کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8327176 | 1540199 | 2018 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biodegradable κ-carrageenan/nanoclay nanocomposite films containing Rosmarinus officinalis L. extract for improved strength and antibacterial performance
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, biodegradable κ-carrageenan films containing 3% nanoclay and different amounts of rosemary extract (1, 2 and 3% v/v) were fabricated and their physical, thermal, and mechanical properties, as well as antimicrobial activity were examined. The film thickness did not change significantly by the addition of rosemary extract. UV light transmission value in the control film was 20.46%, while the value for the film with 3% v/v rosmary extract reduced to 0.13%. Elongation at break (EB%) and tensile strength (TS) of the carrageenan film without the extract were 19.07% and 15.96 MPa, respectively, while after adding 3% v/v of rosemary extract, the EB and TS were increased to 27.17% and 30.77 MPa, respectively. Incorporation of rosemary extract greatly reduced water vapor permeability (WVP) (5.27 Ã 10â10 g/m·s·Pa in control film vs 2.14 Ã 10â10 g/m·s·Pa in the film containing 3% v/v rosemary extract). More importantly, the carrageenan film with 3% extract displayed >99% inhibition against B. cereus, E. coli, P. aeruginosa, and S. aureus compared with the control film. The present study showed that rosemary extract is an excellent additive to enhance the mechanical strength and antibacterial activity of carrageenan films and can be used for active packing in food packing industry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 115, August 2018, Pages 227-235
Journal: International Journal of Biological Macromolecules - Volume 115, August 2018, Pages 227-235
نویسندگان
Afsaneh Nouri, Mohammad Tavakkoli Yaraki, Mohammad Ghorbanpour, Shaobin Wang,