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1.

001-es BibID:BIBFORM135175
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:Growth Performance, Gut Integrity and Intestinal Microbiome Responses of Juvenile Common Carp (Cyprinus carpio L.) to Probiotic and Prebiotic Supplementation / Elshafia Ali Hamid Mohammed, Milán Fehér, Péter Bársony, Christopher Teye-Gaga, Levente Czeglédi, Csongor Freytag, Alex Váradi, Abdelhakam Esmaeil Mohamed Ahmed, Károly Pál
Dátum:2026
ISSN:2076-2615
Megjegyzések:The aim of this study was to examine the impact of the probiotics Saccharomyces cerevisiae (SC) and Pediococcus acidilactici (PA), as well as the prebiotic yeast cell wall extract (Cyberlindnera jadinii and S. cerevisiae) (YP), on the growth parameters, intestinal histomorphology, liver and gills normality, and gut microbiome of common carp (Cyprinus carpio L.). These feed supplements were subjected to a 60-day experimental period, during which 120 fish (26.4 ? 5.2 g) were distributed into four groups, with each group comprising 30 fish. The feed supplements were administered at a rate of 1 g/kg of body weight. Before the trial, the fish were acclimatized for two weeks, then injected with Passive Integrated Transponder (PIT) tags. The results showed that none of the feed supplements exhibited a significant effect (p > 0.05) on growth indices. In contrast, the villi length, villi width, muscular thickness, and crypt depth in the anterior, mid, and posterior intestine of the SC group exhibited significant (p < 0.05) improvements compared to the other groups. No alteration or abnormal growth were noticed in the gills and livers. The most dominant microbe genera in all groups, with abundances greater than 60% of the total, were Cetobacterium and Aeromonas. However, Polynucleobacter, Nordella, Mycoplasma, Romboutsia, and Staphylococcus species were present at lower abundances. The presence of Actinobacteria has been observed only in the intestine of fish that have been fed a diet supplemented with PA. It can be concluded that the tested probiotics and the yeast cell wall prebiotic have the potential to produce a remarkable improvement in intestinal morphology and a considerable change in the gut microbiome without notable effect on growth, livers, or gills of common carp.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
common carp
Pediococcus acidilactici
Saccharomyces cerevisiae
yeast extract
histomorphology
oxford nanopore sequencing
gut microbiota
Megjelenés:Animals. - 16 : 3 (2026), p. 433. -
További szerzők:Fehér Milán (1985-) (agrármérnök) Bársony Péter (1975-) (agrármérnök) Teye-Gaga, Christopher (1979-) Czeglédi Levente (1977-) (agrármérnök) Freytag Csongor (1993-) (biológus) Váradi Alex (1991-) (biológus) Ahmed, Abdelhakam Esmaeil Mohamed (1984-) (Food Engineer) Pál Károly (1978-) (mikrobiológus)
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2.

001-es BibID:BIBFORM131526
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:Octanoic Fatty Acid Significantly Impacts the Growth of Foodborne Pathogens and Quality of Mabroom Date Fruits (Phoenix dactylifera L.) / Elshafia Ali Hamid Mohammed, Károly Pál, Azza Siddig Hussien Abbo
Dátum:2025
ISSN:2673-9976
Megjegyzések:Mabroom dates (Phoenix dactylifera L.) are recognized as one of the most important crops in Qatar. Fresh fruit dates are susceptible to mould and post-harvest spoilage, resulting in a significant financial loss. Octanoic fatty acid (OFA) has been shown to regulate the growth of mould-causing organisms such as fungi and bacteria. It is known to have antibacterial properties. The objective of the current study was to evaluate the in vitro effect of OFA on the post-harvest pathogens of Mabroom fruits. Fresh, apparently healthy, and fully ripe Mabroom dates were obtained from the National Agriculture and Food Corporation (NAFCO). The chosen fruits were packed in sterile, well-ventilated plastic boxes and transported to the lab under controlled conditions. The fruits were distributed into five groups (G1 to G5). The groups G1, G2, and G3 received 1%, 2%, and 3.5% OFA, respectively, while G4 was left untreated and G5 was washed only with tap water as a positive control treatment. Each group contained 200 g of fresh and healthy semi-soft dates. The samples were then dried and incubated in a humidity chamber at 25 C 2 for seven days. The signs and symptoms of decay were monitored and recorded. The presence of pathogens was confirmed via phenotypic and microscopic-based methods. The results showed a significant difference (p - 0.05) among the groups. OFA at 3.5% had the strongest inhibitory action against post-harvest pathogens, followed by OFA2%. However, there were no differences (p ? 0.05) between OFA1% and the control groups. Aspergillus spp., Penicillium spp., Rhizopus spp., and Botrytis spp. were most abundant in the control group, followed by OFA2% and OFA1%, respectively. In conclusion, octanoic fatty acid at 3.5% may improve the quality of date fruits through its high antimicrobial activity, reduce the effect of post-harvest decay, minimize the loss of date fruits during storage, and improve the sustainability of date fruits. Further experiments are necessary to confirm the effectiveness of OFA as a green solution for sustainable date fruit production.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Mabroom dates
octanoic fatty acid
antimicrobial effect
Aspergillus niger
Rhizopus spp.
Megjelenés:Biology and Life Sciences Forum. - 47 (2025), p. 1-7. -
További szerzők:Pál Károly (1978-) (mikrobiológus) Abbo, Azza Siddig Hussien
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3.

001-es BibID:BIBFORM131465
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:Recent Knowledge in the Application of Saccharomyces in Aquaculture: A Bibliometric and Narrative Review / Elshafia Ali Hamid Mohammed, Béla Kovács, Károly Pál
Dátum:2025
ISSN:2079-6382
Megjegyzések:Aquaculture is a key food production sector responsible for meeting the nutritional needs of a rapidly growing global population. However, the emergence of disease outbreaks has become a major challenge for the aquaculture industry, resulting in significant economic losses. The use of costly and toxic antibiotics for treatment has a negative impact on the aquatic environment. Consequently, there has been a growing interest in probiotics as a non-antibiotic approach to manage disease outbreaks and improve fish performance. The use of the yeast Saccharomyces cerevisiae (SC) has shown remarkable benefits in aquaculture. In February 2025, a systematic search was conducted based on the Web of Science (WoS) database for the period 2015?2025 to identify relevant studies investigating the beneficial effects of SC in aquaculture. After searching on WoS, 466 documents were found and analyzed using R-bibliometric package for comprehensive analysis to identify research gap, trends, and distribution of global literature that focuses on SC in aquaculture. The most relevant and recent articles were reviewed, summarized and discussed. The yeast SC have shown a wide range of benefits, including improved growth performance, feed efficiency, enhanced diversity of the gut microbiome and immune response. The implementation of SC is becoming a recent trend and its efficacy in aquatic environments has been thoroughly investigated. This review aims to provide a valuable insight into SC as one of the most important aquaculture probiotics. It also emphasizes the need for further research to fully understand its benefits and the way it works.
Recent Knowledge in the Application of Saccharomyces in Aquaculture: A Bibliometric and Narrative Review / In: Antibiotics. - 14 : 8 (2025), p. 736. -
Tárgyszavak:Agrártudományok Állattenyésztési tudományok recenzió, folyóiratcikk-ismertetés
folyóiratcikk
Saccharomyces cerevisiae
probiotics
synbiotics aquaculture
growth performance
disease resistance
bibliometric analysis
Megjelenés:Antibiotics. - 14 : 8 (2025), p. 1-26. -
További szerzők:Kovács Béla (1963-) (mezőgazdasági kémia, angol szakfordító) Pál Károly (1978-) (mikrobiológus)
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4.

001-es BibID:BIBFORM130591
035-os BibID:(WoS)001515084400001 (Scopus)105008930805
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:Antibiotic Resistance in Aquaculture : challenges, Trends Analysis, and Alternative Approaches / Elshafia Ali Hamid Mohammed, Béla Kovács, Ronald Kuunya, Eltayeb Omaima Awad Mustafa, Azza Siddig Hussien Abbo, Károly Pál
Dátum:2025
Megjegyzések:Antibiotic resistance in aquaculture has emerged as a global crisis, representing a serious threat to the health of aquatic animals, environment, and human. The extensive use of antibiotics in aquaculture has led to rapid development of resistant bacterial strains, resulting in environmental contamination and the dissemination of resistant genes. Understanding of the research trends, key contributors, and thematic evolution of this field is essential for guiding future studies and policy interventions. The study aimed to conduct a bibliometric analysis of research on antibiotic resistance development in aquaculture, identifying key areas of research, leading contributors, emerging challenges, and alternative solutions. Data were extracted from the Web of Science (WoS) database covering the period from 2000 to 2025. A systematic search strategy was employed, utilizing terms including "antibiotic resistance" AND "bacteria," AND "aquaculture". Relevant publications were extracted from the WoS using these keywords. R-tool was then used to analyze the obtained metadata including keywords, citation patterns, and co-authored country. The analysis revealed a remarkable increase in publications over the past 25 years, with key contributions from China, India, and the USA. The most significant articles focused on the presence of multidrug resistant bacteria in the aquatic environments and, antibiotic-resistant genes, and horizontal gene transfer. Probiotics are the alternative solution to overcome the antibiotic resistance and enhance aquaculture sustainability. Future research should focus on the interdisciplinary collaboration, novel antimicrobial alternatives, and global monitoring approaches.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
aquaculture
antibiotic resistance
antibiotic resistance genes (ARGs)
bibliometric analysis
research trends
R software
Megjelenés:Antibiotics. - 14 : 6 (2025), p. 1-26. -
További szerzők:Kovács Béla (1963-) (mezőgazdasági kémia, angol szakfordító) Kuunya Ronald (1979-) (Phd) Eltayeb, Omaima Awad Mustafa (1976-) (orvos) Abbo, Azza Siddig Hussien Pál Károly (1978-) (mikrobiológus)
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5.

001-es BibID:BIBFORM130359
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:Alteration in Gut Microbiome of Common Carp (Cyprinus carpio L., 1758) Mediated by Probiotics and Yeast Prebiotic / Elshafia Ali Hamid Mohammed; Milán Fehér; Péter Bársony; Károly Pál
Dátum:2025
Megjegyzések:The objective of the present study was to examine the impact of dietary supplementation with probiotics and yeast cell wall prebiotics on the intestinal microbiota of common carp (Cyprinus carpio). A total of 96 carp, with an average body weight of 932 ? 161 g, were distributed into 12 fish tanks (800 L), with 8 fish/tank. The fish were fed a variety of experimental diets, including a basal diet only (CD) or a basal diet supplemented with the probiotic Pediococcus acidilactici (PA), the yeast probiotic Saccharomyces cerevisiae (SC), or the yeast cell wall prebiotic (YANG) at a concentration of 0.1% (1 g/kg) for a duration of 42 days. At the end of the trial, fish digesta were withdrawn, and the total bacterial community of the gut of common carp was analyzed using Illumina's NGS targeting the 16S rRNA gene. A Krona phyla richness pie chart showed that 11 bacterial phyla were recorded in fish fed YANG, with the top three phyla being Fusobacteria, Firmicutes, and Proteobacteria. In addition, 10 phyla were identified in fecal samples from carp fed PA, with the top three phyla being Proteobacteria, Firmicutes, and Fusobacteria. Furthermore, nine phyla were recorded for carp fed SC, with the top three phyla being Fusobacteria, Firmicutes, and Proteobacteria. However, carp fed a basal diet exhibited 14 phyla, with the most abundant phyla being Fusobacteriota, Bacteroidota, and Proteobacteria. This study concluded that the tested feed supplements could cause considerable alterations in the composition of the gut microbiome of carps reared in recirculating systems.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Pediococcus acidilactici
Saccharomyces cerevisiae
yeast prebiotic
common carp
16S rRNA gene
gut microbiota
gut health
Megjelenés:Biology and Life Sciences Forum. - 45 : 1 (2025), p. 1-8. -
További szerzők:Fehér Milán (1985-) (agrármérnök) Bársony Péter (1975-) (agrármérnök) Pál Károly (1978-) (mikrobiológus)
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6.

001-es BibID:BIBFORM130148
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:Octanoic Fatty Acid Significantly Impacts the Growth of Foodborne Pathogens and the Quality of Mabroom Date Fruits (Phoenix dactylifera L.) / Elshafia Ali Hamid Mohammed, Károly Pál, Azza Siddig Hussien Abbo
Dátum:2025
Megjegyzések:Mabroom date (Phoenix dactylifera L.), which belongs to the Arecaceae palm family, hasgained considerable importance as a staple food source for millions of people worldwide. This species is recognized as one of the most important agricultural crops in Qatar. Fresh fruit dates are susceptible to mold and postharvest bacterial spoilage, resulting in significant financial losses. Octanoic fatty acid (OFA) has been shown to regulate the growth of disease-causing organisms such as fungi and bacteria. It is known to have antibacterial properties. The objective of the current study was designed to evaluate the effect of OFA on postharvest pathogens of mabroom fruits under in vitro conditions. Fresh, healthy, and fully ripe mabroom dates were obtained from the National Agriculture and Food Corporation (NAFCO). The chosen fruits were packed in sterile, well-ventilated plastic boxes and transported under controlled conditions. Then, the fruits were distributed into five groups (G1 to G5). The groups G1, G2, and G3 received 1, 2, and 3.5% OFA, respectively, while G4 was left untreated and G5 was washed only with tap water. Each group contained 200 g of fresh and healthy semi-soft dates. The samples were then dried and incubated in a humidity chamber at 25?C ?2 for seven days. Signs and symptoms of decay were monitored and recorded. The presence of pathogens was confirmed by way of phenotypic- and microscopic-based methods. The results showed a significant difference (P ? 0.05) between the groups. OFA at 3.5% had the strongest inhibitory action against postharvest pathogens, followed by OFA 2%. However, there were no differences (P ? 0.05) between OFA 1% and the control groups. Aspergillus niger, Penicillium spp., Rhizopus spp., and Botrytis spp. were most abundant in the control group, followed by OFA 2% and OFA 1%, respectively. In conclusion, octanoic fatty acid at 3.5% may improve the quality of date fruit through its high antimicrobial activity, reduce the effect of post-harvest decay, minimize the loss of date fruit during storage, and improve the sustainability of date fruits.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok előadáskivonat
könyvrészlet
Megjelenés:The 2nd International Electronic Conference on Horticulture : Programme and Abstract Book. - p. 50-50.
További szerzők:Pál Károly (1978-) (mikrobiológus) Abbo, Azza Siddig Hussien
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7.

001-es BibID:BIBFORM130054
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:Recent Knowledge on the Probiotic Saccharomyces cerevisiae in Aquaculture: A Narrative Review / Elshafia A. H. Mohammed; Károly Pál
Dátum:2025
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
könyvrészlet
Megjelenés:The 4th International Electronic Conference on Antibiotics 21-23 May 2025 Online : Program and Abstract Book. - p. 59
További szerzők:Pál Károly (1978-) (mikrobiológus)
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8.

001-es BibID:BIBFORM129937
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:Occurrence of antibiotic resistance in aquaculture: a review of challenges and research trend analysis / Elshafia Ali Hamid Mohammed; Ronald Kuunya; Károly Pál
Dátum:2025
ISBN:978-963-688-044-6
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
könyvrészlet
Megjelenés:22nd Wellmann International Scientific Conference : Book of abstracts / eds. Dávid Köteles; Flórián Kovács; Ingrid Melinda Gyalai; László Beier; Szilárd Czóbel. - p. 54. -
További szerzők:Kuunya Ronald (1979-) (Phd) Pál Károly (1978-) (mikrobiológus)
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9.

001-es BibID:BIBFORM128331
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:Alteration of the gut microbiome of the common carp (Cyprinus carpio L., 1758) mediated by probiotics and yeast prebiotic / Elshafia Ali Hamid Mohammed; Milán Fehér; Péter Bársony; Károly Pál
Dátum:2025
Megjegyzések:The current study aimed to examine the relative impact of dietary supplementation on the intestinal microbiota of common carp, Cyprinus carpio L., 1758. Different types of dietary supplements, including the probiotic Pediococcus acidilactici, the yeast probiotic Saccharomyces cerevisiae, and a yeast-based multi-strain prebiotic, were tested at a concentration of 0.1% (1.0 g/1 kg). A total of 96 carps with an average body weight of 932?163 g were distributed in 12 fish tanks (1000 L), with 8 fish/tank. Fish received the experimental diet for 40 days. At the end of the trial, fish feces were withdrawn and the total bacterial community in the gut of common carp was analyzed using Illumina's NGS targeting the 16S rRNA gene. The Krona phyla richness pie chart showed that 11 bacterial phyla were recorded in fish fed the yeast prebiotic, with the top 3 phyla being Fusobacteria, Firmicutes, and Proteobacteria. Similarly, 10 phyla were found in fecal samples from carp fed P. acidilactici, with the top 3 phyla being Proteobacteria, Firmicutes, and Fusobacteria. Also, carp fed S. cerevisiae recorded nine phyla, the top three phyla being Fusobacteria, Firmicutes, and Proteobacteria. However, carp fed the basal diet only showed 14 phyla, with the most abundant phyla being Fusobacteriota, Bacteroidota, and Proteobacteria. This study concluded that the examined feed supplements can cause alteration in the composition of the gut microbiome of the carps reared in a recirculating system.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
könyvrészlet
Megjelenés:The 3rd International Electronic Conference on Animals / ed. Clive J. C. Phillips; Colin G. Scanes; Michael Hässig. - p. 89
További szerzők:Fehér Milán (1985-) (agrármérnök) Bársony Péter (1975-) (agrármérnök) Pál Károly (1978-) (mikrobiológus)
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10.

001-es BibID:BIBFORM128291
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:The potential use of Pediococcus spp. probiotic in aquaculture: a review / Elshafia Ali Hamid Mohammed, Abdelhakam Esmaeil Mohamed Ahmed, Christopher Teye-Gaga, Károly Pál
Dátum:2025
ISSN:2416-1640
Tárgyszavak:Agrártudományok Élelmiszertudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
Megjelenés:Acta Agraria Debreceniensis. - 1 (2025), p. 1-9. -
További szerzők:Ahmed, Abdelhakam Esmaeil Mohamed (1984-) (Food Engineer) Teye-Gaga, Christopher (1979-) Pál Károly (1978-) (mikrobiológus)
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11.

001-es BibID:BIBFORM128158
035-os BibID:(WoS)001453402100001 (Scopus)105001173360
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:The Significance of Probiotics in Aquaculture : A Review of Research Trend and Latest Scientific Findings / Elshafia Ali Hamid Mohammed; Abdelhakam Esmaeil Mohamed Ahmed; Béla Kovács; Károly Pál
Dátum:2025
Tárgyszavak:Agrártudományok Élelmiszertudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Antibiotics. - 14 (2025), p. 2-26. -
További szerzők:Ahmed, Abdelhakam Esmaeil Mohamed (1984-) (Food Engineer) Kovács Béla (1963-) (mezőgazdasági kémia, angol szakfordító) Pál Károly (1978-) (mikrobiológus)
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12.

001-es BibID:BIBFORM125913
Első szerző:Mohammed, Elshafia Ali Hamid (agrármérnök)
Cím:The Integration Between the Dietary Pediococcus acidilactici Probiotic and Aquaculture: A review / Elshafia Ali Hamid Mohammed; Károly Pál
Dátum:2024
ISBN:978-963-623-106-4
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
könyvrészlet
Megjelenés:IX. Gödöllői Állattenyésztési Tudományos Nap : Előadások és poszterek összefoglaló kötete = 9th Scientific Day of Animal Breeding in Gödöllő : Book of Abstracts of Presentations and Posters / szerk. Bényi Erzsébet; Bodnár Ákos; Pajor Ferenc; Póti Péter. - p. 75. -
További szerzők:Pál Károly (1978-) (mikrobiológus)
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