فهرست مطالب
عنوان |
صفحه |
فهرست جدولها د
فهرست شکلها ه
فصل اول: نظری… 1
1-1 مقدمه. 2
1-2 بستهبندی ضد باکتری.. 2
1-2-1 ساز و کار عملکرد ضد باکتری عصارهها 3
1-2-1-1 انواع باکتری.. 4
1-2-2 عصاره پوست پرتقال.. 5
1-3 بستهبندیهای زیستی ضد باکتری.. 5
1-3-1 پروتئین آب پنیر. 6
1-3-2 ژلاتین.. 8
1-3-3 تری پلی فسفات… 9
1-3-4 نانورس…. 9
1-4 مروری بر ادبیات تحقیق… 9
1-4-1 فیلمهای بر پایه پروتئین آب پنیر. 9
1-4-2 فیلمهای بر پایه پروتئین آب پنیر/ نانورس…. 10
1-4-3 فیلمهای ضد باکتری بر پایه پروتئین آب پنیر. 12
1-5 مساله تحقیق.. 13
1-6 فرضیه و رویکرد. 14
فصل دوم: تجربی… 15
2-1 مواد. 16
2-2 تجهیزات… 17
2-3 روشها 18
2-3-1تهیه نمونهها 18
2-3-2آزمونهای تعیین ریزساختار 23
2-3-2-1آزمون پراش پرتو ایکس…. 23
2-3-2-2 آزمون طیف نمایی مادون قرمز تبدیل فوریه. 23
2-3-3آزمونهای تعیین خواص فیزیکی و مکانیکی.. 23
2-3-3-1 آزمون اندازهگیری ضخامت… 23
2-3-3-2 آزمون کشش…. 24
2-3-3-3 آزمون اسپکتروفوتومتری.. 24
2-3-3-4 آزمون نفوذپذیری رطوبت… 24
2-3-3-5 آزمون جذب رطوبت… 25
2-3-3-6 آزمون انحلالپذیری.. 25
2-3-3-7 آزمون اندازهگیری محتوای رطوبت… 25
2-3-4آزمونهای زیستی.. 26
2-3-4-1 آزمون بررسی خاصیت ضد باکتری به روش ( AATCC 100) 26
2-3-4-2 آزمون زیستتخریبپذیری.. 27
2-3-4-3 اندازهگیری pH… 27
2-3-4-4 تحلیل آماری.. 27
فصل سوم: نتایج و بحث…. 28
3-1 مقدمه. 29
3-2 تهیه آمیخته پروتئین آب پنیر و ژلاتین(مرحله اول) 30
3-2-1 اندازهگیری ضخامت… 30
3-2-2 خواص مکانیکی.. 30
3-3 تهیه نانوکامپوزیت با افزودن سه درصد مختلف نانورس (مرحله ب) 32
3-3-1 آزمون پراش اشعه ایکس…. 32
3-3-2 آزمون خواص مکانیکی.. 34
3-3-3 آزمون نفوذپذیری بخار آب… 35
3-3-4 آزمون جذب رطوبت… 36
3-4 تهیه نانوکامپوزیت با افزودن سه مقدار مختلف از عصاره پوست پرتقال (مرحله ج) 37
3-4-1 آزمون خواص ضد باکتری.. 37
3-4-2 آزمون خواص مکانیکی.. 39
3-4-3 آزمون طیف نمایی مادون قرمز تبدیل فوریه. 41
3-4-4 آزمون اسپکتروفوتومتری.. 42
3-4-5 آزمون انحلالپذیری.. 43
3-4-6 آزمون اندازهگیری محتوای رطوبت… 44
3-4-7 آزمون سنجش pH… 45
3-4-8 آزمون زیستتخریبپذیری.. 46
فصل چهارم: نتیجهگیری و پیشنهادها 48
4-1 نتیجهگیری.. 49
4-2 پیشنهادها 51
مراجع.. 52
پیوستها 56
واژهنامه. 69
فهرست جدولها
عنوان صفحه |
جدول 1‑1 ویژگیهای لیمونن.. 5
جدول 1‑ 2 ترکیب آمینو اسیدی کلاژن و ژلاتین.. 8
جدول 2‑1 خصوصیات مواد مورد استفاده در مراحل آزمایشگاهی. 16
جدول 2‑2 تجهیزات استفاده شده برای انجام آزمایشها. 17
جدول 2‑3 نام و خصوصیات نمونههای تهیه شده در مراحل مختلف آزمایش. 19
جدول 2‑4 فرایندهای متفاوت برای بهدستآوردن نمونه نانوکامپوزیت. 20
جدول 3‑1 اثر افزودن نانورس بر خواص مکانیکی. 35
جدول 3‑2 نفوذپذیری بخار آب در پژوهش حاضر و مراجع. 36
جدول 3‑3 درصد جذب رطوبت در نمونههای دارای نانورس…. 37
جدول 3‑4 خواص ضد باکتری نانوکامپوزیتهای دارای عصاره پوست پرتقال.. 38
جدول 3‑5 مقایسه شفافیت در پژوهش حاضر و مراجع.. 43
جدول 3‑6 درصد انحلالپذیری در آب همه نمونههای فیلم خوراکی.. 44
جدول 3‑7 محتوای رطوبت نانوکامپوزیتهای دارای عصاره پوست پرتقال.. 45
جدول 3‑8 pH نمونههای دارای عصاره پوست پرتقال. 45
جدول 3‑9 کاهش وزن نمونه WGN5. 46
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