摘要:
The invention relates to a process for obtaining an aqueous extract enriched with small RNAs having a maximum length of 150 nucleotides from a plant material. The invention is characterized in that it comprises the following steps according to which: a) the plant material is placed in the presence of water; b) tetrasodium ethylenediaminetetraacetic acid (EDTA) is added to the mixture obtained in a) at a pH of between 10.5 and 11; c) the pH of the mixture obtained in b) is then adjusted to a value of between 6 and 8; d) the mixture obtained in c) is purified so as to remove the plant material and to recover a crude aqueous extract; and e) the pH is verified and is readjusted if necessary to a value of between 6 and 8. The invention also relates to an aqueous extract of plant material, enriched with small RNAs having a maximum length of 150 nucleotides, capable of being obtained by means of such a process, and also to the compositions comprising such an extract and to the cosmetic uses thereof for combatting the signs of skin ageing, and improving skin moisturization.
摘要:
The present invention relates to the cosmetic use of a combination of a hydrolysed rice extract and a grapeseed extract as an active agent to protect cutaneous cells from pollution. The present invention relates also to a cosmetic method of treatment for protecting skin epidermal cells from atmospheric pollution comprising applying on the skin area to be treated a composition comprising a combination of a hydrolysed rice extract and a grapeseed extract.
摘要:
The invention relates to a Truffle extract for skin cosmetic use, comprising compounds having a molecular weight of less than 5 kDa. The invention also relates to a cosmetic method of treatment designed to reduce and/or correct the signs of aging and photo-aging of the skin and keratinous appendages, and to protect the skin against aggressions due to ultraviolet radiation.