Effects of antimicrobial nanocomposite films packaging on the postharvest quality and spoilage bacterial communities of mushrooms (Chanterelles)

Kai Jiang; Bifen Zhu; Yudi Liu; Haiyan Chen; Mingwei Yuan; Yuyue Qin; Margaret Brennan; Charles Brennan

doi:10.1016/j.fochx.2023.100996

Effects of antimicrobial nanocomposite films packaging on the postharvest quality and spoilage bacterial communities of mushrooms (Chanterelles)

Food Chem X. 2023 Nov 10:20:100996. doi: 10.1016/j.fochx.2023.100996. eCollection 2023 Dec 30.

Authors

Kai Jiang¹, Bifen Zhu¹, Yudi Liu¹, Haiyan Chen¹, Mingwei Yuan², Yuyue Qin¹, Margaret Brennan³, Charles Brennan³

Affiliations

¹ Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650550, China.
² Green Preparation Technology of Biobased Materials National & Local Joint Engineering Research Center, Yunnan Minzu University, Kunming 650500, China.
³ School of Science, Royal Melbourne Institute of Technology University, Melbourne 3000, Australia.

Abstract

Poly (lactic acid) (PLA) composite films with the addition of mesoporous silica nanoparticles MSN (0, 2, 4 and 6 wt%) loaded with 10 wt% citral (CIT) were prepared for application in Chanterelles packaging. Composite films with added MSN/CIT showed good mechanical properties, especially 4MSN/CIT/PLA. Changes in physicochemical properties and bacterial flora of Chanterelles during packaging and storage were tested. Compared with CIT/PLA, Chanterelles packed with 4MSN/CIT/PLA showed about 1.62-times lower browning value, 1.53-times lower electrolyte permeability, and 1.83- and 1.78-times lower PPO and POD, respectively, at 12 day. Better physicochemical properties of Chanterelles can be maintained. For bacterial flora changes, Chanterelles packaged with 4MSN/CIT/PLA had more stable flora (p < 0.05) and lower species diversity during storage (p < 0.05), effectively controlling the growth and reproduction of their dominant spoilage bacteria (Enterobacteriaceae spp). In conclusion, the composite membranes obtained by the addition of MSN/CIT to PLA have great potential in the storage of Chanterelles.

Keywords: Bacterial flora changes; Chanterelles; Citral essential oil; Mesoporous nanosilica; Preservation.