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    Antimicrobial Activity of Turkish Citrus Leaf Oils and Compositions of Turkish Orange and Grapefruit Leaf Oils
    (Taylor and Francis Ltd., 2012) Kirbaslar, F. Gülay; Dulger, Basaran; Turker, Gülen; Tavman, Aydin
    The samples of the Citrus leaves viz., bitter orange (Citrus aurantium L.), lemon (Citrus lemon (L.) Burin. f), mandarin (Citrus reticulata Blanco), bergamot (Citrus bergamia Risso et Poit.), orange (Citrus sinensis (L.) Osbeck), grapefruit (Citrus paradisi Macfayden), were collected from southern Turkey (Antalya) and their leaf oils were obtained by steam distillation. The compositions of orange and grapefruit leaf oils were identified. The major monoterpenes range of the orange and grapefruit leaf oils are 72.55 (sabinene: 42.85 %) and 76.45% (sabinene: 52.25 %), respectively. The antimicrobial activities of Turkish Citrus leaf oils were evaluated using the disk diffusion method toward nine bacteria and five yeasts, and the results are compared with those for antibiotics. The Citrus leaf oils showed strong antimicrobial activity against the test organisms (> 10 mm zone). All of the Citrus leaf oils are more effective towards K. fragilis (antifungal effect) than the other microorganisms. © 2012, Copyright Har Krishan Bhalla & Sons.