کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5762187 | 1624810 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Relationships between wheat flour baking properties and tensile characteristics of derived thermoplastic films
ترجمه فارسی عنوان
رابطه بین خواص پخت آرد گندم و ویژگی های کششی فیلم های ترموپلاستی مشتق شده
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کلمات کلیدی
هولوگرام چوپین، سختی دانه، فشار برای شکستن، ازدیاد طول در نقطه شکستن، تجزیه و تحلیل چند متغیره،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
چکیده انگلیسی
This work was aimed at defining models to explain tensile properties of thermoplastic films derived from common wheat flours as a function of source flours characteristics. A total of 26 flours, two blends from an industrial mill and 24 single-cultivar flours collected over three different years of grain production (from 2013 to 2015) and cultivar grain hardness (from soft to hard) were used in a wide range of protein content (from 9.0 to 16.2%) and values of Chopin's alveograph parameters (as indexes of gluten characteristics), i.e., P (from 27 to 160 mm), L (from 32 to 236 mm), P/L (from 0.13 to 4.44), and W (from 63 to 398). The same plasticization recipe and filming procedure was adopted for all manufactures. The maximum tensile strength (Ïmax) and the elongation at break (εmax), as well as the elastic modulus (E), stiffness (k) and energy at break (wb) of films from flours having moderate to high values of P (>60 mm), P/L (â¥0.43) and W (>170) were positively correlated to P and negatively correlated to P/L and W, with all the variables significant (p-value <0.05) and R2 = 0.72 for Ïmax, 0.62 for εmax, 0.81 for E, 0.83 for k and 0.72 for wb. The εmax of films obtained from flours having moderate to low values of P (â¤45 mm), P/L (â¤0.42) and W (â¤160) was negatively correlated to P, L and P/L, and positively correlated with W, with all the variables significant (p-value <0.05) and R2 = 0.86. On the contrary, no relationship was found for the Ïmax, as well as for E, k and wb of these films. Results encourage further research aimed at improving the robustness and reliability of models so that tensile properties of a thermoplastic film can be predicted for any given source flour.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 100, June 2017, Pages 138-145
Journal: Industrial Crops and Products - Volume 100, June 2017, Pages 138-145
نویسندگان
Paolo Benincasa, Franco Dominici, Laura Bocci, Catia Governatori, Ivan Panfili, Giacomo Tosti, Luigi Torre, Debora Puglia,