Razi Journal of Medical Sciences
مجله علوم پزشکی رازی
RJMS
Medical Sciences
http://rjms.iums.ac.ir
39
journal39
2228-7043
2228-7051
en
jalali
1392
6
1
gregorian
2013
9
1
20
111
online
1
fulltext
fa
تولید گیاهی نانو ذرات نقره توسط گیاه دارویی بومادران
Plant synthesis of silver nanoparticles by Achillea wilhelmsii Pharmaceutical plant
فیزیکپزشکی
Biophysics
پژوهشي
Research
<font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%" dir="rtl"><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">زمینه و هدف</span></b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">:
نانوتکنولوژی به علت تولید نانوذرات در اندازه، شکل، ترکیب شیمیایی و پراکنش متفاوت
و کاربردهای بسیار آنها برای بشر، حوزه تحقیقاتی جذابی به حساب میآید. ساخت، دستکاری
و استفاده از نانوذرات فلزی به علت کاهش ابعاد و در نتیجه داشتن ویژگی های حرارتی،
نوری و الکترونیکی منحصر به فرد اهمیت زیادی دارند. روشهای تولید زیستی نانوذرات نسبت
به روشهای فیزیکی و شیمیایی به دلیل کاهش هزینه انرژی و زمان اولویت دارد. این روش
نیازمند استفاده از حلالهای سمی و ماده خطرناک برای محیط زیست نیست</span><span dir="ltr"></span><span style="font-family: "Times New Roman","serif" font-size: 9pt mso-bidi-font-family: "B Mitra" mso-bidi-font-size: 10.0pt" dir="ltr"><span dir="ltr"></span>.</span><span dir="rtl"></span><span style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt"><span dir="rtl"></span> <span lang="AR-SA"><font size="2"><font face="B Mitra">تولید سبز نانوذرات روشی دوستدار طبیعت است که در آن از حلالهای طبیعی
استفاده می شود.<o:p /></font></font></span></span></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%" dir="rtl"><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">روش کار</span></b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">:
در این مطالعه از عصاره گیاه دارویی بومادران به عنوان عامل کاهنده برای تولید زیستی
نانوذرات نقره استفاده گردید. با افزودن نمک نیترات نقره با غلظت 20 میلی مولار به
عصاره، واکنش در دمای اتاق انجام و تغییر رنگ عصاره از زرد کم رنگ به سیاه نشان دهنده
تولید نانو ذرات نقره بود.</span><span lang="FA" style="font-family: "B Mitra" font-size: 13pt mso-bidi-language: FA"><o:p /></span></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%" dir="rtl"><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">یافته ها:</span></b><span lang="AR-SA" style="font-family: "B Mitra" mso-bidi-language: FA mso-ascii-font-family: Calibri mso-hansi-font-family: Calibri mso-ansi-font-size: 10.0pt"><font size="3"> </font></span><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">تشکیل
نانوذرات نقره با وجود پیک جذبی در طول موج حدود 450 نانومتر با استفاده از دستگاه
اسپکتروفوتومتری نشان داده شد. اندازه و مورفولوژی این نانوذرات تولید شده نیز توسط
میکروسکوپ الکترونی نگاره تعیین شد که شکل ذرات کروی و اندازه متوسط آن ها در حدود
110 نانومتر بود. اندازه دقیق نانو ذرات نقره و دامنه تغییرات آن توسط دستگاه تعیین
کننده اندازه ذرات (</span><span style="font-family: "Times New Roman","serif" font-size: 9pt mso-bidi-font-family: "B Mitra" mso-bidi-font-size: 10.0pt" dir="ltr">PSA</span><span dir="rtl"></span><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt"><span dir="rtl"></span>) بین 39 تا 226 نانومتر محاسبه شد.<o:p /></span></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%" dir="rtl"><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">نتیجه</span></b><b><span style="font-family: "Times New Roman","serif" font-size: 9pt mso-bidi-font-size: 10.0pt" dir="ltr"></span></b><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">گیری</span></b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">:
در این پژوهش نانوذرات نقره با روش زیستی دوستدار طبیعت و بدون استفاده از هرگونه
مواد شمیایی مضر تولید گردید.</span><b><span lang="FA" style="font-family: "B Mitra" mso-bidi-language: FA mso-ascii-font-family: Calibri mso-hansi-font-family: Calibri mso-ansi-font-size: 10.0pt"><o:p /></span></b></p><font face="Times New Roman" size="3"> </font>
<font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: inter-ideograph"><b><span style="font-family: "Times New Roman","serif" font-size: 12pt mso-bidi-language: FA">Background: </span></b><span style="font-family: "Times New Roman","serif" font-size: 12pt">Nanotechnology
is a principally attractive area of research related with production of
nanoparticles of variable sizes, shapes, chemical compositions, dispersity and
their possible application for human being benefits. Creation, manipulation and
utilization of metallic nanoparticles, because of reduction of materials
dimensions, affect the physical properties and results in displaying
extraordinary thermal, optical and electronic properties of nonmaterial. The
biological approaches to synthesis of nanoparticles are better than chemical
and physical procedures because of low energy and time expenditure. This method
requires no toxic solvents and no dangerous material for environment. Green
synthesis of nanoparticles is an eco-friendly method and uses natural solvent.</span><span style="font-size: 13pt mso-bidi-font-family: "B Mitra""><o:p /></span></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: inter-ideograph tab-stops: right 7.3pt center 265.9pt"><b><span style="font-family: "Times New Roman","serif" font-size: 12pt">Methods</span></b><span style="font-family: "Times New Roman","serif" font-size: 12pt">: In this study,<span dir="rtl"></span><span dir="rtl"><span dir="rtl"></span><font face="Times New Roman" size="3"> </font></span>the extract of </span><a href="http://www.mobot.org/mobot/research/leguide/collections/118/1931.html"><span style="color: windowtext font-family: "Times New Roman","serif" font-size: 12pt text-decoration: none text-underline: none"><u>Achillea wilhelmsii </u></span></a><span style="font-family: "Times New Roman","serif" font-size: 12pt">as the reducing
agent, is used for the biosynthesis of silver nanoparticles. By adding silver
nitrate in concentration of 20 mM to extract, the reaction did at room
temperature and the color changed from pale yellow to dark showed the silver
nanoparticles were generated<span dir="rtl"></span><span lang="AR-SA" dir="rtl"><span dir="rtl"></span><font size="3"><font face="Times New Roman">.<o:p /></font></font></span></span></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: inter-ideograph tab-stops: right 7.3pt center 265.9pt"><b><span style="font-family: "Times New Roman","serif" font-size: 12pt">Results:</span></b><span style="font-size: 10pt mso-ascii-font-family: Calibri mso-hansi-font-family: Calibri mso-bidi-font-family: "B Mitra" mso-bidi-font-size: 11.0pt"><font face="Calibri"> </font></span><span style="font-family: "Times New Roman","serif" font-size: 12pt">The formation of
silver nanoparticles was confirmed by the presence of an absorption peak at 450
nm using spectrophotometer. The size and shape of silver nanoparticles were
monitored using scanning electron microscopy that shape of particles was
spherical and average size of them was about 110 nm. Precise size and change
range of nanoparticles measured by Particle Size Analysis (PSA) between 39-226
nm.<o:p /></span></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: inter-ideograph tab-stops: right 7.3pt center 265.9pt"><b><span style="font-family: "Times New Roman","serif" font-size: 12pt">Conclusions: </span></b><span style="font-family: "Times New Roman","serif" font-size: 12pt">In this study,
silver nanoparticles were produced with an eco-friendly biologic approach and
without using any harmful chemical.<o:p /></span></p><font face="Times New Roman" size="3"> </font>
گیاهان، نانوذرات، نقره، گیاه بومادران.
plants, nanoparticles, silver, Achillea wilhelmsii
64
69
http://rjms.iums.ac.ir/browse.php?a_code=A-10-1-1450&slc_lang=fa&sid=1
Javad
Karimi
جواد
کریمی
3900319475328460023947
3900319475328460023947
No
Shiraz University
دانشگاه شیراز
Sasan
Mohsenzadeh
ساسان
محسن زاده
3900319475328460023948
3900319475328460023948
Yes
Shiraz University
دانشگاه شیراز