Evaluation of storage conditions and efficiency of a novel microencapsulated Salmonella phage cocktail for controlling S. enteritidis and S. typhimurium in-vitro and in fresh foods.
In this study, microencapsulation is applied for enhancing the stability and efficacy of phages as bio-control agent. Microencapsulated phage cocktail kept in aluminium laminated foil bag (LF) at 4 °C showed the highest survivability with a titer loss of 0.5 log PFU/g after 12 weeks of storage. Titer loss of phage cocktail lysate>4 log PFU/mL was observed after 12 weeks, at 4 °C. Color change of microencapsulated phage cocktail kept in LF at 4 °C did not show any significant difference during storage, and water activity (free water content) at 0.13 was found in these conditions. In-vitro study, S. Enteritidis and S. Typhimurium were decreased 1.79 and 3.63 log CFU/mL, respectively at 37 °C. Whereas, 0.43 and 0.76 log CFU/mL, respectively were observed at 10 °C. In foods, S. Enteritidis and S. Typhimurium were decreased 0.57 and 1.78 log CFU/cm2, respectively in meat. Whereas, 0.86 and 1.2 log CFU/g, respectively were observed in sprout. Foods with/without microencapsulated phage cocktail showed non-significant differences in liking scores after 2 days of storage. Overall, microencapsulated phage cocktail suggests another alternative for phage-based biocontrol with improved stability and efficacy for food application. PMID: 31202408 [PubMed - in process]
Publication date: Available online 12 July 2019Source: Food ControlAuthor(s): Haiqiang Wang, Elliot T. RyserAbstractDiced tomatoes have been linked to outbreaks of salmonellosis in the United States. Compared to slicing, commercial production of diced tomatoes is more complex and includes mechanical dicing as well as washing, dewatering, conveying, and packing. Consequently, this study aimed to 1) quantify Salmonella transfer during pilot-scale dicing of tomatoes, 2) assess the efficacy of three sanitizer treatments against Salmonella during flume tank washing, and 3) assess the efficacy of four sanitizers against Salmonel...
The illnesses in this outbreak began between Jan. 14, 2019 and June 16, 2019. Most of the patients are older than 60.
Here are some of the latest health and medical news developments, compiled by the editors of HealthDay: Salmonella Outbreak Linked to Pig Ear Dog Treats: CDC A salmonella outbreak linked to contact with pig ear dog treats has sickened 45 people in...
Outbreaks of salmonella infections are being linked to contact with an increase in backyard chickens, ducks and other poultry, according to the Centers for Disease Control and Prevention (CDC). "Salmonella is a bacteria that is often present in the intestinal tract or in the GI tract," says Dr. Summer Allen, a family medicine physician at [...]
A Cavi brand of whole, fresh papayas " are likely the source " of a salmonella outbreak in eight states, the Centers for Disease Control and Prevention said.
The Centers for Disease Control and Prevention, Food and Drug Administration and local health officials are investigating salmonella outbreaks in 13 states that may have been caused by pig ear dog treats.
Even if you don't eat pig ear dog treats, here is how this Salmonella outbreak could affect you.
A salmonella outbreak that's sickened 62 people in eight states appears to be linked to whole, fresh papayas from Mexico.
Here are some of the latest health and medical news developments, compiled by the editors of HealthDay: Salmonella Outbreak in Eight States Linked to Mexican Papayas: CDC A salmonella outbreak that's sickened 62 people in eight states appears to...
Got papaya? Say papay-no, if they're from Mexico and you are in these states.