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Zhu C, Ye D, Zhou T, Cui Y, Yin J. High-Antimicrobial Gallium-Doped Zinc Oxide Thin Films on Bio-Based Poly(Ethylene Furanoate) Substrates for Food Packaging Application. MEMBRANES 2023; 13:239. [PMID: 36837742 PMCID: PMC9959704 DOI: 10.3390/membranes13020239] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Thin films of gallium-doped zinc oxide (GZO), with a thickness of around fifty nanometers were deposited on bio-based poly(ethylene furanoate) (PEF) substrates by radio-frequency sputtering. By optimizing the Ga concentration in the target, the optics, water vapor barrier and antibacterial properties of PEF/GZO composite films can be adjusted. The highest visible light transmittance of the samples was around 85.1%. Furthermore, by introducing some GZO films with typical concentrations, the water vapor barrier and antibacterial properties of PEF films were improved. The optimized water vapor permeability of PEF/GZO composite film was 5.3 × 10-12 g·m/m2·s·Pa, and the highest antibacterial rate can reach 99.85% after 4 h. By XPS analysis, the antibacterial mechanism in the samples is envisaged to be mainly due cytotoxicity of Ga ions. The above results indicate that PEF/GZO films have great potential in the field of antibacterial food packaging.
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Affiliation(s)
- Chaoting Zhu
- Institute of Medical Instruments, Zhejiang Pharmaceutical College, Ningbo 315201, China
| | - Danling Ye
- Institute of Medical Instruments, Zhejiang Pharmaceutical College, Ningbo 315201, China
| | - Tianqi Zhou
- Institute of Medical Instruments, Zhejiang Pharmaceutical College, Ningbo 315201, China
| | - Yashuang Cui
- Institute of Medical Instruments, Zhejiang Pharmaceutical College, Ningbo 315201, China
| | - Jianbing Yin
- Center for Medical Device Adverse Events Monitoring of Zhejiang, Zhejiang Medical Products Administration, Hangzhou 310009, China
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Gachara G, Suleiman R, El Kadili S, Ait Barka E, Kilima B, Lahlali R. Drivers of Post-Harvest Aflatoxin Contamination: Evidence Gathered from Knowledge Disparities and Field Surveys of Maize Farmers in the Rift Valley Region of Kenya. Toxins (Basel) 2022; 14:toxins14090618. [PMID: 36136556 PMCID: PMC9500662 DOI: 10.3390/toxins14090618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/23/2022] [Accepted: 09/01/2022] [Indexed: 11/23/2022] Open
Abstract
Maize-dependent populations in sub-Saharan Africa are continually exposed to aflatoxin poisoning owing to their regular consumption of this dietetic cereal. Being a staple in Kenyan households, consumption of maize-based meals is done almost daily, thereby exposing consumers to aflatoxicoses. This study assessed awareness levels, knowledge disparities, and perceptions regarding aflatoxin contamination at the post-harvest phase among farmers in the Rift Valley Region of Kenya. Households were randomly selected using a geographical positioning system (GPS) overlay of the agro-ecological zones within Uasin Gishu and Elgeyo Marakwet counties. Face-to-face interviews were conducted in 212 smallholder and large-scale farms. The study documented the demographic profiles of farmers and knowledge, awareness, and perceptions of aflatoxin contamination using a pre-designed structured questionnaire. Most farmers were familiar with aflatoxins and the adverse effects they present to health (61.32%). Almost all the farmers (94.37%) were aware of storage molds and food-spoilage fungi. However, few farmers adopted good post-harvest practices (PHPs), such as avoiding premature harvests (49.8%), using well-ventilated storage spaces (44.6%), grain sorting (30.5%), proper drying of maize (17.8%), and using hermetic bags for storage (30.5%). Conclusively, intensified farmer education is required to train farmers on good PHPs to protect their maize from aflatoxigenic fungi and aflatoxin accumulation.
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Affiliation(s)
- Grace Gachara
- Department of Food Sciences and Agro-Processing, School of Engineering and Technology, Sokoine University of Agriculture, Morogoro P.O. Box 3006, Tanzania
- Southern Africa Centre of Excellence for Infectious Diseases (SACIDS), SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro P.O. Box 3019, Tanzania
- Correspondence: (G.G.); (R.L.); Tel.: +255-725109725 (G.G.); +212-55-30-02-39 (R.L.)
| | - Rashid Suleiman
- Department of Food Sciences and Agro-Processing, School of Engineering and Technology, Sokoine University of Agriculture, Morogoro P.O. Box 3006, Tanzania
| | - Sara El Kadili
- Department of Animal Production, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco
| | - Essaid Ait Barka
- Unité de Recherche Résistance Induite et Bio-Protection des Plantes-EA 4707, Université de Reims Champagne-Ardenne, 51100 Reims, France
| | - Beatrice Kilima
- Department of Food Sciences and Agro-Processing, School of Engineering and Technology, Sokoine University of Agriculture, Morogoro P.O. Box 3006, Tanzania
| | - Rachid Lahlali
- Phytopathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknès, Km10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco
- Correspondence: (G.G.); (R.L.); Tel.: +255-725109725 (G.G.); +212-55-30-02-39 (R.L.)
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Namulawa VT, Mutiga S, Musimbi F, Akello S, Ngángá F, Kago L, Kyallo M, Harvey J, Ghimire S. Assessment of Fungal Contamination in Fish Feed from the Lake Victoria Basin, Uganda. Toxins (Basel) 2020; 12:toxins12040233. [PMID: 32272644 PMCID: PMC7232351 DOI: 10.3390/toxins12040233] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/28/2020] [Accepted: 04/02/2020] [Indexed: 12/17/2022] Open
Abstract
The emergence of commercial fish farming has stimulated the establishment of fish feed factories in Uganda. However, no information is available on the safety of the feed, mainly due to lack of mycotoxin testing facilities and weak regulatory systems. A study was carried out to examine fungal colonization and mycotoxin contamination in fish feed samples (n = 147) of different types collected from nine fish farms (n = 81) and seven fish feed factories (n = 66) in the Lake Victoria Basin (LVB). Fungi were isolated in potato dextrose agar, grouped into morphotypes and representative isolates from each morphotype were identified based on the internal transcribed spacer (ITS) region of ribosomal DNA sequences. Aflatoxin B1 (AFB1) and total fumonisin (combinations of B1, B2 and B3; hereinafter named fumonisin) levels in feed samples were determined by enzyme-linked immunosorbent assay (ELISA). A wide range of fungi, including toxigenic Aspergillus flavus and Fusarium verticillioides, were isolated from the fish feed samples. AFB1 was detected in 48% of the factory samples and in 63% of the farm samples, with toxin levels <40 and >400 µg/kg, respectively. Similarly, 31% of the factory samples and 29% of the farm samples had fumonisin contamination ranging between 0.1 and 4.06 mg/kg. Pellets and powder had higher mycotoxin contamination compared to other commercially available fish feed types. This study shows AFB1 as a potential fish feed safety issue in the LVB and suggests a need for more research on mycotoxin residues in fish fillets.
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Affiliation(s)
- Victoria Tibenda Namulawa
- National Agricultural Research Organization, Aquaculture Research & Development Center, P.O. Box 530, Kampala 00256, Uganda;
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
- Correspondence:
| | - Samuel Mutiga
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
- Department of Plant Pathology, University of Arkansas, Fayetteville, NC 72701, USA
| | - Fred Musimbi
- National Agricultural Research Organization, Aquaculture Research & Development Center, P.O. Box 530, Kampala 00256, Uganda;
| | - Sundy Akello
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
| | - Fredrick Ngángá
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
| | - Leah Kago
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
| | - Martina Kyallo
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
| | - Jagger Harvey
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
- Feed the Future Innovation Lab for the Reduction of Post-Harvest Loss, and Department of Plant Pathology; Kansas State University, Manhattan, KS 66506, USA
| | - Sita Ghimire
- Biosciences eastern and central Africa-International Livestock Research Institute (BecA–ILRI) Hub, P.O. Box 30709-00100, Nairobi 00100, Kenya; (S.M.); (S.A.); (F.N.); (L.K.); (M.K.); (J.H.); (S.G.)
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Bedoya-Serna CM, Michelin EC, Massocco MM, Carrion LCS, Godoy SHS, Lima CG, Ceccarelli PS, Yasui GS, Rottinghaus GE, Sousa RLM, Fernandes AM. Effects of dietary aflatoxin B1 on accumulation and performance in matrinxã fish (Brycon cephalus). PLoS One 2018; 13:e0201812. [PMID: 30089140 PMCID: PMC6082536 DOI: 10.1371/journal.pone.0201812] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 07/22/2018] [Indexed: 11/19/2022] Open
Abstract
Aflatoxins (AF) can be cumulative in fish tissues and can influence weight, length, feed intake and survival depending on the species. The aim of this work is to measure performance and aflatoxin levels in tissues of matrinxã (Brycon cephalus) fish chronically exposed to aflatoxin. Aflatoxin was incorporated into fish diets at the following levels: Control Feed + 0 μg AFB1 kg-1; A. Feed + 10 μg AFB1 kg-1; B. Feed + 20 μg AFB1 kg-1; C. Feed + 50 μg AFB1 kg-1. It was used one tank per treatment, each one with 150 juvenile fish, and three replicates within each tank were used for sampling, that was carried out monthly over a period of six months. Aflatoxin was quantified by HPLC in fish liver and muscle after clean up using immunoaffinity columns. Performance was evaluated by using weight, length, consumption and survival rate. Muscle and liver aflatoxin levels were below the limit of detection in all control samples. Aflatoxins B2, G1 and G2 were not detected in any tissues. Traces (values between limits of detection and quantification) of AFB1 were observed in liver tissue in treatment A from day 30 through 90, reaching 0.32 μg AFB1 kg-1 at 150 days of exposure. Treatment B presented traces up to day 60 and had, with a maximum level of 0.39 μg AFB1 kg-1 at 150 days of exposure. Treatment C had aflatoxin residues after day 30, with values ranging from 0.17 to 0.61 μg AFB1 kg-1 during exposure. Muscle samples only had traces of AFB1 in all treatments. Fish was affected by exposure to AFB1 with higher values (P<0.05) for weight and length in treatments A, B and C relative to controls. Therefore, results indicate that matrinxã do not accumulate AFB1 residues in edible tissues, but chronic exposure affects the species.
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Affiliation(s)
- Carolina M. Bedoya-Serna
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo - USP, Pirassununga, São Paulo, Brazil
| | - Euder C. Michelin
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo - USP, Pirassununga, São Paulo, Brazil
| | - Marina M. Massocco
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo - USP, Pirassununga, São Paulo, Brazil
| | - Lucas C. S. Carrion
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo - USP, Pirassununga, São Paulo, Brazil
| | - Silvia H. S. Godoy
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo - USP, Pirassununga, São Paulo, Brazil
| | - Cesar G. Lima
- Department of Basic Sciences, Faculty of Animal Science and Food Engineering, University of São Paulo - USP, Pirassununga, São Paulo, Brazil
| | - Paulo S. Ceccarelli
- Chico Mendes Institute for Biodiversity Conservation - ICMBio, Pirassununga, São Paulo, Brazil
| | - George S. Yasui
- Chico Mendes Institute for Biodiversity Conservation - ICMBio, Pirassununga, São Paulo, Brazil
| | - George E. Rottinghaus
- Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, United States of America
| | - Ricardo L. M. Sousa
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo - USP, Pirassununga, São Paulo, Brazil
| | - Andrezza M. Fernandes
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo - USP, Pirassununga, São Paulo, Brazil
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Mutiga SK, Hoffmann V, Harvey JW, Milgroom MG, Nelson RJ. Assessment of Aflatoxin and Fumonisin Contamination of Maize in Western Kenya. PHYTOPATHOLOGY 2015; 105:1250-1261. [PMID: 25894319 DOI: 10.1094/phyto-10-14-0269-r] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We conducted a survey of aflatoxin and fumonisin in maize in western Kenya. In a regional survey of aflatoxin conducted in 2009 across three agroecological zones within three administrative regions, milled maize samples were collected from 985 patrons of 26 hammer mills. Aflatoxin contamination was detected in 49% of samples and was above the regulatory (10 ppb) in 15% of the samples overall; 65% of samples from a drought-prone area were over the limit. In a detailed survey in Bungoma County, we investigated aflatoxin and fumonisin contamination in four popular maize varieties at harvest and after 2 and 4 months of storage. We collected whole-grain samples from farmers' storage sheds and milled samples from patrons of local mills. Mean aflatoxin contamination was identical for storage sheds and mills at 2.3 ppb. In all, 41% of the samples from mills had detectable aflatoxin, with 4% over the regulatory limit, whereas 87% had detectable fumonisin, with 50% over the regulatory limit (1 ppm). Mean contamination levels did not change during storage. Maize varieties differed in fumonisin contamination, with the most popular varieties vulnerable to both mycotoxins and weevils, which are potential factors in exacerbating mycotoxin contamination. Mycotoxin surveillance is important not just in areas known previously for aflatoxin contamination and acute poisoning but also is needed in all maize-producing regions.
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Affiliation(s)
- S K Mutiga
- First, fourth, and fifth authors: School of Integrative Plant Science, Section of Plant Pathology and Plant-Microbe Biology, Cornell University, Ithaca, NY 14853; second author: International Food Policy Research Institute, 2033 K Street NW, Washington DC 20006; and third author: Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI) Hub, P.O. Box 30709, Nairobi 00100, Kenya
| | - V Hoffmann
- First, fourth, and fifth authors: School of Integrative Plant Science, Section of Plant Pathology and Plant-Microbe Biology, Cornell University, Ithaca, NY 14853; second author: International Food Policy Research Institute, 2033 K Street NW, Washington DC 20006; and third author: Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI) Hub, P.O. Box 30709, Nairobi 00100, Kenya
| | - J W Harvey
- First, fourth, and fifth authors: School of Integrative Plant Science, Section of Plant Pathology and Plant-Microbe Biology, Cornell University, Ithaca, NY 14853; second author: International Food Policy Research Institute, 2033 K Street NW, Washington DC 20006; and third author: Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI) Hub, P.O. Box 30709, Nairobi 00100, Kenya
| | - M G Milgroom
- First, fourth, and fifth authors: School of Integrative Plant Science, Section of Plant Pathology and Plant-Microbe Biology, Cornell University, Ithaca, NY 14853; second author: International Food Policy Research Institute, 2033 K Street NW, Washington DC 20006; and third author: Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI) Hub, P.O. Box 30709, Nairobi 00100, Kenya
| | - R J Nelson
- First, fourth, and fifth authors: School of Integrative Plant Science, Section of Plant Pathology and Plant-Microbe Biology, Cornell University, Ithaca, NY 14853; second author: International Food Policy Research Institute, 2033 K Street NW, Washington DC 20006; and third author: Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI) Hub, P.O. Box 30709, Nairobi 00100, Kenya
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6
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Starch and thermal treatment, important factors in changing detectable fumonisins in maize post-harvest. J Cereal Sci 2015. [DOI: 10.1016/j.jcs.2014.10.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Alldrick A. Chemical safety of cereal-based foods: risk management considerations. QUALITY ASSURANCE AND SAFETY OF CROPS & FOODS 2014. [DOI: 10.3920/qas2013.0325] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- A.J. Alldrick
- Campden BRI, Station Road, Chipping Campden, GL55 6LD, United Kingdom
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8
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Abrar M, Anjum FM, Butt MS, Pasha I, Randhawa MA, Saeed F, Waqas K. Aflatoxins: Biosynthesis, Occurrence, Toxicity, and Remedies. Crit Rev Food Sci Nutr 2013; 53:862-74. [DOI: 10.1080/10408398.2011.563154] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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9
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Atukwase A, Kaaya AN, Muyanja C. Dynamics of Fusarium and fumonisins in maize during storage – A case of the traditional storage structures commonly used in Uganda. Food Control 2012. [DOI: 10.1016/j.foodcont.2012.01.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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10
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Ono EYS, Silva MD, Hashimoto EH, Vizoni E, Kawamura O, Sugiura Y, Hirooka EY. Mycotoxicological quality evaluation of corn samples used by processing industries in the Northern region of Paraná State, Brazil. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2010; 25:1392-9. [PMID: 19680847 DOI: 10.1080/02652030802136204] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Based on fungal and fumonisin contamination of 870 freshly harvested samples, the quality of corn used by processing industries in the Northern region of Parana State, Brazil (2003 and 2004 crop-year) was evaluated. Sampling was carried out for each crop at two points in the production chain, i.e. at reception by the processors and at the pre-drying step. Corn samples were more frequently contaminated with Fusarium sp. (100%) and Penicillium sp. (84.1-95.3%) than Aspergillus sp. (5.6-19.8%). Fumonisin B(1) (FB(1)) was detected in all samples from the two points in both crop-years. FB(1) levels ranged 0.02-11.83 microg g(-1) in the reception and 0.02-10.98 microg g(-1) in the pre-drying samples of the 2003 crop. Samples from the 2004 crop showed FB(1) levels ranging 0.03-12.04 microg g(-1) in the reception and 0.06-7.74 microg g(-1) in the pre-drying samples. FB(2) levels ranged 0.02-5.25 microg g(-1) in the reception and 0.01-7.89 microg g(-1) in the pre-drying samples (2003 crop-year). In samples from the 2004 crop, FB(2) levels ranged 0.02-6.12 microg g(-1) in the reception and 0.05-3.47 microg g(-1) in the pre-drying samples. Low fumonisin levels were detected in most corn samples used by processors in the Northern region of Parana State, showing a decreasing trend in fumonisin contamination over the years.
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Affiliation(s)
- Elisabete Yurie Sataque Ono
- Department of Biochemistry and Biotechnology, Center of Exact Sciences, State University of Londrina, Londrina, Parana, Brazil.
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Menniti A, Gregori R, Neri F. Activity of natural compounds on Fusarium verticillioides and fumonisin production in stored maize kernels. Int J Food Microbiol 2010; 136:304-9. [DOI: 10.1016/j.ijfoodmicro.2009.10.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2009] [Revised: 09/18/2009] [Accepted: 10/09/2009] [Indexed: 11/25/2022]
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12
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Sørensen JL, Aveskamp MM, Thrane U, Andersen B. Chemical characterization of Phoma pomorum isolated from Danish maize. Int J Food Microbiol 2009; 136:310-7. [PMID: 19932925 DOI: 10.1016/j.ijfoodmicro.2009.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Revised: 10/16/2009] [Accepted: 11/01/2009] [Indexed: 12/01/2022]
Abstract
Strains of the genus Phoma are often isolated from various environmental samples including cereals and maize. In the present study we performed a chemical characterization of strains isolated from Danish samples derived from whole plant material collected at harvest. All strains were isolated using a recently developed isolation medium and identified morphologically as P. pomorum. This species is placed in the Phoma section Peyronellaea and strains of other members in this section were also included in the present study. Sequence analysis of the internal transcribed spacer region (ITS) grouped the Danish P. pomorum strains with representative P. pomorum strains isolated from other sources. The metabolite production on dichloran Rose Bengal yeast extract sucrose agar (DRYES) was analyzed and the strains were clustered using an in-house Chemical Image Analysis (CIA) program. The resulting tree showed three clusters, one containing all P. pomorum strains, one containing all Epicoccum nigrum strains and finally a large cluster containing strains of the remaining species, which could not be differentiated due to insufficient metabolite production. The separation of P. pomorum from the other species resulted mainly from the ability to produce isocoumarins. Several isocoumarins were produced by P. pomorum strains with diaporthinic acid as the predominant analogue, but diaporthin, dichlorodiaporthin, diaporthinol, citreo-isocoumarin, 6-methyl citreo-isocoumarin and citreo-isocoumarinol were also identified. This is the first time that a Phoma species has been reported as a producer of isocoumarins.
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Affiliation(s)
- Jens Laurids Sørensen
- Center for Microbial Biotechnology, Department of Systems Biology, Building 221, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark.
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Da Silva M, Garcia GT, Vizoni E, Kawamura O, Hirooka EY, Ono EYS. Effect of the time interval from harvesting to the pre-drying step on natural fumonisin contamination in freshly harvested corn from the State of Parana, Brazil. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2008; 25:642-9. [PMID: 18473218 DOI: 10.1080/02652030701618310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Natural mycoflora and fumonisins were analysed in 490 samples of freshly harvested corn (Zea mays L.) (2003 and 2004 crops) collected at three points in the producing chain from the Northern region of Parana State, Brazil, and correlated to the time interval between the harvesting and the pre-drying step. The two crops showed a similar profile concerning the fungal frequency, and Fusarium sp. was the prevalent genera (100%) for the sampling sites from both crops. Fumonisins were detected in all samples from the three points of the producing chain (2003 and 2004 crops). The levels ranged from 0.11 to 15.32 microg g(-1)in field samples, from 0.16 to 15.90 microg g(-1)in reception samples, and from 0.02 to 18.78 microg g(-1)in pre-drying samples (2003 crop). Samples from the 2004 crop showed lower contamination and fumonisin levels ranged from 0.07 to 4.78 microg g(-1)in field samples, from 0.03 to 4.09 microg g(-1)in reception samples, and from 0.11 to 11.21 microg g(-1)in pre-drying samples. The mean fumonisin level increased gradually from < or = 5.0 to 19.0 microg g(-1)as the time interval between the harvesting and the pre-drying step increased from 3.22 to 8.89 h (2003 crop). The same profile was observed for samples from the 2004 crop. Fumonisin levels and the time interval (rho = 0.96) showed positive correlation (p < or = 0.05), indicating that delay in the drying process can increase fumonisin levels.
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Affiliation(s)
- M Da Silva
- Department of Biochemistry and Biotechnology, State University of Londrina, Londrina, Paraná, Brazil
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Ono E, Silva M, Ono M, Vizoni E, Garcia G, Kawamura O, Sabino M, Sugiura Y, Hirooka E. Implication of pre-drying steps with natural fumonisin contamination levels in freshly harvested corn. WORLD MYCOTOXIN J 2008. [DOI: 10.3920/wmj2008.1050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Maize quality regarding fumonisin contamination of 390 freshly harvested samples used by maize processing industries in the Northern region of Parana State, Brazil (2003 crop) was evaluated and correlated to the time elapsed from harvesting to the pre-drying step. Sampling was carried out at three points of the maize production chain, immediately after harvesting (n=100), at the industry delivery posts (n=200) and before the drying process (n=90). Fumonisin B1 (FB1) was detected in all the samples from the three points of the maize production chain. FB1 levels ranged from 0.11 to 12.68 µg/g (mean 1.81±2.12 µg/g) in the field samples, 0.10 to 11.83 µg/g (mean 1.83±1.75 µg/g) in the reception samples and from 0.02 to 10.98 µg/g (mean 2.31±2.38 µg/g) in the pre-drying samples. FB2 levels ranged from 0.01 to 5.26 µg/g (mean 0.84±0.94 µg/g) in the field samples, from 0.02 to 5.25 µg/g (mean 0.74±0.69 µg/g) in the reception samples and from 0.07 to 7.89 µg/g (mean 1.25±1.29 µg/g) in the pre-drying samples. Although there was no significant difference in mean fumonisin levels among the field, reception and pre-drying samples by the Tukey multiple comparison test (P<0.05), there was a positive correlation (P<0.05) between fumonisin levels and the time elapsed (p=0.95) from harvesting to the pre-drying step. Therefore reduction in the harvest/drying interval would be essential to assure product quality and safety and minimise potential health hazards.
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Affiliation(s)
- E. Ono
- Department of Biochemistry and Biotechnology, State University of Londrina, P.O. Box 6001, 86051-980 Londrina, Paraná, Brazil
| | - M. Silva
- Department of Biochemistry and Biotechnology, State University of Londrina, P.O. Box 6001, 86051-980 Londrina, Paraná, Brazil
| | - M. Ono
- Department of Pathological Sciences, State University of Londrina, P.O. Box 6001, 86051-980 Londrina, Paraná, Brazil
| | - E. Vizoni
- Department of Applied Mathematics, State University of Londrina, P.O. Box 6001, 86051-980 Londrina, Paraná, Brazil
| | - G. Garcia
- Integrada Agroindustrial Cooperative, 86380-000 Andirá, Paraná, Brazil
| | - O. Kawamura
- Faculty of Agriculture, Department of Biochemistry and Food Science, Kagawa University, Ikenobe, Miki-cho, Kita-gun, 761-0765 Kagawa, Japan
| | - M. Sabino
- Instituto Adolfo Lutz, 01246-902 São Paulo, SP, Brazil
| | - Y. Sugiura
- Department of Food Chemistry, Kobe Institute of Health, 4-6 Minatojima-nakamachi, Chuo-ku, Kobe 650-0046, Japan
| | - E. Hirooka
- Department of Food Science and Technology, State University of Londrina, P.O. Box 6001, 86051-980 Londrina, Paraná, Brazil
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15
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Influence of macro- and micronutrient fertilization on fungal contamination and fumonisin production in corn grains. Food Control 2008. [DOI: 10.1016/j.foodcont.2007.01.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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17
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Adejumo TO, Hettwer U, Karlovsky P. Occurrence of Fusarium species and trichothecenes in Nigerian maize. Int J Food Microbiol 2007; 116:350-7. [PMID: 17412440 DOI: 10.1016/j.ijfoodmicro.2007.02.009] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2006] [Revised: 02/13/2007] [Accepted: 02/17/2007] [Indexed: 12/01/2022]
Abstract
A total of 180 maize samples meant for human consumption from four maize-producing states of southwestern Nigeria were screened for twelve major Fusarium mycotoxins (trichothecenes). Mycological examination of the samples showed that Fusarium verticillioides was the most commonly isolated fungi (71%), followed by F. sporotrichioides (64%), F. graminearum (32%), F. pallidoroseum (15%), F. compactum (12%), F. equiseti (9%), F. acuminatum (8%), F. subglutinans (4%) and F. oxysporum (1%). The trichothecenes include deoxynivalenol (DON), 3, mono-acetyldeoxynivalenol (3-AcDON), 15, mono-acetyldeoxynivalenol (15-AcDON), nivalenol (NIV), HT-2 toxin (HT-2), neosolaniol (NEO), T-2 toxin (T-2), T-2 tetraol and T-2 triol, diacetoxyscirpenol (DAS), MAS-monoacetoxyscirpenol (MAS) and fusarenone-X. Quantification was by high performance liquid chromatography coupled with mass spectroscopy (HPLC/MS); the detection limits for each of the mycotoxins varied between 20 and 200 microg kg(-1). Sixty six samples (36.3%) were contaminated with trichothecenes, DON (mean: 226.2 microg kg(-1); range: 9.6-745.1 microg kg(-1)), 3-AcDON (mean: 17.3 microg kg(-1); range: 0.7-72.4 microg kg(-1)) and DAS (mean: 16.0 microg kg(-1); range: 1.0-51.0 microg kg(-1)) were detected in 22%, 17% and 9% of total samples respectively. There were no 15-AcDON, NIV, HT-2, NEO, T-2, T-2 tetraol, T-2 triol, MAS and fusarenone-X detected. This is the first comprehensive report about the natural occurrence of DON, AcDON and DAS in maize for direct human consumption in Nigeria.
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Affiliation(s)
- Timothy O Adejumo
- Department of Microbiology, Adekunle Ajasin University, Akungba-Akoko, Nigeria.
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18
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Strosnider H, Azziz-Baumgartner E, Banziger M, Bhat RV, Breiman R, Brune MN, DeCock K, Dilley A, Groopman J, Hell K, Henry SH, Jeffers D, Jolly C, Jolly P, Kibata GN, Lewis L, Liu X, Luber G, McCoy L, Mensah P, Miraglia M, Misore A, Njapau H, Ong CN, Onsongo MTK, Page SW, Park D, Patel M, Phillips T, Pineiro M, Pronczuk J, Rogers HS, Rubin C, Sabino M, Schaafsma A, Shephard G, Stroka J, Wild C, Williams JT, Wilson D. Workgroup report: public health strategies for reducing aflatoxin exposure in developing countries. ENVIRONMENTAL HEALTH PERSPECTIVES 2006; 114:1898-903. [PMID: 17185282 PMCID: PMC1764136 DOI: 10.1289/ehp.9302] [Citation(s) in RCA: 262] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2006] [Accepted: 08/24/2006] [Indexed: 05/13/2023]
Abstract
Consecutive outbreaks of acute aflatoxicosis in Kenya in 2004 and 2005 caused > 150 deaths. In response, the Centers for Disease Control and Prevention and the World Health Organization convened a workgroup of international experts and health officials in Geneva, Switzerland, in July 2005. After discussions concerning what is known about aflatoxins, the workgroup identified gaps in current knowledge about acute and chronic human health effects of aflatoxins, surveillance and food monitoring, analytic methods, and the efficacy of intervention strategies. The workgroup also identified public health strategies that could be integrated with current agricultural approaches to resolve gaps in current knowledge and ultimately reduce morbidity and mortality associated with the consumption of aflatoxin-contaminated food in the developing world. Four issues that warrant immediate attention were identified: a) quantify the human health impacts and the burden of disease due to aflatoxin exposure; b) compile an inventory, evaluate the efficacy, and disseminate results of ongoing intervention strategies; c) develop and augment the disease surveillance, food monitoring, laboratory, and public health response capacity of affected regions; and d) develop a response protocol that can be used in the event of an outbreak of acute aflatoxicosis. This report expands on the workgroup's discussions concerning aflatoxin in developing countries and summarizes the findings.
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Affiliation(s)
- Heather Strosnider
- National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia 30341-3717, USA.
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19
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Samapundo S, Devlieghere F, De Meulenaer B, Geeraerd AH, Van Impe JF, Debevere JM. Predictive modelling of the individual and combined effect of water activity and temperature on the radial growth of Fusarium verticilliodes and F. proliferatum on corn. Int J Food Microbiol 2005; 105:35-52. [PMID: 16048733 DOI: 10.1016/j.ijfoodmicro.2005.06.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2004] [Revised: 04/11/2005] [Accepted: 06/09/2005] [Indexed: 11/17/2022]
Abstract
The major objective of this study was to develop validated models to describe the effect of a(w) and temperature on the radial growth on corn of the two major fumonisin producing Fusaria, namely Fusarium verticilliodes and F. proliferatum. The growth of these two isolates on corn was therefore studied at water activities between 0.810-0.985 and temperatures between 15 and 30 degrees C. Minimum a(w) for growth was 0.869 and 0.854 for F. verticilliodes and F. proliferatum, respectively. No growth took place at a(w) values equal to 0.831 and 0.838 for F. verticilliodes and F. proliferatum, respectively. The colony growth rates, g (mm d(-1)) were determined by fitting a flexible growth model describing the change in colony diameter (mm) with respect to time (days). Secondary models, relating the colony growth rate with a(w) or a(w) and temperature were developed. A third order polynomial equation and the linear Arrhenius-Davey model were used to describe the combined effect of temperature and a(w) on g. The combined modelling approaches, predicting g (mm d(-1)) at any a(w) and/or temperature were validated on independently collected data. All models proved to be good predictors of the growth rates of both isolates on maize within the experimental conditions. The third order polynomial equation had bias factors of 1.042 and 1.054 and accuracy factors of 1.128 and 1.380 for F. verticilliodes and F. proliferatum, respectively. The linear Arrhenius-Davey model had bias factors of 0.978 and 1.002 and accuracy factors of 1.098 and 1.122 for F. verticilliodes and F. proliferatum, respectively. The results confirm the general finding that a(w) has a greater influence on fungal growth than temperature. The developed models can be applied for the prevention of Fusarium growth on maize and the development of models that incorporate other factors important to mould growth on maize.
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Affiliation(s)
- S Samapundo
- Ghent University, Faculty of Agricultural and Applied Biological Sciences, Department of Food Technology and Nutrition, Laboratory of Food Microbiology and Food Preservation, Belgium
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20
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Samapundo S, Devliehgere F, De Meulenaer B, Debevere J. Effect of water activity and temperature on growth and the relationship between fumonisin production and the radial growth of Fusarium verticillioides and Fusarium proliferatum on corn. J Food Prot 2005; 68:1054-9. [PMID: 15895741 DOI: 10.4315/0362-028x-68.5.1054] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The two major fumonisin-producing Fusarium species are Fusarium verticillioides and Fusarium proliferatum. The growth and fumonisin production of these two isolates on corn was studied at water activities (a(w)) between 0.860 and 0.975 and at temperatures between 15 and 30 degrees C. Growth rates (g, mm/day) were obtained by linear regression during the linear phase of growth. In general, growth rates for both isolates increased significantly (P < 0.05) with increases in a(w) and temperature. Both fumonisin production and radial growth (mycelial development) for both isolates increased with a(w) at all temperatures investigated, but the effect of temperature on this relationship was not obvious. The effect of temperature on fumonisin production at high a(w) values optimal for growth was only marginal, whereas at lower a(w) values the effect of temperature was more pronounced, with more fumonisin production occurring at temperatures not optimal for growth. The optimum temperature for fumonisin production was between 15 and 25 degrees C. For F. proliferatum, the optimum temperature for growth at all a(w) values, 30 degrees C, resulted in the poorest fumonisin production. For both isolates, the slowest initial rate of fumonisin production was at 15 degrees C, the temperature at which the slowest growth rates were obtained.
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Affiliation(s)
- Simbarashe Samapundo
- Laboratory of Food Microbiology and Food Preservation, Department of Food Safety and Food Quality, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B 9000 Gent, Belgium
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21
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Fandohan P, Gnonlonfin B, Hell K, Marasas WFO, Wingfield MJ. Natural occurrence of Fusarium and subsequent fumonisin contamination in preharvest and stored maize in Benin, West Africa. Int J Food Microbiol 2005; 99:173-83. [PMID: 15734565 DOI: 10.1016/j.ijfoodmicro.2004.08.012] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2004] [Revised: 07/19/2004] [Accepted: 08/11/2004] [Indexed: 10/26/2022]
Abstract
The natural occurrence of Fusarium and fumonisin contamination was evaluated from 1999 to 2003 in both preharvest and stored maize produced by small-scale farmers in four agroecological zones of Benin. Mycological analyses revealed a predominance of both Fusarium and Aspergillus in maize samples compared to other genera. The two Fusarium species most commonly isolated from maize were Fusarium verticillioides (68%) and Fusarium proliferatum (31%). Atypical isolates of F. verticillioides with some characteristics of Fusarium andiyazi but apparently closer to F. verticillioides, because the isolates were all high fumonisin producers, were also found only on preharvest maize. Study of F. verticillioides strains showed the presence of extremely high fumonisin producers in Benin with total fumonisin levels ranging from 8240 to 16,690 mg/kg. Apart from 2002-2003, Fusarium occurrence was not significantly different from one zone to another, although a slight decrease was observed from south, humid, to north, drier. Fusarium occurrence varied somewhat from one season to another. It significantly decreased over the 6 months of storage. Widespread fumonisin occurrence in maize was observed. Most of the maize samples collected were found positive for fumonisin with levels ranging from not detected to 12 mg/kg in 1999-2000, 6.7 mg/kg in 2000-2001 and 6.1 mg/kg in 2002-2003. Fumonisin levels in maize were found to be significantly higher in the two southern zones during all the surveys. The highest mean total fumonisin level was detected in 1999-2000 in maize samples from the southern Guinea Savannah (SGS) (12 mg/kg), whereas in both 2000-2001 and 2002-2003, it was in samples from the forest mosaic savannah (FMS) (6.7 and 6.1 mg/kg, respectively). Fumonisin levels varied from one season to another and, throughout the storage time, showing a decreasing trend in each zone. However, this decrease was not significant every season. An increasing trend was observed during some seasons in the SGS and northern Guinea Savannah (NGS) zones. The results of this study emphasise that farmers and consumers, not only in Benin but also in other West African countries, should be alerted to the danger of fumonisin contamination in maize.
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Affiliation(s)
- P Fandohan
- Programme on Agricultural and Food Technology, National Institute of Agricultural Research of Benin, P. O. Box 128, Porto-Novo, Benin.
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22
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Omurtag GZ, Yazicioğlu D. Determination of fumonisins B1 and B2 in herbal tea and medicinal plants in Turkey by high-performance liquid chromatography. J Food Prot 2004; 67:1782-6. [PMID: 15330551 DOI: 10.4315/0362-028x-67.8.1782] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The purpose of this study was to measure the potential levels of fumonisin B1 (FB1) and fumonisin B2 (FB2) contamination in several herbal teas and medicinal plants that are consumed regularly in Turkey. FB1 and FB2 were detected using high-performance liquid chromatography with fluorescence detection after derivatization with o-phthaldialdehyde. A total of 115 commercially available herbal tea and medicinal plant samples were analyzed. The recoveries in black tea were 86.9+/-8.42% for FB1 and 102+/-6.80% for FB2 spiked with 1 microg/g of each analyte. Similarly, the mean recovery results in lime (linden) for FB1 and FB2 were 85.2+/-9.76% and 78.6+/-5.67%, respectively. The minimum detectable amounts for the o-phthaldialdehyde derivatives of FB1 and FB2 were 0.025 microg/g (1 ng injected) and 0.125 microg/g (5 ng), respectively. FB1 was detected in two samples (0.160 and 1.487 microg/g), and FB2 was detected in none of the samples.
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Affiliation(s)
- Gülden Z Omurtag
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Marmara University, 34668 Haydarpaşa, Istanbul, Turkey.
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23
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Marín S, Magan N, Ramos AJ, Sanchis V. Fumonisin-producing strains of Fusarium: a review of their ecophysiology. J Food Prot 2004; 67:1792-805. [PMID: 15330553 DOI: 10.4315/0362-028x-67.8.1792] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This review focuses on the fumonisin-producing Fusarium species and the ecophysiology of these species. The effects of environmental biotic and abiotic factors on germination, growth, and fumonisin B1 production by Fusarium verticillioides and Fusarium proliferatum have been investigated under laboratory, field, and storage conditions. An understanding of the factors involved in production of fumonisins is the first step in preventing accumulation of these toxins.
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Affiliation(s)
- Sonia Marín
- Food Technology Department, Lleida University, CeRTA-UTPV, Rovira Roure 191, 25198 Lleida, Spain.
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