Cold plasma treated thyme essential oil/silk fibroin nanofibers against Salmonella Typhimurium in poultry meat
This study aims to fabricate cold plasma treated thyme essential oil (TO)/silk fibroin (SF) nanofibers to inhibit Salmonella Typhimurium in poultry meat. Firstly, antimicrobial activity and mechanism of TO against Salmonella Typhimurium was assessed. Subsequently, viscoelastic properties of spinning solutions and properties of nanofibers which included nanofibers stability, hydration, barrier and mechanical properties were studied to screen good performance nanofibers. Further, cold plasma was applied to implement the surface modification of TO/SF nanofibers. The results showed that the TO release amount of plasma-TO/SF nanofibers improved obviously after cold plasma treatment, leading to higher antibacterial activity of plasma-TO/SF nanofibers than TO/SF nanofibers. After plasma-TO/SF nanofibers treatment, the number of Salmonella Typhimurium in chicken meat and duck meat decreased by 6.1 and 6.06 Log CFU/g compared with control group at 25 °C, respectively. Overall, this study indicated that plasma-TO/SF nanofibers membrane was an effective antimicrobial packaging to increase shelf life of foods, which had a broad prospect in the field of food preservation.Graphical abstract
This study is the first to demonstrate that bacteria grown in the presence of catecholamine stress hormones alter their growth environment, probably by producing immunomodulating substances, in a way that host immune response is suppressed. These findings add a new dimension to interkingdom signaling and provide novel clues to explain the increased susceptibility of a stressed host to Salmonella infection.
Contributors : F Baron ; M F Cochet ; M Alabdeh ; S Bonnassie ; F Nau ; C Gu Ã©rin-Dubiard ; V Lechevalier ; M Gautier ; S C Andrews ; S JanSeries Type : Expression profiling by arrayOrganism : Salmonella enterica subsp. enterica serovar EnteritidisTranscriptional profiling of Salmonella Enteritidis to egg-white filtrate exposure at 45 °C for 45 min
The emergence of mcr-gene posts a serious threat to the use of colistin which is one of the last-resort treatments against human infections caused by MDR Gram-negative bacteria. In this Journal, the discovery of plasmid-mediated colistin resistance gene mcr-3 in poultry fecal samples from China live poultry markets (LPMs) has been recently reported (1, 2). Here, to the best of our knowledge, we report the first case of plasmid-borne mcr-3.1 present in an MDR Salmonella enterica serovar Choleraesuis isolate from human.
Salmonellosis is a common foodborne disease. We previously reported the protection of Caenorhabditis elegans from Salmonella Typhimurium DT104 infection by Lactobacillus zeae LB1. However, the mechanism is not fully understood. C. elegans exhibits behavior plasticity when presented with diverse pathogenic or commensal bacteria. Whether it can exert approach avoidance to S. Typhimurium through altering its neurological activity remains to be determined. In the current study, both the wild type and mutants defective in serotonin or dopamine production of C. elegans were used to investigate olfactory preference of the nematod...
This study provided evidence that SCFAs suppressSalmonella infection via inflammasome activation, shedding new light on the therapeutic activity of dietary fiber.
Publication date: Available online 25 September 2020Source: Veterinary MicrobiologyAuthor(s): Honghong Xian, Yu Yuan, Chao Yin, Zhenyu Wang, Ruoyun Ji, Chao Chu, Xinan Jiao, Qiuchun Li
Publication date: Available online 25 September 2020Source: Biochimica et Biophysica Acta (BBA) - General SubjectsAuthor(s): Troy Burtchett, Chloe Love, Reshma Sarkar, Brian C. Tripp
Have you heard the news from CDC about wood ear mushrooms?
Federal officials are warning of salmonella cases in at least 10 states linked to dried mushrooms from a Southern California company
FRIDAY, Sept. 25, 2020 -- Recalled wood ear mushrooms imported by Wismettac Asian Foods Inc., of Santa Fe Springs, California, and sold to restaurants may be linked to a multistate Salmonella outbreak, the U.S. Food and Drug Administration said...