Preparation of an Amidated Graphene Oxide/Sulfonated Poly Ether Ether Ketone (AGO/SPEEK) Modified Atmosphere Packaging for the Storage of Cherry Tomatoes

Overview

Journal Foods

Specialty Biotechnology

Date 2021 Apr 3

PMID 33800032

Authors

Yao Cheng

Hao Dong

Yuanyue Wu

Kaijun Xiao

Affiliations

Soon will be listed here.

Abstract

The shelf life of cherry tomatoes is short so that new and efficient preservation techniques or procedures are required to reduce postharvest losses. This study focused on the development of a sulfonated poly ether ether ketone (SPEEK) film incorporated with amidated graphene oxide (AGO), for the storage of cherry tomatoes in modified atmosphere packaging. The mechanical properties, gas permeability, and moisture permeability were subsequently tested. The evolution of attributes related to shelf life, such as gas composition, physicochemical properties, and sensory properties were also monitored during storage trials. AGO, as an inorganic filler, increases the thermal stability and mechanical properties of SPEEK-based films, while it reduces the water absorption, swelling rate, and moisture permeability. Importantly, all the AGO/SPEEK films exhibited enhanced gas permeability and selective permeability of CO/O relative to the SPEEK film. Moreover, 0.9% () AGO/SPEEK film showed an enhanced permeability coefficient of CO, corresponding to an increase of 50.7%. It could further improve the selective coefficient of CO/O to 67.1%. The results of preservation at 8 °C revealed that: 0.9% () AGO/SPEEK film was significantly effective at maintaining the quality and extending the shelf life of cherry tomatoes from 15 to 30 days, thereby suggesting the potential for applying AGO-incorporated SPEEK films for food packaging materials.

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