فیلم زیست تخریب پذیر آلژینات سدیم/موسیلاژ دانه کتان/نوربیکسین/نانوذرات اکسید تنگستن: بررسی خواص رنگی، کریستالی، حرارتی، مکانیکی و آنتی باکتریالی

نویسندگان
حسین دادخواه 1
سجاد پیرسا 2
فروغ محترمی 2
افشین جوادی 3
1 دانشگاه آزاد اسلامی واحد ممقان، ممقان، ایران
2 گروه علوم و صنایع غذایی، دانشگاه ارومیه، ارومیه، ایران
3 گروه بهداشت مواد غذایی، واحد تبریز، دانشگاه آزاد اسلامی، تبریز، ایران
10.22034/FSCT.19.135.31
چکیده
در این تحقیق موسیلاژ دانه کتان استخراج شد. فیلم مرکب آلژینات سدیم و موسیلاژ دانه کتان تهیه شد. از رنگدانه نوربیکسین و نانوذرات اکسید تنگستن (WO3) برای اصلاح ساختار فیلم استفاده شد. خواص رنگی، کریستالی، حرارتی و مکانیکی فیلم ها بررسی شد. همچنین خاصیت ضد باکتریایی فیلم های تهیه شده نسبت به باکتری اشریشیا کلی و استافیلوکوکوس اورئوس بررسی شد. نتایج بدست آمده نشان داد فیلم خالص موسیلاژ/آلژینات شفافیت خیلی بالایی ندارد که با افزودن نانوذرات اکسید تنگستن و رنگدانه نوربیکسین شفافیت کاهش یافته است. تاثیر نانوذرات تگستن در کاهش شفافیت فیلم بیشتر از تاثیر نوربیکسین بوده است. بررسی فاکتور a (سبزی-قرمزی) نشان می دهد که با افزایش نوربیکسین و نانوذرات اکسید تنگستن این فاکتور افزایش یافته است. بررسی فاکتور b (آبی-زردی) نشان می دهد که با افزایش نوربیکسین و نانوذرات اکسید تنگستن این فاکتور افزایش یافته است. با برسی طیف XRD فیلم خالص موسیلاژ/آلژینات مشخص شد که این فیلم دو پیک پهن در 2 تتاهای 10 و 20 درجه نشان می دهد که نشان دهنده ساختار نسبتا آمورف این فیلم می باشد. در فیلم موسیلاژ/آلژینات اصلاح شده با نانوذرات اکسید تنگستن پیک های مربوط به نانوذرات کریستالی در 2 تتاهای تقریبی 25، 30، 35، 40، 50، 55 و 65 درجه کاملا مشخص هست که نشان می د هد این نانوذرات ساختار کریستالی فیلم را بهبود بخشیده است. با بررسی منحنی های TGA فیلم ها مشخص شد که نانوذرات اکسید تنگستن و نوربیکسین پایداری حرارتی فیلم را افزایش داده است. بررسی خاصیت آنتی باکتریالی فیلم ها نشان داد که افزودن نانوذرات اکسید تنگستن و رنگدانه نوربیکسین خاصیت آنتی باکتریالی فیلم را به طور معنی داری (p<0.05) افزایش داده است.
کلیدواژه‌ها
فیلم زیست تخریب پذیر
مقاومت حرارتی
مقاومت مکانیکی
پلیمرهای آنتی باکتریال و بسته بندی هوشمند

موضوعات

عنوان مقاله English

Biodegradable film of Sodium alginate film/flax seed mucilage/norbixin/tungsten oxide: investigation of color, crystalline, thermal, mechanical and antibacterial properties

نویسندگان English

Hosein Dadkhah 1
sajad pirsa 2
Forough mohtarami 2
Afshin Javadi 3
1 Mamaghan Branch, Islamic Azad University, Mamaghan, Iran
2 Department of Food Science and Technology, Faculty of Agriculture, Urmia University, Urmia, Iran
3 Department of Food hygiene, Tabriz Branch, Islamic Azad University, Tabriz, Iran
چکیده English

In this research, flax seed mucilage was extracted. Composite film of sodium alginate and flax seed mucilage was prepared. Norbixin pigment and tungsten oxide (WO3) nanoparticles were used to modify the film structure. The color, crystallite, thermal and mechanical properties of the films were investigated. Also, the antibacterial properties of the prepared films against Escherichia coli and Staphylococcus aureus bacteria were investigated. The obtained results showed that the pure alginate/mucilage film does not have very high transparency, which is reduced by adding tungsten oxide nanoparticles and norbixin pigment. The effect of tungsten oxide nanoparticles in reducing film transparency has been greater than that of Norbixin. Examining the factor a (green-red) shows that this factor has increased with the increase of Norbixin and tungsten oxide nanoparticles. Examining factor b (blue-yellow) shows that with the increase of Norbixin and tungsten oxide nanoparticles, this factor has increased. By examining the XRD spectrum of the pure alginate/mucilage film, it was found that this film showed two broad peaks at 2θ of 10° and 20°, which indicates the relatively amorphous structure of this film. In the alginate/mucilage film modified with tungsten oxide nanoparticles, the peaks related to the crystalline nanoparticles in 2θ of approximately 25, 30, 35, 40, 50, 55 and 65 degrees are quite clear, which shows that these nanoparticles improve the crystalline structure of the film. By examining the TGA curves of the films, it was found that the addition of tungsten oxide nanoparticles and norbixin pigment increased the thermal stability of the film. Examining the antibacterial property of the films showed that the addition of tungsten oxide nanoparticles and norbixin pigment increased the antibacterial property of the film significantly (p<0.05).

کلیدواژه‌ها English

Biodegradable film
Thermal resistance
Mechanical Resistance
Antibacterial polymers and Smart packaging
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