Abstract:
The present invention provides styryl dyes which exert satisfactory recording properties in high-density optical recording media, and uses thereof. These are solved by providing dimethine styryl dyes having specific structures, light absorbents and optical recording media which comprise the dimethine styryl dyes, and a process for producing the dimethine styryl dyes which comprises a step of reacting an aromatic amine compound having an aldehyde group with either a 3,3-dimethylbenzoindolium compound having an active methyl group or a 3,3-dimethylindolium compound having an aminosulfonyl group.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a high-quality preparation of dried microbial fungi by which survival rate from a microbial fungal suspension is improved.SOLUTION: There is provided a method for producing a preparation of dried microbial fungi, including, when producing the preparation of the dried microbial fungi by using a microbial fungal suspension, a step of obtaining a main culture solution by proliferating the microbial fungi in a sterilized liquid medium containing nutrient, a step of obtaining an additional culture liquid by subjecting the microbial fungi obtained in the main culture solution to additional culture in the coexistence of a stabilizing base agent, and a step of collecting the preparation of the dried microbial fungi containing the stabilizing base agent by forming the additional culture liquid into a microbial fungi suspension, and drying the suspension by pulse combustion-type drying or spray drying.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing an ascorbic acid 2-glucoside anhydrous crystal-containing powder, capable of producing a powder that will not show significant solidification, even when the percentage of ascorbic acid 2-glucoside produced is less than 35 mass%.SOLUTION: A method for producing an ascorbic acid 2-glucoside anhydrous crystal-containing powder comprises: a step in which a solution containing either liquefied starch or dextrin and L-ascorbic acid is exposed to CGTase and then to glucoamylase in order to obtain a solution where the percentage of ascorbic acid 2-glucoside produced is 27 mass% or greater; a step of purifying the resulting solution such that the ascorbic acid 2-glucoside content exceeds 86 mass%; a step of precipitating the ascorbic acid 2-glucoside anhydrous crystals by controlled cooling or semi-controlled cooling; and a step of recovering, aging, and drying the precipitated ascorbic acid 2-glucoside anhydrous crystals.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing an ascorbic acid 2-glucoside anhydrous crystal-containing powder, capable of producing a powder that will not show significant solidification, even when the percentage of ascorbic acid 2-glucoside produced is less than 35 mass%.SOLUTION: A method for producing an ascorbic acid 2-glucoside anhydrous crystal-containing powder comprises: a step in which a solution containing either liquefied starch or dextrin and L-ascorbic acid is exposed to CGTase and then to glucoamylase in order to obtain a solution where the percentage of ascorbic acid 2-glucoside produced is 27 mass% or greater; a step of purifying the resulting solution such that the ascorbic acid 2-glucoside content exceeds 86 mass%; a step of precipitating the ascorbic acid 2-glucoside anhydrous crystals by controlled cooling or semi-controlled cooling; and a step of recovering, aging, and drying the precipitated ascorbic acid 2-glucoside anhydrous crystals.
Abstract:
PROBLEM TO BE SOLVED: To provide a 4-alkylresorcinol derivative which is excellent in water solubility and stability while overcomining defects inherent to 4-alkylresorcinols, is substantially tasteless, odorless, non-irritating, and free from the concern about toxicity, and can exert its physiological activity in a living body satisfactorily.SOLUTION: There is provided the 4-alkylresorcinol glycoside has a glycosyl group bonded to one or both of hydroxyl groups in a 4-alkylresorcinol.