تاثیراسید اولئیک و موم زنبور عسل بر عملکرد فیلم های بسته بندی امولسیونی بر پایه پودر نرم گندم

نویسندگان
محبوبه کشیری
میثم دهقانی
یحیی مقصودلو
محمد قربانی
هدی شهیری طبرستانی
محبوبه حسن نیا
گروه علوم و صنایع غذایی، دانشکده صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان.
10.52547/fsct.18.118.93
چکیده
افزایش آگاهی مصرف کنندگان و از طرفی مشکلات زیست محیطی ناشی از مصرف پلاستیک سبب گسترش فناوری­های جدید با هدف بهبود خواص فیزیکی و مکانیکی فیلم­های زیستی نظیر تولید فیلم­های امولســیونی گردیده است. پودر نرم گندم محصولی حاصل از طبقه­بندی آرد تحت سیستم پنوماتیکمی­باشد . هدف از این پژوهش تولید فیلم امولسیونی بر پایه پودر نرم گندم، به‌عنوان ماده اولیه جدید و ارزان قیمت و بررسی اثر دو نوع لیپید (اسید اولئیک و موم زنبورعسل) در غلظت­های مختلف (5، 10 و 15 درصد) بر ویژگی­های فیزیکی و مکانیکی فیلم­های امولسیونی بود. نتایج این تحقیق نشان داد که با افزایش غلظت لیپید، ضخامت، کدورت و استحکام کششی افزایش هم­چنین رطوبت، کشش‌پذیری و حلالیت در برابر آب نسبت به فیلم شاهد کاهش یافت. مقایسه تاثیر غلظت دو نوع لیپید نشان داد که افزایش غلظت موم زنبورعسل در مقایسه با اسید اولئیک تاثیر بیشتری بر افزایش کدورت فیلم امولسیون داشت. نفوذ­پذیری نسبت به بخار آب فیلم امولسیونی حاوی 5 درصد اسید اولئیک (gm-1s-1Pa-110-10×82/1) در مقایسه با فیلم حاوی موم زنبورعسل در غلظت مشابه (gm-1s-1Pa-110-10×30/2) کم­تر بود. هم­چنین تصاویر میکروسکوپ الکترونی نشان داد سطح فیلم حاوی اسید اولئیک 10 درصد، در مقایسه با نمونه شاهد سطحی صاف­تر و یکنواخت با منافذ کوچک­تر بود که تایید کننده نتایج نفوذپذیری نسبت بخار آب بود. نتایج این تحقیق بیانگر قابلیت خوب پودر نرم گندم در تهیه فیلم امولسیونی حاوی لیپید اسید اولئیک و موم زنبور عسل جهت استفاده در بسته بندی مواد غذایی بود.
کلیدواژه‌ها
پودر نرم گندم
اسید اولئیک
موم زنبورعسل
فیلم امولسیونی

موضوعات

عنوان مقاله English

Investigation the effect of Oleic acid and Beeswax on physical and functional properties of emulsion films based on fine wheat powder

نویسندگان English

Mahboobeh Kashiri
meysam Dehghani
Yahya Maghsoudlou
Mohammad Ghorbani
Hoda Shahiri Tabarestani
mahboobeh Hassani
Department of Food Science and TechnologyGorgan University of Agricultural Sciences  and  Natural Resources
چکیده English

Fine wheat powder is a natural polymer that obtained from of pneumatic process in which light particles are not allowed to be used in bakeries despite the presence of nutrients and lead to reduced quality of flour. The purpose of this study was production of emulsion film based on wheat soft powder as a new and inexpensive raw material and investigation of two types lipids (oleic acid and beeswax) at different concentrations (5, 10 and 15%) on physical and mechanical properties of emulsion films. The results showed that by increasing lipid concentration, thickness, turbidity and tensile strength increased. But moisture decreased and elongation at break decreased as compared the control film. Comparison between the lipid concentration showed that increasing the concentration of beeswax compared to oleic acid had more effect on increasing the turbidity value of the emulsion film. Water vapor permeability of emulsion film containing 5% oleic acid (1.82×10-10 g-1m-1s-1pa-1) was lower as compared beeswax film at similar concentrations (2.30×10-10 g-1m-1s-1pa-1). In addition, scanning electron microscopy images showed the surface of 10% oleic acid film was smooth and uniform with smaller pores as compared the control sample which confirm the water vapor permeability results. The results of this study indicated the good capability of fine wheat powder in preparation of emulsion film containing oleic acid and beeswax application in food packaging.

کلیدواژه‌ها English

Fine wheat powder
Oleic acid
Beeswax
Emulsion film
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