Osun State Polytechnic

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Mojeed Oladapo O.,Osun State Polytechnic
Pakistan Journal of Nutrition | Year: 2013

Aspergillus flavus exhibited high growth and amylase production. Various Polysaccharides, including soluble starch, sorghum, cassava peel and maize induces high amylase production with maximal amylase activity at 2% W/V. An initial linear increase in amylase activity with increase in substrate concentration was obtained up to 2% W/V. An antagonistic relationship was obtained between amylase activity and substrate concentrations higher than 2% W/V, in the culture filtrate of Aspergillus flavus grown in shake flasks. The maximum growth and amylase production was obtained on the sixth day of incubation at a pH of 7.0 temperature of 29±1°C and 80 rpm. It is concluded from this study that cassava peel as well as sorghum may be an alternative carbon substrate for large scale cultivation of A. flavus for amylase production. © Asian Network for Scientific Information, 2013.


Tubers and leaves of sweet potatoes (Ipomoea batatas) are often contaminated with Aspergillus infection due to aflatoxin production. The present study was carried out to investigate the extent of in-vivo aflatoxin production due to Aspergillus infection, in different genotypes of sweet potatoes with different morphological and phenotypic characteristics. The genotypes selected were TIS 8441, CIP Tanzania, TIS 8164, TIS 2532.0P1 .13, TIS 87/ 0087 as well as Anamo Adayeba Pupa (local breed). Optimal aflatoxins were produced under aerobic conditions, at 30°C and high inoculum density during five days of incubation period. A strong relationship was observed between inoculum density and aflatoxin concentration. The physical and biochemical composition of the tubers and leaves of Anamo Adayeba Pupa makes it susceptible to Aspergillus infection and aflatoxin production. The fresh and dry leaves of Anamo Adayeba pupa, contained 2.208 ppb and 2.18 ppb of aflatoxins however, high levels of Aspergillosis was produced in the tubers with negligible amount of aflatoxins, however TIS 8441, CIP Tanzania, TIS 8164, 'TIS 2532OP.1.13 were resistant to Aspergillus infection and aflatoxin production. The positive regression model showed correlation coefficient (R) value of 0.912 and 0.906 in fresh and dried leaves of Anamo Adayeba Pupa.A significant and positive correlation was found between Aspergillus infection and aflatoxin contamination. © Triveni Enterprises, Lucknow (India).


Abiodun O.A.,Osun State Polytechnic | Abiodun O.A.,University of Ibadan | Akinoso R.,University of Ibadan
Food Chemistry | Year: 2014

The effects of delayed harvesting on the chemical and pasting properties of trifoliate yam flour were studied. The tubers were harvested at 7, 8, 9, 10 and 11 months after maturity and were processed into flours. Chemical and pasting properties of the flours were determined. White trifoliate yam flour at 11 months was significantly different (p < 0.05) from other flours in dry matter and fibre contents but the lignin content (1.83%) was not significant different (p > 0.05) from yellow trifoliate yam flour at 11 months. Amylose and starch contents decreased while the sugar contents increased with harvesting periods. Yellow trifoliate yam flour had higher amylose at 10 months while the white trifoliate yam flour had higher starch at 9 months and sugar contents at 11 months. Potassium and sodium were the major minerals found in the yam with higher values in yellow trifoliate yam flours. Peak viscosity and breakdown decreased while the holding strength and final viscosities increased with harvesting periods. Harvesting trifoliate yam tubers at 7-9 months produced flour with high quality and prevents post harvest losses. © 2013 Elsevier Ltd. All rights reserved.


Adeleke R.O.,Osun State Polytechnic | Odedeji J.O.,Osun State Polytechnic
Pakistan Journal of Nutrition | Year: 2010

In this study the functional properties of wheat and sweet potato tuber (Ipomea batatas) flour blends were investigated. The sweet potato tubers were brought from local farm in Offa Kwara State. The tubers were thoroughly sorted, washed, peeled, sliced, blanched, soaked, drained, sundries and milled into flour. Wheat flour used was purchased at Orisumbare market in Osogbo Osun State. The wheat and sweet potato flour were blended using the following ratios (WF:SPF:100:0, 90:10, 85:15, 80:20, 75:25, 0:100). These samples were thereafter subjected to functional properties analysis. The results revealed that as more and more sweet potato flour was added to wheat flour, there was significant effect on the functional properties. © Asian Network for Scientific Information, 2010.


Odedeji J.O.,Osun State Polytechnic | Adeleke R.O.,Osun State Polytechnic
Pakistan Journal of Nutrition | Year: 2010

This study was conducted to investigate the pasting characteristics of wheat and sweet potato tuber (Ipomea batatas) flour blends. The sweet potato tubers were bought from a local farm in Offa, Kwara State. The tubers were thoroughly sorted, washed, peeled, sliced, balanced, drained, sundried and milled into flour. Commercial wheat flour was used and purchased from Igbona market in Osogbo, Osun State of Nigeria. The wheat and sweet potato flour were blended using the following ratios (WF: SPF: 100: 0, 90: 10, 85: 15, 80: 20, 75: 25, 0: 100). These samples were thereafter subjected to pasting characteristics analysis. The results revealed that as more and more sweet potato flour was added to wheat flour there was improvement in the pasting properties. © Asian Network for Scientific Information, 2010.


Olaposi A.R.,Osun State Polytechnic | Adunni A.O.,Osun State Polytechnic
Pakistan Journal of Nutrition | Year: 2010

This study evaluates the proximate composition of Bombax glabrum seeds and the physico- chemical properties of the seeds oil. Protein and fat content of Bombax glabrum seeds were 10.23% and 58.23% respectively. Carbohydrate content of the seed was low (16.60%) when compared to other oil seeds like soybeans and groundnut. The relative density of the oil was 1.125. The value was above the recommended codex standard for edible vegetable oils. The refractive index for the Bombax glabrum seed oil was 0.628 which was lower than the standard value obtained for cotton seed oil (1.458-1.466) and groundnut oil (1.460-1.465). Saponification and iodine value obtained were 42.93 mgKOH/g and 3.38 Wij's. The unsaponifiable matter was 4.20 g/kg and was lower than the values reported for soybeans, cotton seeds etc. Acid value was 0.71 mgKOH/g. The peroxide value (3.64 meq/kg) was lower than the codex standard for edible vegetable oils (10 meq/kg). Moisture content and free fatty acid of the oil were low. The seed is a good source of protein and fat. © Asian Network for Scientific Information, 2010.


Olaposi A.R.,Osun State Polytechnic | Adunni A.O.,Osun State Polytechnic
Pakistan Journal of Nutrition | Year: 2010

This work was carried out to evaluate the nutritional composition of three traditional vegetables in Iree, Osun State. The leafy vegetables used were Cnidoscolus chayamansa (iyana ipaja), Solanium nodiflorum (Ogumo), and Senecio biafrae (worowo). The vegetables were washed in potable water to remove unwanted matters and were analyzed for proximate and mineral All analyses were carried out in three replicates and the data were evaluated for significant differences in their means with Analysis of Variance (ANOVA) (p≤0.05). Cnidoscolus chayamansa had higher protein content (5.91%) and carbohydrate content (8.88%) but there was no significant difference (p≥0.05) in the crude fibre value and that of Senecio biafrae. Senecio biafrae had higher moisture content (89%) while Solanium nodiflorum had higher ash and fat content which were significantly different (p≤0.05) from the other vegetables. Cnidoscolus chayamansa had higher values in all the mineral contents determined and these were significantly different (p≤0.05) from other vegetable. There were no significant difference (p≥0.05) in potassium, calcium and iron contents of Solanium nodiflorum and Senecio biafrae. The three vegetables are good sources of nutrients which could be consumed for normal growth. © Asian Network for Scientific Information, 2010.


Abiodun O.A.,Osun State Polytechnic | Adeleke R.O.,Osun State Polytechnic
Pakistan Journal of Nutrition | Year: 2010

This study evaluates four Cucurbit species in lree, Osun state, Nigeria. The species used were Cucumeropsis manni (Naudin), Cucumis sativus, Leganaria siceraria and Cucumeropsis edulis (Hook). Proximate and mineral analyses were carried out on the shelled Cucurbit species. Protein, fat, ash, crude fibre, moisture and carbohydrate content ranged from 33.80-39.96%, 40.26-45.21%, 3.35-4.89%, 1.66-2.16%, 4.78-5.21 and 7.08-14.15% respectively. There were significant difference (p≤0.05) in the values obtained in protein, fat, ash moisture content and carbohydrate. But there was no significant difference (p≤0.05) in crude fibre values for Cucumeropsis edulis and Cucumis sativus. Cucumis sativus had higher calcium content (2.03%) while Cucumeropsis manni had higher values in Mg (8.87%), Na (162.76 ppm), Mn (107.72 ppm) and Fe (39.71 ppm) contents. Leganaria siceraria also had higher values in K (5.43%), Cu (5.09 ppm) and Zn (19.75 ppm). Acid value ranged from 3.13-4.22 mgKOH/g, free fatty acid ranged from 3.4-3.9%. Saponification and peroxide values of 188-193 mg KOH/g and 9.7-11.6 Meq/kg were obtained for the melon seeds oils. Also, iodine values for the melon seeds ranged from 95.5-98.2 Wijs. All the seeds serve as good sources of protein, fat and minerals. © Asian Network for Scientific Information, 2010.


Adeleke R.O.,Osun State Polytechnic
Pakistan Journal of Nutrition | Year: 2010

Evaluation of conformity of major commodity food industries to sanitation standards was carried out. Major fourteen food industries were investigated include dairy industry, bakery, beverage factory, fish processing industry, brewery, cereal processing and fruit canning industry. The survey shows that most Nigerian food industries were designed, constructed and operated without sufficient consideration for many important sanitary factors and without adequate facilities of the right kind or the type of conditions which would promote good personal hygiene and impeccable plant sanitation. Few of the industries performed satisfactorily in some of the area investigated while four companies attained the minimum standard specified in this survey on all overall basis. Much more attention needs to be paid to rodent and pest control, water treatment, waste disposal and utilization. © Asian Network for Scientific Information, 2010.


Adeleke R.O.,Osun State Polytechnic | Abiodun O.A.,Osun State Polytechnic
African Journal of Agricultural Research | Year: 2010

This work was carried out to determine the nutritional composition of breadnut (Artocarpus camansi) seeds. Matured breadnut seeds were obtained opened and the seeds were removed for analysis. They were analyzed for proximate mineral, amino acids, fatty acids and organic acids composition. The results showed the values of the proximate composition of the breadnut seeds as: protein (4.87%), fat (3.48%) and carbohydrate (26.11%). Ash and crude fiber were 3.43 and 1.20% respectively. The highest mineral content value was in phosphorus 363 mg/kg followed by potassium 325 mg/kg and sodium 248 mg/kg while the lowest value was in iron 0.05 mg/kg and copper 0.12 mg/kg. The predominant essential amino acids determined in the seeds were leucine 392 mg/kg, phenylalamine 312 mg/kg, arginine 293 mg/kg, isoleucine 245 mg/kg and lysine 275 mg/kg. The oil was rich in palmitic 21.4%, oleic 12.4% and linolenic acid 14.8%. Lactic and citric acids were the predominant organic acid while malic, acetic and butyric acids were present in trace amount. The breadnut seeds could be used as composite flour and the oil could be a good source of edible oil for human consumption. © 2010 Academic Journals.

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