Edible mushrooms, including wild mushrooms, are currently being investigated as natural sources to evaluate their prebiotic potential. This study aimed to evaluate the prebiotic potential of crude polysaccharides (CPSs) extracted from wild UBU_LS1 and UBU_LP2 and their application as cryoprotectants in the freeze-drying process to formulate a novel synbiotic product. Based on fruiting body morphology and molecular identification, two wild edible mushrooms named UBU_LS1 and UBU_LP2 were identified as and respectively.
View Article and Find Full Text PDFLyophilization is one of the most used methods for bacterial preservation. In this process, the cryoprotectant not only largely decreases cellular damage but also plays an important part in the conservation of viability during freeze-drying. This study investigated using cryoprotectant and a mixture of the cryoprotectant to maintain probiotic activity.
View Article and Find Full Text PDFThe spread of antibiotic resistance is a major public health concern worldwide. Commensal bacteria from the human genitourinary tract can act as reservoirs of resistance genes playing a role in their transfer to pathogens. In this study, the minimum inhibitory concentration of 16 antibiotics to 15 isolates from the human vagina, identified as , , and , was determined.
View Article and Find Full Text PDFLactic acid bacteria can act as reservoirs of antibiotic resistance genes that can be ultimately transferred to pathogens. The present work reports on the minimum inhibitory concentration (MIC) of 16 antibiotics to 25 LAB isolates of five and one species from the human vagina. Acquired resistances were detected to kanamycin, streptomycin, chloramphenicol, gentamicin, and ampicillin.
View Article and Find Full Text PDFWe report the genome sequence of 47-7, a good probiotic strain isolated from an infant. Its genome size is 1.83 Mb, it is assembled from 180 contigs, and it consists of 1,636 protein-coding genes, 15 rRNAs, 57 tRNAs, and 4 noncoding RNAs.
View Article and Find Full Text PDFThe ability to serve as a delivery vehicle for various interesting biomolecules makes lactic acid bacteria (LAB) very useful in several applications. In the medical field, recombinant LAB expressing pathogenic antigens at different cellular locations have been used to elicit both mucosal and systemic immune responses. Expression-secretion vectors (ESVs) with a signal peptide (SP) are pivotal for protein expression and secretion.
View Article and Find Full Text PDFThere is an increasing interest to develop various lactic acid bacteria (LAB) species as mucosal delivery vehicles, for which the development of a variety of cloning and expression systems for these bacteria is of primary importance. This study reports the complete nucleotide sequence of the cryptic plasmid pRCEID7.6 derived from the chicken probiotic LAB strain Lactobacillus casei TISTR1341.
View Article and Find Full Text PDFObjective: To isolate, identify, and evaluate the probiotic properties of lactic acid bacteria (LAB) isolated from the feces of breast-fed infants.
Material And Method: The probiotic tests included investigation of hemolysis activity, survival in simulated gastrointestinal tract conditions (acid and bile salt tolerance), susceptibility to antibiotics, and ability to inhibit selected bacterial pathogens (Escherichia coli O157:H7, Vibrio cholerae and Salmonella enterica subsp enterica serovar Typhimurium). The bacterial species identification was performed by both carbohydrate utilization and partial 16S ribosomal RNA sequencing.
Background: Burkholderia pseudomallei is a causative agent of melioidosis. Ceftazidime is the preferred drug of choice for treatment. However, the motility rate is high in endemic areas.
View Article and Find Full Text PDFBackground: The blowfly, Chrysomya megacephala, is distributed worldwide. Previous studies found maggot excretions-secretions from other blowfly species inhibited pro-inflammatory response and antimicrobial activity.
Objective: This study aimed to test the bactericidal activity of excretions-secretions from C.
Background: The housefly Musca domestica and the blowfly Chrysomya megacephala are found worldwide and are medically significant as mechanical vectors of various pathogens from unsanitary locations to food, resulting in diseases in humans.
Objectives: This study aimed to test the antimicrobial activity against Enterococcus spp. isolated from M.
Lactic acid bacteria (LAB) species are envisioned as promising vehicles for the mucosal delivery of therapeutic and prophylactic molecules, including the development of oral vaccines. In this study, we report on the expression of a synthetic nucleocapsid (NP) gene of influenza A virus in Lactobacillus casei. The NP gene was re-designed based on the tRNA pool and the codon usage preference of L.
View Article and Find Full Text PDFPyrosequencing followed by conventional PCR and sequencing was used to determine the complete nucleotide sequence of three plasmids (pRCEID2.9, pRCEID3.2, and pRCEID13.
View Article and Find Full Text PDF