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Article
Antioxidant Activity of 2-Amino-4-(3,4- Dichlorophenyl)-5-oxo-4, 5-Dihydropyrano (3, 2-c) Chromene-3-Carbonitrile Compounds

Authors: Yasameen K. Al-Majedy --- Hiba H. Ibraheem --- Talib K. Abed --- Khalid S. Reda --- et al.
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 2 Part (C) Pages: 179-183
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

- Syntheses of coumarins, which are a structurally interestingantioxidant activity, was done in this article. The modification of 4-hydroxycoumarin by different reaction steps was done to yield targetcompounds. The structures of the synthesized compounds werecharacterized by spectroscopic methods, Infrared Spectra FT-IR and 1Hand 13C Nuclear Magnetic Resonance Spectra and elemental analysistechniques, melting point and thin layer chromatography. The antioxidantactivities of individual compounds were tested against hydrogen peroxide(H2O2) and ferric reducing antioxidant power (FRAP) and the results werecompared to the ascorbic acid and trolox as standards. The results showthat hydrogen peroxide scavenging activity of compounds 2and 3 are higherthan that of the standard, and the values are 81.1±1.0%, and 82.3±1.5%,respectively and the compounds 1 and 4show scavenging activity onhydrogen peroxide with lower value compared with ascorbic acid..

Keywords

antioxidant activity --- coumarin --- H2O2 --- FRAP.


Article
A Study of Ibn Hayan Honey Antioxidant Power
دراسة القوى المضادة للأكسدة لعسل ابن حيان

Author: Sowdani, K.M. قاسم محمد السوداني
Journal: karbala journal of pharmaceutical sciences مجلة كربلاء للعلوم الصيدلانية ISSN: 70272221 Year: 2015 Issue: 9 Pages: 1-5
Publisher: Kerbala University جامعة كربلاء

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Abstract

Reaching for a spoon of honey may do more than simply satisfy a sweet tooth; this paperlooks to compare the ferric reducing abilities of plasma (FRAP), for a 5 honey sampled fromaround the world. FRAP was found to be as follows Australian Manulka+15 > Ibn Hayan II> Ibn Hayan I > As-Sombola (KSA) > Ibn Hayan III (Iraq) > Essex-Bx (UK). The mainindicator of anti-oxidant power was the total polyphenol contents, andhydroxymethylfulfural (HMF) to test the freshness of each sample sourced. All of the honeystudied had an additive impact of the levels of anti-oxidants in blood plasma. This plasmawas collected from 25 randomly selected healthy male volunteers from Baghdad, Iraq.FRAP values were determined using different concentrations of honey samples and found tohave a positive correlation for all the honey included in this study. Interestingly, Ibn Hayan(II) demonstrated a significant difference between experimentally determined and calculatedFRAP values. This may be attributed to the possibility of excess metallic or herbalcontaminants; this seems plausible given the relative purity of its Australian counterpart,Manulka+15.

البحث هو جزء من محاولة تقييم بعض خصاص العسل العراقي المعرف تجاريا بعسل ابن حيان ببعض الانواع العالميةوالمختلفة جغرافيا. فقد تم دراسة قدرة هذه الانواع كمضادات للاكسدة بطريقة فراب ووجد ان عسل ابن حيان يقع ضمنهذة الانواع باعتماد هذه الخاصية. وقد تأكد ذلك ايضا من خلال تعيين كمية متعدد متعدد الفينولات والمعتمد كمؤشرلخاصية مضادات الاكسدة وكالتالي: عسل منوكا + 15 الاسترالي < ابن حيان 2 < ابن حيان 1 < عسل السنبلةالسعودي. < ابن حيان 3 < عسل اسكس- بي اكسوعند دراسة مدى تأثر العسل بالخزن من خلال مؤشراتش ام اف وجد ان عسل ابن حيان يحتل موفعا جيدا بالرغم منحرارة جو الخزن نسبة الى الاوربي لكن قصر فترة الخزن عوض عن ذلك. اتمدت الدراسة على اخذ عينات بلازمالثلاثين شاب بصحة جيدة من اهالي بغداد اختيروا بالطريقة العشوائية. اضهرت الدراسة ان مضادات الاكسدة الكلية تمثلناتج جمع حسابي من العسل ومضادات الاكسدة الموجودة في البلازما.

Keywords

Antioxidants --- FRAP --- Polyphenols --- HMF --- Ibn Hayan --- Manuka+15 --- plasma.

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