Skin preparation for external use characterized by containing sugar derivative of a,a-trehalose
A technology for skin external preparations and sugar derivatives, which is applied in the direction of medical preparations containing active ingredients, skin care preparations, and medical preparations with no active ingredients, etc. It can solve the problem of no record of effective dose, poor stretching and irritation , without any specific records, etc.
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Embodiment 1
[0082]Calcium carbonate was added to cornstarch milk with a concentration of 20% to make the final concentration 0.1%, and the pH was adjusted to 6.5, and α-amylase (manufactured by Nobo Corporation, trade name "タママミル 60L") was added thereto to make It was 0.2% per gram of starch and reacted at 95°C for 15 minutes. After autoclaving the reaction solution at 120°C for 10 minutes, cooling to 50°C, adjusting the pH to 5.8, adding maltotetraose disclosed in JP-A-63-240784 at 5 units per gram of starch Produce amylase (manufactured by Hayashibara Biochemical Research Institute of Co., Ltd.), 500 units of isoamylase (manufactured by Hayashibara Biochemical Research Institute of Co., Ltd.), react for 48 hours, and add 30 units of α-amylase per gram of starch thereto (manufactured by Ueda Chemical Co., Ltd., trade name "α-amylase 2A"), and reacted at 65° C. for 4 hours. The reaction solution was subjected to autoclave treatment at 120° C. for 10 minutes, then cooled to 45° C., and Q3...
Embodiment 2
[0084] The syrup prepared by the method of Example 1 was spray-dried by a conventional method to prepare an amorphous powder product. This product has low hygroscopicity and good water solubility, as in Example 1, and is suitable as a raw material for external skin preparations.
Embodiment 3
[0086] The saccharification solution prepared by the method of Example 1 was subjected to column fractionation using a salt type strongly acidic cation exchange resin (sold by Dow Chemicaul Co., Ltd., trade name "Dowex 50W-X4", Mg++ type). Four jacketed stainless steel columns with an inner diameter of 5.4 cm were filled with the resin and connected in series, and the total length of the resin layer was 20 m. While maintaining the temperature inside the column at 55°C, add a sugar solution of 5v / v% to the resin, and flow warm water at 55°C at SV 0.13 for fractionation, remove the high-content fraction of glucose and maltose, and collect α , α-trehalose saccharide derivatives high content fraction, and then refined and concentrated to prepare α, α-trehalose saccharide derivatives high content syrup. Furthermore, the syrup was spray-dried by a conventional method to prepare an amorphous high-content powder of α,α-trehalose sugar derivatives. This product contains 70.2% of α-mal...
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