|Source:||The leaves of Ginkgo biloba L.|
|Biological Activity or Inhibitors:||1. Ginkgolic acid C15:1 represses curli genes and prophage genes in EHEC.
|Solvent:||Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.|
|Storage:||Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: firstname.lastname@example.org
|After receiving:||The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.|
|1 mg||5 mg||10 mg||20 mg||25 mg|
|1 mM||2.886 mL||14.43 mL||28.86 mL||57.7201 mL||72.1501 mL|
|5 mM||0.5772 mL||2.886 mL||5.772 mL||11.544 mL||14.43 mL|
|10 mM||0.2886 mL||1.443 mL||2.886 mL||5.772 mL||7.215 mL|
|50 mM||0.0577 mL||0.2886 mL||0.5772 mL||1.1544 mL||1.443 mL|
|100 mM||0.0289 mL||0.1443 mL||0.2886 mL||0.5772 mL||0.7215 mL|
Int J Food Microbiol. 2014 Mar 17;174:47-55.
|Ginkgolic acids and Ginkgo biloba extract inhibit Escherichia coli O157:H7 and Staphylococcus aureus biofilm formation.[Pubmed: 24457153]|
|Infection by enterohemorrhagic Escherichia coli O157:H7 (EHEC) is a worldwide problem, and there is no effective therapy. Biofilm formation is closely related to EHEC infection and is also a mechanism of antimicrobial resistance. Antibiofilm screening of 560 purified phytochemicals against EHEC showed that Ginkgolic acid C15:1 and ginkgolic acid C17:1 at 5μg/ml and Ginkgo biloba extract at 100μg/ml significantly inhibited EHEC biofilm formation on the surfaces of polystyrene and glass, and on nylon membranes. Importantly, at their working concentrations, ginkgolic acids and G. biloba extract did not affect bacterial growth. Transcriptional analyses showed that Ginkgolic acid C15:1 repressed curli genes and prophage genes in EHEC, and these findings were in-line with reduced fimbriae production and biofilm reductions. Interestingly, ginkgolic acids and G. biloba extract did not inhibit the biofilm formation of a commensal E. coli K-12 strain. In addition, ginkgolic acids and G. biloba extract inhibited the biofilm formation of three Staphylococcus aureus strains. The findings of this study suggest that plant secondary metabolites represent an important resource for biofilm inhibitors.|