Food Chemistry, 2023, https:// doi: 10.1016/j.foodchem.2023.135728

Abstract

To evaluate the safety of orange treated with preservatives, we analyzed the distribution, migration and changes of the three most common preservatives (prochloraz, imazalil, and thiophanate-methyl) during orange storage and processing. After treatment, preservatives entered orange rapidly within 2 h, and with the greatest levels being in the outer yellow peel, followed by the stem, middle white peel, and finally pulp. The intra-fruit migration ability of the three preservatives correlated inversely with their octanol/water partition coefficients. Residual preservatives and their metabolites in orange pulp were less than 0.84 mg/kg in storage duration. Orange juice and pectin processing could effectively remove the residues, with processing factors (PFs) of 0.159-0.446 and 0.014-0.059. For tangerine peel, however, the process increased the levels of residual preservatives with PFs of 2.964-6.004. Therefore, concern is warranted with regard to the risk of dietary exposure to tangerine peel and essential oil.

Food Chemistry,IF=8.8

https://pubmed.ncbi.nlm.nih.gov/36848835/