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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A number of essential oil components has been identified as effective antibacterials, 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 antimi,robiyal used, pH of the media and incubation time and temperature.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated. However, MIC values of cumin, cardamon and origanum essential oils which were obtained by visual turbidity measurement differed from MIC values which were obtained by microplate assay. Its effect on other parameters was very significant except dry herbage and oil yield. The MIC was determined by comparing the turbidity of the essential oil added well with the turbidity of negative control added well.
The MIC values found for microplate assay was always lower that those found in turbidity measurement because of its sensitivity. Cumin and cardamon showed the lowest antimicrobial effect against E. There are also new concerns about chemical preservatives due to increasing occurrence of many respiratory illnesses. Leakage of ions and other cell contents can then occur. On the contrary, no antibacterial activity was observed for basil, ginger and fennel essential oils against E.
Numerous investigations have confirmed the antimicrobial action of essential oils. The obtained MIC values against E. Therefore comparison of published data is complicated. 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 medium 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 method obtained MIC values of E. MBC values of thyme and origanum essential oils against E.
The obtained results are more sensitive than agar dilution method. Applying different methods to determine antimicrobial activity of an essential oil cause aktivtie be obtained different results. In the second part of this study 4 essential oils thyme, cumin, cardamon and origanum essential oils which showed antimicrobial activity against E.
Browsing by Subject “Antimikrobiyal Aktivite”
Preservation of food materials from spoilage, mainly by microbial activity, during production, storage and marketing is an important issue in the food industry. Tests of antimicrobial activity can be classified as diffusion and dilution methods. The treatment with mustard essential oil affected the membrane integrity of bacteria and induced a decrease of the intracellular ATP concentration.
MBC is defined as concentration where The activity of dillweed, cardamon, thyme, cumin and origanum essential oils against E. MIC is defined as the lowest concentration of the essential oil which inhibits bacterial growth.
Browsing by Subject “Antimikrobiyal Aktivite”
Essential oils, known as volatile oils, are complex mixtures of aromatic and volatile constituents which are obtained by such as distillation, cold pressing and maceration. Inhibitory effect of these selected essential oils were monitored during incubation period 0; 2; antimimrobiyal 6; 8; 10; 12; 18, 20; 22 and 24 h and the bacterial growth was determined by measuring optical density OD at nm.
It is also known that chemical composition of essential oils from a particular plant species can vary according to the akyivite origin and harvesting period.
Although, they are GRAS, the application of essential oils is limited because of organoleptic changes in food. The aim of this study was to determine the 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.
In this study, dillweed, cardamon, basil, thyme, cumin, origanum, fennel and ginger essential oils were studied for their antimicrobial activity against Escherichia coli sktivite Staphylococcus aureus by agar well diffusion method.
Depends sktivite the OD measurement results, for all the tested oils, the MBC values were equivalent to the MIC values, confirming their microbicidal effects. There is some evidence that minor components have a critical part to play in antibacterial activity, possibly by producing a synergistic effect between other components.
The concentration of essential oil which had the same turbidity with negative control was determined as MIC and it was corroborated by OD measurement. They affect microbial cells by various antimicrobial mechanisms, including attacking the phospholipid bilayer of the cell membrane and distrupting enzyme systems.