Research Publications (Food Safety)

3,3′,4,4′,5-Pentachlorobiphenyl (PCB126) is the most toxic congener of dioxin-like polychlorinated biphenyls (DL PCBs), while nanoplastics (NPs) have recently emerged as significant marine pollutants, both posing threats to aquatic organisms and human health. They coexist in the environment, but their comprehensive toxicological effects remain unclear. In this study, zebrafish embryos were simultaneously exposed to PCB126 and 80-nanometer nanoplastyrene (NPS).

The Ya-Er Lake is a seriously polychlorinated dibenzo-p-dioxins/dibenzo-furans (PCDD/Fs) and mercury (Hg)-contaminated lake by pesticide and chlor-alkali plants in China. The oxidation pond method has been conducted to control pollution, moreover, the contaminated sediment was dredged and stacked, becoming a sediment stack yard for vegetable cultivation.

World Health Organization toxic equivalency factors (WHO-TEFs) are recommended for risk management of brominated dioxins in aquatic environments because limited information is available on their toxicity to fish.

This paper proposes a stochastic model to simulate the occurrence and levels of polychlorinated biphenyls (PCBs) in juvenile tuna. This model can calculate the transport of PCBs in the ocean (macroscopic phenomena) and biomagnification in fish (microscopic phenomena).

Several naturally occurring dioxins, including 1,3,7-tribromodibenzo-p-dioxin (1,3,7-TriBDD), synthesized by red algae, have been detected in the marine environment. As 1,3,7-TriBDD is accumulated in mussels and fish, predators, such as marine birds, are exposed to this congener, similar to anthropogenic dioxins (including 2,3,7,8-tetrachlorodibenzo-p-dioxin TCDD).

Exposure to environmental pollutants, including dioxin-like pollutants, can cause numerous health issues. A common exposure route to pollutants is through contaminated foods, and thus the gastrointestinal system and gut microbiota are often exposed to high amounts of pollutants.

Caenorhabditis elegans is a well-established model organism for toxicity testing of chemical substances. We recently demonstrated its potential for bioanalysis of the toxic potency of chemical contaminants in water.

Author(s): Min-Kyung Cho, Jae-Gon Park, Hisato Iwata, Eun-Young Kim

Author(s): Tran Thi Ai My, Nguyen Duy Dat, Kersten Van Langenhove, Michael S. Denison, Hoang Thai Long, Marc Elskens In this study, an AhR-responsive reporter-gene cell-based bioassay CALUX was used to assess the biological potency of dioxins and dioxin-like PCBs (dl-PCBs) in top soil samples collected from a former airbase (A-So) and remote regions from urban and agricultural areas in Thua Thien Hue, Vietnam.

Author(s): Xuejing Shen, Qiuting Yang, Jia Shen, Lili Yang, Minxiang Wang, Yuanping Yang, Guorui Liu

Author(s): Yunyun Deng, Pingan Peng, Lijuan Jia, Haowen Yin, Jianfang Hu, Wanlian Mao

Author(s): Yan Bao, Lei Zhang, Xin Liu, Lei Shi, Jingguang Li, Guimin Meng, Yunfeng Zhao, Yongning Wu

Author(s): Jinzhong Yang, Haibin Yu, Zhen Xie, Yufei Yang, Xiaoyan Zheng, Jingxing Zhang, Qifei Huang, Tao Wen, Jianyuan Wang The thermal processes of cement kilns are sources of polybrominated dibenzofurans and dioxins (PBDD/Fs); however, when co-processing decabromodiphenyl ether (BDE-209) soil in cement kilns, very few reports have investigated the mechanism of PBDD/Fs formation from BDE-209.

Author(s): Lili Yang, Fen Jin, Guorui Liu, Yang Xu, Minghui Zheng, Cui Li, Yuanping Yang

Author(s): Chenyang Xu, Jicheng Hu, Jing Wu, Baokai Wei, Zhenlei Zhu, Liwen Yang, Tingting Zhou, Jun Jin Seventeen soil samples collected in an industrial park located in Ningxia Province, Northwestern China were analyzed for polychlorinated naphthalenes (PCNs), polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), and polychlorinated biphenyls (PCBs). The PCN, PCDD/F, and PCB concentration ranges were 183–3340, 7.00–215, and 45.1–355 pg/g, respectively.

Author(s): Shuang Song, Xin Zhou, Chenqi Guo, Haiyan Zhang, Tao Zeng, Yidong Xie, Jinsong Liu, Chaofei Zhu, Xingrong Sun

Author(s): Congcong Zhang, Xiaoxiu Li, Zhiguang Zhou

Author(s): Nassim Zeinali, Ibukun Oluwoye, Mohammednoor Altarawneh, Bogdan Z. Dlugogorski Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) remain of particular concern owing to their extensive toxicity towards health and accumulation in the environment. Atmospheric oxidation (by ambient oxygen molecules) of this class of persistent environmental pollutants has little to no kinetic feasibility due to very sizable activation energies in the entrance channel.