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Physicochemical and microbiological analysis of canned and bottled fruit juices sold in Owerri Metropolis

100%
Chukwuemeka I. S., Chukwuebuka I. F.
World News of Natural Sciences
|
2017
|
vol. 14
97-105
EN
This study was designed to investigate the physiochemical and microbiological analysis of canned and bottled fruit juices sold in Owerri metropolis. The samples were subjected to standard microbiological analysis and physiochemical parameters. The titratable acidity of the fruit juice samples ranged from 0.15% to 0.31%, while the ash content of all the samples varied from 0.32% to 0.63%. The total solid of all the samples was from 4.10% to 12.25%. The moisture content of the samples ranged from 2.32% to 4.81% and the pH was from 3.0 to 4.01. The total bacteria count (CFU/ml) of all the fruit juice samples showed to be from 1.1×102 to 4.1×102. Finally, the total fungi count (CFU/ml) varied from 0.0×102 to 1.2×102. Bacteria isolates from the samples includes Bacillus sp. (34.7%), followed by Enterococcus sp. (17.3%), Aspergillus sp. (21.7%) and Lactobacillus sp. (26.0%). Fungi isolates were identified as Penicillum sp. and Saccharomyces sp. The Standard Organization of Nigeria and NAFDAC should define more specifically the quality control standards of locally manufactured commercial juices, stating clearly the minimum and tolerable numbers and types of microorganisms.
2
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Production of Adhesive from Cassava Starch in Owerri, Imo State, Nigeria

100%
Chukwuemeka I. S., Ugochukwu I. W.
World News of Natural Sciences
|
2017
|
vol. 11
5-10
EN
In this work, the potentials of adhesives production from cassava starch were investigated. An adhesive product produced from Manihot utilissima was compared with a commercially available adhesive. Improvements in the properties of the cassava-based adhesive were achieved by investigating the effects of temperature and the addition of a viscosity enhancer/stabilizer (borax) on the density of the produced adhesive. The results obtained provide a wide range of insight into the production potentials of using cassava starch as a raw material in the production of large scale adhesives.
3
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Antibacterial properties of probiotics bacterial isolated from human breast milk

81%
Blessing E. N., Chukwuemeka I. S., Ukeachu C. D., Onuawuchi U. G.
World News of Natural Sciences
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2020
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vol. 29
|
issue 3
290-297
EN
This research work assessed the antibacterial properties of probiotic bacterial which was isolated from breast milk. The breast milk has a distinct amalgamation of minerals, proteins, lipids, carbohydrates and various vitamins that endorse the proper development, growth and immunity of the children. That’s the reason behind it’s consideration to be a comprehensive and inclusive food for new born babies. Furthermore, it is also abundant in various bioactive compounds which encourage the maturation of the immune system over and above develop body’s defense against infections. This research used a standard methodology to isolate the bacterial. In the midst of these bioactive agents, probiotic bacteria were properly isolated from human milk in this research work by means of selective MRS media. Five Lactobacillus spp. were isolated from every one of the three breast milk samples and two Enterococcus species, were observed as potential probiotics, and identified using morphological and biochemical tests which includes L. rhamnosus, L. plantarum, L. casei, L. fermentum, L. acidophilus, En. faecalis and En. faecium. The isolated bacteria were facultative anaerobic, catalase negative, gram positive and non-endospore forming. Sugar fermentation arrangements of equally isolated bacteria also significantly different. The adding up of breast milk probiotics to children formulas possibly will be an innovative substitute to mimic some of the purposeful consequences of human milk in children who are not breastfed.
4
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Application of Assessment Models for Health Risk and Pollution from Surface Water from Okumpi River in Nwangele, Imo State, Nigeria

81%
Chukwuemeka I. S., Obinna N. V., Chizoruo I. F.
World News of Natural Sciences
|
2021
|
vol. 38
20-36
EN
The mean and standard deviation of pH value in the present study during the wet and dry seasons varied from 6.21±0.22 - 5.75±0.41. The mean and standard deviation of EC in the current study ranges between 219.15±12.20 - 193.30±14.81 μS/cm for wet and dry seasons which are found to be in line with the WHO standard used. The mean and standard deviation of DO for this study during the wet and dry seasons were found to be 10.03±0.58 - 6.47±0.41 (mg/L). TDS for wet and dry seasons ranges from 374.79 ±5.33 - 121.65 ±6.33 mg/L. The nitrate [9.05 ±1.08 - 8.09 ±1.57], sulphate [3.91 ±0.51 – 3.73 ±0.46] and phosphate [82.78 ±3.86 - 81.76±3.32] in this present study for wet and dry season were all found to be below the standard. The Hazard quotient via ingestion and Hazard quotient via dermal has a reduction in the order of lead > nickel > iron > manganese > copper > zinc and lead > zinc > nickel > copper > iron > manganese > cadmium, in cooperation in children and adults in wet season, correspondingly. The Hazard quotient via ingestion and Hazard quotient via dermal has a decrease in the following order of nickel > lead > manganese > copper > iron > zinc and lead >zinc > nickel > copper > manganese > iron > for both children and adults in dry season, respectively. Lead possess carcinogenic risk for the inhabitants of this area due to the value of the carcinogenic risk n wet season of 4.05E-4 in adult and 1.55E-3 in children, in dry season of 2.57E-4 in adult and 9.88E-4 in children, against the standard set by the USEPA of 10-6 – 10-4. The surface water is not suitable for drinking as seen by the high water quality index of > 300. Lead possess carcinogenic risk for the inhabitants.
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