soy sauce | barfblog

Knowing the survival characteristics of foodborne pathogens in raw ready-to-eat (RTE) seafood is the key to predicting whether they pose a microbiological hazard. The present study examined the survival of Escherichia coli O157:H7, Salmonella Typhimurium, Vibrio parahaemoliticus, Listeria monocytogenes, and Staphylococcus aure- us in raw RTE crab marinated in soy sauce.

Inoculated crabs (initial bacterial population = 4.1–4.4 log CFU/g) were immersed in soy sauce and then stored at refrigeration (5 °C) or room temperature (22 °C) for up to 28 days. At 5 °C, all bacteria (except V. parahaemolyticus) survived in crab samples until Day 28 (counts of 1.4, 1.6, 3.1, 3.2 log CFU/g for E. coli O157:H7, S. Typhimurium, L. monocytogenes, and S. aureus, respectively). Howev- er, at 22 °C, all tested bacteria were more susceptible to the antimicrobial effects of marination. Regardless of tem- perature, foodborne pathogens attached to crab samples were more resistant to marination than those suspended in soy sauce samples; however, the survival pattern for each species was different. Gram-positive bac- teria were most resistant to marination conditions (high salinity, low pH), whereas V. parahaemolyticus was ex- tremely susceptible.

Marination is the only antibacterial step in the manufacturing processes; however, the results presented herein reveal that this is not sufficient to inactivate foodborne pathogens. In particular, the survival of pathogens on crabs at refrigeration temperature may pose a major hazard for the consumption of raw RTE seafood. Thus, appropriate decontamination methods and implementation of safety management practices are needed.

This study provides predictive microbiological information of foodborne pathogens in raw RTE seafood with margination.

Survival of foodborne pathogens (Escherichia coli O157:H7, Salmonella Typhimurium, Staphylococcus aureus, Listeria monocytogenes, and Vibrio parahaemolyticus) in raw ready-to-eat crab marinated in soy sauce

International Journal of Food Microbiology 238 (2016) 50–55, DOI: http://dx.doi.org/10.1016/j.ijfoodmicro.2016.08.041

TJ Cho, NH Kim, SA Kim, JH Song

A young man who drank a quart of soy sauce went into a coma and nearly died from an excess of salt in his body, according to a recent case report.

The 19-year-old, who drank the soy sauce after being dared by friends, is the first person known to have deliberately overdosed on such a high amount of salt and survived with no lasting neurological problems, according to the doctors in Virginia who reported his case. The case report was published online June 4 in the Journal of Emergency Medicine.

Huffington Post reports too much salt in the blood, a condition called hypernatremia, is usually seen in people with psychiatric conditions who develop a strong appetite for the condiment, said Dr. David J. Carlberg, who treated the young man and works as an emergency medicine physician at MedStar Georgetown University Hospital in Washington, D.C.

Hypernatremia is dangerous because it causes the brain to lose water. When there is too much salt in the bloodstream, water moves out of the body tissues and into the blood by the process of osmosis, to try to equalize the salt concentration between the two. As water the leaves the brain, the organ can shrink and bleed, Carlberg said.

After the man drank the soy sauce, he began twitching and having seizures, and the friends took him to an emergency room. That hospital administered anti-seizure medication, and he was already in a coma when he was taken to the hospital where Carlberg was working, the University of Virginia Medical Center, nearly four hours after the event.

The team immediately began flushing the salt out of his system by administering a solution of water and the sugar dextrose through a nasal tube. When they placed the tube, streaks of brown material came out. Within a half hour, they pumped 1.5 gallons (6 liters) of sugar water into the man’s body.

The man’s sodium levels returned to normal after about five hours. He remained in a coma for three days, but woke up on his own.

A typical quart of soy sauce has more than 0.35 pounds (0.16 kilograms) of salt, the researchers said.

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Soy sauce overdose sends man into coma