, Russian Federation
Krasnoyarsk, Russian Federation
At present time functional food, medicine and cosmetic products, bioactive additives in the form of natural extracts usage is being increased. As a raw material for their obtaining the justified decision is renewable biomass application in particular, of hanging birch (Bétula péndula) and black currant (Ríbes nígrum) vegetative organs naturally growing in the Krasnoyarsk region. The research authors found out that black currant leaves water-alcohol extract is the most effective preservative. Birch leaves water-alcohol extract has somewhat lower biocide activity. It was detected that sodium benzoate blocks fungal culture Candida albicans growth more effective in neutral than in acidic environment and it allows to recommend black currant and birch leaves extract application in combination with sodium benzoate additives to strengthen conserving system fungicidal activity. Low toxicity in relation to sodium benzoate and currant leaves extract cell fiber cultures and birch leaves and propolis some toxicity was confirmed. The obtained results let recommend currant leaves extract as the least toxic biocide natural additive while birch leaves extract can be used only in certain (minimal) concentrations.
BAS, natural extract, preservative, biocidal additives, leaves of Ribes nigrum L. sort, cosmetic product ingredient
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