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UV‐shielding antimicrobial zein films blended with essential oils for active food packaging
Author(s) -
Kaur Manjot,
Santhiya Deenan
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49832
Subject(s) - glass transition , food spoilage , active packaging , transmittance , materials science , ultimate tensile strength , food packaging , glycerol , electromagnetic shielding , antimicrobial , composite material , chemical engineering , food science , chemistry , polymer , organic chemistry , optoelectronics , engineering , biology , bacteria , genetics
A comprehensive study on zein film blended with glycerol and essential oils (EOs) is presented in this work. In particular, ultra violet (UV) shielding property and antimicrobial efficacy of developed active zein films (ZF) are tested. The fabricated films show zero transmittance in the UV region as compare to commercial poly‐film which shows 40%–80% of UV transmittance. Results show that films are effective against spoilage microorganisms. The incorporation of EOs in ZF significantly reduces the growth of microbes over fruit samples since day 3. Physical interactions existing between EOs along with glycerol and zein provide considerable barrier properties. The glass transition temperature of the film comes out to be 47.7°C having the tensile strength of 1.21 ± 0.05 MPa. TGA curves show major weight loss in the range of 220–375°C. In conclusion, edible active ZF can be used as healthy packages over food and drug to increase their shelf life.