摘要:
A process for ozonizing an unsaturated fatty acid or a lower alkyl ester thereof, which comprises flowing a thin-film stream of the acid or ester and a gas comprising ozone and oxygen or a mixture of oxygen with air or an inert gas in the same direction to bring the thin-film stream and the gas into gas-liquid contact; and a process for oxidatively decomposing the resulting ozonide with ozone-free oxygen or air.
摘要:
A promotor for biological hyaluronic acid synthesis and a composition for external application to the skin comprise, as an effective component, an extract of the seaweed Ulva pertusa. The promotor exhibits a substantially excellent biological hyaluronic acid synthesis-promoting effect and accordingly activates the skin cells, prevents the aging thereof and the formation of wrinkles and makes the skin smooth and fresh. Thus, it can provide a highly safe agent externally applied to the skin. Consequently, the composition can widely be used in a variety of preparations such as various cosmetic creams, milky lotions, toilet waters, beauty essences, packs, under-makeups, foundations, jellies and ointments.
摘要:
A melanocyte-stimulating hormone inhibitor has an amino acid sequence represented by the following formula [I], [II] or [III] in the molecule:
wherein His, Ser, Arg, Trp, Leu, Ala and Cys represent L- or D-histidine; serine, arginine, tryptophan, leucine, alanine and cysteine residues, respectively. The melanocyte-stimulating hormone inhibitor and an external preparation to be applied to the skin which contains the inhibitor prevent or cure the symptoms of chloasmata and freckles caused by an excess production of melanin by enhanced melanocyte function.
摘要:
A method for continuous preparation of highly pure monoglyceride comprises the steps of esterifying fatty acid dissolved in a nonpolar solvent at the interface between the nonpolar solvent phase and a polar solvent phase containing glycerol, water and dispersed lipase, the polar phase being located below the nonpolar phase, continuously taking out the nonpolar solvent phase, cooling the taken out phase to isolate the resulting monoglyceride by precipitation, and bringing back the remaining solution to the esterification system. By this method, monoglycerides having high purity can be produced continuously and at low cost, and further monoglycerides of straight-chained fatty acids can preferentially obtained even though the fatty acids used contain branched fatty acids.
摘要:
A method of producing microcapsules comprising the steps of: mixing (i) an aqueous dispersion containing a capsule having an wall membrane containing polyvinyl alcohol and an aqueous solution containing 8% to 50% by weight of an electrolyte or electrolytes and (ii) an aldehyde or aldehydes having a solubility in water at 20°C of not more than 10%; and allowing the mixture to react under an acidic condition.