Vitamin B2, also known as riboflavin, is essential for maintaining human health. The purpose of this study was to isolate novel lactic acid bacteria that overproduce vitamin B2 and validate their potential probiotics. In study, Lactobacillus plantarum HY7715 (HY7715) selected among isolated from Kimchi. showed a very high riboflavin-producing ability compared the control strain due expression r...

Pathogenic and non-pathogenic related microorganisms differ in secondary metabolite production. Here we show that riboflavin overproduction by a fungal pathogen and its hyperaccumulation in affected host tissue exacerbates a skin infection to necrosis. In white-nose syndrome (WNS) skin lesions caused by Pseudogymnoascus destructans, maximum riboflavin concentrations reached up to 815 μg ml(-1),...

The production of riboflavin from vegetable oil was increased using a mutant strain of Ashbya gossypii. This mutant was generated by treating the wild-type strain with N-methyl-N'-nitro-N-nitrosoguanidine (MNNG). Riboflavin production was 10-fold higher in the mutant compared to the wild-type strain. The specific intracellular catalase activity after 3 d of culture was 6-fold higher in the muta...

Earthworm immune-competent cells, celomocytes, are easily retrieved for ex vivo analyses. Celomocytes consist of amebocytes and species-specific numbers of chloragocyte-derived eleocytes, the latter accumulating free riboflavin in their chloragosome inclusions. Autofluorescent eleocytes are abundant in Eisenia sp., Allolobophora sp., Dendrobaena sp., Dendrodrilus sp., and Octolasion sp., and th...

Background: Riboflavin has received rather less attention in the past years, but interest is increasing because it is recognized as an essential component of cellular biochemistry, it is one of the vital vitamins required by human, bacteria, animals and plants. Today, bio production of riboflavin is competing with chemically synthesized one. Lactobacilli are well reckoned for their technologica...

Riboflavin kinases catalyze synthesis of FMN from riboflavin and ATP. These enzymes have to date been cloned from bacteria, yeast, and mammals, but not from plants. Bioinformatic approaches suggested that diverse plant species, including many angiosperms, two gymnosperms, a moss (Physcomitrella patens), and a unicellular green alga (Chlamydomonas reinhardtii), encode proteins that are homologou...

Riboflavin synthesis by bacteria is not unknown. Several species have been shown to produce it: Bacillus pasteurianum, Lactobacillus delbrueckii and Clostridium butyricum by Warburg and Christian (1933); butyl alcohol bacteria by Yamasaki and Yositome (1938); various lactic acid bacteria by Snell and Strong (1939a); and Corynebacterium diphtheriae by Evans, Hardley and Happold (1939). The synth...

PURPOSE To demonstrate the antimicrobial properties of riboflavin/UV-A (365 nm) against fungal pathogens. METHODS The antimicrobial properties of riboflavin/UV-A (365 nm), with or without previous treatment with amphotericin B, were tested on three groups of fungi selected from severe cases of keratomycosis: Candida albicans, Fusarium sp, and Aspergillus fumigatus. They were tested by using K...

PURPOSE We compared an iontophoresis riboflavin delivery technique for transepithelial corneal collagen crosslinking (I-CXL) with a conventional CXL (C-CXL). METHODS We designed three experimental sets using 152 New Zealand rabbits to study riboflavin application by iontophoresis using charged riboflavin solution (Ricrolin+) with a 1-mA current for 5 minutes. The first set was to compare ribo...