*2.1. Materials and Chemicals*

Cherry tomatoes were obtained from a local farm in Guangdong province, China. PP boxes (1 L) were obtained from a local store (Walmart, Guangzhou, China), with no obvious visual defects. GO was obtained from Sigma-Aldrich Corp. (Shanghai, China). PEEK (Victrex™ 450 G) was obtained from Victrex Co., Ltd. (Victrex, UK). CO2 (99.99%), O2 (99.99%), and N2 (99.99%) were obtained from Air Chemical Co., Ltd. (Guangzhou, China). All other analytical chemical reagents were achieved from Aladdin Industrial Corporation (Shanghai, China) and used as received.
