Research Publications (Food Safety)

by Dirk Thielen, Karl-Ludwig Schuchmann, Paolo Ramoni-Perazzi, Marco Marquez, Wilmer Rojas, Jose Isrrael Quintero, Marinêz Isaac Marques

ABSTRACT

More than 10 years ago, we published the paper describing the mothur software package in Applied and Environmental Microbiology. Our goal was to create a comprehensive package that allowed users to analyze amplicon sequence data using the most robust methods available. mothur has helped lead the community through the ongoing sequencing revolution and continues to provide this service to the microbial ecology community.

The organoarsenical feed additive 4-hydroxy-3-nitrobenzenearsonic acid (roxarsone [ROX]) is widely used and released into the environment. We previously showed a two-step pathway of ROX transformation by Enterobacter sp. strain CZ-1 involving the reduction of ROX to 3-amino-4-hydroxyphenylarsonic acid (3-AHPAA) and the acetylation of 3-AHPAA to N-acetyl-4-hydroxy-m-arsanilic acid (N-AHPAA) (K. Huang, H. Peng, F. Gao, Q.

Author(s): Esteban Avigliano, Jonatan Schlotthauer, Barbara Maichak de Carvalho, Mirna Sigrist, Alejandra V. Volpedo

Author(s): André Alberto Weber, Camila Ferreira Sales, Francisco de Souza Faria, Rafael Magno Costa Melo, Nilo Bazzoli, Elizete Rizzo

Author(s): Xiaoying Lin, Jiating Zhao, Wei Zhang, Lina He, Liming Wang, Dunhu Chang, Liwei Cui, Yuxi Gao, Bai Li, Chunying Chen, Yu-Feng Li

Author(s): Yu Fang, Ying Xiang, Xing Lu, Xin Dong, Jiexin Zhang, Shan Zhong

Polycyclic aromatic hydrocarbons (PAHs) were detected and quantified in sediment and edible fish (Megalops atlanticus) from Caleta lagoon (Lagoon of Terminos, Mexico) in order to assess their potential health impact on consumers. Sum PAH concentrations in sediment and fish muscle tissues were dominated by high molecular weight PAH compound (46.4%–93.1%) relative to low molecular weight compounds (6.9%–42.9%).

The presence of phosphorus in water is a major cause behind the eutrophication of the aquatic environment. The growing trend focuses on the use of agriculture waste to fabricate biosorbents with higher removal capabilities for phosphate present in wastewater. Herein, a novel adsorbent named multifunctional biochar (MFBC) was applied for the decontamination of both phosphate and cadmium through two-stage adsorption.

by Shih-Chao Lin, Brian D. Carey, Victoria Callahan, Ji-Hyun Lee, Nicole Bracci, Anurag Patnaik, Amy K. Smith, Aarthi Narayanan, Benjamin Lepene, Kylene Kehn-Hall

Amoebiasis is caused by the protozoan Entamoeba histolytica that affects millions of people throughout the world. The standard treatment is metronidazole, however, this drug causes several side effects, and is also mutagenic and carcinogenic. Therefore, the search for therapeutic alternatives is necessary. Quinoxaline 1,4-di-N-oxides (QdNOs) derivatives have been shown to exhibit activity against different protozoan.

A modified QuEChERS protocol with a nitrogen-doped graphitized carbon derived from dicyandiamide sludge as a cleanup sorbent has been developed to determine 20 organochlorine pesticides in tomatoes using gas chromatography coupled to a triple-quadrupole mass analyzer. Compared with traditional QuEChERS adsorbents, N-doped graphitized carbon exhibited higher recoveries toward the target pesticides in tomatoes.

Repeated application of organic fertiliser has unintentionally let to the introduction into surface water and soils of many phytotoxic substances that compromise agricultural production and threaten environmental quality. Recent studies using hydroponic systems have reported that bisphenol A (BPA) affects essential mineral elements contents and root absorptive function, thereby impacting nutrient content in plant.

Bisphenol F (BPF) is one of several Bisphenol A (BPA) substituents that is increasingly used in manufacturing industry leading to detectable human exposure. Whereas a large number of studies have been devoted to decipher BPA effects, much less is known about its substituents.

Cadmium (Cd) is a heavy metal of great public health concern. Recent studies suggested a link between Cd exposure and cognitive decline in humans. The ε4 allele, compared with the common ε3 allele, of the human apolipoprotein E gene (ApoE) is associated with accelerated cognitive decline and increased risks for Alzheimer’s disease (AD).

Polychlorinated biphenyls (PCBs) are highly persistent and ubiquitously distributed environmental pollutants. Based on their chemical structure, PCBs are classified into non-ortho-substituted and ortho-substituted congeners. Non-ortho-substituted PCBs are structurally similar to dioxin and their toxic effects and mode of action are well-established. In contrast, very little is known about the effects of ortho-substituted PCBs, particularly, during early development.

Advanced thermal treatment of electronic waste offers advantages of volume reduction and energy recovery. In this work, the pyrolysis behaviour of nonmetallic fractions of waste printed circuit boards was studied. The fate of a bromine and thermal decomposition pathway of nonmetallic fractions of waste printed circuit boards were further probed.

Author(s): Haihua Wang, Wei Huang, Ying Gong, Chienmin Chen, Tengyun Zhang, Xiaoping Diao

This study investigated the concentration of polycyclic aromatic hydrocarbons (PAHs) using particle and gas-phase air samples collected in the Ovaakca and Cumalikizik region of Bursa, between May and September 2017. The concentration of Σ16PAH measured in the gas phase, for Ovaakca and Cumalikizik, were 5.32 ± 1.98 and 4.91 ± 3.41 ng m−3, respectively; and for the particle phase, 0.81 ± 0.56 and 1.84 ± 1.82 ng m−3, respectively.

Author(s): Shilpa Surendran, Kiruthika Selvaraj, Christopher Turner, Srivalli Addanki, Nanda Kishore Kannuri, Arindam Debbarma, Suneetha Kadiyala, Sanjay Kinra, Helen Walls

Author(s): Zheng Peng, Roland Weber, Yong Ren, Jianwei Wang, Yangzhao Sun, Lifang Wang

Author(s): Junhong Wang, Xianzhao Shao, Junhai Liu, Xiaohui Ji, Jianqi Ma, Guanghui Tian

Author(s): Jiyang Qiao, Jie Tang, Qiang Xue