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Simulation UHT processing system based on micro liquid sample heating and application thereof

A technology for processing systems and trace liquids, applied in the preparation of test samples, etc., can solve the problems of expensive equipment, inconvenient sample processing, and limited application, and achieve simple operation, maximized heat exchange efficiency, and rapid heat transfer Effect

Inactive Publication Date: 2017-09-26
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, when studying the influence of heating temperature and heating time in basic science, it is often necessary to arrange different heating times or heating temperatures according to sample properties and comparison effects, which makes it possible to use arbitrary heating temperatures when processing samples in experiments. Or any heating time, but today's heat sterilization equipment can not fully meet this requirement
In addition, the current micro-UHT sterilizer equipment used in laboratories is expensive, and it is not widely used in China, which also makes it extremely inconvenient to process samples.

Method used

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  • Simulation UHT processing system based on micro liquid sample heating and application thereof
  • Simulation UHT processing system based on micro liquid sample heating and application thereof
  • Simulation UHT processing system based on micro liquid sample heating and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1: Exploration of temperature rise curve under different oil bath temperature conditions

[0063] Materials and equipment: liquid sample (fresh milk) 35ml, syringe, simulated UHT heating liquid carrier tube (the tube wall thickness of the liquid carrier tube body is 0.8mm; the outer diameter of the tube is 10mm, a coiled tube, the maximum liquid capacity 50ml), thermometer, wrench, oil bath (built-in simethicone oil) and ice bath (built-in ice-water mixture).

[0064] The operation method is as follows:

[0065] (1) Use a syringe to slowly inject the liquid sample into the simulated UHT heating liquid carrier tube, screw the one-way valve on one end of the heating tube, screw the thermometer on the other end and tighten it with a wrench to prevent air leakage, and place it in an oil bath at a certain temperature heating.

[0066] (2) During the heating process, measure and record the temperature every 5s. If the temperature of the oil bath is not suitable, ...

Embodiment 2

[0068] Example 2: Exploration of oil bath temperature during 62-65°C / 30min treatment

[0069] Materials and operating methods are the same as in Example 1. During operation, the temperature should be kept in the range of 60°C-68°C. According to the recorded temperature, draw the temperature rise curve, see Figure 5 .

[0070] Figure 5 In this method, the temperature of the oil bath is 71°C. Under this oil bath condition, the time required for the liquid sample in the tube to rise to 60°C is 2 minutes, and then until it is heated to 30 minutes. The temperature of the liquid sample in the tube does not exceed 68°C during the whole process, which meets the bar The heating requirements of the sterilization process. Therefore, the oil bath condition of 71°C / 32min can meet the condition requirement of pasteurization process of 62-65°C / 30min.

Embodiment 3

[0071] Example 3: Exploration of oil bath temperature during 75-90°C / 15-40s treatment

[0072] Materials and operating methods are the same as in Example 1. During operation, the temperature should be kept in the range of 70°C-95°C. According to the recorded temperature, draw the temperature rise curve, see Image 6 .

[0073] Image 6 , the oil bath temperature is 140°C. Under this oil bath condition, it takes 15s for the liquid sample in the tube to rise to 70°C, and the temperature of the liquid sample in the tube has risen to 90°C when the heating is continued for 30 seconds. In summary, 140°C / 30s can meet the heating requirements of 75-90°C / 15-40s treatment.

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Abstract

The invention discloses a simulation UHT processing system based on micro liquid sample heating and application thereof. The processing system comprises a liquid carrying tube, a heat source and a cooling source, wherein the heat source adopts an oil bath; the liquid carrying tube is made from metal or alloy; sealing devices are arranged at the two ends of the main body of the liquid carrying tube; the cooling source adopts an ice bath. The processing system prepared according to a principle that a UHT sterilization machine keeps high steam pressure and superhigh temperature state to guarantee short time rapid sterilization, the liquid carrying tube is cheap and easily available in preparation materials, simple in preparation and use methods and convenient to operate, and can meet the requirements on any heating time and any heating temperature involved in scientific experiment operation through the adjustment of oil bath temperature and oil bath time, experiments can be greatly simplified by applying the system to simulation sterilization processes, such as UHT, of micro experimental samples, and the system is convenient to use.

Description

technical field [0001] The invention relates to the field of experimental trace liquid heating devices, in particular to a simulated UHT processing system which can be used for heating trace liquid samples and its application. Background technique [0002] Ultra-high temperature instantaneous sterilization (UHT) is a sterilization process in which the temperature of the liquid is raised to 135-140°C and kept warm for 4-10s to meet the sterilization requirements. The entire sterilization process is completed instantaneously at high temperature and is fresh A common sterilization process for milk, cereal beverages, fruit juices, etc. After sterilization, the product can be stored at room temperature, and the shelf life can reach 1-6 months. At present, liquid products such as milk and beverages stored at room temperature in the market are almost all sterilized by UHT. In actual production, UHT sterilizers are used for UHT treatment of liquids, but most of the domestic UHT ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/44
CPCG01N1/44
Inventor 王存芳张雪喜李晶陈笛
Owner QILU UNIV OF TECH