1
|
Muloi DM, Kurui P, Sharma G, Ochieng L, Nganga F, Gudda F, Muthini JM, Grace D, Dione M, Moodley A, Muneri C. Antibiotic quality and use practices amongst dairy farmers and drug retailers in central Kenyan highlands. Sci Rep 2023; 13:23101. [PMID: 38155204 PMCID: PMC10754936 DOI: 10.1038/s41598-023-50325-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/18/2023] [Indexed: 12/30/2023] Open
Abstract
Understanding antibiotic use in dairy systems is critical to guide antimicrobial stewardship programs. We investigated antibiotic use practices in small-holder dairy farms, antibiotic quality, and antimicrobial resistance (AMR) awareness among veterinary drug retailers in a mixed farming community in the central Kenyan highlands. Data were collected from 248 dairy farms and 72 veterinary drug stores between February 2020 and October 2021. A scale was developed to measure knowledge about AMR and antibiotic use using item response theory, and regression models were used to evaluate factors associated with antibiotic use and AMR knowledge. The active pharmaceutical ingredient (API) content of 27 antibiotic samples was determined using high-performance liquid chromatography (HPLC). The presence and levels of 11 antibiotic residues in 108 milk samples collected from the study farms were also investigated using liquid chromatography tandem mass spectrometry (LC-MS/MS). Almost all farms (98.8%, n = 244) reported using antibiotics at least once in the last year, mostly for therapeutic reasons (35.5%). The most used antibiotics were tetracycline (30.6%), penicillin (16.7%), and sulfonamide (9.4%), either individually or in combination, and predominantly in the injectable form. Larger farm size (OR = 1.02, p < 0.001) and history of vaccination use (OR = 1.17, p < 0.001) were significantly associated with a higher frequency of antibiotic use. Drug retailers who advised on animal treatments had a significantly higher mean knowledge scores than those who only sold drugs. We found that 44.4% (12/27) of the tested antibiotics did not meet the United States Pharmacopeial test specifications (percentage of label claim). We detected nine antibiotics in milk, including oxytetracycline, sulfamethoxazole, and trimethoprim. However, only three samples exceeded the maximum residue limits set by the Codex Alimentarius Commission. Our findings indicate that antibiotics of poor quality are accessible and used in small-holder dairy systems, which can be found in milk. These results will aid future investigations on how to promote sustainable antibiotic use practices in dairy systems.
Collapse
Affiliation(s)
- Dishon M Muloi
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya.
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Neston, UK.
| | - Peter Kurui
- Department of Biochemistry, Microbiology and Biotechnology, Kenyatta University, Nairobi, Kenya
| | - Garima Sharma
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
| | - Linnet Ochieng
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
| | - Fredrick Nganga
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
| | - Fredrick Gudda
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
| | - John Maingi Muthini
- Department of Biochemistry, Microbiology and Biotechnology, Kenyatta University, Nairobi, Kenya
| | - Delia Grace
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
- Natural Resources Institute, University of Greenwich, Kent, UK
| | - Michel Dione
- Animal and Human Health Department, International Livestock Research Institute, Dakar, Senegal
| | - Arshnee Moodley
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya.
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg C, Denmark.
| | - Caroline Muneri
- Department of Veterinary Surgery, Theriogenology and Medicine, Egerton University, Njoro, Kenya
| |
Collapse
|
2
|
Widiastuti R, Martindah E, Anastasia Y. Tetracycline residues in fresh dairy milk from three districts in Indonesia: Occurrence and dietary exposure assessment. Vet World 2023; 16:2230-2235. [PMID: 38152253 PMCID: PMC10750746 DOI: 10.14202/vetworld.2023.2230-2235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 10/05/2023] [Indexed: 12/29/2023] Open
Abstract
Background and Aim Milk can introduce antibiotics into the human diet which poses a public health risk. Therefore, a study to determine the tetracycline residue in dairy milk and its health risk assessment is needed. A cross-sectional study was performed to detect tetracycline residues in fresh dairy milk samples collected from the districts of Malang, Boyolali, and Padang Panjang, Indonesia, and to evaluate dietary exposure to tetracycline residues through milk consumption in 10-12-year-old children and adults. Materials and Methods A total of 203 fresh dairy milk samples were collected from local and smallholder dairy cows in Malang, Boyolali, and Padang Panjang in April and August 2018. High-performance liquid chromatography equipped with a photodiode array at 355 and 368 nm was used to detect tetracycline residues. Data were evaluated for dietary exposure assessment. Results The results showed that the most common residue found was chlortetracycline (8.37%), followed by tetracycline (7.88%) and oxytetracycline (5.91%) in the concentration range of 14.8-498.4, 11.7-49.4, and 11.6-85.6 ng/g, respectively. Seven (3.45%) samples exceeded the maximum residue limit (MRL) for chlortetracycline. However, neither oxytetracycline nor tetracycline residues exceeded the MRL. The mean concentration of the tetracycline residues was 21.76-137.05 ng/g, resulting in an estimated daily intake of 16.46-172.83 ng/kg body weight/day. Conclusion Tetracycline residues were found in almost all milk sampling locations. The highest prevalence and residue concentration were obtained from chlortetracycline. Estimated daily intake of tetracycline through milk by 10-12-year-old children and adult consumers was low and the risk to consumers was negligible.
Collapse
Affiliation(s)
- Raphaella Widiastuti
- Research Center for Veterinary Science, The National Research and Innovation Agency, Cibinong Science Center, Jl. Raya Jakarta-Bogor KM. 46, Cibinong, Kab. Bogor 16911, Indonesia
- Indonesian Research Center for Veterinary Science, Ministry of Agriculture, Jl. RE Martadinata 30, Bogor 16114, Indonesia
| | - Eny Martindah
- Research Center for Veterinary Science, The National Research and Innovation Agency, Cibinong Science Center, Jl. Raya Jakarta-Bogor KM. 46, Cibinong, Kab. Bogor 16911, Indonesia
- Indonesian Research Center for Veterinary Science, Ministry of Agriculture, Jl. RE Martadinata 30, Bogor 16114, Indonesia
| | - Yessy Anastasia
- Research Center for Veterinary Science, The National Research and Innovation Agency, Cibinong Science Center, Jl. Raya Jakarta-Bogor KM. 46, Cibinong, Kab. Bogor 16911, Indonesia
- Indonesian Research Center for Veterinary Science, Ministry of Agriculture, Jl. RE Martadinata 30, Bogor 16114, Indonesia
| |
Collapse
|
3
|
Abstract
Antibiotics have long been used for the prevention and treatment of common diseases and for prophylactic purposes in dairy animals. However, in recent decades it has become a matter of concern due to the widespread belief that there has been an abuse or misuse of these drugs in animals and that this misuse has led to the presence of residues in derived foods, such as milk and dairy products. Therefore, this review aims to compile the scientific literature published to date on the presence of antibiotic residues in these products worldwide. The focus is on the reasons that lead to their presence in food, on the potential problems caused by residues in the characteristics of dairy products and in their manufacturing process, on the development and spread of antibiotic-resistant bacteria, and on the effects that both residues and resistant bacteria can cause on human and environmental health.
Collapse
|
4
|
Sheikholeslami MN, Hamidipanah Y, Salehnia F, Arshian S, Hosseini M, Ganjali MR. Multiplex Detection of Antibiotic Residues in Milk: Application of MCR-ALS on Excitation-Emission Matrix Fluorescence (EEMF) Data Sets. Anal Chem 2022; 94:6206-6215. [PMID: 35427127 DOI: 10.1021/acs.analchem.1c05592] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The presence of antibiotics and their metabolites in milk and dairy products is a serious concern because of their harmful effects on human health. In the current study, a novel synergistic bimetallic nanocluster with gold and silver as an emission fluorescence probe was investigated for the simultaneous determination of tetracycline (TC), ampicillin (AMP), and sulfacetamide (SAC) antibiotics in the milk samples using excitation-emission matrix fluorescence (EEMF) spectroscopy. The multivariate curve resolution-alternating least squares (MCR-ALS) method was implemented to analyze augmented EEMF data sets to quantify the multicomponent systems in the presence of interferences with considerable spectral overlap. A pseudo-univariate calibration curve of the resolved emission spectra intensity against the concentration of the mentioned antibiotics was linear in the range of 5-5000 ng mL-1 for AMP and 50-5000 ng mL-1 for TC and SAC. The calculated values of the limit of detection ranged between 1.4 and 14.6 ng mL-1 with a relative standard deviation (RSD) of less than 4.9%. The obtained results show that the EEMF/MCR-ALS methodology using an emission fluorescence probe is a powerful tool for the simultaneous quantification of TC, AMP, and SAC in complex matrices with highly overlapped spectra.
Collapse
Affiliation(s)
- Mahsa N Sheikholeslami
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran 1439817435, Iran
| | - Yalda Hamidipanah
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran 1439817435, Iran
| | - Foad Salehnia
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran 1439817435, Iran
| | - Shayesteh Arshian
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran 1439817435, Iran
| | - Morteza Hosseini
- Nanobiosensors Lab, Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran 1439817435, Iran
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran 1439817435, Iran
| |
Collapse
|
5
|
Prevalence and Characterization of PVL-Positive Staphylococcus aureus Isolated from Raw Cow’s Milk. Toxins (Basel) 2022; 14:toxins14020097. [PMID: 35202125 PMCID: PMC8876356 DOI: 10.3390/toxins14020097] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/18/2022] [Accepted: 01/21/2022] [Indexed: 02/07/2023] Open
Abstract
The present study aimed to investigate the prevalence, antibiotic susceptibility profiles, and some toxin genes of Panton-Valentine leukocidin (PVL)-positive Staphylococcus aureus (S. aureus) in unpasteurized raw cow’s milk collected from retail outlets located at Mansoura, Dakahliya governorate, Egypt. In that context, a total of 700 raw cow’s milk samples were investigated for the presence of S. aureus, which was identified in 41.1% (288/700) of the samples. Among the S. aureus isolates, 113 PVL-positive S. aureus were identified and subjected for further analysis. The PVL-positive S. aureus were investigated for the existence of toxin-related genes, including hemolysin (hla), toxic shock syndrome toxin-1 (tst), and enterotoxins (sea, seb, sec, see, seg, sei, and selj). Genotypic resistance of PVL-positive strains was performed for the detection of blaZ and mecA genes. Among the PVL-positive S. aureus, sea, seb, and sec were detected in 44.2, 6.2%, and 0.9%, respectively, while the hla and tst genes were identified in 54.9% and 0.9%, respectively. The blaZ and mecA genes were successfully identified in 84.9 (96/113) and 32.7% (37/113) of the total evaluated S. aureus isolates, respectively. PVL-positive S. aureus displayed a high level of resistance to penicillin, ampicillin, and trimethoprim-sulfamethoxazole. Multidrug resistance (resistant to ≥3 antimicrobial classes) was displayed by all methicillin-resistant S. aureus (MRSA) and 38.2% of methicillin-sensitive S. aureus (MSSA) isolates. The obtained findings are raising the alarm of virulent PVL-positive MRSA clones in retail milk in Egypt, suggesting the requirement for limiting the use of β-lactam drugs in food-producing animals and the importance of implementing strong hygiene procedures in dairy farms and processing plants.
Collapse
|
6
|
Meklati FR, Panara A, Hadef A, Meribai A, Ben-Mahdi MH, Dasenaki ME, Thomaidis NS. Comparative Assessment of Antibiotic Residues Using Liquid Chromatography Coupled with Tandem Mass Spectrometry (LC-MS/MS) and a Rapid Screening Test in Raw Milk Collected from the North-Central Algerian Dairies. TOXICS 2022; 10:toxics10010019. [PMID: 35051061 PMCID: PMC8781432 DOI: 10.3390/toxics10010019] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/29/2021] [Accepted: 12/31/2021] [Indexed: 11/16/2022]
Abstract
Antibiotic residues in milk are a major health threat for the consumer and a hazard to the dairy industry, causing significant economic losses. This study aims to assess the presence of antibiotic residues in raw milk comparatively by a rapid screening test (BetaStar® Combo) and Liquid Chromatography coupled with Tandem Mass Spectrometry (LC-MS/MS). A total of 445 samples were collected from 3 dairy companies of north-central Algeria (Algiers, Blida, Boumerdes), and they were rapidly screened for β-lactams and tetracyclines; 52 samples, comprising 34 positive tanker-truck milk and 18 negative bulk-tank milk were tested by LC-MS/MS, which revealed 90.4% were contaminated (n = 47) and 55.3% exceeded the Maximum Residue Limit (MRL). The β-lactams as parent compounds and their metabolites were the most frequently detected with maximum value for cloxacillin (1231 µg/kg) and penicillin G (2062 µg/kg). Under field condition, the false-positive results, particularly for tetracyclines, seems to be related to milk samples displaying extreme acidity values (≥19°D) or fat-level fluctuations (2.7 g/100 mL and 5.6–6.2 g/100 mL). Despite a relatively low prevalence (7.64%) of residues using the rapid test, the detection by LC-MS/MS of flumequine (52 µg/kg), cefaclor (maximum 220 µg/kg) and metabolites of β-lactams at high levels should lead to reflections on the control of their human and environmental toxicological effects.
Collapse
Affiliation(s)
- Fawzi Rostane Meklati
- Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques CRAPC, BP 384 Bou-Ismail, Tipaza 42004, Algeria;
- Laboratoire de Recherche «Santé et Productions Animales», Ecole Nationale Supérieure Vétérinaire ENSV, Rabie Bouchama, Oued-Smar, Algiers 16000, Algeria;
| | - Anthi Panara
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece;
| | - Ahmed Hadef
- Department of Veterinary Sciences, Faculty of Nature and Life Sciences, Chadli Bendjedid University of El Taref, PB 73, El-Taref 36000, Algeria;
- Laboratory of Development and Control of Hospital Pharmaceutical Preparations, Faculty of Medicine, Badji Mokhtar University of Annaba, Annaba 23000, Algeria
| | - Amel Meribai
- Laboratoire de Recherche en Technologie Alimentaire et Nutrition Humaine, Ecole Nationale Supérieure Agronomique, Algiers 16004, Algeria;
| | - Meriem H. Ben-Mahdi
- Laboratoire de Recherche «Santé et Productions Animales», Ecole Nationale Supérieure Vétérinaire ENSV, Rabie Bouchama, Oued-Smar, Algiers 16000, Algeria;
| | - Marilena E. Dasenaki
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece
- Correspondence: (M.E.D.); (N.S.T.)
| | - Nikolaos S. Thomaidis
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece;
- Correspondence: (M.E.D.); (N.S.T.)
| |
Collapse
|
7
|
Parmar JK, Chaubey KK, Gupta V, Bharath MN. Assessment of various veterinary drug residues in animal originated food products. Vet World 2021; 14:1650-1664. [PMID: 34316216 PMCID: PMC8304421 DOI: 10.14202/vetworld.2021.1650-1664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 05/02/2021] [Indexed: 11/16/2022] Open
Abstract
The veterinary drugs are broad-spectrum antibacterial antibiotics; it uses to cure the animal disease. Many countries have banned veterinary drug residues like nitrofurans metabolites, chloramphenicol. However, the people were administrated veterinary drugs to animals as illegal to increase the milk production in animals for economic benefit. The results of illegally use of veterinary drugs remain as a residue in animal product like milk and it is very harmful to whom consume it cause cancer and allergic for human being which has entered the concern among milk consumers. To control illegal use of veterinary drugs, the government of India has restricted its use in animals. For the identification and confirmation of veterinary drug residues in animal products, analytical techniques such as liquid chromatography and mass spectrometry are available. These are very sophisticated equipments which are available nowadays and their methodologies for the analytical method validation are described by European commission 2002/657/EC. The use of veterinary drugs is a big challenge to effectively identify and authorization of their use. There are so many analytical techniques are using very effectively and taking very less time to protect the consumers from their adverse effects. These techniques take very less time to identify more groups of compounds such as tetracycline, sulfonamides, anthelmintic, and macrolides in single multi-residue method. These methods having validation parameters include system precision, calibration curve, accuracy, limit of detection, and quantification. Therefore, improvement in the existing technologies and accessibility of new screening methodologies will give opportunities for automation that helps in obtaining the results in very less time and improved sensitivity and specificity which contribute to better safety assurance, standard, and quality of various food products of animal origin.
Collapse
Affiliation(s)
- Jagdish Kumar Parmar
- Department of Biotechnology, GLA University, Chaumuhan, Mathura, Uttar Pradesh, India.,TUV India Pvt. Ltd., Sus Rd, Mulshi, Pune, Maharashtra, India.,EUREKA Analytical Services Pvt. Ltd. 31 Milestone, Main GT Road, Kundli, Sonepat, Haryana, India
| | - Kundan Kumar Chaubey
- Department of Biotechnology, GLA University, Chaumuhan, Mathura, Uttar Pradesh, India
| | - Vikas Gupta
- TUV India Pvt. Ltd., Sus Rd, Mulshi, Pune, Maharashtra, India
| | - Manthena Nava Bharath
- Department of Biotechnology, GLA University, Chaumuhan, Mathura, Uttar Pradesh, India
| |
Collapse
|
8
|
Grace D, Wu F, Havelaar AH. MILK Symposium review: Foodborne diseases from milk and milk products in developing countries-Review of causes and health and economic implications. J Dairy Sci 2021; 103:9715-9729. [PMID: 33076183 DOI: 10.3168/jds.2020-18323] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/15/2020] [Indexed: 12/13/2022]
Abstract
Dairy production is rapidly increasing in developing countries and making significant contributions to health, nutrition, environments, and livelihoods, with the potential for still greater contributions. However, dairy products can also contribute to human disease in many ways, with dairyborne disease likely being the most important. Health risks may be from biological, chemical, physical, or allergenic hazards present in milk and other dairy products. Lacking rigorous evidence on the full burden of foodborne and dairyborne disease in developing countries, we compiled information from different sources to improve our estimates. The most credible evidence on dairyborne disease comes from the World Health Organization initiative on the Global Burden of Foodborne Disease. This suggests that dairy products may has been responsible for 20 disability-adjusted life years per 100,000 people in 2010. This corresponds to around 4% of the global foodborne disease burden and 12% of the animal source food disease burden. Most of this burden falls on low- and middle-income countries (LMIC). However, the estimate is conservative. Weaker evidence from historical burden in high-income countries, outbreak reports from LMIC and high-income countries, and quantitative microbial risk assessment suggest that the real burden may be higher. The economic burden in terms of lost human capital is at least US$4 billion/yr in LMIC. Among the most important hazards are Mycobacterium bovis, Campylobacter spp., and non-typhoidal Salmonella enterica. The known burden of chemical hazards is lower but also more uncertain. Important chemical hazards are mycotoxins, dioxins, and heavy metals. Some interventions have been shown to have unintended and unwanted consequences, so formative research and rigorous evaluation should accompany interventions. For example, there are many documented cases in which women's control over livestock is diminished with increasing commercialization. Dairy co-operatives have had mixed success, often incurring governance and institutional challenges. More recently, there has been interest in working with the informal sector. New technologies offer new opportunities for sustainable dairy development.
Collapse
Affiliation(s)
- D Grace
- Animal and Human Health Program, International Livestock Research Institute, Nairobi, Kenya 00100; Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB United Kingdom
| | - F Wu
- Department of Food Science and Human Nutrition, Department of Agricultural, Food, and Resource Economics, Michigan State University, East Lansing 48824
| | - A H Havelaar
- Animal Sciences Department, Emerging Pathogens Institute, Institute for Sustainable Food Systems, University of Florida, Gainesville 32605.
| |
Collapse
|
9
|
Mokh S, El Hawari K, Rahim HA, Al Iskandarani M, Jaber F. Antimicrobial residues survey by LC-MS in food-producing animals in Lebanon. FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE 2020; 13:121-129. [PMID: 32200691 DOI: 10.1080/19393210.2020.1739148] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The treatment of animals with antimicrobial products may lead to the contamination of edible tissues by their residues, which may represent a risk to human health. Therefore, this study aimed to determine the level of antimicrobial residues in food-producing animals (chicken, beef, and milk) in Lebanon. A total of 310 samples were collected and analysed using an LC-MS/MS for the determination of 48 compounds belonging to different families in order to map their compliance according to the European Commission decision 2002/657/EC. Results show that 60% of the analysed samples were not contaminated by any residue, while 12% presented a concentration higher than the MRLs for tetracyclines, sulphonamides, quinolones, and macrolides. Results revealed that chicken were the most contaminated by antimicrobial residues, when compared to beef and milk. The obtained results demonstrate the uncontrolled use of antimicrobials in some Lebanese farms and claim for better management of livestock.
Collapse
Affiliation(s)
- Samia Mokh
- CNRSL, Lebanese Atomic Energy Commission (LAEC), Laboratory for Analysis of Organic Compound (LAOC) , Beirut, Lebanon
| | - Khaled El Hawari
- CNRSL, Lebanese Atomic Energy Commission (LAEC), Laboratory for Analysis of Organic Compound (LAOC) , Beirut, Lebanon
| | | | - Mohamad Al Iskandarani
- CNRSL, Lebanese Atomic Energy Commission (LAEC), Laboratory for Analysis of Organic Compound (LAOC) , Beirut, Lebanon.,Faculty of Public Health I, Lebanese University , Beirut, Lebanon
| | - Farouk Jaber
- CNRSL, Lebanese Atomic Energy Commission (LAEC), Laboratory for Analysis of Organic Compound (LAOC) , Beirut, Lebanon.,Faculty of Sciences I, Lebanese University , Beirut, Lebanon
| |
Collapse
|
10
|
Hong X, Zhao Y, Zhuang R, Liu J, Guo G, Chen J, Yao Y. Bioremediation of tetracycline antibiotics-contaminated soil by bioaugmentation. RSC Adv 2020; 10:33086-33102. [PMID: 35694106 PMCID: PMC9122622 DOI: 10.1039/d0ra04705h] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 08/16/2020] [Indexed: 12/03/2022] Open
Abstract
Bioaugmentation using specific microbial strains or consortia was deemed to be a useful bioremediation technology for increasing bioremediation efficiency. The present study confirmed the effectiveness and feasibility of bioaugmentation capability of the bacterium BC immobilized on sugarcane bagasse (SCB) for degradation of tetracycline antibiotics (TCAs) in soil. It was found that an inoculation dose of 15% (v/w), 28–43 °C, slightly acidic pH (4.5–6.5), and the addition of oxytetracycline (OTC, from 80 mg kg−1 to 160 mg kg−1) favored the bioaugmentation capability of the bacterium BC, indicating its strong tolerance to high temperature, pH, and high substrate concentrations. Moreover, SCB-immobilized bacterium BC system exhibited strong tolerance to heavy metal ions, such as Pb2+ and Cd2+, and could fit into the simulated soil environment very well. In addition, the bioaugmentation and metabolism of the co-culture with various microbes was a complicated process, and was closely related to various species of bacteria. Finally, in the dual-substrate co-biodegradation system, the presence of TC at low concentrations contributed to substantial biomass growth but simultaneously led to a decline in OTC biodegradation efficiency by the SCB-immobilized bacterium BC. As the total antibiotic concentration was increased, the OTC degradation efficiency decreased gradually, while the TC degradation efficiency still exhibited a slow rise tendency. Moreover, the TC was preferentially consumed and degraded by continuous introduction of OTC into the system during the bioremediation treatment. Therefore, we propose that the SCB-immobilized bacterium BC exhibits great potential in the bioremediation of TCAs-contaminated environments. Bioaugmentation using specific microbial strains or consortia was deemed to be a useful bioremediation technology for increasing bioremediation efficiency.![]()
Collapse
Affiliation(s)
- Xiaxiao Hong
- College of Materials and Energy
- South China Agricultural University
- Guangzhou
- PR China
| | - Yuechun Zhao
- College of Materials and Energy
- South China Agricultural University
- Guangzhou
- PR China
| | - Rudong Zhuang
- College of Materials and Energy
- South China Agricultural University
- Guangzhou
- PR China
| | - Jiaying Liu
- College of Materials and Energy
- South China Agricultural University
- Guangzhou
- PR China
| | - Guantian Guo
- College of Materials and Energy
- South China Agricultural University
- Guangzhou
- PR China
| | - Jinman Chen
- College of Materials and Energy
- South China Agricultural University
- Guangzhou
- PR China
| | - Yingming Yao
- College of Materials and Energy
- South China Agricultural University
- Guangzhou
- PR China
| |
Collapse
|
11
|
Yao Y, Mi N, Zhu Y, Yin L, Zhang Y, Li S. Efficient removal of sulfamerazine (SMR) by ozonation in acetic acid solution after enrichment SMR from water using granular activated carbon. RSC Adv 2019; 9:9145-9152. [PMID: 35517672 PMCID: PMC9062022 DOI: 10.1039/c8ra10429h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 03/13/2019] [Indexed: 11/29/2022] Open
Abstract
Sulfamerazine (SMR) as a persistent organic pollutant in waste streams is of growing environmental concern. This study explores the extraction SMR from water into an acetic acid (AA) solution using granular activated carbon (GAC), and removal of SMR by ozonation in AA solution. Systematic experiments have shown that GAC can be used as an adsorbent to transfer sulfamerazine from water to AA solution. SMR removal efficiency is 99.5% in 10% AA aqueous solution, which is better than in water. The removal rate of SMR in the AA solution decreased as the initial molar ratio of SMR and O3 increased. The removal rate of SMR decreased with Fe3+ present in the reactive system. The removal of SMR is dominated by indirect ozonation in water, while the SMR removal is an effect of both direct and indirect ozonation in AA solution. It is a very efficient process for the degradation of SMR in micro polluted water when using combined GAC adsorption–desorption in AA solution and ozonation of the resulting solution. Sulfamerazine (SMR) as a persistent organic pollutant in waste streams is of growing environmental concern.![]()
Collapse
Affiliation(s)
- Youru Yao
- School of Environment
- Nanjing Normal University
- Nanjing 210023
- China
- School of Geography and Tourism
| | - Na Mi
- School of Environment
- Nanjing Normal University
- Nanjing 210023
- China
| | - Yongqing Zhu
- School of Environment
- Nanjing Normal University
- Nanjing 210023
- China
| | - Li Yin
- School of Environment
- Nanjing Normal University
- Nanjing 210023
- China
| | - Yong Zhang
- Department of Geological Sciences
- University of Alabama
- Tuscaloosa
- USA
| | - Shiyin Li
- School of Environment
- Nanjing Normal University
- Nanjing 210023
- China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application
| |
Collapse
|
12
|
Kosgey A, Shitandi A, Marion JW. Antibiotic Residues in Milk from Three Popular Kenyan Milk Vending Machines. Am J Trop Med Hyg 2018; 98:1520-1522. [PMID: 29557339 PMCID: PMC5953359 DOI: 10.4269/ajtmh.17-0409] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 02/06/2018] [Indexed: 11/07/2022] Open
Abstract
Milk vending machines (MVMs) are growing in popularity in Kenya and worldwide. Milk vending machines dispense varying quantities of locally sourced, pasteurized milk. The Kenya Dairy Board has a regulatory framework, but surveillance is weak because of several factors. Milk vending machines' milk is not routinely screened for antibiotics, thereby increasing potential for antibiotic misuse. To investigate, a total of 80 milk samples from four commercial providers (N = 25), street vendors (N = 21), and three MVMs (N = 34) were collected and screened in Eldoret, Kenya. Antibiotic residue surveillance occurred during December 2016 and January 2017 using Idexx SNAP® tests for tetracyclines, sulfamethazine, beta-lactams, and gentamicin. Overall, 24% of MVM samples and 24% of street vendor samples were presumably positive for at least one antibiotic. No commercial samples were positive. Research into cost-effective screening methods and increased monitoring by food safety agencies are needed to uphold hazard analysis and critical control point for improving antibiotic stewardship throughout the Kenyan private dairy industry.
Collapse
Affiliation(s)
- Amos Kosgey
- Master of Public Health Program, Department of Environmental Health Science, Eastern Kentucky University, Richmond, Kentucky
| | | | - Jason W. Marion
- Master of Public Health Program, Department of Environmental Health Science, Eastern Kentucky University, Richmond, Kentucky
| |
Collapse
|
13
|
Gwandu SH, Nonga HE, Mdegela RH, Katakweba AS, Suleiman TS, Ryoba R. Assessment of Raw Cow Milk Quality in Smallholder Dairy Farms in Pemba Island Zanzibar, Tanzania. Vet Med Int 2018; 2018:1031726. [PMID: 29721257 PMCID: PMC5867610 DOI: 10.1155/2018/1031726] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 01/24/2018] [Indexed: 11/17/2022] Open
Abstract
Milk quality depends on the physicochemical characteristics, hygienic standards, and nutritional quality; however, animal husbandry practices, unhygienic harvesting and processing, may affect its quality. A cross-sectional study was conducted between August 2010 and July 2011 to assess the hygiene of cow milk production environment, raw cow milk physicochemical characteristics, and microbial quality and estimate the prevalence of antimicrobial residues using standard methods in Pemba Island. A total of 98 raw cow milk samples from selected smallholder dairy farms were analyzed, and the judgement on the quality used the East African Standards. Generally, the milk production chain was done under the unhygienic condition, and dirty plastic containers were used for collection and storage of milk under room temperature. Some milk samples had abnormal colour (2.1%), abnormal smell (7.1%), and pH below normal (35.7%), clotted on alcohol test (9.2%), and had the specific gravity below normal (13.3%). All the milk samples had mineral contents within the recommended range. Milk samples with butterfat below normal were 29.6%, while 14.3% had total solids below recommended values. The mean total viable count (TVC) of milk container surfaces was 9.7 ± 10.5 log CFU/100 cm2, while total coliform count (TCC) was 7.8 ± 8.5 log CFU/100 cm2. Up to 55.1% of milk had TVC beyond the recommended levels. The milk mean TVC was 11.02 ± 11.6 log CFU/ml and TCC was 6.7 ± 7.3 log CFU/ml. Up to 26.5% of milk samples had the TCC beyond levels. Results on physicochemical characteristics and nutritional analysis show that the raw cow milk in Pemba Island is of inferior quality. Microbiological results of this study imply heavy contaminations of milk. Antimicrobial residues were detected in 83% of the samples and most of them were from Wete District. Unhygienic milk production chain accelerates microbial contaminations, and antimicrobial residues in milk are a big problem that needs urgent attention from the responsible authority.
Collapse
Affiliation(s)
- S. H. Gwandu
- Ministry of Education and Vocational Training, P.O. Box 90543, Dar es Salaam, Tanzania
| | - H. E. Nonga
- Department of Veterinary Medicine and Public Health, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, P.O. Box 3021, Chuo Kikuu, Morogoro, Tanzania
| | - R. H. Mdegela
- Department of Veterinary Medicine and Public Health, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, P.O. Box 3021, Chuo Kikuu, Morogoro, Tanzania
| | - A. S. Katakweba
- Pest Management Centre, Sokoine University of Agriculture, P.O. Box 3010, Chuo Kikuu, Morogoro, Tanzania
| | - T. S. Suleiman
- Department of Veterinary Services, Ministry of Livestock and Fisheries, P.O. Box 295, Zanzibar, Tanzania
| | - R. Ryoba
- Department of Animal Science and Production, Sokoine University of Agriculture, P.O. Box 3004, Chuo Kikuu, Morogoro, Tanzania
| |
Collapse
|