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Search Results: 1 - 10 of 586436 matches for " N.A. Amusa "
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Bio-deterioration of breadfruit (Artocarpus Communis) in storage and its effects on the nutrient composition
N.A. Amusa, I. A. Kehinde, O. A Ashaye
African Journal of Biotechnology , 2002,
Abstract: The bio-deterioration of breadfruit in storage and its effects on the nutrient composition of the fruit was investigated at Ibadan, Southwestern Nigeria. Freshly dropped fruits were stored under laboratory conditions for a period of 9 days. Aspergillus niger, Rhizopus stolonifer, Botryodiplodia theobromae, Mycovellosiella fulva, Penicillium sp. and Aspergillus flavus, were found associated with deteriorating breadfruit in storage The freshly harvested breadfruit has 70.2% carbohydrate which reduced to 59.4% within 9 days of storage under room temperature. The amount of fat content, protein and the energy of the breadfruit also reduced in fruit samples stored for 9 days, while there was an increase in the moisture content, crude fibre, and ash content of the breadfruits in storage. The mineral contents also increased during the period of storage. (African Journal of Biotechnology: 2002 1(2): 57-60)
Effect of Processing on Nutritional, Microbiological and Sensory Properties of Kunun-Zaki (A Sorghum Based Non-Alcoholic Beverage) Widely Consumed in Nigeria
N.A. Amusa,O.A. Ashaye
Pakistan Journal of Nutrition , 2009,
Abstract: The effect of processing on Nutritional, Microbiological and Sensory Properties of Kunun-Zaki widely consumed was investigated at Ibadan Nigeria. The result of the analysis indicated that the highest % crude protein was found in the Kunun zaki samples from the Unseieved kunun flour followed by kunun samples from sieve kunun flour, while the least % crude protein was found in Traditionally processed kunun samples. There were no significant differences between the carbohydrates content of the traditionally processed kunun zaki and that processed using kunun flour. The PH of the traditionally processed Kunun zaki drinks were highest followed by kunun drinks processed from sieved kunun flour, while the least was found in kunun drinks processed from sieved kunun flour. The yeast and lactic acid bacterial count were highest in the traditionally processed kunun drink samples followed by kunun drinks processed from sieved kunun flour, while they were absent in kunun drinks processed from unseieved kunun flour. Coliform counts were found to be highest in the traditional processed kunun drinks, while the least count were obtained in kunun drinks from unseieved kunun flour. The traditionally processed kunun drinks was most preferred in terms of color, followed by kunun drinks from the sieved kunun flour while the least was found with kunun drinks from unseieved kunun flour. With regards to taste and texture, there was no significant difference between the kunun drinks traditionally processed and that from the sieved kunun flour, however, these were significantly different from the kunun drinks from the unseieved kunun flour.
Microbiological and Nutritional Quality of Hawked Kunun (A Sorghum Based Non-Alcoholic Beverage) Widely Consumed in Nigeria
N.A. Amusa,O.A. Odunbaku
Pakistan Journal of Nutrition , 2009,
Abstract: The microbiological and nutritional quality of freshly processed and hawked kunun drinks in South Western Nigeria was investigated at Ibadan, Nigeria. The microbes found associated with both the hawked and the laboratory prepared kunun samples are Lactobacillus plantarum, Bacillus sutilis, B. cereus, Streptococus feaceaum, S. lactis, Staphylococcus aureus, Micrococcus acidiophilis, Escherishai coli, Pseudomonas aureginosa, Saccharomysces cerevisiae, Candida mycoderma, Aspergillus niger, Penicillium oxalicum and Fusarium oxysporum. However, the freshly processed kunun drinks harbored no coliform bacteria. The crude protein content of the hawked kunun drinks was found higher than that of the laboratory processed kunun samples, while the PH of the Kunun zaki drinks were highest in the laboratory processed samples. However, there were no significant differences between the carbohydrates contents of the laboratory processed kunun drinks sample and that of the hawked kunun drinks.
The Effect of Temperature and Relative Humidity on Pawpaw Fruit Rot in South-Western Nigeria
R.A. Baiyewu,N.A. Amusa
World Journal of Agricultural Sciences , 2005,
Abstract: Fungi found associated with fruit rot of pawpaw (Carica papaya L. ) in South-western Nigeria includes Rhizopus nigricans, Aspergilus niger, Fusarium moniliforme, Curvularia lunata and Collectotrichum capsicis. All were pathogenic on the test pawpaw fruits varieties (Isolo, JS22 and Homestead) in this study. The most pathogenic being C. lunata followed by R. nigricans, while the least rot was induced by C. capsicis. Results reveal that optimum temperature for maximum rot, range from 30-35°C, while fruits stored above or below this temperature showed blemishes. The relative humidity for maximum rot in this research range from 60-80%. Pawpaw fruits stored well at relative humidity below 40%. Hence, 30-35°C temperature and 35-40% relative humidities are recommended for the control of these common pawpaw fruit rot pathogens.
Evaluation of Four Spray Regimes of Monocrotophos for Control of Earias spp. Damage to Seed Kenal (Hibiscus cannabinus L.)
T.A. Fadare,N.A. Amusa
World Journal of Agricultural Sciences , 2005,
Abstract: The effect of timing of monocrotophos application on its efficacy for the control of budworm, Earias spp. on seed kenaf was evaluated for two consecutive seasons in replicated field trials at Moor Plantation, Ibadan, Nigeria. Monocrotophos was applied at the same rate, three times per season over four different kenaf growth phases and its effect (in time) on budworm attack and damages to young plant shoots, flower and capsules was noted. Results showed that spray applications initiated at 50% flower set stage were as effective as those initiated at the flower bud stage for budworm control. Results indicated significant differences between different times of chemical application. However, applications initiated at the flower bud stage gave very low percent budworm damage (12) and larger kenaf seed yields (1,444 kg ha 1) as compared to the unsprayed control treatment that gave high percent budworm damage (25) and smaller kenaf seed yields (672 kg ha 1) in the first season. The results of the second season trial followed a similar trend. There were significant differences between the different things of spray initiation. Applications initiated at the 50% flower set were about as effective as those initiated at the flower bud stage. This treatment gave very low percent lower bud damage (ii) and larger seed yields (1453 kg ha 1) than the unsprayed control that gave larger percent budworm damages (27) and very low yields (690 kg ha 1). From these results, chemical application initiated at the flower bud stage will effectively reduce budworm damages and consequently increase kenaf seed yields.
The Role of Natural History Museum in the Development of a Nation
J.O. Fayenuwo,N.A. Amusa
Research Journal of Applied Sciences , 2012, DOI: 10.3923/rjasci.2010.236.241
Abstract: The role of natural history museum in the life of a nation involves: conducting research into the vast natural history heritage and biodiversity of the country; serving as a repository, of natural objects, source materials and taxonomists in that country; creating scientific awareness; on natural history resources of the nation through annotated exhibitions for public enlightenment in display galleries, publications works hops and human development etc., natural history museum prepares data bases on natural history resources, ecological diversity of the country and thus facilitate an information-retrieval system on them for use by the public, tourists and the scientific community as a basis for sustainable development. It also provides identification services on natural objects and rich fauna, flora and minerals resources to user groups especially pest control workers in Agriculture, veterinary/human medicine and science teachers. The Obafemi Awolowo University, Natural history museum Ile-ife Nigeria has in her repository among other things, Type specimens e.g., the Ewekoro formation and giant fossil turtle from Sokoto. Scientists deposit their type specimens in museum all over the world. It is hoped that more scientists all over Nigeria will continue to send their type specimens to the museum. Other individuals and groups should also donate towards the activities of the museum as A.G Leventis foundation has recently donated ≤460,000 (x14.8 million) to complete the museum s physical structure.
Commensal Bacterial Flora of Synodontis nigrita and Clarias gariepinus from River Osun, Southwest Nigeria, Nigeria
E.A.A. Olojo,N.A. Amusa,A. Osho,V.O. Badejo
Research Journal of Applied Sciences , 2012, DOI: 10.3923/rjasci.2010.231.235
Abstract: The microflora of the skin, gill and gut tissues of two freshwater fish species namely Synodontis nigrita and Clarias gariepinus from river Osun at Epe in southwestern Nigeria were investigated. Ten adult samples of each fish species were analyzed for the isolation of microflora using the biochemical test. Bacteria isolated were Staphylococcus aureus, Baccillus species, Streptococcus sp., Baccillus subtilis, Escherichia coli and Pseudomonas aeruginosa from the skin, gill and gut of both fish species. The occurrence and isolation of potential pathogens from the skin, gill and gut of the fish samples obtained from river Osun is an indication that fishes could serve as vectors for the propagation of diseases among consumers of fishes from river Osun. The result of this study showed that fish can serve as bio-indicators of the microbial quality of water body from where they are caught. It also showed that River Osun stands the risk of a potential organic pollution especially with the presence of Baccillus species on the skin, gill and gut of S. nigrita.
Effect of Nickel on the Microflora of Gill, Gut and Skin of Clarias gariepinus
E.A.A. Olojo,N.A. Amusa,P.E. Omogbethai
Research Journal of Applied Sciences , 2012, DOI: 10.3923/rjasci.2012.322.328
Abstract: A study was carried on the effect of nickel exposure on the miroflora of the skin and gut of African catfish, Clarias gariepinus. C. gariepinus of different stages was applied with nickel and monitored every 24 h over a period of 672 h in wooden vats under a laboratory condition. Eleven adult samples, thirty six post juvenile and thirty one juvenile samples were analyzed for the isolation of microflora using biochemical test. Both gram +ve and gram -ve bacteria were isolated. The gram -ve bacteria isolated were mainly rods and members of the Family Enterobacteriaceae including Proteus and Serratia. These species were more widely distributed in and more frequently isolated from the gut regions than the gram +ve bacteria which were represented by Streptococcus and Staphylococcus species. Proteus species and Streptococcus species isolated from the gut extracts were also found in the skin region. Bacillus species and Pseudomonas species were also found in both the skin and gut regions of the fish. The number and types of microbes in the skin and gut regions are similar.
The Occurrence of Leaf Rust Disease of Mulberry Plant (Morus alba) in Lowland Humid Forest of Southwestern Nigeria
R.A. Baiyewu,N.A. Amusa,G.O. Idowu,A. Smith
Plant Pathology Journal , 2005,
Abstract: The etiology and epidemiology of leaf rust of mulberry plant (Morus alba) was investigated at Ibadan, South-western Nigeria in the lowland humid tropics. Cerotilium fici was associated with the leaf blight and seedlings blight mulberry. Field symptoms of the disease are common both in the dry and wet season beginning with numerous pin-head sized circular brownish to black eruptive lesions on the surface of the leaves. Affected leaves become yellowish and wither as the disease becomes severe. Matured leaves are more susceptible to the disease. The pathogen was also harbored by Centrosema pubescens Benth and Chromoleana odorantum Linn found growing within the mulberry plots.
Vascular Wilt of Roselle (Hibiscus sabdariffa L. var. sabdariffa) in the Humid Forest Region of South-western Nigeria
N.A. Amusa,A.A. Adegbite,M.O. Oladapo
Plant Pathology Journal , 2005,
Abstract: The etiology of vascular wilt of Roselle (Hibiscus sabdariffa var. sabdariffa L.) was investigated at Ibadan, in the humid forest region of south-western Nigeria. Out of 250 Roselle plants examined, 26% exhibited symptoms of wilt. The vascular wilting of Roselle was associated with Fusarium oxysporum Schlecht. Emend. Snyd and Hans. Plant debris was found associated with the fungus.
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