Research Publications (Food Safety)

Monitoring of dairy products should preferably focus on the most relevant food safety hazards in the dairy supply chain. For this purpose, the possible presence of microbiological, chemical, and physical hazards as well as trends in the dairy supply chain that may affect their presence were assessed. A literature review was combined with available data from EFSA, RASFF, and the Dutch monitoring program on chemical hazards as well as expert information.

Abstract

Aims

This investigation is designed to evaluate the antibacterial efficiency of the noodle grass Syringodium isoetifolium, which is commonly found in the Indian coastal waters. Also, this study characterizes the active compound and predicts the mode of action in silico.

Publication date: Available online 5 October 2016


Author(s): V. Ntuli, P.M.K. Njage, E.M. Buys

Publication date: November 2016
, Volume 69

Author(s): Mai Hoang Ngoc Do, Takahiro Yamaguchi, Masahiro Okihashi, Kazuo Harada, Yoshimasa Konishi, Kotaro Uchida, Long Thi Bui, Thinh Duc Nguyen, Ha Bich Phan, Huong Dang Thien Bui, Phuc Do Nguyen, Keiji Kajimura, Yuko Kumeda, Chinh Van Dang, Kazumasa Hirata, Yoshimasa Yamamoto

Antibiotic residues in aquatic products in Vietnam were investigated. A total of 511 fish and shrimp samples were collected from markets in Ho Chi Minh City (HCMC), Thai Binh (TB), and Nha Trang (NT) from July 2013 to October 2015. The samples were extracted with 2% formic acid in acetonitrile and washed with dispersive C18 sorbent. Thirty-two antibiotics were analyzed by LC-MS/MS. Of the 362 samples from HCMC, antibiotic residues were found in 53 samples.

Publication date: November 2016
, Volume 69

Author(s): Meng Xiao Feng, Geng Nan Wang, Kun Yang, Hui Zhi Liu, Jian Ping Wang

Antimicrobial peptides have been accepted as excellent candidates for developing novel antibiotics against drug-resistant bacteria. Recent studies indicate that spider venoms are the source for the identification of novel antimicrobial peptides. In the present study, we isolated and characterized an antibacterial peptide named lycosin-II from the venom of the spider Lycosa singoriensis.

A new environmental bacterial strain exhibited strong antimicrobial characteristics against methicillin-resistant Staphylococcus aureus, vancomycin-resistant strains of Enterococcus faecalis and Lactobacillus plantarum, and other Gram-positive bacteria. The producer strain, designated OSY-I1, was determined to be Brevibacillus laterosporus via morphological, biochemical, and genetic analyses.

Publication date: 1 October 2016
, Volume 208

Author(s): Xuqin Song, Tong Zhou, Qingying Liu, Meiyu Zhang, Chenying Meng, Jiufeng Li, Limin He

A rapid, simple, and strongly selective miniaturized solid phase extraction (SPE) technique, requiring only small amounts of sorbent (24 mg) and elution solvent (600 μL), coupled with ultrahigh-performance liquid chromatography and quadrupole time-of-flight mass spectrometry was developed for detecting tetracycline antibiotics.

Richard Van Vleck Pereira, Svetlana Lima, Julie D. Siler, Carla Foditsch, Lorin D. Warnick, Rodrigo Carvalho Bicalho

Publication date: July 2016
, Volume 65

Author(s): Chunying Li, Yiqun Huang, Keqiang Lai, Barbara A. Rasco, Yuxia Fan

Publication date: January 2016
, Volume 99, Issue 1

Author(s): P.J. Gorden, M.D. Kleinhenz, L.W. Wulf, B. KuKanich, C.J. Lee, C. Wang, J.F. Coetzee

Publication date: January 2016
, Volume 99, Issue 1

Author(s): T. Romero, J. Balado, R.L. Althaus, M.C. Beltrán, M.P. Molina

Na+-translocating NADH:quinone oxidoreductase (Na+-NQR) catalyzes electron transfer from NADH to ubiquinone in the bacterial respiratory chain, coupled with Na+ translocation across the membrane. Na+-NQR maturation involves covalent attachment of FMN residues, catalyzed by flavin transferase encoded by the nqr-associated apbE gene.

Summary

β-ketoacyl-(acyl carrier protein) reductase (FabG) catalyzes the key reductive reaction in the elongation cycle of fatty acid synthesis (FAS), which is a vital metabolic pathway in bacteria and a promising target for new antibiotic development. The activation of the enzyme is usually linked to the formation of a catalytic triad and cofactor binding, and crystal structures of FabG from different organisms have been captured in either active or inactive conformations.

Manure from swine treated with antimicrobials as feed additives is a major source for the expansion of the antibiotic resistance gene (ARG) reservoir in the environment. Vermicomposting via housefly larvae (Musca domestica) can be efficiently used to treat manure and regenerate biofertilizer, but few studies have investigated its effect on ARG attenuation.

Publication date: Available online 9 October 2015


Author(s): V. Manimanna Sankarlal, E.D. Testroet, D.C. Beitz, S. Clark

Mohd Rehan, Ejaz Ahmad, Ishfaq A. Sheikh, Adel M. Abuzenadah, Ghazi A. Damanhouri, Osama S. Bajouh, Samera F. AlBasri, Mansour M. Assiri, Mohd A. Beg

Publication date: 1 April 2016
, Volume 196
Author(s): Mararlene Ulberg Pereira, Bernardete Ferraz Spisso, Silvana do Couto Jacob, Mychelle Alves Monteiro, Rosana Gomes Ferreira, Betânia de Souza Carlos, Armi Wanderley da Nóbrega

Romero, T. et al. Microbial inhibitor tests are widely used to screen antibiotic residues in milk; however, these tests are nonspecific and may be affected by various substances capable of inhibiting the growth of the test microorganism. The objective of this study was to determine the effect of antiparasitic drugs in goat's milk on the microbial inhibitor test response.

Publication date: September 2015
, Volume 98, Issue 9
Author(s): D.L. Grooms, B. Norby, K.E. Grooms, E.N. Jagodzinski, R.J. Erskine, L.W. Halbert, J.F. Coetzee, L. Wulf, J.A. Rice