Titah Charles Pindeh, Nouck Alphonse Ervé, Chia Genevieve Kain, T. R. Kinge
{"title":"Sources, preservation and quality status of some locally cultivated vegetable seeds in Ndop, Northwest region, Cameroon","authors":"Titah Charles Pindeh, Nouck Alphonse Ervé, Chia Genevieve Kain, T. R. Kinge","doi":"10.5897/jyfr2022.0208","DOIUrl":"https://doi.org/10.5897/jyfr2022.0208","url":null,"abstract":"","PeriodicalId":256295,"journal":{"name":"Journal of Yeast and Fungal Research","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115390609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cellulases and xylanases are enzymes of industrial significance, particularly in the pulp, paper, textile, and animal feed industries. Moreover, their utilization in the food industry, among them, bakery, brewery, winery and fruit and vegetable juice production, cannot be underestimated. One of the potential sources of enzymes is the filamentous fungi, and hence bio-prospecting of this specific group of microorganisms with the highest levels of cellulase and xylanase secretions is being continuously undertaken. The specific aim of this study was to isolate and characterize cellulase- and xylanase-producing filamentous fungi from termite mounds. Termite mounds have long been established as very good sources of filamentous fungi with the ability to secrete high levels of lignocellulolytic enzymes, and hence an ideal target for the bio-prospecting of cellulases and xylanases. In this study, various groups of filamentous fungi were isolated through enrichment and repeated sub-culturing. This was followed by screening using the Congo red plate-based assay. Cellulase and xylanase activities during the solid-state fermentation of wheat bran were detected and analyzed through spectrophotometry via the 3,5-dinitrosalicylic acid detection system for reducing sugars. The obtained fungal isolates were then finally characterized through zymography, reaction kinetics and morphological studies. Overall, a total of eight different groups of fungi, capable of decomposing cellulose and hemicellulose, were isolated, and their tentative identities established as Fusarium, Didymostible, Penicillium, Phytophthora, Oedocephalum, Aspergillus, Monosporascus and Acremonium. Taken together, findings of this study conceivably showed that termite mounds are a good source of filamentous fungi that in turn are also a good source of cellulases and xylanases that arguably, can be recommended for use in industrial and commercial settings. Key words: Filamentous fungi, lignocellulosic substrates, lignocellulolytic enzymes, cellulases, xylanases, termite mounds, termite nests, fungal combs.
{"title":"Diversity of cellulase- and xylanase-producing filamentous fungi from termite mounds","authors":"Angela Sibanda, O. Ruzvidzo, I. Ncube, T. Ncube","doi":"10.5897/jyfr2019.0189","DOIUrl":"https://doi.org/10.5897/jyfr2019.0189","url":null,"abstract":"Cellulases and xylanases are enzymes of industrial significance, particularly in the pulp, paper, textile, and animal feed industries. Moreover, their utilization in the food industry, among them, bakery, brewery, winery and fruit and vegetable juice production, cannot be underestimated. One of the potential sources of enzymes is the filamentous fungi, and hence bio-prospecting of this specific group of microorganisms with the highest levels of cellulase and xylanase secretions is being continuously undertaken. The specific aim of this study was to isolate and characterize cellulase- and xylanase-producing filamentous fungi from termite mounds. Termite mounds have long been established as very good sources of filamentous fungi with the ability to secrete high levels of lignocellulolytic enzymes, and hence an ideal target for the bio-prospecting of cellulases and xylanases. In this study, various groups of filamentous fungi were isolated through enrichment and repeated sub-culturing. This was followed by screening using the Congo red plate-based assay. Cellulase and xylanase activities during the solid-state fermentation of wheat bran were detected and analyzed through spectrophotometry via the 3,5-dinitrosalicylic acid detection system for reducing sugars. The obtained fungal isolates were then finally characterized through zymography, reaction kinetics and morphological studies. Overall, a total of eight different groups of fungi, capable of decomposing cellulose and hemicellulose, were isolated, and their tentative identities established as Fusarium, Didymostible, Penicillium, Phytophthora, Oedocephalum, Aspergillus, Monosporascus and Acremonium. Taken together, findings of this study conceivably showed that termite mounds are a good source of filamentous fungi that in turn are also a good source of cellulases and xylanases that arguably, can be recommended for use in industrial and commercial settings. \u0000 \u0000 \u0000 \u0000 Key words: Filamentous fungi, lignocellulosic substrates, lignocellulolytic enzymes, cellulases, xylanases, termite mounds, termite nests, fungal combs.","PeriodicalId":256295,"journal":{"name":"Journal of Yeast and Fungal Research","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127548374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This review reports and discusses all available information about the fungal carotenoids such general characters, derivatives, common names, chemical structure, molecular formula, color, bioactivity, and industrial applications in medicine, pharmacology, food processing, cosmetics, dyeing and others. It also reviews the classification of the fungal carotenoids, biosynthetic pathway, distribution and function inside the fungal cells. Approximately, 34 fungal carotenoids derivatives are widely distributed in fungal genera species and fungal groups. Fermented carotenoids produce by fungi from agro-industrial wastes have many advantages and solve the production problems. Development of the fungal carotenoids productivity is reported by two main strategies such as metabolic and genetic engineering. Key words: Fungal carotenoids, natural pigment, applications, bioactivity.
{"title":"Fungal and yeast carotenoids","authors":"M. Mostafa","doi":"10.5897/JYFR2019.0192","DOIUrl":"https://doi.org/10.5897/JYFR2019.0192","url":null,"abstract":"This review reports and discusses all available information about the fungal carotenoids such general characters, derivatives, common names, chemical structure, molecular formula, color, bioactivity, and industrial applications in medicine, pharmacology, food processing, cosmetics, dyeing and others. It also reviews the classification of the fungal carotenoids, biosynthetic pathway, distribution and function inside the fungal cells. Approximately, 34 fungal carotenoids derivatives are widely distributed in fungal genera species and fungal groups. Fermented carotenoids produce by fungi from agro-industrial wastes have many advantages and solve the production problems. Development of the fungal carotenoids productivity is reported by two main strategies such as metabolic and genetic engineering. \u0000 \u0000 \u0000 \u0000 Key words: Fungal carotenoids, natural pigment, applications, bioactivity.","PeriodicalId":256295,"journal":{"name":"Journal of Yeast and Fungal Research","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122523703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Dabiré, Elise Sanon, K. M. Guissou, Samson Nankone, P. E. Zida, P. Sankara
Burkina Faso has abundant wild mushrooms, but very few inventories have been carried out to record these species. The shortage of taxonomic studies in Burkina Faso on wild mushroom species limits their knowledge. Three species of the genus Amanita from Burkina Faso are reported and fully described in this paper. They are Amanita pulverulenta Beeli, Amanita citrina (Schaeffer) Persoon and Amanita virido-odorata Beeli. All the three species were collected in the classified forest of Niangoloko, preciously in the mosaic gallery forests dominated by Berlinia grandiflora (Vahl) Hutch. & Dalziel and Isoberlinia doka Craib & Stapf (Caesalpiniaceae) and are assumed to be ectomycorrhizal. Key words: Fungi, gallery forest, Niangoloko, Burkina Faso.
{"title":"Taxonomical study of the genus Amanita from Western Burkina Faso","authors":"K. Dabiré, Elise Sanon, K. M. Guissou, Samson Nankone, P. E. Zida, P. Sankara","doi":"10.5897/jyfr2019.0193","DOIUrl":"https://doi.org/10.5897/jyfr2019.0193","url":null,"abstract":"Burkina Faso has abundant wild mushrooms, but very few inventories have been carried out to record these species. The shortage of taxonomic studies in Burkina Faso on wild mushroom species limits their knowledge. Three species of the genus Amanita from Burkina Faso are reported and fully described in this paper. They are Amanita pulverulenta Beeli, Amanita citrina (Schaeffer) Persoon and Amanita virido-odorata Beeli. All the three species were collected in the classified forest of Niangoloko, preciously in the mosaic gallery forests dominated by Berlinia grandiflora (Vahl) Hutch. & Dalziel and Isoberlinia doka Craib & Stapf (Caesalpiniaceae) and are assumed to be ectomycorrhizal. \u0000 \u0000 \u0000 \u0000 Key words: Fungi, gallery forest, Niangoloko, Burkina Faso.","PeriodicalId":256295,"journal":{"name":"Journal of Yeast and Fungal Research","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115509479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Sibanda, O. Ruzvidzo, C. Zvidzai, A. Mashingaidze, C. Murungweni
The versatile nature of the commercial mushroom, Pleurotus ostreatus (Jacq.: Fr.) Kumm., provides basis for continued exploration of its biochemical processes during solid state fermentation on various lignocellulosic biomass as potential substrates. As a fungal organism, P. ostreatus feeds on lignocellulose by secreting various extracellular enzymes responsible for breaking down this organic polymer into smaller and simple compounds that the hyphae can absorb to develop into mycelia. In this study, P. ostreatus was assessed for its ability to grow on Eichhornia crassipes (Mart.) Solms-Laubach., or water hyacinth biomass and possibly, utilizing it as a substrate. E. crassipes is an aquatic herbaceous plant, often branded as the world’s worst aquatic weed due to its invasive aggression, negative impact onto the aquatic ecosystems, and the cost usually associated with its control. When cultured onto the biomass of this nuisance weed followed by assessment by the agar plate-based clearing assay method and spectrophotometry, P. ostreatus demonstrated its practical ability to secrete cellulases, xylanases, pectinases, lignin peroxidases and laccases, thus showing its physiological capabilities to optionally utilize E. crassipes as a substrate. If properly optimized, this approach can be remarkably used as a sustainable and cost-effective strategy to manage E. crassipes in Zimbabwe. Key words: Pleurotus ostreatus, Eichhornia crassipes, lignocellulosic biomass, lignocellulolytic enzymes, cellulases, xylanases, pectinases, lignin peroxidases, laccases.
{"title":"Exploring for the possibility of utilizing Pleurotus ostreatus to manage Eichhornia crassipes in Zimbabwe","authors":"N. Sibanda, O. Ruzvidzo, C. Zvidzai, A. Mashingaidze, C. Murungweni","doi":"10.5897/JYFR2019.0188","DOIUrl":"https://doi.org/10.5897/JYFR2019.0188","url":null,"abstract":"The versatile nature of the commercial mushroom, Pleurotus ostreatus (Jacq.: Fr.) Kumm., provides basis for continued exploration of its biochemical processes during solid state fermentation on various lignocellulosic biomass as potential substrates. As a fungal organism, P. ostreatus feeds on lignocellulose by secreting various extracellular enzymes responsible for breaking down this organic polymer into smaller and simple compounds that the hyphae can absorb to develop into mycelia. In this study, P. ostreatus was assessed for its ability to grow on Eichhornia crassipes (Mart.) Solms-Laubach., or water hyacinth biomass and possibly, utilizing it as a substrate. E. crassipes is an aquatic herbaceous plant, often branded as the world’s worst aquatic weed due to its invasive aggression, negative impact onto the aquatic ecosystems, and the cost usually associated with its control. When cultured onto the biomass of this nuisance weed followed by assessment by the agar plate-based clearing assay method and spectrophotometry, P. ostreatus demonstrated its practical ability to secrete cellulases, xylanases, pectinases, lignin peroxidases and laccases, thus showing its physiological capabilities to optionally utilize E. crassipes as a substrate. If properly optimized, this approach can be remarkably used as a sustainable and cost-effective strategy to manage E. crassipes in Zimbabwe. \u0000 \u0000 \u0000 \u0000 Key words: Pleurotus ostreatus, Eichhornia crassipes, lignocellulosic biomass, lignocellulolytic enzymes, cellulases, xylanases, pectinases, lignin peroxidases, laccases.","PeriodicalId":256295,"journal":{"name":"Journal of Yeast and Fungal Research","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129488935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bosson-Vanga Henriette, Etien Angora Kpongbo, Konaté Abibatou, Valerie Bedia-Tanoh Akoua, M. Sébastien, Kiki-Barro Pulchérie, F. Kondo, D. Vincent, Y. William, M. Hervé
Superficial candidiasis is a real public health problem, especially in immunocompromised people and HIV-infected patients. Due to the toxic handicap and the high cost of antifungal drug treatment, people use medicinal plants, which are relatively more accessible. Medicinal plants are an important source of novel antimicrobial agents. This study aims to determine the in vitro antimicrobial activity of aqueous and methanolic extracts from different parts of plants species against Candida albicans. Six plants species from the flora of Cote d’Ivoire were screened for anticandidal activities by ethnobotanical study. These plants species were: Bridelia ferruginea, Citrus aurantium, Pycnanthus angolensis, Desmodium adscendens, Zanthoxylum zanthoxyloides Lam. and Mareya micrantha L. Methanolic and aqueous extracts from the powder of leaves and/or barks samples of each species were tested using the bioautographic method in F254 glass silica gel plate, with Miconazole as reference. Bioautography assay was used to account antifungal compounds in plant extracts. Bridelia ferruginea, Pycnanthus angolensis, and Zanthoxylum zanthoxyloides Lam showed good activity. The minimal inhibitory concentrations (MIC) values against Candida albicans ranged between 12.5 and 100 mg/ml. Bioautography results demonstrated that active chemical compounds of the alcoholic extracts of the plants (flavonoids, alcaloids, polyterpenes, polyphenols and sterols) were responsible for antimicrobial activity. The Ivorian pharmacopoeia is full of medicinal remedies. Three plants of our study have shown a good activity on strains of Candida albicans. Key words: Candida albicans, antifungal activity, plants, bioautography.
{"title":"Anticandidosic activity of selected medicinal plants from Cte dIvoire","authors":"Bosson-Vanga Henriette, Etien Angora Kpongbo, Konaté Abibatou, Valerie Bedia-Tanoh Akoua, M. Sébastien, Kiki-Barro Pulchérie, F. Kondo, D. Vincent, Y. William, M. Hervé","doi":"10.5897/jyfr2018.0186","DOIUrl":"https://doi.org/10.5897/jyfr2018.0186","url":null,"abstract":"Superficial candidiasis is a real public health problem, especially in immunocompromised people and HIV-infected patients. Due to the toxic handicap and the high cost of antifungal drug treatment, people use medicinal plants, which are relatively more accessible. Medicinal plants are an important source of novel antimicrobial agents. This study aims to determine the in vitro antimicrobial activity of aqueous and methanolic extracts from different parts of plants species against Candida albicans. Six plants species from the flora of Cote d’Ivoire were screened for anticandidal activities by ethnobotanical study. These plants species were: Bridelia ferruginea, Citrus aurantium, Pycnanthus angolensis, Desmodium adscendens, Zanthoxylum zanthoxyloides Lam. and Mareya micrantha L. Methanolic and aqueous extracts from the powder of leaves and/or barks samples of each species were tested using the bioautographic method in F254 glass silica gel plate, with Miconazole as reference. Bioautography assay was used to account antifungal compounds in plant extracts. Bridelia ferruginea, Pycnanthus angolensis, and Zanthoxylum zanthoxyloides Lam showed good activity. The minimal inhibitory concentrations (MIC) values against Candida albicans ranged between 12.5 and 100 mg/ml. Bioautography results demonstrated that active chemical compounds of the alcoholic extracts of the plants (flavonoids, alcaloids, polyterpenes, polyphenols and sterols) were responsible for antimicrobial activity. The Ivorian pharmacopoeia is full of medicinal remedies. Three plants of our study have shown a good activity on strains of Candida albicans. \u0000 \u0000 \u0000 \u0000 Key words: Candida albicans, antifungal activity, plants, bioautography.","PeriodicalId":256295,"journal":{"name":"Journal of Yeast and Fungal Research","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128396645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Atamba Salano Odilia, M. M. Huxley, Wekesa Kasili Remmy, Iddi Boga Hamadi
Hot springs are aquatic environments with high temperatures. They harbor diverse groups of micro-organisms like fungi that have developed mechanisms to thrive at wide temperature ranges, according to their optimal growth requirements. Fungi are a large group of eukaryotic organisms with worldwide distribution, inhabiting a diverse range of extreme habitats from deserts to hyper saline environments. The fungal diversity of the hot spring along the shores of Lake Bogoria was investigated using a culture-dependent approach. Microbial mats and wet sediments were collected from three sampling points along the hot spring while water samples were gotten from the mouth of the hot spring on the shores of the lake. Physicochemical characteristics were recorded at the study sites. Samples from the hot spring were isolated on four different media at pH 10 and at a temperature of 30°C. A total of seventeen fungal isolates were identified using morphological, physiological and molecular characters. Furthermore, the isolates were screened for production of extracellular enzymes. All the fungal isolates variedly grew at pH ranging from 5 to 10, temperature range of 25 to 35°C and sodium chloride range of 5 to 30%. Based on experimental analysis, isolate B61 exhibited significant growth in the four parameters tested. Also all the seventeen isolates produced different extracellular enzymes such as amylases, lipases, proteases and esterases. Analysis of partial sequences using Blastn showed that about 11.7 and 29.1% of the isolates were affiliated with members belonging to the genera Penicillium and Aspergillus, respectively. A total of 12% of the isolates belonged to the genera Alternaria and Fusarium while another 41% of the isolates clustered closely with uncultured fungus. Fungal endophyte comprised 6%. Although the culture dependent method did not reveal the true diversity of the fungal community, the isolates recovered were a representation of thermotolerant, alkalitolerant and halotolerant microorganisms found in soda lake environments. The isolates have the potential to produce useful enzymes for biotechnological applications. Key words: Hot springs, tropical mycology, diversity, extremophiles.
{"title":"Isolation and characterization of fungi from a hot-spring on the shores of Lake Bogoria, Kenya","authors":"Atamba Salano Odilia, M. M. Huxley, Wekesa Kasili Remmy, Iddi Boga Hamadi","doi":"10.5897/JYFR2018.0182","DOIUrl":"https://doi.org/10.5897/JYFR2018.0182","url":null,"abstract":"Hot springs are aquatic environments with high temperatures. They harbor diverse groups of micro-organisms like fungi that have developed mechanisms to thrive at wide temperature ranges, according to their optimal growth requirements. Fungi are a large group of eukaryotic organisms with worldwide distribution, inhabiting a diverse range of extreme habitats from deserts to hyper saline environments. The fungal diversity of the hot spring along the shores of Lake Bogoria was investigated using a culture-dependent approach. Microbial mats and wet sediments were collected from three sampling points along the hot spring while water samples were gotten from the mouth of the hot spring on the shores of the lake. Physicochemical characteristics were recorded at the study sites. Samples from the hot spring were isolated on four different media at pH 10 and at a temperature of 30°C. A total of seventeen fungal isolates were identified using morphological, physiological and molecular characters. Furthermore, the isolates were screened for production of extracellular enzymes. All the fungal isolates variedly grew at pH ranging from 5 to 10, temperature range of 25 to 35°C and sodium chloride range of 5 to 30%. Based on experimental analysis, isolate B61 exhibited significant growth in the four parameters tested. Also all the seventeen isolates produced different extracellular enzymes such as amylases, lipases, proteases and esterases. Analysis of partial sequences using Blastn showed that about 11.7 and 29.1% of the isolates were affiliated with members belonging to the genera Penicillium and Aspergillus, respectively. A total of 12% of the isolates belonged to the genera Alternaria and Fusarium while another 41% of the isolates clustered closely with uncultured fungus. Fungal endophyte comprised 6%. Although the culture dependent method did not reveal the true diversity of the fungal community, the isolates recovered were a representation of thermotolerant, alkalitolerant and halotolerant microorganisms found in soda lake environments. The isolates have the potential to produce useful enzymes for biotechnological applications. \u0000 \u0000 Key words: Hot springs, tropical mycology, diversity, extremophiles.","PeriodicalId":256295,"journal":{"name":"Journal of Yeast and Fungal Research","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131438918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：