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الموضوع: هام جدااااااااااااااا

  1. #1
    Pharma Student
    تاريخ التسجيل
    Feb 2008
    الدولة
    المحله الكبرى
    المشاركات
    156

    Thumbs up هام جدااااااااااااااا

    ازيكوا يا دكاترة اولا
    اخبار بحث الابليد ايييييييييييييييييه
    انا البحث بتاعى عن chemical tests of bogbean
    وللاسف مش لاقيه حاجه خااااااااااااااااااااااالص اعمل اييييييييييييه

  2. #2
    Pharma Student
    تاريخ التسجيل
    Feb 2009
    الدولة
    Mansoura
    المشاركات
    228

    افتراضي

    IDENTIFICATION
    Thin layer chromatography).
    Test solution. Mother tincture.
    Reference solution. Dissolve 5 mg of loganine R and 5 mg of catalpol R in 15 mL of methanol R.
    Plate: TLC silica gel plate R.
    Mobile phase: water R, methanol R, ethyl acetate R (8:15:77 V/V/V).
    Application: 30 μL, as bands.
    Development: over a path of 15 cm.
    Drying: in air.
    Detection: spray with vanillin reagent R. Heat at 100-105 °C for 10 min. Examine in daylight.
    Results: see below the sequence of zones present in the chromatograms obtained with the
    reference solution and the test solution. Furthermore other faint zones may be present in the
    chromatogram obtained with the test solution.

    ---------- Post added at 03:48 PM ---------- Previous post was at 03:46 PM ----------

    اقتباس المشاركة الأصلية كتبت بواسطة sara yousif مشاهدة المشاركة
    ازيكوا يا دكاترة اولا
    اخبار بحث الابليد ايييييييييييييييييه
    انا البحث بتاعى عن chemical tests of bogbean
    وللاسف مش لاقيه حاجه خااااااااااااااااااااااالص اعمل اييييييييييييه
    ASSAY
    Ultraviolet and visible absorption spectrophotometry (2.2.25).
    Test solution. In a 100.0 mL volumetric flask, place 5.000 g of mother tincture accurately weighed
    and dilute with methanol R. In a round-bottomed flask, place 1.0 mL of this solution and evaporate
    to dryness, under reduced pressure. Dissolve in 5.0 mL of a solution obtained with a mixture of 0.5
    mL of a solution of ferric chloride (10 per cent m/V) R and 100 mL of sulfuric acid (50 per cent V/V)
    R. Heat on a water-bath at 80 °C for 3 min so the coloration can develop.
    Reference solution. In a 10.0 mL volumetric flask, place 2.0 mg of catalpol R accurately weighed
    and dilute with methanol R. In a round-bottomed flask, place 1.0 mL of this solution and evaporate
    to dryness under reduced pressure. Dissolve in 5.0 mL of a solution obtained with a mixture of 0.5
    mL of a solution of ferric chloride (10 per cent m/V) R and 100 mL of sulfuric acid (50 per cent V/V)
    R. Heat on a water-bath at 80 °C for 3 min so the coloration can develop.
    Compensation liquid. In a round-bottomed flask, place 1.0 mL of methanol R and evaporate to
    dryness. Dissolve in 5.0 mL of a solution obtained with a mixture of 0.5 mL of a solution of ferric
    chloride (10 per cent m/V) R and 100 mL of sulfuric acid (50 per cent V/V) R. Heat on a water-bath
    at 80 °C for 3 min so the coloration can develop.
    Measure the absorbance of the test solution and the reference solution at 411 nm in comparison
    with the compensation liquid.
    Calculate the percentage content m/m of total iridoids, expressed as catalpol from the expression:

    ---------- Post added at 03:51 PM ---------- Previous post was at 03:48 PM ----------

    http://ansm.sante.fr/var/ansm_site/s...a3bd1d1073.pdf

  3. #3
    Pharma Student
    تاريخ التسجيل
    Feb 2008
    الدولة
    المحله الكبرى
    المشاركات
    156

    افتراضي

    شكرا اوووووووووووووووووووووووى
    مش عارفه اشكرك ازاى

  4. #4
    Pharma Student
    تاريخ التسجيل
    Sep 2009
    المشاركات
    23

    افتراضي

    انا البجث بتاعي عن
    proximate analysis (ash value (total ash, acid insoluble ash,water soluble ash),extractive values and
    moisture content (loss drying
    لل parsley piert ومش لاقية حاجة خالص مش عارفة اعمل ايه حد يساعدني بليز :fop10

  5. #5
    Pharma Student
    تاريخ التسجيل
    Feb 2009
    الدولة
    Mansoura
    المشاركات
    228

    افتراضي

    Ash value:

    Ash remaining following ignition of medicinal plant

    Total ash: Not more than 13.0 per cent
    .
    Acid insoluble ash: not more than 5.3%

    Water soluble ash: not more than 6.3%


    ---------- Post added at 06:39 PM ---------- Previous post was at 06:31 PM ----------

    Moisture content(loss on drying):about 65% content of moisture

    ---------- Post added at 06:42 PM ---------- Previous post was at 06:39 PM ----------

    Extractive value: It contains not less than 2.1 per cent of parsley piert principle

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