摘要:
A sample solution is stored in a total reflection cell, and a measuring beam is introduced from an incident optical system to be totally reflected, for measuring a total reflection absorption spectrum. Hydrogen peroxide contained in the sample solution is determined on the basis of absorbance at the position of any absorption peak of the spectrum which is present at 1200 to 1500 cm.sup.-1 or 2600 to 3000 cm.sup.-1. Hydrogen peroxide contained in an aqueous solution can be simply quantitatively analyzed through optical analysis.
摘要:
An excitation beam generated from a light source is separated into a measuring beam and a reference beam by an optical path adjusting optical system including a beam splitter, so that the measuring beam is applied to a sample in a cell. Raman scattering light which is generated from the sample is detected by a spectral detector including a spectroscope through a scattering light path adjusting optical system and a wavelength selector. In a spectrum obtained by the spectral detector, a peak of Raman scattering in which wavenumber shift from the wavelength of the excitation beam is present at 800 to 920 cm.sup.-1 is employed to make quantitative measurement of hydrogen peroxide. Hydrogen peroxide contained in an aqueous solution can be simply quantitatively analyzed through optical analysis means.
摘要:
In order to quantitatively measure an Amadori compound by a simple optical method utilizing light scattering, a sample containing an Amadori compound which is stored in a cell is irradiated with excitation light from an He--Ne laser unit so that scattered light from the sample is received and separated into its spectral components for obtaining a light scattering spectrum, and a light scattering peak existing at 820 to 840 cm.sup.-1, 1655 to 1660 cm.sup.-1, 2000 to 2020 cm.sup.-1, 2080 to 2100 cm.sup.-1, 2460 to 2470 cm.sup.-1 or 2530 to 2600 cm.sup.-1 in shift wavenumber with respect to the excitation wavelength in the light scattering spectrum is detected by a detector. The saccharide concentration or the saccharification ratio of the Amadori compound is measured by a calibration curve through the peak intensity or the peak integral value of the light scattering peak.
摘要:
A measuring method by which carboxymethylarginine can be measured with ease and with a high degree of precision is disclosed. The measuring method is a method of measuring carboxymethylarginine in a sample. The method includes treating the sample with a pretreatment agent including urea; and measuring carboxymethyl arginine in the pretreated sample by an immunological method.
摘要:
A new orally administerable DHEA production promoter is provided. A composition containing an extract of at least one selected from the group consisting of plants of Rosaceae Crataegus, Saururaceae Houttuynia, Vitaceae Vitis, and Compositae Anthemis is provided as a DHEA production promoter. The extract may be of one of the plants or extracts of two or more of them may be used in combination. A specific example is preferably a mixture of extracts of all four of the aforementioned plants. This DHEA production promoter also can be used as, for example, an anti-aging agent such as a skin improver as well as a pharmaceutical agent such as an immunostimulator, an antidiabetic agent, an anti-osteoporosis agent, an antiarteriosclerotic agent, an anti-obesity agent, a sleep-promoting agent, and a central nervous system depressant.
摘要:
The present invention relates to a novel enzyme (&agr;-GARE) which releases an amino acid residue having a glycated &agr;-amino group (&agr;-GA) from a glycated protein etc. and to bacterial strains producing the same. Examples of the bacterial strains include Sphingomonas parapaucimobilis KDK1004 (FERM BP-7041). The &agr;-GARE is contained in the culture supernatant of this strain and &agr;-GA can be released from a glycated peptide by using the same, as shown in FIG. 1.
摘要:
A plastic material, controlled at a desired temperature, is fed on an upstream side of a gap between a pair of rotating forming rolls arrayed almost in parallel and controlled at a desired temperature from a flat die connected to an extruding machine and having a slit outflow portion. The plastic material is pressed and formed into a sheet by the forming rolls therebetween while forming a bank or an accumulation of the plastic material on an upstream side of the gap of the forming rolls and is carried out on a downstream side of the gap. The bank quantity monitoring is performed by measuring a temperature of the sheet carried out through the gap of the forming rolls and estimating the quantity of the bank in accordance with measured temperature information. The sheet formation is performed by measuring a temperature of the sheet carried out through the gap of the forming rolls and controlling various forming conditions according to a measured temperature information. The sheet temperature measurement is performed by measuring a temperature of the sheet by directing said non-contacted temperature measuring means against an inner part of a wedge-shaped space formed by a surface of the sheet carried out of the gap and a surface of the forming roll facing on the surface of the sheet at a slight gap therebetween.
摘要:
The present invention relates to a novel enzyme (&agr;-GARE) which releases an amino acid residue having a glycated &agr;-amino group (&agr;-GA) from a glycated protein etc. and to bacterial strains producing the same. Examples of the bacterial strains include Corynebacterium ureolyticum KDK1002 (FERM P-17135) and Pseudomonas alcaligenes KDK1001 (FERM P-17133). The &agr;-GARE is contained in the culture supernatant of these strains and &agr;-GA can be released from a glycated peptide by using the same, as shown in FIG. 1.
摘要:
A novel fructosyl amino acid oxidase derived from genus Fusarium or Gibberella, a process for producing the enzyme, an assay of an amadori compound using the enzyme, a reagent or a kit containing the enzyme, a process for producing fructosyl lysine and/or fructosyl N.sup..alpha. -Z-lysine as a substrate of a fructosyl amino acid oxidase, which is useful for screening and/or culturing a microorganism capable of producing the enzyme, and a medium containing fructosyl lysine and/or fructosyl N.sup..alpha. -Z-lysine for screening and/or culturing a microorganism capable of producing a fructosyl amino acid oxidase is provided.
摘要:
An expression inhibitor of a nuclear transcription factor AP-1 is provided that is excellent in safety and activity of inhibiting the expression of a nuclear transcription factor AP-1. The AP-1 expression inhibitor of the present invention is characterized by containing chamaemeloside. In the present invention, chamaemeloside may be contained as an extract of Roman chamomile or German chamomile. The chamaemeloside is contained in Roman chamomile or German chamomile. Conventionally, Roman chamomile and German chamomile have been used as cosmetic materials and herb teas and have no problems in safety. An extract of Roman chamomile or German chamomile and chamaemeloside inhibit the expression of the AP-1 at the gene level (see FIG. 2) and therefore are excellent in an inhibition effect as compared to a conventional inhibitor that inhibits binding of the AP-1 to DNA.