Physicochemical Properties and Microbial Quality of Tremella aurantialba Packed in Antimicrobial Composite Films.
The effects of poly(lactic acid) (PLA)-based film with inorganic antimicrobial nano-TiO₂ and nano-Ag on the physicochemical and microbial quality ofTremella aurantialbastored 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. AlthoughTremella aurantialbapacked 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 aurantialbapacked 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 ofTremella aurantialbathan the other three groups. The overall acceptability ofTremella aurantialbapacked 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 ofTremella aurantialbaand extend its postharvest life.
Institute of Yunnan Food Safety, Kunming University of Science and Technology, Kunming 650550, Yunnan, China. fanj333@163.com.
Jian
J
Fan
Institute of Yunnan Food Safety, Kunming University of Science and Technology, Kunming 650550, Yunnan, China. 18487262163@163.com.
Zhuangzhuang
Z
Chu
College of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, Guangdong, China. felinli@scut.edu.cn.
Lin
L
Li
Institute of Yunnan Food Safety, Kunming University of Science and Technology, Kunming 650550, Yunnan, China. food363@163.com.
Tianrui
T
Zhao
Institute of Yunnan Food Safety, Kunming University of Science and Technology, Kunming 650550, Yunnan, China. m18468259476@163.com.
Min
M
Yin
Institute of Yunnan Food Safety, Kunming University of Science and Technology, Kunming 650550, Yunnan, China. rabbqy@163.com.
Yuyue
Y
Qin
D001487:Basidiomycota / Q000737:chemistry*; D018857:Food Packaging; D063427:Food Quality
Tremella aurantialba; microbial quality; nano-Ag; nano-TiO2; physicochemical quality; poly(lactic acid)