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1.
Shokuhin Eiseigaku Zasshi ; 63(2): 51-61, 2022.
Article in Japanese | MEDLINE | ID: mdl-35650029

ABSTRACT

Migration test of food utensils, containers, and packaging is an important test method for confirming the safety and their compliance to the standards. However, there is little report on inter-laboratory study which was performed to evaluate the entire migration test, including migration operations and quantification. An interlaboratory study was performed participating 22 laboratories using 8 types of model synthetic resin samples containing 10 substances with a wide range of Log Pow values to evaluate the accuracy of the entire migration test. As a result, most of HorRat (r) values met the target criteria (0.3

Subject(s)
Food Contamination , Plastics , Food Contamination/analysis , Food Packaging , Laboratories
2.
Shokuhin Eiseigaku Zasshi ; 59(1): 55-63, 2018.
Article in Japanese | MEDLINE | ID: mdl-29743469

ABSTRACT

An interlaboratory study was performed to evaluate the equivalence between an official method and a modified method of evaporation residue test using three food-simulating solvents (water, 4% acetic acid and 20% ethanol), based on the Japanese Food Sanitation Law for food contact products. Twenty-three laboratories participated, and tested the evaporation residues of nine test solutions as blind duplicates. For evaporation, a water bath was used in the official method, and a hot plate in the modified method. In most laboratories, the test solutions were heated until just prior to evaporation to dryness, and then allowed to dry under residual heat. Statistical analysis revealed that there was no significant difference between the two methods, regardless of the heating equipment used. Accordingly, the modified method provides performance equal to the official method, and is available as an alternative method.


Subject(s)
Cooking and Eating Utensils , Food Contamination/analysis , Food Packaging , Acetic Acid , Ethanol , Food Contamination/prevention & control , Japan , Laboratories , Solutions , Solvents , Volatilization , Water
3.
Shokuhin Eiseigaku Zasshi ; 57(5): 169-178, 2016.
Article in Japanese | MEDLINE | ID: mdl-27784869

ABSTRACT

Using polystyrene, acrylonitrile-styrene resin and acrylonitrile-butadiene-styrene resin pellets as samples, an interlaboratory study was performed to evaluate the volatiles test method, based on the specifications described in the Japanese Food Sanitation Law for food-contacting polystyrene products. The study was conducted with the participation of twenty-one laboratories. Each laboratory quantified the contents of styrene, toluene, ethylbenzene, isopropylbenzene and propylbenzene in three test pellets using GC-FID, GC-MS or headspace-GC-FID. Statistical analysis revealed that the repeatability (RSDr) and reproducibility (RSDr) were 1.0-2.6 and 2.5-5.5% for the GC-FID method. The values of the performance parameters fulfilled the requirements (RSDr: 10%, RSDr: 25%), and the performance is sufficient for specifications testing. The RSDr and RSDr of results obtained using the GC-MS and HS-GC methods were 1.4-7.8 and 4.9-13%(GC-MS), and 2.0-2.6 and 3.3-6.9%(HS-GC-FID), respectively. The quantified levels were similar to those obtained with GC-FID. The study suggests that the GC-MS and HS-GC methods can be employed as alternative methods to the GC-FID method.


Subject(s)
Acrylic Resins/chemistry , Butadienes/chemistry , Cooking and Eating Utensils , Food Packaging , Gas Chromatography-Mass Spectrometry/methods , Polystyrenes/chemistry , Volatile Organic Compounds/analysis , Benzene Derivatives/analysis , Japan , Laboratories , Legislation, Food , Reproducibility of Results , Spectrometry, Fluorescence/methods , Styrene/analysis , Toluene/analysis
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