negussie bussa

Haramaya university, Food science and post harvest technology, Faculty Member

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Effect of grain teff, finger millet and peanut blending ratio and processing condition on weaning food quality

Cogent Food & Agriculture, 2019

as soon as possible after acceptance. Copyediting, typesetting, and review of the resulting proof... more

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Isolation and Characterization of Amylase Enzyme from Selected Fungal Strains of Wof Washa Forest of North Shoa, Ethiopia?

this regard, industries that utilize starch and other agricultural raw materials to provide quali... more

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Traditional medicinal plants used to treat cancer, tumors and inflammatory ailments in Harari Region, Eastern Ethiopia

South African Journal of Botany, May 1, 2019

Global health reports indicated that cancer and inflammatory ailments are increasing and the high... more Global health reports indicated that cancer and inflammatory ailments are increasing and the highest cause of mortality. These health problems are alarmingly increasing and becoming the national health concern of Ethiopia. It is well recognized that the use of medicinal plants in the treatments of diseases, including cancer and inflammation, are common in traditional medicine. Therefore, this study explored age-old traditional practices of using medicinal plants used to treat cancer locally called gofla, tumor local called keledo, and inflammatory ailments by Harari and Oromo communities. Semi-structured interviews, discussions and guided field walks constituted the data collection methods from 72 (52 male and 20 female) systematically selected informants including 12 traditional herbalists (key informants). Informant Consensus Factor (ICF), Relative Frequency of Citation (RFC), Fidelity Level (FL), Relative Importance Index (RI), Cultural Importance Index (CII), and binomial test were employed in data analysis. Thirty-nine traditional medicinal plant species in 38 genera and 29 families were used for cancer, tumor, and body inflammations treatments. Remedial preparations added to 50 formulations for the treatment of 17 different ailments listed under the three major categories. Preparation of paste from fresh parts accounts for 20% followed by concoctions of respective parts for internal application (18%) and crushed fresh parts for topical application (16%). There was no significant difference in ICF values of the three categories (p N .05), i.e. tumor (0.91), inflammations (0.89), and cancer (0.88). RFC values ranged from 0.79 to 0.06 and FL from 46.67 to 66.67%. The highest RFC was recorded for Cyphostemma adenocaule (0.79), followed by Hydnora abyssinica (0.75), Zanthoxylum usambarense (0.73), and Plumbago zeylanica (0.68). The study area harbored valuable traditional medicinal plant species used for the treatment of cancers, tumors, and inflammations and reputable indigenous knowledge, which attracted the phytochemical and pharmacological analyses as well as the conservation of species and associated ethnomedicinal knowledge.

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Relationship between Physical Fitness and Academic Achievement: The Case of Model School Students at Haramaya University, Ethiopia

The main objective of this study was to investigate the relationship between physical fitness and... more The main objective of this study was to investigate the relationship between physical fitness and academic achievement among Model School students of Haramaya University. For this purpose Grade six students' physical fitness levels were compared to their academic achievement based on the idea that health related physical fitness had an impact on the ability to achieve academically. The pre and post tests on selected health related physical fitness parameters were administered for two groups (experimental group and control group). For academic achievement the first semester GPAs (grade point average) was taken as pre test and Second Semester GPAs was taken as post test for both groups. The GPAs of the groups was determined by calculating an average of all subjects. Data was collected from 20 students (10 boys and 10 girls) grade six sections A and B with aged 11-13 years old, during the 2012-2013 school year by using the health related Physical Fitness Tests and (GPA's). The training schedules were for twelve weeks for physical fitness exercises and it was arranged between the first semester final exam and Second Semester final-Exam. The intensity for exercises were low to moderate, for three days per week (Monday, Wednesday and Saturday) after their regular classes for experimental group. Data was analyzed using computerized statistical package software (SPSS) T-test and correlation was used to analyze the data. The physical fitness and academic results showed that experimental group's was greatly improved from first to second semester. But control group's decreased the mean value of GAPs from first to second semester. As exhibited in the results the correlation coefficient of experimental group on muscular strength, and flexibility showed moderate significant positive correlation with academic performance. On the other hand body composition had moderate significant negative correlation. With the exception of the cardiovascular endurance and muscular endurance results showed very high significant positive correlations with academic performance among the experimental group. This study proved that there is a significant relationship between physical fitness and academic achievement.

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Physicochemical and nutritional properties of khat (Catha edulis forsk) substituted orange (Citrus sinensis) and mango (Mangifera indica) juices

International Journal of Food Sciences and Nutrition, 2020

Effect of grain tef [Eragrostis tef(Zucc.) Trotter] flour substitution with flaxseed on quality and functionality ofinjera

International Journal of Food Science and Technology, Oct 1, 2012

SummaryInjera from tef substituted with two flaxseed forms at 3%, 6% and 9% and control injera sh... more SummaryInjera from tef substituted with two flaxseed forms at 3%, 6% and 9% and control injera showed substitution had a significant effect on injera proximate, energy, titratable acidity (TA), total phenolics (TP) contents and sensory acceptability. Flaxseed forms had influence on moisture, fibre, total carbohydrate (TC) and TA. With 9% flour and whole flaxseed substitution, percentage energy, moisture, ash, crude protein, fibre and TA increase were 3.5, 27.3, 25.9, 20.4, 114.3 and 10.1, respectively. TC and pH were high for control. In all injera samples, condensed tannins and free fatty acid were insignificant. With an increase in the flaxseed substitution, most sensory acceptance increased, whereas injera eyes and colour decreased and appeared superior for control (100% tef injera). The 9% flaxseed‐substituted injera showed good proximate nutritional and energy contents of functional potential of high in dietary fibre, alpha linolenic acid, lignans, proteins and TP of anti‐oxidant nature.

Effect of Grain Tef (Eragrostis tef (Zucc.) Trotter) Flour Substitutions with Flaxseed on Mineral Content, Antioxidant Activity, Phytic Acid Content and Microbial Quality of Injera

Science, Technology and Arts Research Journal, Dec 16, 2013

Article Information There is an increased global interest in the food industry to develop and mar... more Article Information There is an increased global interest in the food industry to develop and market functional foods in which scientific investigations are limited in Ethiopia. Tef injera functional character can be further enhanced by substitution with flaxseed which is known to bear functional ingredients (α-linolenic acid an ω-3 fatty acid, secoisolariciresinol diglycoside lignans, dietary fibre and proteins). Two flaxseed forms (whole and flour) and three flaxseed substitution levels (3%, 6% and 9% flaxseed) arranged in a factorial experimental design in three replications were cofermented to find out whole or flour and at what substitution level injera with better nutrient and functional potential can be processed. Tef injera (100%) was used as a control. Tef injera substituted with flaxseed (whole and flour) at 3%, 6% and 9% showed a significant (P<0.05) effect on minerals (except P), ferric ion reducing antioxidant power (FRAP), phytic acid and microbial quality of injera. With 9% flaxseed substitution FRAP, Zn and Ca contents percentage increase were: 102, 110 and 16; whereas phytic acid and Fe decreased by 76 and 19, respectively from the control. Between 2 to 6 injera storage days, yeast-mould (2.27 to 3.93 log cfug-1) and total aerobic plate counts (ND to 3.77 log cfug-1) were lowest for 9% flaxseed substitution and highest for the control injera (2.85 to 4.08 log cfug-1 and 3.70 to 4.30 log cfug-1 , respectively). Coliforms were not detected. Whole flaxseed substituted injera had high minerals, antioxidant and microbial stability than flour flaxseed substituted injera. Injera with high minerals (except iron) and antioxidant of improved microbial stability, low phytic acid contents can be processed by 9% flaxseed substitution.

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Evaluation of physicochemical properties and sensory attributes of leavened bread produced from composite flours of wheat (Triticum aestivum L.) and sweet potato (Ipomoea batatas L.)

Science, Technology and Arts Research Journal, Apr 23, 2018

Article Information This study was initiated with the objective of investigating the use of impro... more Article Information This study was initiated with the objective of investigating the use of improved sweet potato variety namely, Adu for bread production by combining with wheat flour. The experiment was carried out in a completely Randomized Design with three replications. The sweet potato variety was evaluated in five blending ratios of 0%, 5%, 10%, 15%, 20% and 25%. The breads of the composite flours of wheat and sweet potato resulted in significant reduction in crude protein, crude fat and energy contents whereas the ash, crude fiber, and carbohydrate contents were increased significantly. High vitamin A contents was found in breads with 25% sweet potato flours. Sensory acceptability evaluation based on color, appearance, flavor, texture, and taste showed no significant (P˃0.05) difference between breads having 0 and 5% sweet potato. The sensory acceptability scores of breads remained within the liking range, i.e 6 and above in scale of 9 for sweet potato variety. Adu sweet potato flour therefore could be added to wheat flour up to 25% to produce breads of acceptable sensory quality and enhanced nutrition.

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Comparative Assessment of Traditional Medicine Utilizations in Three Adjacent Districts of East Hararghe, Ethiopia

Journal of Ayurvedic and Herbal Medicine, 2021

Traditional medicine (TM) is the earliest culturally-based alternative medicine extensively pract... more Traditional medicine (TM) is the earliest culturally-based alternative medicine extensively practised as a primary health care system in developing countries. The current study was designed to make the comparative assessment of TM utilization from three adjacent districts of east Hararghe, Ethiopia using a community-based cross sectional study. Study participants were selected using the systematic random sampling technique method until the required sample size was reached in each district. The majority of the respondents from the three districts were rural households, Muslims, 31 to 40 years old, illiterate, male-headed with seven or more family-sized households and had less than 1000 birr monthly income. The most frequently used homegrown TM remedies were Allium sativum (69.17%, 67.13%, and 68.42%), Capsicum spp (67.14%, 68.43%, and 69.33%), Guizotia arborescens (61.52%, 63.19%, and 59.17%) and Ocimum lamiifolium (59.11%, 61.13%, and 60.19%) in Haramaya, Meta and Kombolcha district...

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Effect of Processing Methods on Nutritional and Anti-nutritional Value of Amaranth Grain; and Potential Future Application of Amaranth Grain in Injera Making

International Journal of Fermented Foods, 2018

Despite of its multiple values, cultivation of grain amaranth has not received much attention. Pr... more Despite of its multiple values, cultivation of grain amaranth has not received much attention. Processing and utilization of the grain in Ethiopia is currently low. This research was initiated to study the effect of processing methods (soaking and roasting) on nutritional and anti-nutritional value of amaranth grain; and potential future application of amaranth grain in injera making. The experiment was laid out as a randomized complete design and replicated three times per treatment. The outcome of the study revealed that as the amaranth grain has good nutritional qualities and concurrently less amount of tannin and phytic acid. The crude fat, ash, fiber and protein contents of raw amaranth was 7.33%, 2.97%, 3.67 % and 13.07% respectively. The results revealed that, processing methods had significantly affected the nutritional qualities. The proximate compositions, minerals and anti-nutrients of the soaked amaranth was slightly lower than the roasted. In this study, roasting reduced crude protein content 3.44% and iron by 1.84mg/100g. Furthermore, soaking significantly reduces the anti-nutrients than roasting though it had effect on some nutritional qualities. Soaking reduced the phytates and tannin contents by 29.67mg/100g (11.85%) and 3.39mg/100g (49.62%) respectively. The injera griddled from amaranths grain had good colour, high number and evenly distributed of eyes and non-sticky and soft texture which makes it promising to replace teff for injera making.

Magnetic coffee residue biosorbent for selective extraction of zinc oxide nanoparticles in water samples

Bulletin of the Chemical Society of Ethiopia

ABSTRACT. Quantification of engineered nanomaterials in the environment has attracted researchers... more ABSTRACT. Quantification of engineered nanomaterials in the environment has attracted researchers’ interest recently because of their increased release to the environment. In this study, a recyclable and easily accessible magnetized coffee residue (MCR) is proposed for magnetic solid-phase extraction (MSPE) of zinc oxide nanoparticles (ZnO-NPs) from water samples. The MCR was synthesized using a simple one-step chemical co-precipitation method from coffee residue and was characterized by state-of-the-art techniques. Various parameters affecting the MSPE efficiency of ZnO-NPs were optimized and 8.5 pH, 75 mg adsorbent, 120 min extraction time, 10 mL sample volume, 4 mL of 0.001 M HCl as an eluting solvent, and 30 min elution time were identified as the optimum conditions. Under these conditions, the method showed excellent linearity (R2 = 0.995) and good sensitivity (detection limit, 0.12 mg L-1, and quantification limit, 0.4 mg L-1). Intra and inter-day percent standard deviations w...

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Conclusions: The study documented many well known and effective medicinal species of relevance for human JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE

Full list of author information is available at the end of the articlehealthcare, including for t... more Full list of author information is available at the end of the articlehealthcare, including for the treatment of malaria which is rampant in the area as it is in many parts of Ethiopia. This underscores the importance of the traditional medicinal plants for the people living in the area and the potential of the resource for development. Consequently, the study area deserves urgent conservation priority coupled with mechanisms for the protection of the associated indigenous medical lore as well as development and effective use of the medicinal plant resource.

The Relationship Between Physical Fitness and Academic Achievement

Journal of Physical Education, Recreation & Dance, 2010

Effect of Physical Exercise on Physiological Changes and Performances of First Year Students at Haramaya University

East African Journal of Sciences, Jun 1, 2016

Physical exercise is important for maintaining physical fitness and contributes positively to mai... more Physical exercise is important for maintaining physical fitness and contributes positively to maintaining a healthy weight, promoting physiological well-being, and strengthening the immune system. It is a fact that many life threatening conditions can be prevented by regular exercise. This research attempted to investigate the effects of intensified physical training on physiological changes and performance efficiencies on Haramaya University first year sport science students. An informal design (i.e. before and after without control) was applied. Twenty participants were selected from first year sport science department. Ten male and ten female students participated in different physical training programs of varying intensities for 3 consecutive months, i.e. 3 days per week and 60 minutes duration per day. Pre and post training performances and laboratory tests were conducted and analyzed for performance efficiency levels and major physiological changes. Findings of this study revealed a significant effect of physical exercise on cardio vascular endurance, muscular endurance, muscular strength, flexibility and body composition as well as some physiological changes. Based on the findings, it was concluded that intensified physical training had a positive effect on performance and physiological changes of the subjects.

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Physicochemical and nutritional properties of spray-dried pitaya fruit powder as natural colorant

Food Science and Biotechnology, 2012

Pitaya commonly known as dragon fruit is very popular of its intense color, constituent minerals,... more Pitaya commonly known as dragon fruit is very popular of its intense color, constituent minerals, vitamins, and antioxidant properties. In this study, physiochemical properties of whole pitaya fruit powder as influenced by 2 different maltodextrin concentrations (20 and 30%) and 4 different inlet temperatures (145, 155, 165, and 175 o C) were carried out. As inlet temperature increased moisture content and water activity decreased and this change was apparent at high concentration of maltodextrin. The best spray drying condition in relation to betacyanin content was 155 o C inlet temperature and 20% maltodextrin concentration. Concerning the flowability, all factors and their levels resulted in poor flowing powder. From nutritional point of view, pitaya fruit powder was found rich in protein, fat, ash, fiber, and antioxidant. This study indicated that the pitaya fruit powder produced from whole pitaya fruit has potential to use as natural coloring agent and a health supplement.

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Short Communication Effect of Physical Exercise on Physiological Changes and Performances of First Year Students at Haramaya University

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Effect of Physical Activities in Lowering Blood Pressure in Hypertensive Patients: The Case of Haramaya

Abstract- Background: A variety of lifestyle modifications including weight loss in the overweigh... more Abstract- Background: A variety of lifestyle modifications including weight loss in the overweight and regular aerobic physical activities have been shown in clinical trials to lower blood pressure in hypertensive patients. This study aims to investigate the effect of physical activities in lowering blood pressure in hypertensive patients subjected to consecutive physical activities training sessions. Method: A sample of 12 female hypertensive patients diagnosed with hypertension for more than one year were purposively selected from those hypertensive patients visited the primary care center for their regular follow up. A laboratory experiment was conducted in April, 2012 at Haramaya University Health Center. Patients whose systolic blood pressure reading < 180 mmHg, and diastolic blood pressure reading < 110 mmHg and heart rate reading <100 b/m were included in the study. Hematological and

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The effect of selected intensity aerobics physical training program on the reduction of body weight among participants of Addis Ababa Arat kilo fitness center

The general objective of this study was to investigate the effect of selected intensity aerobics ... more The general objective of this study was to investigate the effect of selected intensity aerobics physical training program on the reduction of body weight among participants of Arat kilo Fitness Center. Twenty overweight subjects whose BMI was 25 - 29.9 kg/m2 and age in between 25–35 years participated in this study. Ten subjects (5 male and 5 female) participated in moderate intensity aerobics physical training program and ten subjects (5 male and 5 female) participated in high intensity aerobics physical training program for three consecutive months three days per week 60 minutes and 45 minutes per day for both moderate and high intensity groups, respectively. PT, DT and POT tests were taken and analyzed accordingly. The training program consisted of moderate intensity (∼ 60–65% of HRmax) including warming up, light stretching, brisk walking, running, cycling, and aerobics dance, whereas for High intensity (∼80–85% of HRmax) the program include warming up, light stretching, runnin...

Effect of grain tef [Eragrostis tef(Zucc.) Trotter] flour substitution with flaxseed on quality and functionality ofinjera

International Journal of Food Science & Technology, 2012

There is an increased global interest in the food industry to develop and market functional foods... more There is an increased global interest in the food industry to develop and market functional foods in which scientific investigations are limited in Ethiopia. Tef injera functional character can be further enhanced by substitution with flaxseed which is known to bear functional ingredients (α-linolenic acid an ω-3 fatty acid, secoisolariciresinol diglycoside lignans, dietary fibre and proteins). Two flaxseed forms (whole and flour) and three flaxseed substitution levels (3%, 6% and 9% flaxseed) arranged in a factorial experimental design in three replications were cofermented to find out whole or flour and at what substitution level injera with better nutrient and functional potential can be processed. Tef injera (100%) was used as a control. Tef injera substituted with flaxseed (whole and flour) at 3%, 6% and 9% showed a significant (P<0.05) effect on minerals (except P), ferric ion reducing antioxidant power (FRAP), phytic acid and microbial quality of injera. With 9% flaxseed substitution FRAP, Zn and Ca contents percentage increase were: 102, 110 and 16; whereas phytic acid and Fe decreased by 76 and 19, respectively from the control. Between 2 to 6 injera storage days, yeast-mould (2.27 to 3.93 log cfug -1 ) and total aerobic plate counts (ND to 3.77 log cfug -1 ) were lowest for 9% flaxseed substitution and highest for the control injera (2.85 to 4.08 log cfug -1 and 3.70 to 4.30 log cfug -1 , respectively). Coliforms were not detected. Whole flaxseed substituted injera had high minerals, antioxidant and microbial stability than flour flaxseed substituted injera. Injera with high minerals (except iron) and antioxidant of improved microbial stability, low phytic acid contents can be processed by 9% flaxseed substitution.

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Physicochemical Quality of Ethiopian Plantation White Sugar from Three Sugar Factories

Quality differences among the three Ethiopian plantation white sugars from Metahara, Finchaa and ... more Quality differences among the three Ethiopian plantation white sugars from Metahara, Finchaa and Wonji sugar factories and refined sugar (control) in reference to the carbonated soft drink industry requirements were evaluated. Degree of pol ( o Z), sucrose (%), color (IU), turbidity (IU), pH, reducing sugar (%) and SO2 (mg/kg) for the three sugar samples were: 99.73-99.79, 99.73-99.79, 210-271, 181210, 6.59-6.82, 0.032-0.083 and 10.60-13.11, respectively, and for the control sugar sample were: 99.94, 99.94, 36, 10, 7.21, 0.076 and 0.00, respectively. Conductivity ash (%), moisture (%), dextran (mg/kg), insoluble matter (mg/kg), particle size (mm), iron (mg/kg), copper (mg/kg) and lead (mg/kg) contents were: 0.012- 0.018, 0.010-0.023, 72-78, 82.67-118.67, 0.90-1.02, 0.97-1.56, 0.26-0.42 and 0.11-0.30, respectively and for the control sugar sample were: 0.003, 0.013, 74.67, 4.67, 0.65, 0.21, 0.13 and 0.11, respectively. The three plantation white sugars have certain quality differenc...

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