Biosynthesis of CMC-Guar gum-Ag0 nanocomposites for inactivation of food pathogenic microbes and its effect on the shelf life of strawberries
| Autor: | Vimala Kanikireddy, M. Sandhya Rani, Perala Venkataswamy, Kokkarachedu Varaprasad, B. Jagan Mohan Reddy, Muga Vithal |
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| Rok vydání: | 2020 |
| Předmět: |
Guar gum
Nanocomposite Polymers and Plastics Chemistry Organic Chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Shelf life Antimicrobial 01 natural sciences Silver nanoparticle 0104 chemical sciences law.invention Carboxymethyl cellulose Magazine law Materials Chemistry Zeta potential medicine Food science 0210 nano-technology medicine.drug |
| Zdroj: | Carbohydrate Polymers. 236:116053 |
| ISSN: | 0144-8617 |
| Popis: | A few fruits have short post-harvest life due to high metabolic activity, relatively high water content vulnerability towards microbes and loss of weight during their storage. Carboxymethyl cellulose (CMC)-Guar gum-silver nanocomposite films (CG-Ag0NC) are developed to address these issues. The silver nanoparticles were generated in the CMC-Guar gum matrix through a reduction by Mentha leaves extract. All the films were characterized by UV-vis spectroscopy, FT-IR, TGA, XRD, SEM, TEM, and zeta potential measurements. The antimicrobial activity of CG and CG-Ag0NC was measured by determining their zone inhibition values with ten food pathogenic microbes. The shelf life of CG-Ag0NC films was tested with the model fruit, strawberries, and compared with other packing films. The results are encouraging in terms of freshness, shelf-life and weight loss. |
| Databáze: | OpenAIRE |
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