The invention discloses an NTx (Naltrexone) detection test strip. The NTx detection test strip comprises a chromatography membrane and a conjugate pad; an immunolabelled NTx antibody and an immunolabelled first antibody are loaded on the conjugate pad; the chromatography membrane is provided with an NTx protein covered detection line and a second antibody covered colorimetric line along a liquid chromatography direction. When a sample is detected, the colorimetric line correspondingly displays the chroma of specific protein concentration after the second antibody is specifically combined withthe first antibody; NTx protein on the detection line and the NTx protein in the sample are competitively combined with the immunolabelled NTx antibody and the color developing depth of the detectionline and the colorimetric line is directly compared so that semi-quantitative detection of the NTx protein is realized. The invention discloses a preparation method of the NTx detection test strip; the preparation method is used for preparing an NTx protein semi-quantitative detection test strip which is rapid and sensitive in detection and does not depend on an instrument. The invention disclosesan NTx detection kit; the NTx detection kit comprises the NTx detection test strip and can provide effective information for early diagnosis and treatment of osteoporosis.

NTx (Naltrexone) detection test paper, kit and preparation method thereof

The invention discloses a testing identifying method for rapidly measuring the content of amylose in flour. The method comprises the steps that standard coloration comparison card test paper and standard colourimetric card test paper are prepared, wherein according to the step of preparation of the standard coloration comparison card test paper, an amylopectin standard solution is prepared from amylopectin according to proportion, an amylose standard solution is prepared from the amylose according to proportion, then a standard mixing solution is prepared from the amylose standard solution and the amylopectin standard solution according to volume proportion, and the standard coloration comparison card test paper is prepared from the standard mixed solution and an iodine reagent; the iodine reagent is prepared from iodine and potassium iodine, white test paper is dipped with the iodine reagent, and the standard colourimetric card test paper is prepared after the test paper is dried; a flour solution to be measured is dripped in the middle of the test paper, then the test paper is compared with the standard coloration comparison card test paper, and therefore the content of the amylose in the flour solution can be measured and identified.

Testing identifying method for rapidly measuring content of amylose in flour

The invention provides benzoyl peroxide test paper The benzoyl peroxide test paper comprises a test paper substrate and a detection layer arranged on the test paper substrate, wherein the detection layer comprises a detection base layer and a color development layer, and the color developing layer is formed by drying the detection base layer after infiltrated in a color developing solution; the color developing solution comprises the following components calculated by mass concentration: 03 to 2g/L of thiomidone, 005 to 05g/L of Tween-80, 01 to 15g/L of 3,3,5,5-tetramethylbenzidine, 3 to15g/L of a methyl vinyl ether-maleic anhydride copolymer, 500 to 800g/L of absolute ethanol, and the balance of pure water The benzoyl peroxide test paper disclosed by the invention has simple and convenient operation, short reaction time, low detection limit, high sensitivity, high accuracy, low single detection cost and long shelf life

Benzoyl peroxide test paper and preparation method and detection method thereof

The invention relates to a starch-potassium iodide reagent and a preparation method of the starch-potassium iodide reagent as well as test paper, a kit and a semi-quantitative detection method of benzoyl peroxide in flour. The preparation method comprises the following steps: (1) carrying out starch treatment: carrying out degreasing oxidization treatment on starch; (2) preparing the reagent: mixing the starch obtained by the step (1) with cold water; mixing with hot water with the temperature more than 90 DEG C; heating until a mixture is clarified, and then cooling; after cooling to 45 DEG C to 55 DEG C, adding sodium hydrogen carbonate and sodium carbonate to form a buffering system; adding potassium iodide and uniformly mixing. The starch-potassium iodide test paper provided by the invention is simple and convenient to prepare, low in preservation requirements and long in guarantee period, and can be used for detecting the benzoyl peroxide in a system. The detection method of the benzoyl peroxide, provided by the invention, can realize detection of the benzoyl peroxide in the flour; the detection limit is 0.02g/L; a detection process is simple, convenient and rapid, and the benzoyl peroxide in the flour can be rapidly detected on site.

Starch-potassium iodide reagent and preparation method of starch-potassium iodide reagent as well as test paper, kit and semi-quantitative detection method of benzoyl peroxide in flour

The invention discloses a biological sensor electrode for detecting residues of diversified veterinary medicines. The biological sensor electrode comprises a rod-shaped electrode carrier. The rod-shaped electrode carrier is made of organic insulating materials, a base conducting material layer is coated on the cross section of the lower end of the rod-shaped electrode carrier, an electrode is formed, and a reaction layer which at least comprises a nano-particle layer and an electrostatic adsorption antibody layer is manufactured on the outer surface of the conducting material layer of the electrode; the base conducting material layer is one of a metal material layer, a carbon electrode layer and a silver electrode layer, and an anti-interference layer is further sandwiched in the middle of the reaction layer; the nano-particle layer comprises electrochemically inert macromolecular compounds. The biological sensor electrode has the advantages that the biological sensor electrode is reasonable in composition and can be conveniently and reliably used, the residual veterinary medicine detection sensitivity, stability and anti-interference capacity can be improved, and the like.

Biological sensor electrode for detecting residues of diversified veterinary medicines

The invention discloses detection test paper for detecting benzoyl peroxide in flour and preparation method of the detection test paper. The test paper comprises a test strip and a standard colourimetric card, wherein the standard colourimetric card comprises 10 color lumps with corresponding concentration gradients of benzoyl peroxide from shallow to deep respectively 0mg/L, 12 mg/L, 36 mg/L, 60mg/L, 84 mg/L, 108 mg/L, 132 mg/L, 156 mg/L, 180 mg/L and 228 mg/L. The test strip comprises a substrate and a color-developing layer adhered on the front end of the substrate, the color-developing layer has a test function, the substrate is made of a PVC (polyvinyl chloride) sheet, and the color-developing layer is prepared by immersing a cellulose acetate film in a color-developing mixed solution consisting of 5-10 percent of potassium iodide, 0.2-0.8 percent of soluble starch and 2-8 percent of sodium carbonate and then drying in vacuum at a temperature of 40-80 DEG C for 20-50min. According to the comparison of the color-developing degree of a sample to be detected and the standard colourimetric card, the content range of the benzoyl peroxide can be rapidly judged. The detection test paper disclosed by the invention is simple, rapid and visual in operation when being used for detecting the benzoyl peroxide remained in the flour, and has high detection sensitivity and accuracy.

Detection test paper for detecting benzoyl peroxide in flour and preparation method of detection test paper

The present invention relates to a preparation method of an electrochemical sensor for sulfanilamide veterinary drug residue detection. The preparation method comprises: adopting multi-walled carbon nano-tubes being subjected to an oxidation treatment with a mixed acid as a filling material, adopting a Nafion solution as a dispersion agent of the multi-walled carbon nano-tubes, and adopting a hydroxyl carboxyl reactant as a cross-linking agent to obtain a Nafion-multi-walled carbon nano-tube functionalized treatment nanometer material; adopting platinum wire and a soft glass pipe to prepare a platinum microelectrode, carrying out chemical etching, taking an appropriate amount of the Nafion-multi-walled carbon nano-tube functionalized treatment nanometer material, and using a grinding pressing filling method to prepare the embedded Nafion-multi-walled carbon nano-tube microelectrode; and simplifying the three-electrode into the two-electrode system, adopting the Nafion-multi-walled carbon nano-tube microelectrode as a work electrode, and adopting the platinum sheet electrode as a reference electrode to obtain the electrochemical sensor for sulfanilamide veterinary drug residue detection. Compared with the conventional macroscopic electrode glass-carbon electrode, the electrochemical sensor for sulfanilamide veterinary drug residue detection of the present invention has advantages of fast response, high signal-to-noise ratio, high sensitivity, good reproducibility, and high accuracy.

Preparation method of electrochemical sensor for sulfanilamide veterinary drug residue detection

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Detection test paper for detecting benzoyl peroxide in flour and preparation method of detection test paper

Preparation method of electrochemical sensor for sulfanilamide veterinary drug residue detection