The main culprit in food corruption - Alternaria
Urinalysis test strips refer to test strips that test for bilirubin, urobilinogen, ketone bodies, ascorbic acid, glucose, protein (albumin), blood cells, PH, etc. in urine. Urine Reagent Strips,Urine Test Strip,Urine Sugar Strip Test,Visual Urine Analysis Strips Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com
With the improvement of living standards, people's requirements for food are becoming more and more perfect. Corruption and deterioration of refrigerator foods is inevitable, and where is it sacred? Why is this phenomenon occurring in cryogenic refrigeration? How do you judge the microbes that are invisible to the naked eye in the food factory that is being sold? 
Today, Xiaobang is here to explain to you the basic cause of food corruption and spoilage - Alternaria.
Alternaria production 
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Prebong product ordering catalog: Product Category product name Product number Multi-functional purification column MFC320 AC-spore phenol toxin purification column M3200 Solid standard Cross-chain (Alternariol AOH) MSS1030 Cross-chain (chain) sporopol monomethyl ether
(Alternariol monomethyl Ether AME) MSS1031 Fine oxysporin acid standard
(Tenuazonic acid TeA) MSS1032 Toxinxin standard (Tentoxin) MSS1038 Altenuene ALT MSS1043 Liquid standard Alternariol - 100μg/mL STD#7050 Sporopollen methyl ether
(Alternariolmethylether)-100μg/mL STD#7051 Tentoxin - 100μg/mL STD#7052 Alternaria
(Tenuazonic Acid) - 100μg/mL STD#7053 Alternaria
(Tenuazonic Acid) - 100 μg/mL STD#7053 Altenuene - 100 μg / mL STD#7054 Altenusin - 100 μg/mL STD#7055 Alginariol + Alternariol + Alternariol methylether + Tentoxin + Tenuazonic mixed with alginol (AOH), alginol monomethyl ether (AME), alginol (TeA) and tenoxin (TEN) Acid)in Methanol STD#7056 Full 13 C mark isotope internal standard U-[13C10] fine oxysporic acid
(Tenuazonic Acid TeA)-13C10-25 μg/mL - acetonitrile STD#7053U
Detection principle
1. pH: The pH value in the range of 5-9 is measured by the pH indicator, and the pH value of the fresh urine of a normal person is between 5-7.
2. Nitrite: The reaction is based on the reduction of nitrate to nitrite by Gram-positive bacteria in the urine. The nitrite reacts with p-aminobenzenesulfonic acid to form diazonium compounds, which are then combined with N-(1-naphthalene) )-3 aminopropanesulfonate combined with a pink color.
3. Glucose: According to the reaction principle of glucose oxidase, glucose oxidase specifically oxidizes glucose to generate glucuronic acid and hydrogen peroxide. Under the action of hydrogen peroxide, hydrogen peroxide oxidizes the indicator and turns color. .
Classification
Urinalysis test strips are divided into visual series and machine series. The visual inspection series is divided into several models according to different inspection items; the machine inspection series is divided into several models according to different applicable instruments.
1. Classification by measurement method
1) Visual inspection series
When observing the result, compare the color with the standard color code within the time specified on the color code, judge and read the result.
2) Machine test series.
For instrument operation, refer to the instruction manual of the Urine Analyzer used.
2. According to the number of measurement items
There are single-item, 2-item, 4-item and multiple test strips. Currently, 10-item or 11-item multiple test strips are most commonly used in hospitals.
3. Classification by structure
Urinalysis test strips with single-layer membrane structure and multi-layer membrane structure.