Allergen food testing

Classification of crustaceans: With the increasing popularity of seafood, reports of allergic reactions to such foods are also gradually increasing. Among them, shrimp allergens are of great concern, with 0.6% to 2.8% of allergic disease patients reported to be allergic to shrimp. At least 13 IgE binding proteins have been detected in shrimp meat, but tropomyosin has been identified as the only major allergen with a relative molecular weight between 34000-39000. According to reports, myosin is an important antigen in invertebrates such as shrimp, crab, oyster, and squid, with highly conserved amino acid sequences. Eggs and their products - Eggs are one of the most common causes of food allergies in children, with a positive rate of 35% in children and up to 12% in adults. The main allergens of the protein are egg mucin Galdl (relative molecular weight 28000), egg white protein Gald2 (relative molecular weight 44000), egg transferrin Gald3 (relative molecular weight 77000), and lysozyme Gald4 (relative molecular weight 14000); The main allergen of egg yolk is Ot yolk protein (with a relative molecular weight of 70000). According to reports, in egg allergies, protein is more likely to cause allergies than egg yolk, and egg mucin is the main allergen. The milk allergy rate in children under 2 years old is 1.6% -2.8%, and 50% -90% of children become tolerant before the age of 6. The main allergens of milk are casein (Bosd8, relative molecular weight 20000-3000), bovine serum albumin (Bosd6, relative molecular weight 67000), and bovine immunoglobulin, with casein having the strongest immunogenicity and antigenicity. Milk antigens are relatively stable and can maintain their immunogenicity after routine treatment. Peanuts and their products have attracted widespread attention from medical institutions due to the severity and high incidence of peanut allergy reactions. According to reports, peanut allergy accounts for 10% to 47% of food induced allergic reactions. The main peanut allergens are Arah1 (relative molecular weight 63500), Arah2 (relative molecular weight 17000), and other related antigens are Arah3 (relative molecular weight 60000) and Arah4 (relative molecular weight 14000). Secondary antigens include Arah6, Arah7, and actin. The ELISA inhibition test confirmed that Arah2 is the main antigen that causes cross reactions between peanuts, hazelnuts, almonds, etc. Different food processing methods have different effects on peanut antigens. It is reported that baking can increase the content of Amhl and make it easier for IgE antibody binding epitopes to bind to antibodies. Although peanuts and leguminous plants have cross reactivity proteins, clinical cross reactivity is rare. Peanut allergy is commonly seen in individuals who are allergic to eggs, milk, walnuts, etc., but no cross reactive proteins have been found between them and walnuts. In most cases, peanut allergy persists for life and can worsen. Multiple technologies such as immunoelectrophoresis, ELISA, PCR, and biosensors have been applied to the study of food allergens, which has greatly improved people's understanding of food allergens. However, further exploration is needed on the cross reactivity of food allergens, the impact of different processing processes on their allergenicity, and the allergenicity of genetically modified foods. Common allergens 1. Eight main samples: eggs, peanuts, milk, soybeans, wheat, tree nuts, fish, and crustaceans 2. Eight small samples: sesame seeds, sunflower seeds, cottonseed, poppy seeds, fruits, beans (excluding mung beans) 3. Other samples: lemon yellow, sulfite, latex

Function of testing report:

1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms

3. Used as a sales report: issuing legally effective testing reports to make consumers more confident

4. Papers and research: Provide professional personalized testing needs

5. Judicial services: providing scientific, fair, and accurate testing data

6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems

BAIJIAN testing process:

1. Telephone communication and confirmation of requirements

2. Recommend solutions and confirm quotations

3. Mail samples and arrange testing

4. Progress tracking and result feedback

5. Provide reports and after-sales service

6. If urgent or priority processing is required

Our Competitive Edge:

1. The testing industry is fully covered, meeting different testing needs

2. Fully cover the laboratory and allocate localized testing nearby

3. Engineers provide one-on-one services to make testing more accurate

4. Free initial testing, with no testing fees charged

5. Self service order delivery for free on-site sampling

6. Short cycle, low cost, and attentive service

7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc

8. The testing report is authoritative and effective, and is generally used in China