PMID- 36746436 OWN - NLM STAT- MEDLINE DCOM- 20230316 LR - 20230316 IS - 1365-2672 (Electronic) IS - 1364-5072 (Linking) VI - 134 IP - 3 DP - 2023 Mar 1 TI - Respiratory depression driven by membrane damage as a mechanism for linalool to inhibit Pseudomonas lundensis and its preservation potential for beef. LID - lxad023 [pii] LID - 10.1093/jambio/lxad023 [doi] AB - AIMS: This study aimed to investigate the mechanism of linalool against Pseudomonas lundensis and its application on beef. METHODS AND RESULTS: Field emission scanning electron microscopy found that linalool exerted antibacterial activity with a minimum inhibitory concentration (MIC) of 1.5 ml l-1 by disrupting cell structure. Loss of cell membrane integrity was monitored due to leakage of nucleic acids and K+. In addition, respiratory depression appeared in Ps. lundensis based on inhibition of enzyme activities including hexokinase (HK), glucose 6-phosphate dehydrogenase (G6PDH), phosphofructokinase (PFK), pyruvate kinase (PK), pyruvate dehydrogenase (PDH), citrate synthase (CS), succinate dehydrogenase (SDH), and malate dehydrogenase (MDH). Subsequently, energy limitation also occurred according to the decrease in ATP content and ATPase activity. Molecular docking confirmed that linalool can combine with enzymes in cell wall (ddlB) and energy synthesis (AtpD) pathways to exert antibacterial effect. Of note, linalool has advantages for beef preservation by delaying quality changes including pH, total volatile basic nitrogen (TVB-N) and total viable count (TVC). CONCLUSIONS: Linalool has significant inhibitory effect on Ps. lundensis, and respiratory depression driven by membrane damage is the main inhibitory mechanism. CI - (c) The Author(s) 2023. Published by Oxford University Press on behalf of Applied Microbiology International. FAU - He, Rongrong AU - He R AD - Hainan University-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 People Road, Haikou 570228, PR China. FAU - Chen, Haiming AU - Chen H AD - Hainan University-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 People Road, Haikou 570228, PR China. FAU - Chen, Weijun AU - Chen W AD - Hainan University-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 People Road, Haikou 570228, PR China. AD - Chunguang Agro-product Processing Institute, Wenchang 571333, China. FAU - Zhang, Ming AU - Zhang M AD - Hainan University-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 People Road, Haikou 570228, PR China. FAU - Pei, Jianfei AU - Pei J AD - Hainan University-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 People Road, Haikou 570228, PR China. FAU - Chen, Wenxue AU - Chen W AD - Hainan University-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 People Road, Haikou 570228, PR China. FAU - Zhong, Qiuping AU - Zhong Q AD - Hainan University-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 People Road, Haikou 570228, PR China. LA - eng GR - 32160591/Natural Science Foundation of China/ GR - 320RC515/Hainan Provincial Natural Science Foundation of China/ PT - Journal Article PL - England TA - J Appl Microbiol JT - Journal of applied microbiology JID - 9706280 RN - D81QY6I88E (linalool) RN - 0 (Anti-Bacterial Agents) RN - Pseudomonas lundensis SB - IM MH - Animals MH - Cattle MH - Molecular Docking Simulation MH - *Anti-Bacterial Agents/pharmacology MH - *Respiratory Insufficiency OTO - NOTNLM OT - Pseudomonas lundensis OT - ATP OT - beef OT - enzyme activity OT - linalool OT - molecular docking EDAT- 2023/02/07 06:00 MHDA- 2023/03/17 06:00 CRDT- 2023/02/06 20:13 PHST- 2022/11/01 00:00 [received] PHST- 2023/01/11 00:00 [revised] PHST- 2023/02/05 00:00 [accepted] PHST- 2023/02/07 06:00 [pubmed] PHST- 2023/03/17 06:00 [medline] PHST- 2023/02/06 20:13 [entrez] AID - 7028771 [pii] AID - 10.1093/jambio/lxad023 [doi] PST - ppublish SO - J Appl Microbiol. 2023 Mar 1;134(3):lxad023. doi: 10.1093/jambio/lxad023.