Effects of different storage temperatures on microbial spoilage and bacterial community structure of fresh beef by high-throughput sequencing technology

Abstract

Fresh beef longissimus lumborum muscle was supplied from a local abattoirs located in Chengdu, Sichuan Province, China, within 12 h after slaughter. Then the fresh beef was divided

Preparation of hybrid particles of Ag nanoparticles and eggshell calcium carbonate and their antimicrobial efficiency against beef-extracted bacteria

“…In addition, Wang et al . mentioned that Pseudomonas fragi , Myroides phaeus and Brochothrix thermosphacta were bacteria found in beef [ 51 ], and it was reported that E. coli was found in raw beef, as well [ 52 ].…”

“…The mentioned reports were in good agreement with the inhibitory effect of the hybrid particles of AgNPs/eCaCO 3 and AgNPs against bacteria extracted from beef, as shown in table 2. In addition, Wang et al mentioned that Pseudomonas fragi, Myroides phaeus and Brochothrix thermosphacta were bacteria found in beef [51], and it was reported that E. coli was found in raw beef, as well [52]. The summary of the average inhibition zone diameter with standard deviation obtained from precipitated eCaCO 3 , freshly prepared silver colloids, AgNPs/eCaCO 3 and AgNPs/CaCO 3 , against extracted bacteria from the unpacked and vacuum-packed beef versus testing concentrations are shown in table 2.…”

Growth reduction of Vibrionaceae and microflora diversification in ice-stored Pacific white shrimp (Penaeus vannamei) treated with low-frequency electric field

“…Ralstonia is a newly discovered opportunistic pathogen genus in recent years, often found in soil or water supply systems (Lacerda, et al, 2022;Ryan and Adley, 2014;Ryan, et al, 2007). Several studies (Liang, et al, 2021;Tang, et al, 2022;Hainan Zhang, 2018) have found an increase or minimal decrease in Ralstonia content at low temperatures, suggesting that Ralstonia is not incapable of adapting to low temperature storage environments. Its signi cant reduction in B might be attributed to interspeci c competition among bacteria and changes in the microenvironment.…”

Effect of low-frequency electric field on microbial community structure of Pacific white shrimp (Penaeus vannamei) during ice-temperature storage

“…Liang et al(Liang et al, 2021) found that Ralstonia was one of the major spoilage bacteria at the genus level when studying the effects of different storage temperatures on fresh lamb ora. Several studies(Liang et al, 2021;Zhang, 2018;Zhang et al, 2022) have found an increase or minimal decrease in Ralstonia content at low temperatures, suggesting that Ralstonia is not incapable of adapting to low temperature storage environments. Its signi cant reduction in B might be attributed to interspeci c competition among bacteria and changes in the microenvironment.As shown in Fig.5(c), the relative abundance of Aliivibrio, Pseudoalteromonas, Photobacterium, Moritella, and Psychrobacter increased to 14.77%, 7,74%, 9.87%, 8.30% and 3.60% in group B, respectively.…”