Melamine detection Services
Melamine detection
Melamine (chemical formula: C3H6N6), commonly known as melamine and protamine, is a triazine nitrogen-containing heterocyclic organic compound, which is used as a chemical raw material. It is a white monoclinic crystal, almost tasteless, slightly soluble in water, soluble in methanol, formaldehyde, acetic acid, hot ethylene glycol, glycerol, pyridine, etc., insoluble in acetone, ethers, harmful to the body, and cannot be used in food processing or food additives.
Melamine (chemical formula: C3H6N6), commonly known as melamine and protamine, is a triazine nitrogen-containing heterocyclic organic compound, which is used as a chemical raw material. It is a white monoclinic crystal, almost tasteless, slightly soluble in water, soluble in methanol, formaldehyde, acetic acid, hot ethylene glycol, glycerol, pyridine, etc., insoluble in acetone, ethers, harmful to the body, and cannot be used in food processing or food additives.
WSCT world standard testing can provide melamine testing services for the following products:
Milk and dairy products (raw milk, liquid milk, yogurt, cheese, cream, condensed milk, etc.)
Infant dairy products (infant formula milk powder, other types of infant dairy products)
Food containing milk powder (biscuits, cakes, chocolate, milk candy, ice cream, etc.)
Bean products, wheat protein and products, etc
Auxiliary materials for food processing (including starch wrapping powder, bread crumbs, gluten, etc.)
pet food
feed
Eggs
meat product
Animal viscera
aquatic product
Other products
Melamine detection method:
○ high performance liquid chromatography
○ liquid chromatography mass spectrometry / mass spectrometry
○ gas chromatography mass spectrometry
Detection of polycyclic aromatic hydrocarbons
Polycyclic aromatic hydrocarbons, PAHs for short, contain aromatic compounds with more than one benzene ring, which are produced in industrial production, organic pyrolysis or incomplete combustion, many of which have been proved to have carcinogenic toxicity.
Polycyclic aromatic hydrocarbons (PAHs) widely exist in the natural environment of human life, such as atmosphere, water, soil, crops and food. At present, there are about 200 kinds of polycyclic aromatic hydrocarbons known. PAHs in the atmosphere exist in the form of gas and solid. Among them, 2-3 ring PAHs with small molecular weight mainly exist in the form of gas, 4 ring PAHs have basically the same distribution in the gaseous and granular States, and the large molecular weight PAHs with 5-7 rings mostly exist in the form of particles. Polycyclic aromatic hydrocarbons in water can be in three states: adsorbed on suspended solids; Dissolved in water; In emulsion state. There are more than 20 known polycyclic aromatic hydrocarbons in surface water. Polycyclic aromatic hydrocarbons were also detected in groundwater and seawater. The concentration of PAHs in soil is generally in the range of 10-10 µ g/kg, and the concentration of PAHs in suburban soil is higher, up to 10-10 µ g / kg. Soil pollution will inevitably affect the growth of crops The content of BPA in vegetables is the most in leaf vegetables, followed by root vegetables and fruit vegetables
Detection method of polycyclic aromatic hydrocarbons:
With the continuous progress of science and technology, the detection methods of polycyclic aromatic hydrocarbons are also constantly developing and changing, from the earliest column adsorption chromatography, paper chromatography, thin layer chromatography (TLC) and gel permeation chromatography (GPC) to the current gas chromatography (GC), reversed phase high performance liquid chromatography (RP-HPLC), as well as ultraviolet absorption spectrum (UV) and emission spectrum (including fluorescence, phosphorescence and low-temperature luminescence), as well as mass spectrometry Nuclear magnetic resonance and infrared spectroscopy, as well as the combination of various analytical methods. Spectrophotometry and reversed phase high performance liquid chromatography are commonly used. In recent years, the analytical methods of polycyclic aromatic hydrocarbons have developed rapidly, and many new analytical techniques have emerged, such as microwave-assisted solvent extraction, solid-phase microextraction, supercritical fluid and so on.
Gb/t 5009.27-2003 determination of benzo (a) pyrene in food
Acrylamide detection
Acrylamide is a white crystalline chemical, which is the raw material for the production of polyacrylamide. Polyacrylamide is mainly used for water purification, pulp processing and inner coating of pipes. Starch food is easy to produce acrylamide when cooked at high temperature (>120 ℃). Studies have shown that the human body can contact acrylamide through the digestive tract, respiratory tract, skin and mucosa, and drinking water is an important way of contact. In April, 2002, researchers from the Swedish National Food Administration and Stockholm University took the lead in reporting that acrylamide was detected in some fried and barbecued starch foods, such as French fries and potato chips, and the content exceeded the maximum allowable limit in drinking water by more than 500 times. Later, Norway, Britain, Switzerland and the United States also reported similar results
Acrylamide detection method:
Gb/t 5009.204-2005 determination of acrylamide content in food gas chromatography-mass spectrometry (GC-MS) method
Detection of phthalates
Phthalates, plasticizers, also known as plasticizers. It is a polymer material additive widely used in industry. Adding this substance in plastic processing can enhance its flexibility, make it easy to process, and can be legally used for industrial purposes. Since May 2011, DEHP, DINP, DnOP, DBP, DMP, DEP and other six phthalate ester plasticizer components have been detected in Taiwan food, and DIDP has been detected in drugs. As of June 8, 961 foods containing plasticizers have been detected in Taiwan. On June 1, the Ministry of Health issued an urgent announcement to include phthalates (also known as phthalates) in the list of non edible substances that may be added illegally and food additives that are prone to abuse. At present, plasticizers have become the focus of management and control of national regulatory departments.
Plasticizer testing service:
16P
Dimethyl phthalate (DMP), diethyl phthalate (DEP), diisobutyl phthalate (DiBP), dibutyl phthalate (DBP), di (2-methoxy) ethyl phthalate (dmep), di (4-methyl-2-amyl) phthalate (BMP), di (2-ethoxy) ethyl phthalate (deep), dipentyl phthalate (DPP), Dihexyl phthalate (dhxp) Butyl benzyl phthalate (BBP), di (2-butoxy) ethyl phthalate (dbep), dicyclohexyl phthalate (DCHP), di (2-ethyl) hexyl phthalate (DEHP), diphenyl phthalate (DPHP), di-n-octyl phthalate (DnOP), di-nonyl phthalate (DNP)
6P
Dibutyl phthalate (DBP), benzyl butyl phthalate (BBP), hexyl phthalate (2-ethyl) (DEHP), diisopropyl phthalate (DINP), dioctyl phthalate (DnOP), diisopropyl phthalate (DIDP
7P
Dibutyl phthalate (DBP), benzyl butyl phthalate (BBP), hexyl phthalate (2-ethyl) (DEHP), diisopropyl phthalate (DINP), dioctyl phthalate (DnOP), diisopropyl phthalate (DIDP), di-n-hexyl phthalate (dnhp)
Phthalate ester detection method:
Gb/t 21911-2008 determination of phthalates in food
Service process
Consult customer service → confirm the test plan → fill in the application form → send samples → pay the test fee → test → send reports and invoices
