Location: Livestock Nutrient Management ResearchTitle: Bio-based green food packing films from agricultural waste: substituting peanut shell for synthetic plastics
|NARESH, SHAHI - Tuskegee University|
|MIN, BYUNG JINE - Tuskegee University|
|RANGARI, VIJAYA - Tuskegee University|
|GURUNG, NAR - Tuskegee University|
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 2/28/2019
Publication Date: 3/30/2019
Citation: Naresh, S., Min, B., Rangari, V., Min, B., Gurung, N. 2019. Bio-based green food packing films from agricultural waste: substituting peanut shell for synthetic plastics [abstract]. Association of 1890 Research Directors (ARD) 19th Biennial Research Symposium, Jacksonville, Florida. Abstract No. 171.
Technical Abstract: In the present study, we have successfully developed natural fiber-based films with improved properties. An experiment was conducted to develop bio-composite films using peanut (Arachis hypogaea) shell and skin substituting for synthetic plastics. Cellulose was isolated from peanut shell using a fiber analyzer and synthesized as cellulose nanofibrils (CNFs) by ultrasound treatment. Condensed tannins (CTs) were extracted from peanut skin by 70% acetone. Nanocomposite films were developed using sol-gel technique. During the fabrication of films, different weight ratio of CNFs and polyvinyl alcohol (PVC) were mixed and dried at 30oC for 48 h with 52% RH. Surface morphology, mechanical properties, and antioxidant activities of the films were investigated. Smaller pore size with closely intact and smooth surface was observed from SEM images in the films incorporated with CTs. The mechanical strength of PVA/CNF/CTs composite films showed higher tensile strength (0.45 MPa) than control films (0.15 MPa). In addition, tensile strength of the films was gradually increased with the addition of CTs in polymer mixtures but decreased with increased concentration of CNFs. The percentage of radical scavenging activities of CTs (91.2%) was similar with ascorbic acid control. Interestingly, bio-composite films incorporated with CTs retained antioxidant activities. Results indicated that biomass from peanut waste could be used as an alternative substitute for synthetic plastics in the future as an eco-friendly natural food packaging material.