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All Journal EduMatika: Jurnal MIPA Indonesian Journal of Innovation Science and Knowledge Humanities Horizon Journal
Okongwu, Dozie John
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Agriculture, Biological Sciences & Forestry Humanities Chemistry Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Physics Social Sciences Other

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Phytochemical Analysis of Soursop Peel, With the Extraction and Characterization of its Oil Ezeiheukwu, Chika Mary; Okongwu, Dozie John
EduMatika: Jurnal MIPA Vol. 4 No. 4 (2024): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v4i3.740

Abstract

Soursop (Annona muricata) peels was analysed for its proximate composition. It was found to contain 3.2 % dark green oil, 10.65 % crude protein, 21.3% moisture, 3.8 % ash, 12.69 % crude fiber, 31.31 % carbohydrates and 4.40 % ash. The elemental composition of the peel was determined, using Atomic Absorption Spectroscopy. It was found to contain Calcium (32.45 mg/100 g), magnesium (48.23 mg/100 g), zinc (125.15 mg/100 g), phosphorus (128.24 mg/100 g), iron (72.52 mg/100 g) and manganese (3.82 mg/100 g). Extraction of oil from the peel was also carried out using sohxlet extraction method. Some chemical Characteristics of the oil was determined. The result showed that the oil have a saponification value of 131.84 mg, iodine value of 66.68 mg/100 g, free fatty acid value of 3.64 mg, and oleic acid value of 0.1889 mg.
Factors Affecting the Curriculum Implementation in Teaching of Chemistry in Senior Secondary School in Onitsha Education Zone in Anambra State Okongwu, Dozie John
Indonesian Journal of Innovation Science and Knowledge Vol. 2 No. 2 (2025): IJISK 2025
Publisher : Fakultas Pendidikan Ilmu Keguruan, Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/ijisk.v2i2.169

Abstract

The study investigated the factors affecting the curriculum implementation in teaching of chemistry in senior secondary school in Onitsha education zone in Anambra state. The study adopted the descriptive survey research design. Five research questions guided the study. The population of the study comprised all the 98 chemistry teachers in Onitsha Education Zone, Anambra State. A sample of 98 chemistry teachers was used for the study. The instrument for data collection was a structured questionnaire developed by the researchers which was titled ‘Questionnaire on factors affecting curriculum implementation in teaching of Chemistry (QFACITC). The instrument was validated by three experts and the reliability of the instrument was obtained using Cronbach Alpha reliability which gave a reliability index of 0.85. Data were collected were analyzed using mean and standard deviation to answer the research questions. The findings of the study revealed the following: that teachers perceive the effectiveness of the current chemistry curriculum effective in meeting educational objectives and student learning needs, the primary challenges faced by teachers in implementing the chemistry curriculum effectively in the senior secondary school, as found by the study include; inadequate laboratory equipment, insufficient textbooks and educational materials limit teaching effectiveness among others, cultural and societal factors influence the implementation of the chemistry curriculum, technology is effective in the delivery and enhancement of the chemistry curriculum implementation, adequate resource allocation, digital resources, clear policy guidelines, real-world applications, periodic curriculum review are strategies that can be implemented to overcome the challenges affecting effective curriculum implementation in chemistry education in secondary schools. Based on the findings of the study, the following recommendation were made: provision of laboratory facilities should be by a combined effort of the government, Parent Teachers’ Association and other education stakeholders; Chemistry teachers and students should improvise instructional materials especially those that involve the use of local materials; philanthropists should invest in the education needs of their community especially in the area of instructional material provision as well as fund assistance; Chemistry teachers should be involved in decision-making and the planning of the Chemistry curriculum.
Evaluating quality of water bodies in rural communities in the Southeastern Nigeria and Implications to health of the citizen Onwudinjo, Felicity Uju; Okongwu, Dozie John
Humanities Horizon Vol. 3 No. 1 (2026)
Publisher : PT. Pena Produktif Kreatif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63373/3047-8014/50

Abstract

Access to safe drinking water remains a major public health challenge in rural communities of South-Eastern Nigeria. This study evaluated the quality of water bodies in selected rural areas of Ebonyi, Anambra, and Abia States, assessing contaminant types, concentrations, and potential health implications for residents. A cross-sectional, seasonal field-based approach was adopted, with ninety water samples collected from nine springs during both the dry and rainy seasons. Physicochemical, microbial, and heavy metal parameters including pH, turbidity, total dissolved solids, iron, lead, total coliform, and Escherichia coli were analyzed using standard APHA methods. Statistical analyses, including multiple regression, principal component analysis, and cluster analysis, revealed that microbial contamination (total coliform and E. coli) and physical-chemical factors (turbidity, iron, total dissolved solids) were the dominant contributors to water quality degradation. Significant correlations indicated that lower pH and elevated turbidity and total coliform levels exacerbate contamination, while cluster analysis highlighted spatial heterogeneity and high-risk locations requiring urgent intervention. The findings underscore the serious health risks posed by drinking water in these communities and point to the need for effective monitoring, pollution mitigation, and community-based water treatment strategies to reduce disease burden.
Co-Authors Ezeiheukwu, Chika Mary Onwudinjo, Felicity Uju