Plant cosmetic preservative composition and preparation method thereof

Abstract

The invention relates to a plant cosmetic preservative composition and a preparation method thereof. The plant cosmetic preservative composition includes a preservative mixture composed of a grapefruit seed extract, an origanum vulgare herb extract and a magnolia officinalis bark extract. The method is characterized in that a raspberry fruit extract and a sophora flower extract are employed to conduct preservative synergy on the preservative mixture. The preservative mixture, the raspberry fruit extract and the sophora flower extract are coated by a lipid material to form a sub-microparticle emulsion, and the lipid material is composed of mannosylerythritol lipid, sodium surfactin, hydrogenated lysolecithin and glycerin in a mass ratio of 5-10:1-3:3-5:20-50. The plant cosmetic preservative composition provided by the invention has low irritation, good preservative effect and effective components from natural plants, and is suitable for cosmetics.

Description

technical field [0001] The invention belongs to the technical field of cosmetics, in particular to a plant-derived cosmetic antiseptic composition and a preparation method thereof. Background technique [0002] Cosmetics contain a variety of nutrients, which are extremely susceptible to microbial contamination during production, storage and use, which in turn leads to product deterioration such as turbidity, precipitation, discoloration, and odor. If the cosmetics are contaminated by pathogenic bacteria, such pathogenic microorganisms and their metabolites will affect the health of the body. Cosmetics must add an appropriate amount of preservatives to prevent product contamination by microorganisms and ensure the safety and hygienic quality of cosmetics. [0003] Common pathogens in cosmetics include Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Aspergillus niger, Candida albicans, and yeast. The main function of preservatives is to inhibit the growth of...

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Problems solved by technology

[0005] Although natural products with antiseptic function have been applied to a variety of products with high safety requirements, such as food, etc., their application in cosmetics is relatively seldom. The main reasons are: first, the shelf life of food is very short, Usually only 3-6 months, once used up after opening, there is no possibility of repeated exposure to microorganisms, while cosmetics usually have a shelf life of 3 years, during use, through the process of taking by consumers, they will repeatedly contact microorganisms, so The preservatives used in cosmetics need to have stronger antiseptic properties and more stable chemical stability. Generally, single-component natural plant-derived antibacterial ingredients are not suitable; second, the common types of microorganisms in food are 30 species such as Salmonella, Please refer to SN / T2641-2010 Detection of common pathogenic bacteria in food, which is different from common bacteria in cosmetics, so the combination of preservatives selected is different

Third, most of the natural plant-derived preservatives have some color and taste, and some preservatives are phototoxic and skin irritating. For food, these may not be a problem, but for cosmetics, there will be problems, because once the preservative If it affects the original color or smell of cosmetics, you will need to add flavors or pigments to overcome this effect, resulting in increased costs and reduced stability. If it is irritating to the skin, it will be more difficult to overcome

Fourth, compared with synthetic preservatives, natural plant-derived preservatives have lower anti-corrosion efficiency, and the amount added is usually more than ten times that of synthetic preservatives. It is difficult to achieve satisfactory results with a single use, and high dosage will also increase product costs.

For example, oregano whole herb extract is easily oxidized in the air and turns brown. Magnolia officinalis bark extract has a strong smell of traditional Chinese medicine. When it is directly added to cosmetics, it needs to be adjusted by adding pigments and essences, resulting in increased costs and reduced product stability. Need to take certain methods to overcome its own defects

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