Identification and Safety Assessment of KB1733 Isolated from Traditional Japanese Pickle Based on Whole-Genome Sequencing Analysis and Preclinical Toxicity Studies.

The present study involves the precise identification and safety evaluation of KB1733, previously identified using 16S rRNA analysis, through whole-genome sequencing, phenotypic analysis, and preclinical toxicity studies. Analyses based on the genome sequencing data confirm the identity of KB1733 as and show that the genes related to vancomycin resistance are only present on the chromosome, while no virulence factor genes are present on the chromosome or plasmid. Phenotypic analyses of antibiotic resistance and hemolytic activity also indicated no safety concerns.

Safety evaluation of arabinase (arabinan endo-1,5-α-L-arabinanase) from .

Arabinase is an enzyme recognized for its ability to degrade arabinan, a plant cell wall constituent. It has been applied in the food industry most commonly for juice processing. One commercial source of arabinase is (), a black  species.

Safety evaluation of AMP deaminase from Aspergillus oryzae.

Adenosine-5'-monophosphate (AMP) deaminase is an enzyme used to increase concentrations of 5'-inosine monophosphate in certain foods and beverages for flavoring purposes. One commercial source of this enzyme is Aspergillus oryzae, a filamentous fungus with a history of safe use in Asia as a fermentation organism used in the production of miso sauce and sake liquors. Noting the use of the enzyme in food intended for human consumption and potential presence at trace levels in finished goods, a series of safety studies including an in vitro Ames test and chromosome aberration assay with Chinese hamster lung fibroblasts were conducted along with a 90-day oral toxicity study in rats.