Zhilu Ai

Prof. Dr. Zhilu Ai


Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 October 2016 in Journal of the Science of Food and Agriculture
Verified
Journal Article
Closed access
PDF file
BSBiao Suo
Biao Suo
HLHuarong Li
Huarong Li
YWYuexia Wang
Yuexia Wang
ZLZhen Li
Zhen Li
ZPZhili Pan
Zhili Pan
ZAZhilu Ai
Zhilu Ai

1 March 2024 in Food Research International
Verified
Journal Article
Closed access
NTNing Tang
Ning Tang
XXXiaolong Xing
Xiaolong Xing
HLHuipin Li
Huipin Li
BSBiao Suo
Biao Suo
YWYuhong Wang
Yuhong Wang
YYYong Yang
Yong Yang

23 December 2019 in Journal of Food Science and Technology
Verified
Journal Article
Closed access
PDF file
ZPZhili Pan
Zhili Pan
ZHZhongmin Huang
Zhongmin Huang
JMJingyi Ma
Jingyi Ma
MLMengmeng Lei
Mengmeng Lei
PTPingping Tian
Pingping Tian
ZAZhilu Ai
Zhilu Ai

1 July 2020 in Food Research International
Verified
Journal Article
Closed access
XXXiaolong Xing
Xiaolong Xing
JMJingyi Ma
Jingyi Ma
ZFZhongjun Fu
Zhongjun Fu
YZYirui Zhao
Yirui Zhao
ZAZhilu Ai
Zhilu Ai
BSBiao Suo
Biao Suo

22 March 2023 in Food Chemistry
Verified
Journal Article
Closed access
ZLZhen Li
Zhen Li
WGWenqian Gao
Wenqian Gao
JLJingjing Liang
Jingjing Liang
HFHuiping Fan
Huiping Fan
YYYong Yang
Yong Yang
ZAZhilu Ai
Zhilu Ai

3 May 2018 in Frontiers in Microbiology
Verified
Journal Article
Open access
PDF file
BSBiao Suo
Biao Suo
HYHua Yang
Hua Yang
YWYuexia Wang
Yuexia Wang
HLHaipeng Lv
Haipeng Lv
ZLZhen Li
Zhen Li
ZAZhilu Ai
Zhilu Ai
When frozen, Staphylococcus aureus survives in a sublethally injured state. However, S. aureus can recover at a suitable temperature, which poses a threat to food safety. To elucidate the resuscitation mechanism of freezing survived S. aureus, we used cells stored at -18°C for 90 days as controls. After resuscitating the survived cells at 37°C, the viable cell numbers were determined on tryptic soy agar with 0.6% yeast extract (TSAYE), and the non-injured-cell numbers were determined on TSAYE supplemented with 10% NaCl. The results showed that the total viable cell number did not increase within the first 3 h of resuscitation, but the osmotic regulation ability of freezing survived cells gradually recovered to the level of healthy cells, which was evidenced by the lack of difference between the two samples seen by differential cell enumeration. Scanning electron microscopy (SEM) showed that, compared to late exponential stage cells, some frozen survived cells underwent splitting and cell lysis due to deep distortion and membrane rupture. Transmission electron microscopy (TEM) showed that, in most of the frozen survived cells, the nucleoids (low electronic density area) were loose, and the cytoplasmic matrices (high electronic density area) were sparse. Additionally, a gap was seen to form between the cytoplasmic membranes and the cell walls in the frozen survived cells. The morphological changes were restored when the survived cells were resuscitated at 37°C. We also analyzed the differential proteome after resuscitation using non-labeled high-performance liquid chromatography–mass spectrometry (HPLC-MS). The results showed that, compared with freezing survived S. aureus cells, the cells resuscitated for 1 h had 45 upregulated and 73 downregulated proteins. The differentially expressed proteins were functionally categorized by gene ontology enrichment, KEGG pathway, and STRING analyses. Cell membrane synthesis-related proteins, oxidative stress resistance-related proteins, metabolism-related proteins, and virulence factors exhibited distinct expression patterns during resuscitation. These findings have implications in the understanding of the resuscitation mechanism of freezing survived S. aureus, which may facilitate the development of novel technologies for improved detection and control of foodborne pathogens in frozen food.