Leucidal SF (TM) Preservative

Escentials of Australia

Leucidal SF (TM) Preservative

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.

Useage: For many cosmetic formulations Leudical Liquid SF can function as a natural alternative to synthetic preservatives. As with all biological materials some attention must be paid to the conditions under which Leucidal Liquid SF can be used. Its antimicrobial properties are effective between pH 3 and 8, with a pH below 6 being preferred. 

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.  The results indicated Leucidal Liquid SF has the ability to provide broad spectrum antimicrobial protection please see the Technical Data Sheet for more information.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.

Key Benefits Water soluble Naturally derived REACH Compliant. Broad spectrum of antibacterial activitySuggested Applications Skin Conditioning Antimicrobial Processing InformationLeucidal 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. Add it during the cooling phase of the formulation process at temperatures lower than 70C  We recommend adding it at cool-down when your formulation temperature is below 40C  to avoid destabilization issues.The choice of preservatives for personal care formulations should be carefully considered. This is especially true when using natural antimicrobials and or other mild antimicrobials. We recommend that every formula undergo stability and microbial testing to ensure adequate preservation.

Recommended Usage Level 2.0 4.0%

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,

INCI Lactobacillis Ferment

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