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Antibacterial activities of black tea alcohol ethanolic extract and some antibiotics against isolates Staphylococcus aureus and Staphylococcus epidermidis isolated from conjunctivitis.
الفعالية ضد الميكروبية لمستخلص الايثانول الكحولي للشاي الأسود وبعض المضادات الحياتية ضد عزلات Staphylococcus aureus & Staphylocccus epidermidies المعزولة من التهاب الأجفان

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Abstract

Isolation of bacterial from eye infections (conjunctivitis) was carried out in this study39 specimens (55.71%) gave positive bacterial culture from totally(70) samples. We found that staphylococcus aureus and staphylococcus epidermidis in 35.71,20% respectively from the total isolates. Antibacterial activities of the antibiotics vancomycin, oxacillin, cephalothgin chloramphenicol, tobramycin, ciprofloxacin Staph. Aureus and Staph. Epidermidis shows resistance rate about (4,12, 16, 28 , 8, 8% ) and (7,14,14.28 ,35.7,28.57,42.85,21.42%) respectively. The inhibition ability of black tea alcoholic extract against Staph. aureus and Staph. epidermidis isolates at concentration (10, 20, 40, 80, 100%) were (13,15,17,19,27) mm, (10,14,16,18,24 ) mm of inhibition zones respectively.-keywords: antibacterial activity , antibiotic, black tea, conjunctivitis.

أظهرت نتائج الزرع البكترولوجي لـ (70) عينة جمعت من حالات التهاب الأجفان التلوث ببكتريا Staph .aureus و Staph.epidermidies وبنسبة (35.71 و 20%) من المجموع الكلي للعزلات . أوضحت دراسة حساسية العزلتين Staph .aureus و Staph.epidermidies للمضادات الحياتية Vancomycin Oxacillin , Cephalothin , Chloramphenicol Ciprofloxacin , Tobramycin , chloramplenicol إن معدلات المقاومة كانت (8, 8,28, 16, 12, 4%) و ( %21. 42, 42.85,28.57,35.7,14.28,7.14) على التوالي .كما واظهر استخدام مستخلص الايثانول الكحولي للشاي الأسود بتراكيز (100,80,40,20,10)% تأثيراً وبمعدل (27,19,17,15,13) ملم و (24,18,16,14,10 ملم ) لكل من Staph.aureus و Staph.epidermidies على التوالي .

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