摘要:
A method for the in situ production of an emulsifier in a foodstuff, wherein a lipid acyltransferase is added to the foodstuff. Preferably the emulsifier is produced without an increase or without a substantial increase in the free fatty acid content of the foodstuff. Preferably, the lipid acyltransferase is one which is capable of transferring an acyl group from a lipid to one or more of the following acyl acceptors: a sterol, a stanol, a carbohydrate, a protein or a sub-unit thereof, glycerol. Preferably, in addition to an emulsifier one or more of a stanol ester or a stanol ester or a protein ester or a carbohydrate ester or a diglyceride or a monoglyceride may be produced. One or more of these may function as an additional emulsifier.
摘要:
A method of measuring a cholesterol in high density lipoproteins characterized by using a polycyclic polyoxyalkylene derivative at least in the step of determining the specificity of the measurement of the target lipid.
摘要:
It is intended to provide an assay method whereby the activity of a lipid-modifying enzyme can be conveniently measured over a wide range and a drug capable of controlling a lipid-modifying enzyme with the use of this assay method. The above problem can be solved by, for example, a method of measuring the activity of a lipid-modifying enzyme which comprises the steps of (I) preparing a lipid micelle containing a biotinylated lipid and a substrate for the lipid-modifying enzyme; (II) bringing the lipid micelle prepared in the above step (I) into contact with the lipid-modifying enzyme; and (III) evaluating the activity of the lipid-modifying enzyme by applying an evaluation method using the proximity effect to the product obtained in the above step (II).
摘要:
An LDL cholesterol measurement method that can be used with a test piece is provided. The LDL cholesterol measurement method for measuring LDL cholesterol in a sample has (A) a step of providing a total-cholesterol measurement portion and a non-LDL cholesterol measurement portion for measuring non-LDL cholesterol, which is cholesterol other than LDL cholesterol; (B) a step of measuring the total cholesterol in the sample in the total-cholesterol measurement portion; (C) a step of measuring the non-LDL cholesterol in the sample in the non-LDL cholesterol measurement portion; and (D) a step of obtaining the LDL cholesterol level in the sample by subtracting the non-LDL cholesterol value measured in the step (C) from the total-cholesterol value measured in the step (B).
摘要:
A reagent for fractional measurement of small, dense LDLs without pretreatment of a specimen, which is adaptable to a rapid and convenient autoanalyzer, is provided. A method for quantitatively determining cholesterol in small, dense LDLs in a sample is further provided, comprising: a first step of eliminating lipoproteins other than small, dense LDLs in a sample in the presence of cholesterol esterase and 0.05 g/L to 1.0 g/L of a surfactant that acts on the lipoproteins other than small, dense LDLs; and a second step of quantitatively determining cholesterol in small, dense LDLs that remain after the first step.
摘要:
A method of selectively assaying components (in particular, cholesterol) in very low-density lipoprotein (VLDL) which is one of serum lipoproteins. In this assay, an enzyme reaction of lipoprotein lipase (LPL) or cholesterol esterase (CE), which are enzymes reacting well with high-density lipoprotein (HDL) and VLDL, is carried out in the presence of calixalene or its salt optionally together with one or more substances selected from among albumin and basic amino acids.
摘要:
It is intended to provide a quantification method whereby cholesterol in remnant-like lipoproteins can be conveniently and highly sensitively quantified without resorting to a procedure of separating a sample and a reagent and a kit therefor. A method for quantifying remnant-like lipoprotein cholesterol in a sample characterized by comprising, in an aqueous medium containing the sample and in the presence of a combination of specific surfactants and an enzyme hydrolyzing a phospholipid, reacting the remnant-like lipoprotein cholesterol in the sample with cholesterol ester hydrolase and cholesterol oxidase or cholesterol dehydrogenase (coexisting with an oxidized coenzyme) and then quantifying the hydrogen peroxide or the reduced coenzyme thus formed.