INCI Lactobacillis Ferment
Leucidal Liquid SF is Salicylate Free.
ECOCERT/COSMOS Approved
Leucidal Liquid SF is a probiotic-based ingredient created by the fermentation of Lactobacillus in a defined growth medium. Lactobacillus is one of the species of micro-organisms used to produce fermented products such as sauerkraut and kimchi, a Korean diatary staple from cabbage. Like many members of the lactic acid bacteria family, Lactobacillus is capable of restricting the growth of other microorganisms by acidifying its environment.
However, in addition to acidifying its environment, Lactobacillus also produces novel antimicrobial peptides, also known as bacteriocins, that are capable of providing broad spectrum antimicrobial protection. During the manufacturing process, lysozyme is added to the ferment filtrate to facilitate a controlled cell lysis. This steps helps ensure the release of the antimicrobial peptides for maximized activity.
Its antimicrobial properties are effective between pH 3 and 8, with a pH below 6 being preferred.
During manufacturing, lysozyme is added to the ferment filtrate to facilitate a controlled cell lysis. This steps helps ensure the release of the antimicrobial peptides for maximized activity.
The ability of Leucidal Liquid SF to inhibit the growth of a variety of bacteria and fungi was determined used the Minimum Inhibitory Concentration MIC test.
A Double Challenge test using Leucidal Liquid SF was conducted to evaluate the ability of the product to provide antimicrobial protection in cosmetic finished products. A basic oil-in-water emulsion was used as the base. Samples were inoculated with S. aureus, E. coli, P. aeruginosa, C. albicans, and A. brasilliensis and incubated for 28 days. During this period, samples were periodically collected and tested for the presence of viable microorganisms. Following the initial 28 days of incubation, the samples were reinoculated with the microbial cultures for another 28 day period. The results indicate that Leucidal Liquid SF has the potential to provide effective protection for lotions and other cosmetic formulations. (compared to the Leucidal this one has better efficacy in combatting fungal organisms).
Leucidal Liquid SF is Salicylate Free.
It is also GMO Free and no ethoxylation, irradiation, sulphonation, hydrogenation, or ethylene oxide is used in processing. The solvent used for extraction is simply water. There are no additional preservatives or antioxidants. Formulation Guidelines.
Add it to products with a pH between 3 and 8
Performance is best at a pH below 6. (this is a slightly different pH range to that of Leucidal)
Add it during the cooling phase of the formulation process at temperatures lower than 70C We add it at cool-down when temperature is below 40C .
Recommended Usage Level 2.0 -4.0% ( We use 4% in formulations if it is the only preservative; and closer to 2% if it is a co-preservative).
Appearance Clear to slightly hazy yellow to light amber liquid
Solubility Soluble in water, glycerin and propylene glycol, immiscible with oils. Shelf Life 12 months from date of manufacture
Storage Do not freeze,