Isolation and Identification of pathovar from Black Fungus and Characteristics of the Gene Cluster - Shanghai Municipality, China, 2023.

What Is Already Known About This Topic?: () pathovar (), a foodborne pathogen, can cause lethal poisoning. Most cases have been reported in China, primarily originating from fermented cereal products.

What Is Added By This Report?: This study investigated the prevalence of contamination in commercially available fungi and analyzed the environmental conditions for bongkrekic acid (BA) production in Shanghai.

[Determination of acrylamide and ethylene oxide hemoglobin adducts by isotope dilution-ultra-high performance liquid chromatography-triple quadrupole mass spectrometry].

Objective: To develop a precise quantitative method for detecting N-alkylated hemoglobin adducts of acrylamide and ethylene oxide.

Methods: Hemoglobin was liberated from anticoagulated whole blood through freeze-thaw lysis of erythrocytes. A reaction mixture containing 250 μL of hemolysate, stable isotope-labelled internal standards, and the Edman degradation reagent fluorescein isothiocyanate was prepared.

[Research on pretreatment methods for cystine determination in milk powder].

Objective: To establish a rapid, accurate and safe pretreatment method for the determination of cystine in milk powder.

Methods: Samples were oxidized at 50 ℃ for 10 min after adding performic acid, and then the reaction was terminated with ethanol as oxidation terminator. The reaction solution was concentrate to dryness by vacuum centrifugation at 50 ℃.