摘要:
A method for producing a flavonoid inclusion compound, including a cleaving step including treating a sparingly soluble flavonoid having a rhamnoside structure with an enzyme having a rhamnosidase activity in the presence of a cyclodextrin to cleave a rhamnose. According to the production method of the present invention, a flavonoid inclusion compound and a composition of flavonoid glycosides having excellent solubility in water can be efficiently produced, so that the compound and composition can be suitably utilized in the fields of medicaments, foodstuff, health foods, foods for specified health use, cosmetics, and the like.
摘要:
A composition containing one or more materials selected from the group consisting of fatty acids, proteins, peptides, amino acids, vitamins, minerals, alcohols, sweeteners, acidulants, antioxidants, thickening stabilizer, and surfactants, and a flavonoid-cyclodextrin inclusion compound, wherein the inclusion compound contains an inclusion compound obtained by treating a flavonoid having a rhamnoside structure with an enzyme having rhamnosidase activity in the presence of a cyclodextrin. According to the present invention, the bitterness and the changes in color tones originated from flavonoids can be inhibited, and foodstuff or the like having an unpleasant taste can be improved, so that the present invention can be suitably utilized in fields such as medicaments, foodstuff, health foods, foods for specified health use, and cosmetics.
摘要:
A method for producing a flavonoid inclusion compound, including a cleaving step including treating a sparingly soluble flavonoid having a rhamnoside structure with an enzyme having a rhamnosidase activity in the presence of a cyclodextrin to cleave a rhamnose. According to the production method of the present invention, a flavonoid inclusion compound and a composition of flavonoid glycosides having excellent solubility in water can be efficiently produced, so that the compound and composition can be suitably utilized in the fields of medicaments, foodstuff, health foods, foods for specified health use, cosmetics, and the like.
摘要:
A method for producing a flavonoid inclusion compound, including a cleaving step including treating a sparingly soluble flavonoid having a rhamnoside structure with an enzyme having a rhamnosidase activity in the presence of a cyclodextrin to cleave a rhamnose. According to the production method of the present invention, a flavonoid inclusion compound and a composition of flavonoid glycosides having excellent solubility in water can be efficiently produced, so that the compound and composition can be suitably utilized in the fields of medicaments, foodstuff, health foods, foods for specified health use, cosmetics, and the like.
摘要:
Disclosed is an anti-atherogenic composition or an atherosclerosis progression inhibitory composition which can be used effectively for preventing or ameliorating atherosclerosis. The anti-atherogenic composition or atherosclerosis progression inhibitory composition comprises an enzyme-treated isoquercitrin as the active ingredient.
摘要:
Novel trehalase having the properties that it hydrolyzes .alpha.,.alpha.'-trehalose, 2,2'-dideoxy-.alpha.,.alpha.'-trehalose and 2-deoxy-.alpha.,.alpha.'-trehalose into the respective constituting sugars while it does not act on neotrehalose, lactose, maltose, celobiose and sucrose; its optimum pH is 5 to 6; its optimum temperature is 65.degree. C.; it is stable against heating up to 65.degree. C.; its molecular weight as measured by a gel filtration is 400,000 to 500,000 while the molecular weight of the subunit as measured by a sodium dodecylsulfate--polyacrylamide gel electrophoresis is 180,000 to 250,000; its isoelectric point as measured by an isoelectricfocusing is 2.7; and it is a glycoprotein.
摘要:
The present invention provides a method for producing isoquercitrin, α-glycosylisoquercitrin, and rhamnose, the method comprising a step of naringin-degrading enzyme treatment during the isoquercitrin production from rutin in the presence of an edible component, such as gelatin, wheat gluten, chitosan, lecithin, a glycerol fatty acid ester, xanthan gum, carrageenan, sodium chondroitin sulfate, casein, enzymatically decomposed gelatin, sodium alginate, konjac extract, gellan gum, guar gum, soybean protein, agar, pectin, yeast extract, egg-white peptide, cluster dextrin, gum arabic, arginine, sodium metaphosphate, karaya gum, locust bean gum, sodium pyrophosphate, glucosamine, chitin, sodium glutamate, dextrin, trehalose, or a grain-based food ingredients. According to the present invention, isoquercitrin and α-glycosylisoquercitrin, which are of use as antioxidants, anti-fading agents, flavor change inhibitors, etc., can be produced in enhanced yields.
摘要:
The present invention provides a method for producing isoquercitrin, α-glycosylisoquercitrin, and rhamnose, the method comprising a step of naringin-degrading enzyme treatment during the isoquercitrin production from rutin in the presence of an edible component, such as gelatin, wheat gluten, chitosan, lecithin, a glycerol fatty acid ester, xanthan gum, carrageenan, sodium chondroitin sulfate, casein, enzymatically decomposed gelatin, sodium alginate, konjac extract, gellan gum, guar gum, soybean protein, agar, pectin, yeast extract, egg-white peptide, cluster dextrin, gum arabic, arginine, sodium metaphosphate, karaya gum, locust bean gum, sodium pyrophosphate, glucosamine, chitin, sodium glutamate, dextrin, trehalose, or a grain-based food ingredients. According to the present invention, isoquercitrin and α-glycosylisoquercitrin, which are of use as antioxidants, anti-fading agents, flavor change inhibitors, etc., can be produced in enhanced yields.
摘要:
The present invention provides an α-glycosyl isoquercitrin-containing novel composition which has a high in vivo absorbability, and hence exhibits a significant in vivo antioxidative activity. The present invention further provides preparation methods for such a composition. The composition contains a mixture of quercetin glycosides represented by the following formula: wherein Glc represents a glucose residue, and n is 0 or a positive integer of 1 or more,includes at least a quercetin glycoside wherein n is 3, and satisfies the following requirement (a):(a) the total proportion of quercetin glycosides in which n is 3, and in which other n values may be 1 or 2, or 1 and 2, is 50 mol % or more, and the total proportion of quercetin glycosides wherein n is 4 or more is 15 mol % or less, in the composition. The composition can be prepared by treating an enzymatically modified isoquercitrin with β-amylase.
摘要:
A process for dissolving a sparingly water-soluble flavonoid in an aqueous medium by use of one or more kinds of quercetin-3-0-glycosides, which is applicable to the case of using the sparingly water-soluble flavonoid as an antifading agent for colored drinks.