54 results about "Pork sample" patented technology

The invention discloses a visual detecting method for a pork maturity condition. The visual detecting method comprises the following steps: (1) judging a maturity category of a pork sample according to physical and chemical indexes of the pork sample; (2) scanning the pork sample by using a near-infrared hyperspectral meter to obtain a three-dimensional hyperspectral image; (3) extracting spectral images of the pork sample under five characteristic wavelengths; (4) establishing a three-layer neural network; (5) scanning the to-be-detected pork sample by using the near-infrared hyperspectral meter, and obtaining the maturity category result of each pixel of the three-dimensional hyperspectral image of the to-be-detected pork sample by virtue of the three-layer neural network; (6) respectively representing three maturity categories with three colors to obtain a distribution diagram of the pork maturity condition of the to-be-detected pork, and judging the pork maturity condition. The visual detecting method for the pork maturity condition disclosed by the invention can be used for quickly judging the grade of maturity of livestock meat without damages, so that both physical and chemical indexes are not needed to be measured, and a professional training spectral model is also not needed.

The invention discloses a water-saving brushing device for blind roads, which comprises a car body and a water pump; rollers are arranged under the car body; a scrubbing barrel is arranged on the left side of the car body, and the brushing barrel is vertically arranged and the top of the scrubbing barrel is connected to the bottom of the car body. The surface is fixedly connected; the lower end of the brushing cylinder is provided with a scrubbing tank; the brushing cylinder is provided with a brushing roller; the left inner wall of the brushing cylinder is provided with a water spray head; the water spray head is connected with a water outlet pipe, and the water outlet pipe extends To the top of the car body and connected with a water pump. The present invention is equipped with a crushing cylinder and a crushing blade group whose distribution density gradually increases from top to bottom in the crushing cylinder to efficiently crush pork samples, which is convenient for subsequent extrusion of pork; the present invention is provided with a hydraulically driven extrusion disc And the squeeze cylinder, the crushed pork sample is quickly squeezed, and the water content of the pork is measured with a measuring cylinder, which is more efficient than the traditional squeeze of the whole pork sample.

The invention provides a method for detecting the freshness of pork by using FAIMS. The steps include: (1) taking a pork sample to make a pork sample liquid; (2) FAIMS detection: taking a pork sample liquid and adding it to a sampler, controlling the sampler The temperature is 20°C to 90°C to volatilize the pork sample liquid and form an equilibrium gas of trimethylamine, and then pass a carrier gas with a flow rate of 500mL / min to 3500mL / min into the equilibrium gas of trimethylamine to form a mixed gas , input the mixed gas into the FAIMS detector for detection, and control the pressure in the FAIMS detector to be 0.5bar-2.5bar. The method for detecting the freshness of pork by FAIMS described in the present invention obtains the standard for evaluating the freshness of pork by detecting the ion current value of the characteristic peak of trimethylamine in the process of changing the freshness of the pork sample, which has high accuracy and is easy to operate , low detection cost.

The invention discloses a rapid detection method for zilpaterol residues in pork, belonging to the field of food detection. The present invention uses density functional theory and the standard solution of zilpaterol to determine the Raman characteristic peak of zilpaterol; the Raman characteristic peak signal is strong and the characteristic peak of peak shape is 1113cm ‑1 Establish quantitative analysis curve Y=5214.7X‑35.844, correlation coefficient R 2 It is 0.9355; Afterwards, the pork sample is pretreated and extracted with an extraction solvent to obtain a test solution; then, according to the Raman spectrum and the standard curve of the test solution, the concentration of zilpaterol in the test sample is obtained by testing. The minimum detectable concentration of zilpaterol in pork detected by the method of the present invention is 5 mg / L, qualitative and quantitative analysis can be performed on the residue of zilpaterol in pork, and the detection time of a single sample is controlled within 3 minutes.