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Molecules 2017, 22(3), 500; doi:10.3390/molecules22030500

Physicochemical Properties and Microbial Quality of Tremella aurantialba Packed in Antimicrobial Composite Films

1
Institute of Yunnan Food Safety, Kunming University of Science and Technology, Kunming 650550, Yunnan, China
2
College of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, Guangdong, China
*
Author to whom correspondence should be addressed.
Academic Editor: Didier Astruc
Received: 4 January 2017 / Revised: 8 March 2017 / Accepted: 16 March 2017 / Published: 22 March 2017
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Abstract

The effects of poly(lactic acid) (PLA)-based film with inorganic antimicrobial nano-TiO2 and nano-Ag on the physicochemical and microbial quality of Tremella aurantialba stored at 4 ± 1 °C for 16 days was investigated. Rosemary essential oil (REO, 9 wt %) was added into PLA film as plasticizer. Low-density polyethylene (LDPE) and PLA film was used as the controls. The experiment measured physicochemical properties and microbial levels, such as weight loss, firmness, vitamin C, color, microbiological quality, and sensory quality. Although Tremella aurantialba packed by nano-composite films had the highest weight loss (4.96% and 5.17%) at the end of storage, it was still in the vicinity of 5%. Tremella aurantialba packed with nano-composite films were significantly (p < 0.05) firmer than those packed by LDPE, PLA, and PLA/REO films. The nano-composite films were more effective in reducing vitamin C and microbial counts and preserving the color of Tremella aurantialba than the other three groups. The overall acceptability of Tremella aurantialba packed by the nano-composite films still remained good and within the limits of marketability after 12 days of storage. The results suggested that the proposed nano-composite films could maintain the quality of Tremella aurantialba and extend its postharvest life. View Full-Text
Keywords: poly(lactic acid); nano-TiO2; nano-Ag; Tremella aurantialba; physicochemical quality; microbial quality poly(lactic acid); nano-TiO2; nano-Ag; Tremella aurantialba; physicochemical quality; microbial quality
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fan, J.; Chu, Z.; Li, L.; Zhao, T.; Yin, M.; Qin, Y. Physicochemical Properties and Microbial Quality of Tremella aurantialba Packed in Antimicrobial Composite Films. Molecules 2017, 22, 500.

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