摘要:
A DNA encoding L-ribose isomerase which catalyzes the isomerization of L-ribose into L-ribulose and the isomerization of L-ribulose into L-ribose; and a process for producing a polypeptide by a DNA recombination technique with the use of this DNA.
摘要:
It is intended to provide embolic materials which can be easily handled and have stable qualities. This object can be achieved by providing embolic materials containing polysaccharide ester derivatives having a weight-average molecular weight of from 10,000 to 500,000 daltons and an average degree of acyl-substitution exceeding 2, embolic agents for arteriovenous aneurysm comprising these embolic materials and physiologically acceptable adequate hydrophilic organic solvents, and a process for producing an embolic agent for arteriovenous aneurysm involving the step of dissolving such an embolic material in a physiologically acceptable hydrophilic organic solvent.
摘要:
An organic dye compound which has excellent recording properties in an optical recording medium for high-density recording; and a use of the compound. The compound is an asymmetric trimethine-type cyanine dye having a specific structure and specific properties. Also provided are: a light absorber containing the cyanine dye; an optical recording medium; and a process for producing the cyanine dye through the step of reacting either of a 3,3-dimethyl-5-nitroindolium compound and a 3,3-dimethyl-5-sulfonamidoindolium compound each having an active methyl group or a suitable eliminable group with a 3,3-dimethyl-benzoindolium compound having an active methyl group or a suitable eliminable group.
摘要:
Concerning foods, drinks, cosmetics, drugs, feeds and so on, it is intended to prevent the skin from aging and maintaining and improving health. More specifically speaking, the technical feature resides in preparing a TGF-β production/collagen production enhancer containing as the active ingredients royal jelly and L-ascorbic acid or a TGF-β production enhancer containing as the active ingredient royal jelly alone, orally or percutaneously administering the former to fibroblasts or the latter to keratinocytes, thus enhancing the production of TGF-β in fibroblasts/keratinocytes of the subject animal to thereby enhance the production of collagen in fibroblasts or promote the proliferation of keratinocytes. Thus, the production of collagen, which is a major constituent of derm, tissues and organs, can be enhanced or fibroblasts occurring in derm constituting the skin or keratinocytes occurring in epiderm can be activated.
摘要:
The present invention has the object to dehydrate hydrous matters without denaturing or deteriorating them by using a dehydrating agent comprising an anhydrous cyclotetrasaccharide, and provides a dehydrating agent comprising the cyclotetrasaccharide; a method for dehydrating hydrous matters through a step of incorporating, contacting or coexisting the cyclotetrasaccharide into, with, or in the hydrous matters; and dehydrated products obtainable thereby.
摘要:
Pyran derivatives represented by any of chemical formulae (1) to (3). They are highly sensitive to visible light and highly luminescent and hence are useful in various applications in photochemical polymerization, organic electroluminescence, and dye lasers. In chemical formulae (1) to (3), R1 and R2 each independently represents hydrogen, alkyl, alkenyl, or aryl (the alkyl and aryl may be substituted); R3 represents cyano, carboxyl, a carboxylic ester group, amido, or a five- or six-membered heterocycle optionally forming a fused ring; and R4 represents hydrogen, halogeno, cyano, carbonyl, or a substituent derived from carbonyl, provided that R1 and/or R2 may form a cyclic structure in cooperation with the benzene ring bonded thereto.
摘要:
It is aimed to provide an organic dye compound having the absorption maximum in the ultraviolet region to the visible region with short wavelength and use thereof. This problem is solved by providing a specific monomethine cyanine dye; a light absorbing agent and a photorecording medium containing this monomethine cyanine dye; and a process for producing the monomethine cyanine dye via the step of reacting a quaternary ammonium salt of a nitrogen-containing heterocyclic compound having an active methyl group with a quaternary ammonium salt of a nitrogen-containing heterocyclic compound having an appropriate leaving group.
摘要:
The present process for producing a high alpha -monoglucosyl hesperidin content product is characterized in that it comprises the steps of contacting glucoamylase and alpha -L-rhamnosidase simultaneously or randomly with a solution containing alpha -glucosyl hesperidin and hesperidin to obtain a mixture; crystallizing and separating alpha -monoglucosyl hesperidin in and from the mixture; and collecting the resulting alpha -monoglucosyl hesperidin. From solutions containing alpha -glucosyl hesperidin and hesperidin, the present invention facilitates the production of a high alpha -monoglucosyl hesperidin content product which does not substantially contain hesperidin, beta -monoglucosyl hesperetin, and hesperetin, and has an extremely-superior water-solubility.
摘要:
An object of the present invention is to provide an immunoregulatory agent, which can be continuously ingested on daily diet and has no fear of causing side effects, and a method for regulating immunity. The present invention solves the above object by providing an immunoregulatory agent comprising lactosucrose as an effective ingredient and a method for regulating immunity using lactosucrose.