Application of ice glazing technology to fermenting frozen dough steamed food

The invention relates to the application of an ice glazing technology to fermenting frozen dough steamed wheaten foods. The invention selects and proportions one of carboxymethyl cellulose, methylcellulose, sodium alginate and polyacrylate sodium into a solution of 0.05% and sprays a frozen dough blank to form a film on the surface so as to prevent water from evaporating in a refrigeration process and avoid the frost cracks of the frozen dough blank. The invention extremely improves the frost crack condition of the frozen dough and can particularly reduce the frost crack rate to 1 percent by adopting the ice glazing of 0.05% polyacrylate sodium solution without influencing the appearance and the flavor of the product.

PRODN. PROCESS OF TEXTILE RING BY POWDER METALLURGY

Sanitary status on-site rapid detection device and detecting method

The invention discloses a sanitary quality locale rapid detection device and a detection method, the device comprises an auto sampling element, a photoelectricity conversion element and a control, operation and storage display circuit element. The method comprises that: the detected parameters are selected, based on an ATP bioluminescence theory, the detected sample and three groups detection reagents of a body cell lysates agent, a bacterial cell lysates agent and a luciferase-luciferase luminescence reagent are added to a sample pool, each reagent is provided with an auto sample adding device connected with the sample pool, the auto sample adding device controls to inject different reagents to the sample pool according to the detection requirement, the sample surface cleanliness condition is gained by measuring the total ATP content, the bacteria quantity in the sample is quantitatively detected by measuring the ATP content in the bacteria cell. Compared with the traditional device, the ...

Surface cleaning detection reagent for sanitation monitoring

The utility model discloses a surface cleanliness detection reagent used in health supervision, which is based on the combination of ATP biological fluorescence method and enzymatic cycling amplification technology to realize rapid detection and field assessment of health surface cleanliness. The utility model comprises ATP releaser and a fluorescent inducer with ATP regeneration enzyme; wherein, the ATP releaser can release microorganisms, somatic cells and ATP in product residues; the fluorescent inducer can react with the ATP to produce quantitative fluorescence, and then combined with the ATP regeneration enzyme to amplify the produced fluorescent signals further. The utility model, which has the advantages of convenient use of reagent, simple operation, fast response, high sensitivity and low detection cost, is widely used in health monitoring and health field supervision in food industry, cosmetic industry, medical industry and other industries.

Fluorescence quantum dot marking method used for fast bacillus coli detection

The invention provides a fluorescence quantum dot marking method used for rapid detection of escherichia coli, which relates to a detection technique and comprises the following steps: a), the Escherichia coli is marked with a fluorescence quantum dot, the fluorescence quantum dot is coupled with an Escherichia coli antibody to be taken as a probe, and then the fluorescence quantum dot-coupled antibody is combined with the pathogenic bacteria, or the Escherichia coli, in a sample to be detected; b), as the sample to be detected is exposed to exciting light, the fluorescence quantum dot marked on the surface of the Escherichia coli emits fluorescence; c), the fluorescence signal is detected by a photosensitive element; and d), the number of Escherichia coli can be obtained in a counting mode through the image identification technology, or after the total strength of fluorescence is measured, the Escherichia coli is counted through the linear relationship between the light intensity and the ...

Apparatus and method for fast quantitative bacteria detection

The invention provides a device and a method for rapid quantitative detection of bacteria. The method comprises the following steps: the immune technique is adopted for marking bacteria in a sample with a fluorescent substance (such as FITC, fluorescence quantum dots, and the like); as a sample solution flows through a set of filtering device, the bacteria marked with the fluorescent substance settle on the surface of a filtering membrane; the fluorescent substance on the bacteria emits fluorescence by adopting laser to induce and arouse fluorescence; and the number of the bacteria in the sample can be obtained quickly and accurately by detecting the signal strength of all the fluorescence on the filtering membrane. The entire detecting process lasts for less than 30 minutes.

Sanitary status on-site rapid detection device and detecting method

The invention discloses a sanitary quality locale rapid detection device and a detection method, the device comprises an auto sampling element, a photoelectricity conversion element and a control, operation and storage display circuit element. The method comprises that: the detected parameters are selected, based on an ATP bioluminescence theory, the detected sample and three groups detection reagents of a body cell lysates agent, a bacterial cell lysates agent and a luciferase-luciferase luminescence reagent are added to a sample pool, each reagent is provided with an auto sample adding device connected with the sample pool, the auto sample adding device controls to inject different reagents to the sample pool according to the detection requirement, the sample surface cleanliness condition is gained by measuring the total ATP content, the bacteria quantity in the sample is quantitatively detected by measuring the ATP content in the bacteria cell. Compared with the traditional device,the ...

CORROSION RESISTING HARD ALLOY AND ITS MAKING METHOD

ALLOY OF IRON-COPPER-MANGANESE-BORON FOR MAKING SOLID ROTOR OF ELECTRIC MACHINE AND ITS MANUFACTURING PROCESS

Rapid detection method for protein content of foods

The invention provides a rapid detection method for protein content of foods, which is characterized in that: after a sample is pre-treated, a detection sample of 100um L is taken to be mixed with a home-made protein optical detection reagent of 2400um L, and protein in the sample has color reaction with the detection reagent; a reaction product has a maximum absorption peak at 610nm, and a standard curve is worked out by comparison with the Abs610 (absorbance) values of protein standard samples with different concentrations; and the protein content of the object to be detected can be obtained according to the Abs610 value of the sample to be detected. The detection method has convenient detection, high measuring speed, high sensitivity, low detection cost and the like, and can meet the needs for the rapid detection of the protein.

Method for quickly detecting content of glucose in starch fermentation liquor

The invention provides a method for quickly detecting the content of glucose in starch fermentation liquor, which is characterized by comprising the following steps of: pretreating a sample, mixing 100mu L of detection sample and 2,400mu L of self-made glucose optical detection reagent, and performing color development reaction on the glucose in the sample and the detection reagent, wherein a reaction product has a maximum absorption peak at 380nm; and making a standard curve by comparing the abs380 (absorbance) values of glucose standard samples with different concentrations, and obtaining the content of the glucose in the substance to be detected according to the abs380 value of the sample to be detected. The detection method has the advantages of high detection accuracy, convenience ofdetection, wide application range and the like, and can be used for quickly detecting the content of the glucose in the starch fermentation liquor.

Optical reaction tank for triphosadenine bioluminescence detection

The invention discloses an optical reaction tank used for adenosine triphosphate (ATP) bioluminescence detection, relating to the detection techniques; the optical reaction tank is composed of a cup body, a circular extension and a square lug boss; and the reaction tank is made of colorless transparent edible material with good light transmittance and is non-toxic to biological reaction. During the detection, 30uL of check sample is added to the optical reaction tank so as to realize bioluminescence intensity detection of adenosine triphosphate (ATP) through optical detection. The invention has simple design, low cost, easy use and less sample consumption, which belongs to one-time use and can be served as micro-optical reaction tanks in adenosine triphosphate (ATP) bioluminescence detection.

Surface cleaning detection reagent for sanitation monitoring

The utility model discloses a surface cleanliness detection reagent used in health supervision, which is based on the combination of ATP biological fluorescence method and enzymatic cycling amplification technology to realize rapid detection and field assessment of health surface cleanliness. The utility model comprises ATP releaser and a fluorescent inducer with ATP regeneration enzyme; wherein,the ATP releaser can release microorganisms, somatic cells and ATP in product residues; the fluorescent inducer can react with the ATP to produce quantitative fluorescence, and then combined with theATP regeneration enzyme to amplify the produced fluorescent signals further. The utility model, which has the advantages of convenient use of reagent, simple operation, fast response, high sensitivity and low detection cost, is widely used in health monitoring and health field supervision in food industry, cosmetic industry, medical industry and other industries.

Anti-interference food bacteria total number quick detection method and reagent

The utility model discloses an anti-interference fast detection method and corresponding reagent for total food bacteria amount. First, prepare the food specimen in proper sample solution according to the national standard principle; and add the non-bacteria ATP eliminator to reduce the interferences to the detection from the somatic cell ATP, the dissociated ATP and other impurities; and then carry out ATP luminous detection after orderly adding the bacteria ATP extracting agent and the bioluminescence agent; carry out the ATP standard solution luminous detection at the same time to gain the logarithm relation of the ATP density and the luminous value; at last, combine the luminous value of the food specimen to calculate the ATP density and the total bacteria amount in the sample. The method in the utility model has the advantages that the interferences of the non-bacteria ATP are completely eliminated by chemical agents without the process of bacteria increase or filtration. The method ...

Portable dry method instrument for quickly detecting optical and biochemical parameters

Quick bacteria cell cracking agent prescription

The invention discloses a reagent formula for fast cracking of bacterial cells, which relates to detection technical field. The reagent formula includes at least one acidic bacterial cell cracking reagent and at least one basic neutralization reagent, and at least one organic nutrient and at least one inorganic salt solvent which are added. The reagent has advantages of fast bacterial cell cracking speed, high adenosine triphosphate (ATP) output capacity with inhibition of adenosine triphosphate (ATP) digestive enzyme in the cell, convenient operation, easy preparation and low cost. The reagent formula is just suitable for fast cracking of bacterial cells in the fields of fast microbial detection.

Optical reaction tank for triphosadenine bioluminescence detection

The invention discloses an optical reaction tank used for adenosine triphosphate (ATP) bioluminescence detection, relating to the detection techniques; the optical reaction tank is composed of a cup body, a circular extension and a square lug boss; and the reaction tank is made of colorless transparent edible material with good light transmittance and is non-toxic to biological reaction. During the detection, 30uL of check sample is added to the optical reaction tank so as to realize bioluminescence intensity detection of adenosine triphosphate (ATP) through optical detection. The invention has simple design, low cost, easy use and less sample consumption, which belongs to one-time use and can be served as micro-optical reaction tanks in adenosine triphosphate (ATP) bioluminescence detection.

Biologic sensor for optical fast detection of surface cleanliness and its test method

The invention provides an optical biosensor used for detecting surface cleanliness rapidly, and a testing method thereof. The sensor comprises a sampling stick, a detection cavity, a liquid storage tank and a reaction chamber. The sampling stick comprises a handle, a spacing ring, a sampling swab and a pointed casing; the liquid storage tank is provided with a plurality of uniform sealing pieces which are in fixed connection through screw threads, and an ATP extractant and a neutralization reagent used for neutralizing the remaining extractant are sealed therein; and the lateral wall of the reaction chamber allows light to pass through, and a sensitive reagent is fixed at the bottom part in advance. When in detection, firstly, the sampling swab of the sampling stick is used for daubing and sampling the surface of an object to be detected; then, the pointed casing is screwed downwards; the sampling stick is inserted into the sampling detection cavity; and with the consideration of the fluorescence ...

Rapid detection method for protein content of foods

The invention provides a rapid detection method for protein content of foods, which is characterized in that: after a sample is pre-treated, a detection sample of 100um L is taken to be mixed with a home-made protein optical detection reagent of 2400um L, and protein in the sample has color reaction with the detection reagent; a reaction product has a maximum absorption peak at 610nm, and a standard curve is worked out by comparison with the Abs610 (absorbance) values of protein standard samples with different concentrations; and the protein content of the object to be detected can be obtained according to the Abs610 value of the sample to be detected. The detection method has convenient detection, high measuring speed, high sensitivity, low detection cost and the like, and can meet the needs for the rapid detection of the protein.

Rapid detection method for Vitamin C content of foods

The invention provides a rapid detection method for Vitamin C content of foods, which is characterized in that: after a sample is pre-treated, a detection sample of 100 mu L is taken to be mixed with a home-made Vitamin C optical detection reagent of 2400 mu L, and Vitamin C in the sample has color reaction with the detection reagent; a reaction product has a maximum absorption peak at 510nm, and a standard curve is worked out by comparison with the Abs510 (absorbance) values of Vitamin C standard samples with different concentrations; and the content of the Vitamin C of the object to be detected can be obtained according to the Abs510 value of the sample to be detected. The detection method has the advantages of short testing time, high accuracy, wide detection range, and the like, and is used for the rapid detection for the Vitamin C of the foods.

Biologic sensor for optical fast detection of surface cleanliness and its test method

The invention provides an optical biosensor used for detecting surface cleanliness rapidly, and a testing method thereof. The sensor comprises a cylinderical sampling stick, a detection cavity, a liquid storage tank and a reaction chamber. The cylinderical sampling stick comprises a handle, a spacing ring, a sampling swab and a pointed casing; the liquid storage tank is provided with a plurality of uniform sealing pieces which are in fixed connection through screw threads, and an ATP extractant and a neutralization reagent used for neutralizing the remaining extractant are sealed therein; and the lateral wall of the reaction chamber allows light to pass through, and a sensitive reagent is fixed at the bottom part in advance. When in detection, firstly, the sampling swab of the cynlinderical sampling stick is used for daubing and sampling the surface of an object to be detected; then, the pointed casing is screwed downwards; the cynlinderical sampling stick is inserted into the sampling ...

Composite food additive and application thereof to fermenting frozen dough steaming food

The invention relates to a composite food additive and application thereof to fermenting frozen dough steaming food. By utilizing synergy of a composite emulsifier, a composite sugar alcohol and a composite food gum, the composite food additive has a larger improvement for frozen cracking situations of frozen dough, and also has a larger improvement for smell and internal structure of prepared steamed bread products. The additive amount of the emulsifier with the smallest dough frozen cracking rate comprises 0.3% of the composite emulsifier, 0.2% of composite colloid and 0.3% of composite sugar alcohol.

Anti-interference food bacteria total number quick detection method and reagent

Test strip for measuring protein content of food and testing method thereof

The invention provides a test strip for measuring protein content of a food and a testing method thereof. The test strip comprises a filter strip, a reaction strip, a water-absorbing strip and a substrate, wherein an indicator is adsorbed in the reaction strip and can perform specific reaction with protein in a sample; and the protein content is indicated by color changing. By using the test strip, the protein is tested by a portable color measurement instrument, the testing time is short and is generally less than 30 seconds, the result is accurate and rapid field testing of the protein in the food can be realized.

Reflection type optical-fiber bio-chemical sensing device

The invention relates to a reflection fiber biochemical sensing module that is made up of light source/probe section, light path section and test bar straining frame, which are accurately located by bolt hole and screw. Three combination modules are mutual independent that is easy to change component and maintain. Light path section adopts optical fiber. Light source, fiber and photo detector are directly coupling together. It has the advantages of small volume, high flexible, and widely application in sensor field.

PRODUCTION PROCESS OF TEXTILE RING BY POWDER METALLURGY

... 本发明涉及一种用于制造纺纱粉冶钢领的Ｆｅ－Ｍｎ－Ｍｏ－Ｃ四元合金及制造方法。由于合理选择了成分和工艺，与Ｆｅ－Ｃ系合金钢相比，４０小时的磨损量减少６２％，疲劳寿命提高９６％，钢领使用寿命提高１－２倍。 ...

Reagent formula for fastly inspecting glutamic-pyruvic transaminase by optical method