LWT

Wed, 01/06/2021 - 06:03
LWT
Author(s): Yiying Huang, Steve H. Flint, Shubo Yu, Yu Ding, Jon S. Palmer Bacillus cereus group (B. cereus sensu lato) are ubiquitously distributed in diverse environments. In this study, eight isolates including B. cereus, B. paranthracis and B. toyonensis species, from dairy and potato products, were assessed for biofilm formation, sporulation and genetic information including biofilm-related...
Fri, 01/01/2021 - 06:03
LWT
Author(s): Fernanda Cosme, António Inês, Davide Silva, Luís Filipe-Ribeiro, Luís Abrunhosa, Fernando M. Nunes Ochratoxin A (OTA) is a mycotoxin frequently found in wines, with an allowed maximum limit of 2.0 μg/L. To optimise OTA removal from white and red wines at high levels (10.0 μg/L) using activated carbons (ACs), different commercial deodorising ACs were tested. OTA elimination from white...
Tue, 12/29/2020 - 06:06
LWT
Author(s): Hui Guo, Pengfei Yu, Shubo Yu, Juan Wang, Junhui Zhang, Ying Zhang, Xiyu Liao, Shi Wu, Qinghua Ye, Xiaojuan Yang, Tao Lei, Haiyan Zeng, Rui Pang, Jumei Zhang, Qingping Wu, Yu Ding Bacillus cereus is a well-known foodborne pathogen around the world and can be found in a variety of foods. However, few studies have been conducted to evaluate the risk of B. cereus in quick-frozen food in...
Fri, 12/18/2020 - 06:04
LWT
Author(s): Fan Li, Qinghua Ye, Moutong Chen, Yuting Shang, Jumei Zhang, Yu Ding, Liang Xue, Shi Wu, Juan Wang, Rui Pang, Tao Lei, Haiyan Zeng, Qingping Wu Detection of the foodborne pathogen Listeria monocytogenes serotype 4c, one of the predominant serotypes in aquatic products, is difficult and time-consuming. Our objective was to identify novel target genes for real-time PCR detection of L....
Sun, 12/13/2020 - 06:02
LWT
Author(s): Xinyao Wei, Long Chen, Byron D. Chaves, Monica A. Ponder, Jeyamkondan Subbiah This research investigated the effect of temperature and relative humidity (RH)conditions during ethylene oxide (EtO) fumigation for inactivation of Salmonella and Enterococcus faecium NRRL B-2354on wholeblack peppercorns. Black peppercorn samples were inoculated with a five-strain Salmonella cocktail or E....
Sun, 12/13/2020 - 06:02
LWT
Author(s): Sudarsan Mukhopadhyay, Kimberly Sokorai, Dike O. Ukuku, Tony Jin, Xuetong Fan, Ocean M. Olanya, Juncai Leng, Vijay Juneja The microbial safety of fresh produce continues to be a real concern. Novel nonthermal technologies are required to lessen the risk of pathogen contamination. The objective of this research was to develop and evaluate the effects of direct and in-package pulsed...
Sat, 12/12/2020 - 06:03
LWT
Author(s): Kelly Cristina Massarolo, José Rodrigo Mendoza, Tushar Verma, Larine Kupski, Eliana Badiale-Furlong, Andréia Bianchini The potential reduction of aflatoxins B1, B2, G1 and G2 levels t hrough extrusion as well as their bioaccessibility in corn-based products were investigated. Cornmeal samples were spiked with aflatoxins (50 ng g−1) and extruded in the absence and presence of high-...
Thu, 12/10/2020 - 06:03
LWT
Author(s): Caiping Huang, Bangzhu Peng A high-performance nitrogen-doped chitosan-TiO2 nanocomposite to be used as a photocatalyst for patulin degradation in apple juice was successfully prepared by a simple precipitation method. The structure and properties were characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), X-ray...
Sat, 12/05/2020 - 06:10
LWT
Author(s): Junyi Zhang, Jingyi Wang, Dandan Zhao, Jianxiong Hao The disinfection efficacy of slightly acidic electrolyzed water (SAEW) has been recognized in food industry. However, the application of single SAEW limited its disinfection potential. The efficacy of the two-step disinfection with SAEW for the reduction of L. monocytogenes contamination on different food raw materials was evaluated...
Thu, 12/03/2020 - 06:09
LWT
Author(s): Rodrigo C. Oliveira, Josefina Cortés-Eslava, Sandra Gómez-Arroyo, Magda Carvajal-Moreno Alternative decontamination strategies focusing on the reduction and detoxification of mycotoxins in food and feed products have gained increasing attention in recent years. In the present study, we explored the potential of thyme, clove and rosemary essential oils (EOs) to inactivate aflatoxin B1 (...
Mon, 11/30/2020 - 06:05
LWT
Author(s): Jing Qian, Chen Wang, Hong Zhuang, Mustapha Muhammad Nasiru, Jianhao Zhang, Wenjing Yan Plasma-activated lactic acid (PALA) was assessed as a novel sanitizer to improve the microbiological safety of fresh chicken. Three-hundred mL of 0-0.20 % (v/v) lactic acid (LA) was treated with a plasma jet for 40-100 s using air as the plasma-forming gas, with subsequent application to chicken...
Thu, 11/26/2020 - 06:11
LWT
Author(s): Woo Bin Hyun, Hai Seong Kang, Jae Won Lee, Haftom Baraki Abraha, Kwang-Pyo Kim Previous studies on Bacillus subtilis-producing bacteriocins (or bacteriocin-like inhibitory substance, BLIS) against Clostridium perfringens provided with limited information to show their potentials. In this study, B. subtilis BSC35 was newly-isolated and its BLIS-containing cell-free supernatant exhibited...
Thu, 11/26/2020 - 06:11
LWT
Author(s): Yifang Cao, Donggen Zhou, Xiaowei Zhang, Xinglong Xiao, Yigang Yu, Xiaofeng Li The combined effects of four substances, carvacrol, citral, thymol and caprylic acid, on the growth of Cronobacter sakazakii CICC 21544 were evaluated. Among the six combinations, only the combination of citral and carvacrol demonstrated a synergistic effect. This combination had a stronger growth inhibition...
Thu, 11/26/2020 - 06:11
LWT
Author(s): S. Anjana, Abhilash Sasidharan, B. Varghese, Sarasan Sabu, K.V. Sunooj, K.A.Martin Xavier A cost-effective, portable, ultra violet assisted vertical re-circulatory depuration system (UVDC) was developed and its effect on microbiological, heavy metal and proximate composition of Black clam (Villorita cyprinoides) was investigated. The process of depuration was found to be effective in...
Wed, 11/25/2020 - 06:05
LWT
Author(s): Shihyu Chuang, Shiowshuh Sheen, Christopher H. Sommers, Lee-Yan Sheen As the consumption of poultry continues to increase, actions are needed to strengthen food safety approaches against contamination with the pathogens of concern, e.g., Salmonella enterica and Listeria monocytogenes. This study applied response surface methodology (RSM) using a central composite design to investigate...
Sat, 11/21/2020 - 06:11
LWT
Author(s): Ruttipron Pothimon, Uraiwan Podjanee, Warawut Krusong, Anthony Keith Thompson, Salvatore Massa Fresh-cut jackfruit, purchased from markets in urban areas of Bangkok, were examined for bacterial contamination. Pantoea agglomerans was the predominant contaminant bacterium occurring in 90% of the 30 samples tested; many with high loads. Inhibition of surface contamination of P....
Fri, 11/13/2020 - 06:07
LWT
Author(s): Lele Shao, Yi Liu, Xiaojing Tian, Qianqian Yu, Huicong Wang, Xingmin Li, Ruitong Dai Inactivation and recovery of Staphylococcus aureus in milk, apple juice and broth treated with ohmic heating (OH) were investigated in this study. OH treatment showed a comparable inactivation effect on S. aureus with water bath heating (WB) treatment, while the time consumed by OH was much shorter...
Fri, 11/13/2020 - 06:07
LWT
Author(s): V. Robichaud, L. Bagheri, S. Salmieri, B.R. Aguilar-Uscanga, M. Millette, M. Lacroix The aim of this study was to assess the effect of γ-irradiation on the microbial inactivation of selected foodborne pathogens (Bacillus cereus, Listeria monocytogenes, Staphylococcus aureus, Escherichia O157:H7, and Salmonella Typhimurium) in combination with 2.5% sodium citrate, 0.5% sodium carbonate...
Fri, 11/13/2020 - 06:07
LWT
Author(s): Aida Pérez-Baltar, Alejandro Serrano, Margarita Medina, Raquel Montiel The population of Listeria monocytogenes and the expression of five virulence and stress-related genes in pressurized dry-cured ham were monitored throughout storage at 4 ºC. L. monocytogenes strains S2 (serotype 1/2a) and S7-2 (serotype 4b) exhibited a moderate resistance to high pressure processing (HPP) at 450...
Sat, 11/07/2020 - 06:11
LWT
Author(s): Brianmax A. Takundwa, Prashant Bhagwat, Santhosh Pillai, Oluwatosin A. Ijabadeniyi Ready-to-eat vegetables such as lettuce are prone to bacterial contamination, predominantly from Escherichia coli and Listeria monocytogenes, the leading causes of foodborne illnesses globally. Chlorine is widely used as a decontaminant in the fresh produce industry, however, potential carcinogenic risks...
Sat, 11/07/2020 - 06:11
LWT
Author(s): Jin-Hee Kim, Se-Wook Oh focused on conventional foodborne pathogen detection by selective media are cumbersome and require long time for culture enrichment. Several rapid tests have been developed for the detection of Escherichia coli O157:H7 in the food industry. However, the E. coli O157:H7 method takes very long and requires more than one day to achieve the detection threshold using...
Fri, 11/06/2020 - 06:07
LWT
Author(s): A. Arun Prince Milton, Kasanchi M. Momin, Sandeep Ghatak, Shiny C. Thomas, G. Bhuvana Priya, M. Angappan, Samir Das, R.K. Sanjukta, K. Puro, I. Shakuntala, A. Sen, B.K. Kandpal Staphylococcus aureus is one of the most common and leading causes of food poisoning and also responsible for multifarious diseases in humans. Rapid and on-site detection of S. aureus is of specific importance...
Fri, 11/06/2020 - 06:07
LWT
Author(s): Ana Sainz-García, Ana González-Marcos, Rodolfo Múgica-Vidal, Ignacio Muro-Fraguas, Rocío Escribano-Viana, Lucía González-Arenzana, Isabel López-Alfaro, Fernando Alba-Elías, Elisa Sainz-García Oak wood barrel sanitization is crucial in terms of food safety, since barrels enrich the wine in aromas and taste sensation and provide physico-chemical stability. The most used method is barrel...
Tue, 11/03/2020 - 06:14
LWT
Author(s): Pabasara Weerarathne, Josh Payne, Joyjit Saha, Tony Kountoupis, Ravi Jadeja, Divya Jaroni Escherichia coli O157:H7 biofilms pose challenges to the food industry by facilitating pathogen persistence. Sodium acid sulfate (SAS), a food-acid with antimicrobial properties, is poorly understood for its biofilm-disrupting capabilities. Efficacy of SAS (0.1, 1, and 3%), to disrupt E. coli O157...
Tue, 11/03/2020 - 06:14
LWT
Author(s): Hou-Qi Ning, Ying-Qiu Li, Hong Lin, Jing-Xue Wang ε-poly-lysine (ε-PL) is a safe and excellent natural preservative. This study aimed to investigate the antibacterial actions of ε-PL against Staphylococcus aureus (S. aureus) and its anti-S. aureus activity on the pasteurized milk. Electron microscopy observation showed ε-PL severely disrupted the cell wall and membrane of S. aureus,...
Thu, 10/29/2020 - 06:15
LWT
Author(s): Gozde Seval Sozbilen, Ahmet Yemenicioğlu This study aimed to determine antilisterial potential of lysozyme (LYS)-nisin (NIS) combination at temperatures and pHs optimal for LYS activity. Tests in buffers at pH 4.5 and 6.0 showed that heating at 50 or 60 °C combined with LYS-NIS caused higher Listeria innocua inactivation (- 6.2 to >6.6 log) than heating alone (- 0.05 to 5.5 log), or...
Thu, 10/29/2020 - 06:15
LWT
Author(s): Özgül Aydin Demirarslan, Hamza Alasalvar, Zeliha Yildirim The present study was conducted to investigate the virulent effects of SE-P3, P16, P37, and P47 phages specific to Salmonella Enteritidis, alone or as a cocktail on raw chicken meat and chicken skin. Chicken meat and skin artificially contaminated with 103 and 106 log CFU/g or cm2 Salmonella were treated with SE-phages at a...
Thu, 10/29/2020 - 06:15
LWT
Author(s): Yoon-Su Kim, Jungmin Lee, Sojeong Heo, Jong-Hoon Lee, Do-Won Jeong Bacillus coagulans can be used as a probiotic or starter strain in fermented foods if it meets certain safety and phenotypic requirements. Here, we assessed the presence of toxin genes, the hemolytic activity, and the antibiotic resistance of 31 B. coagulans strains isolated from rice straw. No toxin genes were found in...
Wed, 10/28/2020 - 06:07
LWT
Author(s): Han Yeong Kaw, Xiangzi Jin, Yunan Liu, Long Cai, Xiangai Zhao, Juan Wang, John L. Zhou, Miao He, Donghao Li An effective sequential clean-up method by coupling gas-liquid microextraction (GLME) and magnetic-assisted dispersive solid phase extraction (d-SPE) termed as GLME-MA-d-SPE has been developed for multi-residue pesticide analysis in different fatty foods of animal origin. GLME is...
Wed, 10/28/2020 - 06:07
LWT
Author(s): Mauricio Redondo-Solano, Carol Valenzuela-Martinez, Vijay K. Juneja, Dennis E. Burson, Harshavardhan Thippareddi The effect of potassium lactate and sodium diacetate mixture (Opti.Form PD4®) on Clostridium perfringens spore germination and outgrowth during abusive cooling of reduced sodium ham was evaluated. A ham formulation containing NaNO2 (0 or 100 ppm), NaCl (1 or 2%) and Opti....
Wed, 10/28/2020 - 06:07
LWT
Author(s): Md. Niamul Kabir, Sadiye Aras, Jyothi George, Sabrina Wadood, Shahid Chowdhury, Aliyar Cyrus Fouladkhah Current study investigated decontamination efficacy of elevated hydrostatic pressure against wild-type, 72-hour habituated, and pressure-stressed phenotypes of Listeria monocytogenes, Listeria innocua, and Staphylococcus aureus in milk and orange juice. Pressure intensity levels of...
Wed, 10/28/2020 - 06:07
LWT
Author(s): Felice Panebianco, Fi,lippo Giarratana, Andrea Caridi, Rossana Sidari, Alessandra De Bruno, Alessandro Giuffrida Several studies showed that lactic acid bacteria isolated from traditional cheeses produced in Calabria (Italy) inhibited in vitro the growth of different spoilage and/or pathogenic microorganisms. However, the activity of these autochthonous strains against Listeria...
Wed, 10/28/2020 - 06:07
LWT
Author(s): Jun Wang, Rongwei Han, Xinyu Liao, Tian Ding In recent years, antibiotic resistance has been a potential risk to public health. Cold plasma is an emerging non-thermal technology in food industry. Plasma-activated water (PAW) has been proposed as a novel chlorine-free disinfectant for food products in last decade. In this study, we employed PAW to inactivate methicillin-resistant...
Sat, 10/10/2020 - 06:10
LWT
Author(s): Lanlin Yu, Su Zhang, Yuanyuan Xu, Xiaoyu Mi, Tong Xing, Jiaolong Li, Lin Zhang, Feng Gao, Yun Jiang Shiga toxin-producing Escherichia coli (STEC) strains are classified as important foodborne pathogens and their acid resistance (AR) capability is identified as one of key factors compromising food safety. In this study, we confirmed experimentally that the growth of two STEC strains (...
Wed, 10/07/2020 - 06:07
LWT
Author(s): Zhilin Gan, Xiaoru Feng, Yanan Hou, Aidong Sun, Ruixue Wang Here, we investigated the effects of cold plasma (CP), a nonthermal processing technology, on Escherichia coli and Saccharomyces cerevisiae inactivation and the quality of chokeberry juice (CJ). A CP jet with a dielectric barrier configuration was used to process the CJ, and the inactivation of E. coli and S. cerevisiae was...
Tue, 10/06/2020 - 06:11
LWT
Author(s): Li Li, Bolei Yang, Muhammad Humza, Hairong Geng, Gang Wang, Chenxi Zhang, Sheng Gao, Fuguo Xing, Yang Liu Aspergillus carbonarius is a typical OTA production strain in genus Aspergillus. Inhibiting the growth of A. carbonarius during planting, storage and processing is the most effective way to reduce OTA contamination in grapes. The objective of this study was to screen the...
Sun, 09/27/2020 - 06:08
LWT
Author(s): Oladipupo Odunayo Olatunde, Soottawat Benjakul, Kitiya Vongkamjan This work aimed -at investigating the microbial diversity, shelf-life, and sensory properties of Asian sea bass slices (ASB-S) subjected to high voltage cold plasma (HV-CP) combined with 400 mg/kg liposomal encapsulated ethanolic coconut husk extract (LiE-ECHE). HV-CP was generated from a mixture of argon, carbon dioxide...
Fri, 09/25/2020 - 06:06
LWT
Author(s): Gökhan Kürşad İncili, Müzeyyen Akgöl, Mehmet Emin Aydemir, Selçuk Alan, Muhsin Mutlu, Osman İrfan İlhak, Gülsüm Öksüztepe In recent years, the increase in consumer demands for the products that are processed with natural additives has highlighted the use of natural substances in food processing and safety. For this purpose, the aim of this study is to determine the effect of homemade...
Mon, 09/21/2020 - 06:06
LWT
Author(s): Ali Gücükoğlu, Erdem Saka, Tolga Uyanik, Sibel Kanat, Özgür Çadirci, Rahşan Akpinar Beekeeping industry is developing day by day in the world and accordingly, there is an increase in the variety of beekeeping products. One of these products is pollen which is the main source of proteins necessary for bees to complete their growth and development and also an excellent functional food...
Sat, 09/19/2020 - 06:10
LWT
Author(s): Yu-Hao Zhou, Sriram K. Vidyarthi, Chong-Shan Zhong, Zhi-An Zheng, Yu An, Jun Wang, Qing Wei, Hong-Wei Xiao Wolfberry is very difficult to dry as its surface is covered by thin wax layer. Chemical dipping is frequently used to dissolve it and enhance drying. In current work, cold plasma (CP) was employed and its pretreatment effect (15, 30, 45, 60 s) on drying time, color, rehydration...
Fri, 09/18/2020 - 06:06
LWT
Author(s): Chenghui Zhang, Changzhu Li, Mohamed A. Abdel-Samie, Haiying Cui, Lin Lin Listeria monocytogenes (L. monocytogenes) can adhere to biological or non-biological surfaces, including food processing equipment and storage containers. Subsequently, they can contaminate food by forming a biofilm, thereby causing serious food safety problems. In this project, the natural antibacterial agent...
Sun, 09/13/2020 - 06:06
LWT
Author(s): Haiying Cui, Hong Li, Changzhu Li, Mohamed A. Abdel-Samie, Lin Lin As a natural antibacterial agent, moringa oil (MO, containing palmitic acid, stearic acid and oleic acid as the dominant components) performs promising potential to ensure microbiological safety in food industry. Nevertheless, the antibacterial mechanism of MO is still unclear. In this study, we explored the...
Wed, 09/02/2020 - 06:06
LWT
Author(s): Harshavardhan Thippareddi, S. Balamurugan, Jitendra Patel, Manpreet Singh, Julie Brassard The COVID-19 pandemic has worldwide impact in terms of number of illnesses, deaths and long-term sequelae. While the main route for the spread of the SARS-CoV-2 virus is person to person from respiratory droplets, survival of the virus in the air and its ability to infect subsequently have raised...
Wed, 09/02/2020 - 06:06
LWT
Author(s): Chengliang Li, Guofeng Jin, Lichao He, Chuqiao Xiao In present study, using gamma-ray irradiation at dose of 0 kGy and 3 kGy, the effect of glucose on off-odor performance in porcine muscle protein emulsions was monitored by determining lipid oxidation, protein oxidation events, profile of free amino acids and volatile compounds. Results showed that sarcoplasmic emulsion produced more...
Wed, 09/02/2020 - 06:06
LWT
Author(s): Ting Li, Ling Jin, Kaiwen Feng, Tan Yang, Xianglin Yue, Bin Wu, Shuangyan Ding, Xuehua Liang, Ganhui Huang, Jinsheng Zhang The growing threat of foodborne disease has made it imperative to develop rapid and efficient detection techniques. Here, we developed dendritic superparamagnetic iron oxide nanoparticles (SPIONs) combined with low-field nuclear magnetic resonance (LF-NMR)...
Wed, 09/02/2020 - 06:06
LWT
Author(s): Ilkin Yucel Sengun, Gulden Kilic, Berna Ozturk In this study, the effects of marination liquids (MLs) prepared using koruk juice (25% and 50%) and dried koruk pomace (1% and 2%) with or without additives [salt (1%) and thyme (0.1%)] on meat safety were determined. In the first stage, the minimum inhibition concentration (MIC) values of MLs were observed in the range of 6.50% - >50...
Sat, 08/29/2020 - 06:10
LWT
Author(s): Jiacheng Zhou, Eirini Velliou, Seok Hoon Hong The FDA-approved antimicrobial peptide nisin has been used to prevent contamination of food products from Gram-positive pathogens including Listeria monocytogenes (L. monocytogenes). However, some L. monocytogenes strains are tolerant or resistant to nisin treatment at a dose that would normally be lethal. Therefore, alternative or combined...
Fri, 08/21/2020 - 06:06
LWT
Author(s): Ahmed G. Abdelhamid, Ahmed E. Yousef Some Salmonella enterica serovars adapt effectively to low-water activity (low-aw) environments but this desiccation stress also induces collateral responses that have not been fully explored. Additionally, it is not known how long these responses are retained during refrigerated storage of the dehydrated pathogen. To investigate these issues, two S...
Sun, 08/16/2020 - 06:06
LWT
Author(s): Shruti Chatterjee, Ishan Raval, Krishna Raval, Rima Tapader, Gopal Bhojani, Amit Pal, Sandhya Mishra This study intended to determine whether edible microalgae can play an active role as an anti-virulence agent for enteropathogens. It showed that Chlorella variabilis (ATCC PTA 12198) are able to inhibit the production of the virulence factors in pathogenic Vibrio cholerae strains, the...
Sun, 08/16/2020 - 06:06
LWT
Author(s): Abeni Beshiru, Isoken H. Igbinosa, Etinosa O. Igbinosa The present study was carried out to determine and characterize the virulence and antimicrobial resistance profile of S. aureus from ready-to-eat (RTE) shrimp. A total of 720 RTE shrimp samples from open market in Delta State Nigeria were assessed for the virulence and antimicrobial characteristic profile of S. aureus using...

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