Development of Silver Nanoparticles Incorporated Antimicrobial Food Packaging Paper Derived from Corn Cob

( Vol-2,Issue-8,August 2016 )

Author(s): Amit Kumar Yadav, Dorcus Masih, Sanjeet Kumar

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Downloads : 164
Page No: 1228-1232
DOI:

Keywords:

AgNPs, Antimicrobial packaging, Bacillus subtilis, Corn cob, E. coli, Paper, Pulp.

Abstract:

Food packaging material was developed from corn cob pulp that is a potential source of non-wood fibre. Corn cob was soaked in 6% NaOH solution in the ratio of (1:6) that is 1 part grain less corn cob and 6 part NaOH solution. Alkali treatment disrupts cell-wall by dissolving hemicellulose, lignin and silica by hydrolyzing uronic and acetic acid esters and by swelling cellulose. After 24 hours the soaked mixture was taken and cooking was done at temperature of 120oC for 80 minute till gel like structure form and corn cob give paste and soapy texture like structure. After cooling washing was done to remove waste liquor that was followed by pulping to make paper.Studies have focused on developing food packaging material that is paper incorporated with silver nanoparticles in the ratio of10 mg per 100 ml of pulp. Developed paper has significantly reduced the presence of E.coli and Bacillus subtilis in wrapped food sample. The resulting pulp from corn cob was used for paper making and the papers obtained were tested for their mechanical properties; grammage (81) g/m2, thickness (0.199) mm, stiffness (65-70) Taber, tearing strength (MD 39, CD 41) mN for paper incorporated with AgNPs. Overall, antimicrobial packaging shows promise as an effective method for the inhibition of certain bacteria in foods, but barriers to their commercial implementation continue to exist.

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