Adulterated peanut oil detector and adulterated peanut oil detection method

Abstract

The present invention provides an adulterated peanut oil detector and an adulterated peanut oil detection method, and pertains to the technical domain of product analysis. The detector comprises a casing, a LCD and Return key, Enter key, Up key, Down key, a power switch, a power socket, and a USB interface arranged on the casing, and a microprocessor and a power supply unit mounted in the casing and electrically connected to the components on the casing, wherein, a module cover is arranged on the top surface of the casing, and a pretreatment module and a detection module are mounted in the space under the module cover. The pretreatment module comprises a heating body and cuvette slots, and the detection module comprises an axial fan, a radiating plate, a refrigerating plate, and cuvette slots. The detection method comprises sample preheating procedure and slow refrigeration procedure. The detector and method provided in the present invention can quickly and easily detect whether the peanut oil sample is adulterated and the percentage of adulteration, and is applicable to quick on-spot detection of rapeseed oil, sunflower oil, maize oil, cotton oil, palm oil, and soybean oil, etc. admixed in peanut oil.

1 . An adulterated peanut oil detector, comprising a casing, a LCD, a return key, an enter key, a page-up key, a page-down key, a power control switch, a power socket, and a USB interface arranged on a surface of the casing; a microprocessor and a power supply unit which are arranged in the casing and electrically connected to each component on the surface of the casing, wherein, a module cover is arranged on a top surface of the casing, and a pretreatment module and a detecting module are arranged inside the casing in a space under the module cover. 
     
     
         2 . The adulterated peanut oil detector according to  claim 1 , wherein the pretreatment module comprises a main body and a heating body attached to the bottom thereof; the main body; the main body has arranged thereon two upwardly-opening cuvette slots and a temperature sensor mounted on a side thereof; the heating body and the temperature sensor are both electrically connected with the microprocessor and the power supply unit. 
     
     
         3 . The adulterated peanut oil detector according to  claim 1 , wherein, the detecting module comprises, from bottom to top, an axial flow fan, a radiating plate, a refrigerating plate, and a main body of the detecting module, with a temperature sensor attached to the main body of the detecting module; in the main body of the detecting module, two upwardly-opening cuvette slots are arranged vertically, and two through holes intersecting with the cuvette slots are arranged horizontally, with light sources/monochromators mounted in one ends of the through holes, and photoelectric detectors mounted in the other ends of the through holes; in the detecting module, the axial flow fan, radiating plate, refrigerating plate, temperature sensors, light sources/monochromators, and photoelectric detectors are all electrically connected with the power supply unit and the microprocessor. 
     
     
         4 . The adulterated peanut oil detector according to  claim 3 , wherein, ventilation holes are arranged on the bottom of the casing. 
     
     
         5 . The adulterated peanut oil detector according to  claim 3 , wherein, a printer is mounted in the casing, with a printer discharging port arranged on the top surface of the casing, the printer being electrically connected with the power supply unit and the microprocessor. 
     
     
         6 . An adulterated peanut oil detection method utilizing the adulterated peanut oil detector according to any  claim 1 , comprising the following steps: first, a cuvette containing a sample to be detected is placed into the pretreatment module and heated at a constant temperature of 40° C. for 10 minutes; then, the cuvette containing the sample to be detected is taken out and placed into the detecting module kept at a constant temperature of 3-4° C. for detection, the detection time being 25 minutes, wherein during the detection, detection signals are processed by the microprocessor to produce a detection curve, and the detection curve is compared by the microprocessor with standard curves in a standard curve database to output a detection result. 
     
     
         7 . The adulterated peanut oil detection method according to  claim 6 , wherein, the standard curves include standard curves for genuine peanut oil and standard curves for adulterated peanut oil at various proportions of adulteration. 
     
     
         8 . The adulterated peanut oil detection method according to  claim 6 , wherein, the detection result is whether the sample to be detected is genuine peanut oil and/or the proportion of adulteration for adulterated peanut oil. 
     
     
         9 . The adulterated peanut oil detection method according to  claim 6 , wherein, the detection result is output through the LCD, the USB interface, or the printer.