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Photodynamic sterilizing device for foods and application of photodynamic sterilizing device for foods

A sterilization device and photodynamic technology, applied in the fields of application, food preservation, food science, etc., can solve the problems of small irradiation area, no adjustment of temperature and humidity, small space, etc., achieve uniform and uniform light intensity, reduce the difference in results, The effect of irradiating a large area

Pending Publication Date: 2021-02-02
FOSHAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing devices used for photodynamic sterilization experiments generally have small space, a single wavelength of corresponding photosensitizer, a small irradiation area, few samples that can be processed, and low experimental efficiency; It is difficult to calculate accurately, and the stable range of controllable light is small; at the same time, there is no effect of adjusting temperature and humidity, and it is impossible to explore the influence of temperature and humidity on the sterilization efficiency of the device; and the inside of the device cannot be sterilized before the experiment is carried out. For sterilization experiments, it will affect the experimental exploration

Method used

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  • Photodynamic sterilizing device for foods and application of photodynamic sterilizing device for foods
  • Photodynamic sterilizing device for foods and application of photodynamic sterilizing device for foods
  • Photodynamic sterilizing device for foods and application of photodynamic sterilizing device for foods

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Embodiment 1

[0034] The above device was subjected to photodynamic sterilization experiment:

[0035] (1) Chemical reagents and instruments:

[0036] Salmonella enteritidis, Salmonella typhimurium, food grade sodium magnesium chlorophyllin, food grade curcumin, sodium chloride, self-made photodynamic sterilization device, microplate reader, tryptone liquid medium (TSB) , bismuth sulfite agar (BS), constant temperature incubator, constant temperature shaking shaker, biological safety cabinet, coating rod, disposable petri dish.

[0037] (2) Preparation of strains

[0038] The strains used in this experiment are the mixed strains of Salmonella enteritidis (No. CM1.345) and Salmonella typhimurium (No. CM1.237), which were purchased from Guangdong Microbial Culture Collection Center) and frozen in glycerol tubes. Before the experiment, place the mixed strains stored in the -80°C refrigerator in a 4°C refrigerator to thaw, take out 100 μL, mix and shake well in 9ml TSB enrichment solution, an...

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Abstract

The invention belongs to the technical field of food sterilization and discloses a photodynamic sterilizing device for foods and application of the photodynamic sterilizing device for foods. The photodynamic sterilizing device for the foods comprises a hollow box body, wherein an openable / closeable front door or door curtain is arranged on one side face of the box body, a plurality of LED lamp tubes are arranged at the internal top of the box body, all the lamp tubes are connected in series, and each lamp tube can be disassembled freely; the device further comprises a photosensitizer; the LEDlamp tubes are LED lamp tubes emitting red light or LED lamp tubes emitting blue light; and the photosensitizer is either sodium magnesium chlorophyll or curcumin. According to the device disclosed bythe invention, the intensity and stability of output light are good, and the light intensity of all places of the same horizontal plane inside the device is unified and uniform; and the LED lamp tubes in the device can be disassembled freely, and the LED lamp tubes of different light emitting strength can be selected. The device disclosed by the invention is simple and is relatively low in cost.According to the device disclosed by the invention, the efficiency of sterilization is high, and original flavors, texture and nutrients of foods are not destroyed. The device disclosed by the invention is applied to the field of food sterilization.

Description

technical field [0001] The invention belongs to the field of food safety, and in particular relates to a food photodynamic sterilization device and its application. Background technique [0002] At present, the sterilization methods in the food industry are mainly divided into two categories, one is the more traditional thermal sterilization technology, and the other is the non-thermal sterilization technology. Thermal sterilization technology has the characteristics of early application, mature technology and thorough sterilization in the food industry. However, it generally destroys the original flavor, texture and nutrition of food. Therefore, with the improvement of people's living standards, a kind of Sterilization technology that can ensure that the original flavor, texture and nutrition of food are not damaged while sterilizing thoroughly has gradually become a research hotspot. Photodynamic sterilization technology is a kind of non-thermal sterilization technology. ...

Claims

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Application Information

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IPC IPC(8): A23L5/20A23L5/30A23L3/26
CPCA23L5/20A23L5/30A23L3/26
Inventor 王敬敬曾巧辉区灿盛王思婷范素芬胡炜楠
Owner FOSHAN UNIVERSITY
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