Introduction of Food Safety Quick Detection Box

Food safety quick detection box was produced by Beijing Zhongwei Food Hygiene technical company. It was developed by National Institute of Nutrition & Food Safety, China CDC. The specialties of box are facility, big capacity, quick detection. The reagent packages, reagent cards and reagent tubes in food safety quick detection box can be combined randomly. More than 30 detection items were studied by our company. The average analysis time of these detection methods except microbiology method is less than 10 minutes, and the slowest analysis also can be done in 30 minutes. So the quick detection box is very fit for field detection.

The detection methods come from the national standard analysis methods, AOAC methods, classical analysis methods and the newest detection methods developed in laboratory. In the quick detection box the reagents have been done reagent packages, reagent cards and reagent tubes. So the field detection time will be shortened. These reagents are very coincidental and reliable,which have been verified by the laboratory and practice. The box was equipment some easily operated and portable mini apparatus to simplify operation and shorten the test time.

More than 30 detection items have been developed by our company and other items will be developed. The operations are very simple and applied, it can simplify the work of operator. The quick detection box is a scientific and effective means to food safety inspection, quality control and field quick select of food poisoning.

Introduction of detection items

ⅠScreening and detection of acute toxicity materials

1 pesticides detection: quick detection cards methods ( national standard methods) The method is used for quickly detecting organophosphorus pesticide and carbamic acid ester in vegetable. 10 samples can be analyzed in 15 minutes. The method also can be used for the quick screening qualitative toxication in food.

2 rat drug determination: reagent packet method( used in laboratory) qualitative determination The qualitative method can detect tetramine (0.1μg/mL), fluoroacetamide (50μg/mL), sodium diphacinone(45μg/mL) and antu(20μg/mL) simultaneously. It mainly be for toxication. (Note: In the bracket is detection limit)

3 nitrite determination: quick tube method （international analysis methods） qualitative and semi- quantitative determination. It can be used in hygienic indexes detection, monitoring poisoning and quick screening qualitative and quantitative determination for toxication. The minimum detection level( MDL) is 0.025mg/mL. The analysis result can be obtained in 15 minutes.

4 methanol determination: methanol quick detecting instrument( AOAC method) quantitative determination It mainly used in detecting methanol(≥1%,v/v) in distilled wines. It’s very fit for quickly detecting methanol acute poisoning and also can be used for quick detecting the content of methanol in redistilled mixed wines.

5 arsenide and mercury determination: facility packet method( classical method) The method is mainly used in preventing and monitoring diarsenic trioxide poisoning and mercury chloride poisoning. The determination limit of arsenide is 1μg/mL, and that of mercury is 20μg/mL. The analysis result can be obtained in 30 minutes.

6 quick determination for cyanide: picric acid test paper method( national standard method) The method is mainly used in preventing and monitoring acute-toxic cyanide poisoning. The determination limit of cyanide is 15mg/kg. The analysis result can be obtained in 20 minutes.

7 acid value and peroxide value determination in edible fat: quickly detecting card method( proprietary method) semi-quantitative determination The range of acid value is 0~50meq/kg.The analysis result can be obtained in 2 minutes. The method is mainly used for monitoring hygienic indexes of edible fat and if rancidity fat is fresh or not.

8 non-edible fat determination: reagent packet method( national standard method and classical method) qualitative determination The analysis result can be obtained in 5~20 minutes. The method is mainly used for qualitative discrimination mineral oil(0.1%), tung oil(0.5%), croton tiglium oil(2.5％) in the polluted edible oil。(Note: In the bracket is detection limit)

9 clenbuterol determination: colloidal metal marked method( proprietary method) qualitative determination The analysis result can be obtained in 20 minutes.

Ⅱ quick determination of chronic damage:

10. formaldehyde determination: reagent packet or quick detecting tube method ( used in laboratory) qualitative determination. The method is fit for determination the added formaldehyde in aquatic product and other foods those need add preventive. The determination limit is 10μg/mL and the analysis result can be obtained in 3 minutes.

11. acid mine determination in vinegar: paper method( national standard method) qualitative determination The method is mainly used to analyze vinegar which has been polluted or may be polluted. The minimum detection level( MDL) is 5μg. The analysis result can be obtained in 5 minutes.

12. quick determination for SO₂: titrimetic bottle method (national standard method) The method is fit for quick determination for SO₂ which is added as food preventive. The determination limit is 0.0016g/kg. The analysis time is about 5 minutes.

13. free chlorine residual determinations: reagent packet method( based on national standard method) semi-quantitative determination The determination limit is 0.05mg/. and the analysis result can be obtained in 5 minutes. The method is fit for determination for free chlorine residual on the dishware after disinfection, on the end of pipe network and in the water of swimming pool.

Ⅲ quick determination for pseudo-faulty food:

14. determination for the content of iodine in the salt: titration method( used in laboratory) semi-quantitative The analysis method is used to discriminate true or false salt added with iodine. The detecting range is 0~40mg/kg. The analysis result can be obtained in 1 minute.

15. quick determination for total acidity in vinegar: titrimetic bottle method (based on the national standard method) The method is mainly used to detect the total acidity in vinegar. The analysis result can be obtained in 5 minutes and the error is ±0.3%.

16. quick determination for the content of total acidity and nitrogen existing in the amino acid in sauce: titrimetic bottle method (based on the national standard method) The method is mainly used to detect the total acidity in vinegar. The analysis result can be obtained in 10 minutes. The error of determination for total acidity is ±0.3% and the error of determination for nitrogen existing in amino acid is ±0.078%.

17. quick determination for pseudo-faulty monosodium glutamate: The analysis result can be obtained in 5 minutes and the error is ±2.6%.

18. quick discrimination of affusion meat: paper test method (used in laboratory) The result can be obtained in 5 minutes.

19. quick discrimination of the pure water in the bottles: electrical conductivity method (national standard method) The result can be obtained in 5 minutes.

20. quick discrimination of pseudo-faulty agarics: the capacity of absorbing water and pH value (used in laboratory) The result can be obtained in 30 minutes.

21. determination for acidity and basicity: paper test method and acidimeter method The range of determination is 0~14pH. The accuracy of paper test method is ±1pH and that of acidimeter method is ±0.2pH. The analysis result can be obtained in 1 minute. The method is used to detect if the acidity and basicity is in the regulation range.

Ⅳ quick determination for the safety of food process and storage:

22. To monitor the central temperature in the food: The range of center thermometer is -50~150℃. The distinguish rate is 0.1 ℃.The precision is ±0.1℃.The analysis result can be obtained in 5 minutes.

23. To monitor the temperature of food surface and environment far-infrared thermometer (made in U.S.) ,the range from -30℃ to 200℃, the distinguish rate is 0.5 ℃ and the precision is ±0.1℃.The result can be obtained within 1second.It mainly applied to monitor the temperature of food which in the process of production, storage, convey, and distribution under the HACCP system.

24. To monitor the ultraviolet radiation intensity in the disinfection room: portable radiation detector, which worked as the method issued by ministry of heath. It can complete all the items prescribed in the disinfection criterion of ministry of health within 10 minutes.

25. The determination of active chlorine: quick determination card method, it is a semi-quantitative method. The determination range from 10 mg/L to 300 mg/L. The result can be obtained within1 minute. It mainly used to monitor the content of active chlorine of the disinfectant contain chlorine .to ensure the disinfectant was made accurately and achieve the anticipate disinfection effect.

Ⅴ The quick test of microorganism

26. The detection of Coliform bacteria on dishware: paper test method Sampling on field within 3 minutes and the result can be obtained after the sample cultivated in attemperator for 24h. It mainly apply to monitor the sanitary status of the dishware.

27. The detection of Coliform bacteria in food: detection card method, it apply to the quick test of Coliform bacteria of milk, freezing beverage and sauce. The result can be obtained within 15h to 24h and the traditional method needs nearly a week.

28. The detection of aerobic bacterial count in food: detection card method The result can be obtained within 18hours to 24hours as this method and it need 48h as the traditional method.

29. The detection of mold and yeast in food: paper test method, the result can be obtained within 48h and the traditional method needs nearly a week.

The introduction of assistant equipment

1. conductance meter It not only apply to distinguish the true and false of purified drinking water ,but also to determine if the water can be used to experiment. The conductace meter with pen shape is portable and credible.

2. Adjustive manual liquid shift apparatus: It can be operated easily and be used expediently and suit for field work. It be recommend because its facility and durable characteristic.

3. mini-ultrasonic wave extraction, dissolution and washing apparatus: The apparatus is small and portable. It apply to pick-up the examination ingredient form the sample and accelerate the dissolution of hard solid sample and solid reagent. It also can be used to accelerate the washing speed of experimental apparatus and improve the cleanness of the washed apparatus.

4. mini-centrifugal machine The machine is small and portable. To some sample, it can shorten the operation of pick-up, deposition and reduce the interaction of impurity and broaden the test range of food sample.

Purchasing and Selling

More than 600 institutions and factories purchased quick detection boxes. They all turned up the thumbs to the products. And they considered the quick detection boxes can meet the requirements of the progressive markets.

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