Biosynthesis of CMC-Guar gum-Ag0 nanocomposites for inactivation of food pathogenic microbes and its effect on the shelf life of strawberries

Vimala Kanikireddy; Kokkarachedu Varaprasad; M. Sandhya Rani; P. Venkataswamy; B. Jagan Mohan Reddy; M. Vithal

doi:10.1016/j.carbpol.2020.116053

Biosynthesis of CMC-Guar gum-Ag⁰ nanocomposites for inactivation of food pathogenic microbes and its effect on the shelf life of strawberries

Vimala Kanikireddy, Kokkarachedu Varaprasad, M. Sandhya Rani, P. Venkataswamy, B. Jagan Mohan Reddy, M. Vithal^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

68 Scopus citations

Abstract

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.

Original language	English
Article number	116053
Journal	Carbohydrate Polymers
Volume	236
DOIs	https://doi.org/10.1016/j.carbpol.2020.116053
State	Published - 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

Access to Document

10.1016/j.carbpol.2020.116053

Cite this

@article{731461c45ab84fbdad3fef63bc55b624,

title = "Biosynthesis of CMC-Guar gum-Ag0 nanocomposites for inactivation of food pathogenic microbes and its effect on the shelf life of strawberries",

abstract = "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.",

keywords = "Carboxymethyl cellulose, Food pathogenic bacteria, Guar gum, Silver nanoparticles, Strawberries",

author = "Vimala Kanikireddy and Kokkarachedu Varaprasad and Rani, {M. Sandhya} and P. Venkataswamy and {Mohan Reddy}, {B. Jagan} and M. Vithal",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = may,

day = "15",

doi = "10.1016/j.carbpol.2020.116053",

language = "English",

volume = "236",

journal = "Carbohydrate Polymers",

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T1 - Biosynthesis of CMC-Guar gum-Ag0 nanocomposites for inactivation of food pathogenic microbes and its effect on the shelf life of strawberries

AU - Kanikireddy, Vimala

AU - Varaprasad, Kokkarachedu

AU - Rani, M. Sandhya

AU - Venkataswamy, P.

AU - Mohan Reddy, B. Jagan

AU - Vithal, M.

PY - 2020/5/15

Y1 - 2020/5/15

N2 - 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.

AB - 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.

KW - Carboxymethyl cellulose

KW - Food pathogenic bacteria

KW - Guar gum

KW - Silver nanoparticles

KW - Strawberries

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