Mohammad Hadi Givianrad
Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
[ 1 ] - Evaluation of the antioxidant activity of Thymus Using Electrochemical Methods and radical scavenging method
Thymus is regarded as one of the medicinal species, which according to obtained chromatograms of floral water of Thymus; one of the main components is thymol as strong antioxidant. In this study the appropriate and physically powerful correlation was found between the anti-radical and oxidation potentials. The antioxidant activity of the Thymus was measured by using square wave and cyclic volta...
[ 2 ] - Antioxidant Properties of Ajwain using Square wave, Cyclic voltammetry methods and DPPH method
Ajwain is one of the medicinal plants, which the highest composition is thymol, as a strong antioxidant respect to the obtained chromatograms of GC/MS. The antioxidant activity of the Ajwain is measured by square wave voltammetry method and cyclic voltammetry method and 2, 2-Diphenyl-1-picrylhydrazyl (DPPH) method in at the specific concentrations of 1%, 1.5%, 2% and 2.5% and constant pH. The r...
[ 3 ] - شناسایی و تعیین مقدار ترکیبهای آنتیاکسیدانی روغن دانه کاپاریس اسپینوزا (Capparis spinosa L.) در ایران
این مقاله اولین مطالعه در ایران پیرامون شناسایی و تعیین کمّیت ترکیبهای دارای خواص آنتیاکسیدانی در روغن دانه گیاه غذایی و دارویی کاپاریس اسپینوزا (Capparis spinosa L.) که از منطقه دشت مغان جمعآوری شده میباشد. نتایج بدستآمده بهصورت میانگین در سه تکرار گزارش میشوند. در روغن دانه استخراج شده به روش سوکسله با استفاده از حلال هگزان درصد کل ترکیبهای غیرصابونی شونده برابر با 36/2% اندازهگیری شد...
[ 4 ] - بررسی تغییرات فصلی ترکیبهای فنولیک در چای سیاه (Camellia sinensis L.)
چای پس از آب، پرمصرفترین نوشیدنی در سراسر جهان است. ترکیبهای فنولیک 50 تا 70 درصد از عصاره آبی نوشیدنی چای را تشکیل میدهند که از مهمترین آنها میتوان به تئافلاوینها و تئاروبیجینها که تعیینکننده کیفیت چای سیاه میباشند، اشاره کرد. نوع رقم، فصل و شرایط آب و هوایی و موقعیت جغرافیایی منطقه رویش از عوامل تأثیرگذار بر کیفیت چای میباشد. در این پژوهش میزان پلیفنل کل، تئافلاوین کل، تئاروبیجین کل...
[ 5 ] - Research Article: Extraction of abscisic acid and gibberellin from Sargassum muticum (Phaeophyceae) and Gracilaria corticata (Rhodophyta) harvested from Persian Gulf
Phytohormones are present in seaweeds but little is known about occurrence and content of them in seaweeds of Persian Gulf. The aim of this study was extraction of abscisic acid and gibberellin in Sargassum muticum and Gracilaria corticata. The seaweeds were collected bimonthly over one year at Bushehr coasts, Persian Gulf, during a range of environmental conditions. We explored new HPLC method...
[ 6 ] - Determination and quantification of two regulatory phytohormones extracted from Sargassum muticum and Gracilaria corticata seaweeds in the south of Iran
In the present study, two regulatory phytohormones, abscisic acid and auxin, were extracted from two different macroalgae, Sargassum muticum and Gracilaria corticata, for the first time. Sampling was performed each month with three replicates, from Bushehr Province shores located in the north region of Persian Gulf for six alternative months. The alteration of seaweeds biomass and the probable ...
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