Composition of the adhesives used in food packaging multilayer materials and migration studies from packaging to food

2011 ◽  
Vol 21 (12) ◽  
pp. 4358 ◽  
Author(s):  
Margarita Aznar ◽  
Paula Vera ◽  
Elena Canellas ◽  
Cristina Nerín ◽  
Peter Mercea ◽  
...  
Keyword(s):  
Food Packaging ◽  
Migration Studies ◽  
And Migration ◽  
Multilayer Materials

scholarly journals Identification and Migration Studies of Photolytic Decomposition Products of UV-Photoinitiators in Food Packaging

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3592 ◽  
Author(s):  
Joseph B. Scarsella ◽  
Nan Zhang ◽  
Thomas G. Hartman
Keyword(s):  
Mass Spectrometry ◽  
Food Packaging ◽  
Chemical Species ◽  
Gas Chromatography Mass Spectrometry ◽  
Migration Studies ◽  
Decomposition Products ◽  
Uv Curable ◽  
Migration Potential ◽  
Photolytic Decomposition ◽  
And Migration

UV-curable inks, coatings, and adhesives are being increasingly used in food packaging systems. When exposed to UV energy, UV-photoinitiators (PI’s) present in the formulations produce free radicals which catalyze polymerization of monomers and pre-polymers into resins. In addition to photopolymerization, other free radical reactions occur in these systems resulting in the formation of chemically varied photolytic decomposition products, many of which are low molecular weight chemical species with high migration potential. This research conducted model experiments in which 24 commonly used PI’s were exposed to UV-energy at the typical upper limit of commercial UV-printing press conditions. UV-irradiated PI’s were analyzed by gas chromatography-mass spectrometry (GC-MS) and electrospray-mass spectrometry (ESI-MS) in order to identify photolytic decomposition products. Subsequently, migration studies of 258 UV-cure food packaging samples were conducted using GC-MS; PI’s and photolytic decomposition products were found in nearly all samples analyzed. One hundred-thirteen photolytic decomposition products were identified. Eighteen intact PI’s and 21 photolytic decomposition products were observed as migrants from the 258 samples analyzed, and these were evaluated for frequency of occurrence and migratory concentration range. The most commonly observed PI’s were 2-hydroxy-2-methylpropiophenone and benzophenone. The most commonly observed photolytic decomposition products were 2,4,6-trimethylbenzaldehyde and 1-phenyl-2-butanone. This compilation of PI photolytic decomposition data and associated migration data will aid industry in identifying and tracing non-intentionally added substances (NIAS) in food packaging materials.

scholarly journals Intersectional Discrimination: Definition, Scope, and Migration Research from the perspective of Intersectionality

2021 ◽  
Vol 9 (22) ◽  
Keyword(s):  
Culturally Diverse ◽  
Historical Background ◽  
Future Research ◽  
Migration Studies ◽  
Social Psychological ◽  
Migration Research ◽  
The Social ◽  
Conducting Research ◽  
And Gender ◽  
And Migration

Along with the widespread rise in immigration and the increase in the number of immigrants, academic interest in migration research has also grown. Although there are many studies conducted in various fields, the number of studies who approached migration from an intersectional perspective is rather small. The number of studies approaching migration and the social psychological processes of migrants from the perspective of intersectionality is even smaller in Turkey. Considering the large number of immigrants in Turkey, it is obviously essential to understand and study intersectionality in these particular contexts. Therefore, this article is written to explicate the concept of intersectionality and review migration studies adopting an intersectional approach. The basis of the concept of intersectionality, historical background that led to the birth of it, its subtypes as well as the importance of race, class and gender in intersectionality are among the issues discussed in this article. Moreover, with respect to migration studies from the perspective of intersectionality, studies conducted in various culturally diverse countries are outlined. The last but not the least, the prominence of conducting research on intersectionality in the Turkish context is also emphasized. In this review, we aim to present the literature to students and academics in the field as well as to provide direction for future research. Keywords: Migration, intersectionality, intersectional discrimination

Critical evaluation of migration studies of silver nanoparticles present in food packaging: a systematic review

2019 ◽  
Vol 60 (18) ◽  
pp. 3083-3102 ◽  
Author(s):  
Luciene de Oliveira Morais ◽  
Elizabeth Valverde Macedo ◽  
José Mauro Granjeiro ◽  
Isabella Fernandes Delgado
Keyword(s):  
Systematic Review ◽  
Silver Nanoparticles ◽  
Food Packaging ◽  
Critical Evaluation ◽  
Migration Studies

scholarly journals Migration, mobility and the dynamics of kinship: New barriers, new assemblages

Ethnography ◽  
2020 ◽  
Vol 21 (3) ◽  
pp. 299-318 ◽  
Author(s):  
Apostolos Andrikopoulos ◽  
Jan Willem Duyvendak
Keyword(s):  
State Politics ◽  
Special Issue ◽  
Migration Studies ◽  
Close Attention ◽  
Dynamic Character ◽  
Migration Research ◽  
Kinship Relations ◽  
And Migration

Although kinship has long since been established as a topic in migration research, migration scholars often lacked an analytical concept of kinship and relied on their own ethnocentric understandings and legal definitions. Reconciling insights from the anthropology of kinship and migration studies, we outline how a new theorization of kinship could be suitable and helpful for the study of migration and mobility. First, we need a conceptualization that accounts for kinship’s flexible and dynamic character in changing settings. Second, it is imperative to pay close attention to the intricate ways kinship interrelates with state politics. Lastly, an analytical notion of kinship should take into account that kinship relations can also have negative implications for the persons concerned. Articles in this Special Issue are attentive to these caveats and approach through the prism of kinship different issues of migration and mobility.

Turnover rates of stable isotopes in avian blood and toenails: Implications for dietary and migration studies

2015 ◽  
Vol 472 ◽  
pp. 89-96 ◽  
Author(s):  
Pedro M. Lourenço ◽  
José P. Granadeiro ◽  
João L. Guilherme ◽  
Teresa Catry
Keyword(s):  
Stable Isotopes ◽  
Turnover Rates ◽  
Migration Studies ◽  
Avian Blood ◽  
And Migration
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