing and maceration.

The apparent antimicrobial efficacy of plant origin antimicrobials depends on factors such as the method of extracting essential oils from plant material,the part of a plant where the essential oil is extracted,type of solvent, volume of inoculum, growth phase, culture zktivite used, concentration of essential oil, temperature, oxygen and intrinsic or extrinsic properties of the food such as pH, fat, protein, NaCl, and physical structure of food.

In this study the results show that gram-negative E. In a study, how mustard essential oil affected the cell membrane of Escherichia coli O Its effect on other parameters was very significant except dry herbage and oil yield.

Hydrophobicity of essential oils and their components enables them anyimikrobiyal partition in the lipids of the bacterial cell membrane, disturbing the structures and rendering them more permeable. Preservation of food materials from spoilage, mainly by microbial activity, during production, storage and marketing is an important issue in the food industry. The aim of this study was to determine anhimikrobiyal antimicrobial activity of some essential oils dillweed, cardamon, basil, thyme, cumin, origanum, fennel and ginger essential oils against Escherichia coli and Staphylococcus aureus and to determine the MIC and MBC values of the selected essential oils.


MBC values of thyme and origanum essential oils against E. Applying different methods to determine antimicrobial activity of an essential oil cause to be obtained different results. Extensive loss of cell contents or the exit of critical molecules and ions will lead to death.

The obtained MIC values against E. Thyme and origanum essential oils showed higher antimicrobial activity than the other essential oils. Time of harvest had significant effect on yield of fresh herbage, content of oil and content of carvacrol. Generally both of the tested microorganisms were sensitive to many of the essential oils.

Essential oils can comprise more than sixty individual components. H7 and Salmonella typhi was investigated. Results showed that planting space had significant effect on plant diameter and very significant effect on other measured parameters except oil content, which was not significant.

There are also new concerns about chemical preservatives due to increasing occurrence of many respiratory illnesses. The maximum yield of dry and fresh herbage, yield and content of oil and thymol yield were obtained beginning of blooming stage. Although, they are GRAS, the application of essential oils is limited because of organoleptic changes in food.