کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7595709 | 1492125 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Physical, mechanical and antimicrobial properties of starch films incorporated with ε-poly-l-lysine
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Physical, mechanical and antimicrobial properties of starch films incorporated with ε-poly-l-lysine Physical, mechanical and antimicrobial properties of starch films incorporated with ε-poly-l-lysine](/preview/png/7595709.png)
چکیده انگلیسی
Starch/ε-poly-l-lysine (ε-PL) composite films were prepared by combining 4% (w/v) gelatinized cornstarch and varying the level of ε-PL. The physical, mechanical and antimicrobial properties of these films were investigated. Fourier-transform infrared spectra (FT-IR) showed that the carbonyl group stretching vibration band of the ε-PL molecule shifted from 1646 cmâ1 to 1673 cmâ1 in the composite films. Differential scanning calorimetry (DSC) results indicated that there were sharp endothermal peaks at 215-230 °C for the composite films. These results indicated that there was an intense interaction between the two components. The films incorporated with ε-PL showed a higher tensile strength (TS) and elongation-at-break (E) than those of the starch film alone. These composite films exhibited effective inhibition against Escherichia coli and Bacillus subtilis, films containing 2% (w/w) ε-PL effectively suppressed the growth of the tested microbes (P < 0.05). The starch/ε-PL films showed a low inhibitory effect on Aspergillus niger. This antimicrobial trend of the composite films was in agreement with the results of free ε-PL.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 166, 1 January 2015, Pages 107-114
Journal: Food Chemistry - Volume 166, 1 January 2015, Pages 107-114
نویسندگان
Liming Zhang, Ruichao Li, Feng Dong, Aiying Tian, Zhengjun Li, Yujie Dai,