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    Analysis of seed and flower oil of Melia azedaracht L. and the evaluation efficacy in inhibition of growth some fungi on artificial media

    تحليل زيت بذور الأزدرخت و أزهارها .L azedaracht Melia و تقييم كفاءتها في تثبيط نمو الفطريات على الوسط المغذي

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     Added by Damascus University ورقة بحثية
     Publication date 2013
      fields Plant Protecion
    and research's language is العربية
     Created by Shamra Editor


    ‎Shamra Academia - شمرا أكاديميا‎


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    Abstract in Arabic Abstract in English

    The investigation was carried out during 2011-2012 at the laboratories of Plant Protection Dep., Faculty of Agriculture, and Chemistry Dep., Damascus University. The fatty acid composition in the seed and flower of Chinaberry (Melia azedaracht L.) was studied by Gas Chromatography. Results showed that four fatty acids with different rate in seed and flowers of Chinaberry. The ratio of unsaturated fatty acid was highly in dry and fresh seed oil and reached 88.66% and 85.43%, respectively. Where the percentage of linoleic acid was higher than oleic acid. The percentage of saturated fatty acids was highly in oil flowers (39.97%), where the ratio of stearic acid was the highest followed by palmitic acid. Tthe efficacy of oil extract of dry, fresh seed and flowers Chinaberry for suppressing the growth of the fungi, Penicillium digitatum and Botrytis cinerea on artificial media in comparison with standard fungicides, benomyl and procymidone under laboratory condition was also evaluated.

    Artificial intelligence review:
    Research summary
    أجريت الدراسة في جامعة دمشق خلال عامي 2011 و2012 لتحليل زيت بذور وأزهار شجرة الأزدرخت (Melia azedarach L.) وتقييم كفاءتها في تثبيط نمو الفطريات. باستخدام الكروماتوغرافيا القازية، تم تحديد نسب الحموض الدسمة في الزيت المستخلص من البذور الجافة والخضراء والأزهار. أظهرت النتائج وجود أربعة حموض دسمة بنسب مختلفة، حيث كانت نسبة الحموض غير المشبعة مرتفعة في البذور الجافة والخضراء، بينما كانت نسبة الحموض المشبعة مرتفعة في زيت الأزهار. تم اختبار فعالية المستخلصات الزيتية في تثبيط نمو الفطريات Penicillium digitatum وBotrytis cinerea على الوسط المغذي PDA، وتمت مقارنتها بالمبيدات الفطرية القياسية. أظهرت النتائج أن المستخلصات الزيتية للبذور الجافة كانت الأكثر فعالية في تثبيط نمو الفطريات، بينما كانت المستخلصات الزيتية للأزهار أقل فعالية. كما أظهرت المبيدات الفطرية فعالية أكبر في تثبيط نمو الفطريات مقارنة بالمستخلصات النباتية.
    Critical review
    دراسة نقدية: على الرغم من أن الدراسة تقدم معلومات قيمة حول فعالية مستخلصات زيت الأزدرخت في تثبيط نمو الفطريات، إلا أنها تفتقر إلى توضيح الآليات الكيميائية الدقيقة التي تؤدي إلى هذا التأثير. كما أن الدراسة اقتصرت على بيئة المختبر ولم تتناول تأثير هذه المستخلصات في الظروف الحقلية أو التجارية. بالإضافة إلى ذلك، لم يتم التطرق إلى الآثار الجانبية المحتملة لاستخدام هذه المستخلصات على البيئة أو الصحة العامة. كان من الأفضل تضمين تجارب ميدانية وتقييم شامل للآثار البيئية والصحية.
    Questions related to the research
    1. ما هي النسبة المئوية للحموض غير المشبعة في زيت بذور الأزدرخت الجافة؟

      النسبة المئوية للحموض غير المشبعة في زيت بذور الأزدرخت الجافة هي 88.66%.

    2. ما هو الفطر الذي تم تثبيط نموه تمامًا عند استخدام تركيز 300 جزء بالمليون من مستخلص البذور الجافة؟

      الفطر الذي تم تثبيط نموه تمامًا عند استخدام تركيز 300 جزء بالمليون من مستخلص البذور الجافة هو Botrytis cinerea.

    3. ما هي المبيدات الفطرية القياسية التي تم استخدامها في الدراسة للمقارنة؟

      المبيدات الفطرية القياسية التي تم استخدامها في الدراسة هي benomyl وprocymidone.

    4. ما هي النسبة المئوية لتثبيط نمو الفطر P. digitatum عند استخدام تركيز 500 جزء بالمليون من مستخلص الأزهار؟

      النسبة المئوية لتثبيط نمو الفطر P. digitatum عند استخدام تركيز 500 جزء بالمليون من مستخلص الأزهار هي 70%.

    Keywords
    زيت الأزدرخت الحموض الدسمة تثبيط الفطريات Penicillium digitatum Botrytis cinerea المبيدات الفطرية الكروماتوغرافيا القازية
    References used
    AACC. 1987. Approved methods of the AACC. American Association of Chemists Inc, St Paul, MN, USA. Academic Food Journal,9 (2) :13-18
    AOAC. 1990. Official methods of analysis . Association of Official Analytical Cereal Chemists, Washington, D.C, USA
    Agrios, G.N. 2005. Plant Pathology.fifth Edition. New York, USA. : 948 Anonymous. 1998. Pesticide consequences of antibiotic use Agriculture, Science 279: 996-997
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