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RISS 인기검색어
- 검색키워드
- 저자 : Mustafa Oskay (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Determination of Some Chemical Parameters and Antimicrobial Activity of Traditional Food: Mesir
Mustafa Oskay,Tamer Karayıldırım,Emriye Ay,Kadir Ay 한국식품영양과학회 2010 Journal of medicinal food Vol.13 No.5
The antimicrobial activities and some chemical properties of the traditional Turkish food called mesir paste were studied. Results of chemical analysis for moisture and volatiles, water-insoluble components, refractive index, soluble solids content, raw fiber, invert sugar, total ash, 5-hydroxymethylfurfural, acidity, and pH were calculated as 17.06%, 2.55%, 1.491, 80.2%, 0.70%, 40.54%, 0.13%, 44mg/kg, 0.9% anhydrous citric acid, and 3.6, respectively. Mesir paste was extracted individually by six solvents with different polarity, and antimicrobial activities of each extracts were determined against 12 microbial strains, mostly food-borne, including pathogens, by the agar well diffusion method. All extracts obtained showed antimicrobial activity ranging from 8mm to 40mm, and the butanolic extract displayed stronger antimicrobial activity against all tested microorganisms; Gram-positive strains were found to be more sensitive than Gram-negative strains. Antimicrobial potency of n-butanol extracts of mesir paste was determined in term of minimal inhibitory concentration and minimal bactericidal concentration for the sensitive microorganisms. In addition, some commercial antibiotics such as ampicillin, gentamicin, and nystatin were used as positive controls to determine the sensitivity of the strains
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Antimicrobial and Antioxidant Activities of Mycelia of 10 Wild Mushroom Species
Fatih Kalyoncu,Mustafa Oskay,Hu¨sniye Sag˘lam,Tug˘c¸e Fafal Erdog˘an,A. U¨ same Tamer 한국식품영양과학회 2010 Journal of medicinal food Vol.13 No.2
Antimicrobial and antioxidant activities of mycelia obtained from 10 wild edible mushrooms—Armillaria mellea, Meripilus giganteus, Morchella costata, Morchella elata, Morchella esculenta var. vulgaris, Morchella hortensis, Morchella rotunda, Paxillus involutus, Pleurotus eryngii, and Pleurotus ostreatus—were investigated. For determination of antimicrobial activities of these mushrooms, ethanol extracts were examined with 11 test microorganisms by the agar well diffusion method. P. ostreatus and M. giganteus were the most active species against both bacteria and yeast. Antioxidant properties of ethanol extracts were studied by the 1,1-diphenyl-2-picrylhydrazyl free radical scavenging method. Among the mushroom extracts, M. elata showed the most potent radical scavenging activity. This research has shown that these 10 wild macrofungi have potential as natural antioxidants and antibiotics.
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