Canned Food Testing
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Note: this service is for Research Use Only and Not intended for clinical use.
Alfa Chemistry Testing Lab is the world's leading third-party testing company, which provides customized testing solutions for canned meat, canned fruits and vegetables, canned aquatic products for manufacturers, distributors and individuals.
Food canning is to put the processed food into tinplate cans, glass cans or other packaging containers, sealed and sterilized, so that the food in the tank is isolated from the outside world and will no longer be contaminated by microorganisms. At the same time, most of the microorganisms in the tank (that is, spoilage bacteria and pathogenic bacteria that can grow in the tank environment) were killed and the enzyme was inactivated, thus the main cause of food failure was eliminated, and the preservation method of long-term storage at room temperature was adopted. Thus, the canned food, manufactured through this process, can be preserved at room temperature for a long time. The inventor of canning technology was the French Nichols Apppert. In 1795, the French government offered a large reward for the preservation of military food for the need of war. Nichols Apppert's research succeeded in 1804. Nowadays, as a convenient, healthy, nutritious and safe food, canned food is more and more widely recognized by consumers, and the demand for it is increasing year by year. Ensuring the quality and safety of canned food is not only a prerequisite for canned products to enter the market smoothly, but also a guarantee for consumers to enjoy safe and delicious food.
Alfa Chemistry's testing solutions for canned food include but are not limited to:
| Services | Testing Items |
|---|---|
| Physical and chemical indicators | Nutrition labels, nitrite, benzopyrene, polychlorinated biphenyls, moisture, lemon yellow, sunset yellow, benzoic acid, sorbic acid, carmine, temptation red, butyl hydroxy anisole (BHA), total sugar, total acid, etc. |
| Heavy metals | Dozens of elements such as lead, cadmium, mercury, chromium, arsenic, sodium, magnesium, aluminum, calcium, iron, nickel, copper, zinc, strontium, molybdenum, selenium, etc. |
| Microorganism | Commercial sterility, total number of colonies, coliforms, molds and yeasts, Staphylococcus aureus, Shigella, Salmonella, hemolytic streptococcus, etc. |
| Pesticide residue | More than 500 tests such as organophosphorus, organochlorine, pyrethroids, and carbamates. A pesticide residue package is available. |
| Veterinary drug residue | Sulfonamides, nitrofurans, quinolones, clenbuterol, malachite green, colorless malachite green, crystal violet, colorless crystal violet, diethylstilbestrol, olaquindox, oxytetracycline, tetracycline, chlortetracycline, etc. |
| Others | Canned container leak test, canned container integrity rate, canned food pH, soluble solids content in canned food, canned food sensory, solid content, canned container tightness, etc. |
Alfa Chemistry's testing services are performed in accordance with:
FDA
Alfa Chemistry Testing Lab provides customized canned food testing solutions and authoritative third-party testing reports for manufacturers and consumers according to relevant industry standards. For more information about canned foods testing, please feel free to contact Alfa Chemistry's experts.
Techniques for canned food testing
Food Nitrite Testing Instrument
The food nitrite testing instrument is used for the rapid analysis of nitrite content in canned foods such as cured meats, bacon, and pickles, ensuring food safety.
X-ray High Precision Imaging Impurity Detection Machine
The X-ray high precision imaging impurity detection machine is used for detecting impurities and foreign objects in opaque packaging of canned products, ensuring that there are no contaminants inside the cans.
Portable Handheld Canned Food Vacuum Tester
The portable handheld canned food vacuum tester measures the vacuum level of canned foods, ensuring the seal integrity and shelf life of the cans.
Sealing Tester
The sealing tester is used to detect the sealing performance of cans, preventing spoilage due to poor sealing.
Metal Detection Equipment
The metal detection equipment is used to detect metal impurities in canned foods, ensuring food safety.
Moisture Meter
The moisture meter detects the moisture content in canned foods, ensuring the quality and safety of the products.
Refractometer
The refractometer is used to measure the soluble solids in canned fruits and vegetables, as well as beverages, ensuring that the food composition meets standards.
pH Meter
The pH meter is used to measure the acidity of foods, ensuring the taste and shelf life of canned products.
Industry articles
Determination of Bisphenol-Related Compounds in Canned Foods
Lestido-Cardama, Antía, et al. Food Packaging and Shelf Life 28 (2021): 100671.
The inner coatings of cans used for food and beverages are primarily made from synthetic polymers known as epoxy resins, which are mainly based on bisphenol A diglycidyl ether (BADGE). The migration of coating components into food raises food safety concerns.
A multi-residue method based on HPLC-FLD has been developed to identify and quantify six bisphenols, BADGE and its derivatives, and cyclic di-BADGE in sixteen canned food samples. The developed method demonstrated excellent validation data, exhibiting adequate linearity, low detection levels, good repeatability, and acceptable recovery rates. The results obtained were confirmed by LC-MS/MS.
Highly Sensitive Detection of Trace Sn2+ in Canned Foods
Ma, Y., Jin, X., Yang, J., Deng, Z., Bai, H., Li, Y., ... & Chen, W. (2023). Talanta, 257, 124338.
Tin (Sn) plays a crucial role in the human body, and its detection is a mandatory testing item for canned foods. The application of covalent organic frameworks (COF) in fluorescence detection has attracted considerable attention.
In this work, a novel COF (COF-ETTA-DMTA) with a high specific surface area (353.13 m2/g) was designed through solvothermal synthesis using 2,5-dimethoxy-1,4-dialdehyde and tetra(4-aminophenyl)ethylene as precursors. It demonstrated a rapid response time (approximately 50 seconds), low detection limit (228 nM), and good linearity (R2 = 0.9968) for the detection of Sn2+. The recognition mechanism of the COF for Sn2+ was simulated and validated using small molecules with the same functional units through coordination behavior. Moreover, this COF was successfully applied to the identification of Sn2+ in solid canned foods (luncheon meat, fish cans, and red kidney bean cans), yielding satisfactory results.
Determination of Bisphenol A Diglycidyl Ether (BADGE) and Its Derivatives in Canned Foods
Guo, Mingming, et al. Science of the Total Environment 710 (2020): 134975.
Bisphenol A diglycidyl ether (BADGE) is a raw material used in the production of epoxy resins and PVC organic solvents, commonly employed as inner coatings for food cans. BADGE and its derivatives can migrate from the coating into the food during processing and storage, potentially leading to adverse health issues.
In this study, we developed a method based on high-performance liquid chromatography (HPLC) coupled with fluorescence detection (FLD) for the rapid determination of BADGE and its five derivatives in canned foods. The results indicated that the limits of detection (LOD) ranged from 0.01 to 0.20 ng/g, while the limits of quantification (LOQ) varied from 0.03 to 0.66 ng/g, with a relative standard deviation (RSD) of<8.64%. The analysis recovery rates ranged from 70.46% to 103.44%. The excellent validation data demonstrate that this method is suitable for studying the migration of BADGE and its derivatives from can coatings into food.
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