Research Papers/Topics in Food Science and Nutrition

Process Development and Product Characterization of a Fermented Rice-Based Baby Food

ABSTRACT Oryza glaberrima is a local rice variety that is native to West Africa. Its tough texture androbustness produces milled rice with a large quantity of broken grains when dehusked (polished) accounting for the huge gap in quality. Consequently, imported rice is much more consumed inGhana than locally cultivated and milled rice. The objective of this study was to add value tolocal rice by developing and characterizing a rice-based baby food from low grade locally milledand parboiled ric...

Extraction And Assessment Of Pectin From Pumpkin Peels

ABSTRACTPectin is defined as complex mixtures of polysaccharides that make up approximately one third of the cell-wall dry substance of most types plants. This study was carried out to extract pectin from fully ripen pumpkin (Cucurbita spp.) using two different methods;soxhlet acid extraction method and acid extraction method. And to study the influence of using different acids on the yield of pectin; nitric and citric acids were used. Moreover, to examine the effect ...

Effect Of Black Cumin (Nigella Sativa L.) Seeds Oil On The Stability Of Peanut Oil During Frying Process

ABSTRACTThis study was conducted to evaluate the effect of black cumin (Nigella sativa L.) seeds oil (BCSO) on crude and refined peanut oil stability during frying periods. Crude and refined peanut oil was blended with 5%, 10% and 15% BCSO and commercial antioxidant (CA). The blends were used to fry potato chips for up to 60 min.Black cumin seeds collected from the local market, were analyzed for protein, moisture, fats, fibers and carbohydrates contents then physical properties (colour...

Extraction of Natural Flavours from Mint and Orange Peel and Their Use as Flavouring Agents for Biscuit.

The main goal of this study is to extract natural flavour from mint and orange peels by distillation production in sudan and its utilization in improving the biscuit product flavour. The flavours were extracted by steam and water distillation. It was conducted to determine the physico chemical propereties of flavour and it’ s effect on different added levels (1,2,and 3 ml) on the sensory evaluation of the final product. The proximate analysis for both fla...

Effect Of Maize Storage And Milling Practices On Aflatoxin Levels In Maize Flour

ABSTRACT The presence of aflatoxins in foods and feeds is respectively a health hazard to human and animals. Cereals, especially maize have been reported to be susceptible to aflatoxin contamination. This study was carried out to investigate aflatoxin levels in maize flour as influenced by maize storage and milling practices in Gairo district, Morogoro region. Quantification was preceded by a purposive cross-sectional survey focusing on storage and milling practices. Based on the survey...

Safety And Quality Of Commercial Cereal-Based Complementary Foods Produced And Marketed In Mwanza Region

EXTENDED ABSTRACT Commercial cereal-based complementary foods (CBCF) for infant porridge are increasingly produced and sold in developing countries including Tanzania. A crosssectional study was conducted to determine the safety and quality of commercial cerealbased complementary foods produced and marketed in Mwanza region. Twenty differently formulated cereal-based complementary food products (CBCFs) from 20 processors were purchased from supermarkets and retail shops in Mwanza region. ...

Development Of Extruded Instant Mixed Mushroom Soup

EXTENDED ABSTRACT A study was conducted to develop extruded instant mixed mushroom soup supplemented with banana, soybean and orange fleshed sweet potatoes. The nutritional qualities, physical properties, sensory acceptability and the shelf life of the developed product were evaluated. Proximate compositions were determined to evaluate the potential of the product to supply energy and required nutrients. Moisture, ash, protein, fiber, ether extract, carbohydrate and energy content range...

Pesticides Application Practices And Residues In Sprayed Tomatoes And Their Safety To Consumers

ABSTRACT Pesticides have been used intensively in tomato growing activities for pests and fungal control. However, health concerns have been reported as a result of pesticides use. This study was conducted to assess pesticides application practices and residues levels in harvested tomatoes grown in Kilolo District. Seventy-one farmers (about 12%) were interviewed using structured interview schedules and 40 (about 6.8%) tomato samples were taken from 40 farmers for laboratory analysi...

Effect Of Extrusion Processing On The Nutritional Value And Tannin Content Of Sorghum – Soybean Composite Supplementary Product

ABSTRACT The study was designed to formulate sorghum-soybean composite supplementary foods and investigate the effect of extrusion on nutritional value and tannin content. The products were extruded and analysed for nutritional value, tannin content, urease activity, sensory and anti-oxidant activity. Results showed that, the extruded composite products had good nutritional value and conformed to the requirements for supplementary foods for older infants and young children. Nutritional ...

Safety and quality of organically grown cloves (syzigium aromaticum) and black pepper (piper nigrum l.) In tawa ward, Morogoro-Tanzania

ABSTRACT Participatory Action Research approach was used in this study involving organic spice farmers from Tawa Ward within Morogoro region, researchers from Sokoine University of Agriculture and Sustainable Agriculture Tanzania organization. Harvesting and postharvest handling practices by clove and black pepper organic farmers in Tawa Ward were assessed. Five villages were visited, 107 organic farmers were interviewed, 34 among them inspected and provided samples for analysis. Fun...

Persistent Organic Pollutants In Water, Sediments And Fish From Lake Victoria And Implications To Human Health Risks

EXTENDED ABSTRACTLake Victoria is an important freshwater resource in Tanzania and its neighbouringcountries namely Uganda, Kenya, Rwanda, Burundi and the Democratic Republic of Congo(DRC). Millions of people dotted around the lake depend on it as a major source of household and industrial water supply, irrigation, transport and provide for fishing as the main source of animal-derived protein as well as income. In Tanzania, the lake provides employment opportunities to more tha...

Study Of Suitability Of Cassava And Cowpea Flours For Making Bread

ABSTRACT This study was done in Tanzania and Mozambique to assess the effect of cassava and cowpea flours singly and in combination in bread making and the degree of acceptability of the bread. Five to 20% cassava and 5 to 30% cowpea were used as wheat flour diluents. As the number of diluents increased, the loaf volume decreased. The bread size ranged from 560 ml for 30% cowpea bread to 890 ml for 100% wheat bread and from 420 to 620 ml for the pan bread, the highest value being for wh...

Effectiveness Of Selected Food Storage Technologies In Reduction Of Post-Harvest Losses Of Beans In Selected Households Of Kilosa District, Tanzania

ABSTRACT Cereal grain losses are high in sub-Saharan Africa countries, Tanzania inclusive. Information on protection of these losses is mainly reported for maize and other cereals but it is limited on bean, particularly for Kilosa district. This study was carried in Kilosa district, where by two wards (Malolo and Lumuma) were used to establish effective storage technology for bean storage and measure the level of understanding on postharvest management. To measure effectiveness storage t...

The Effect Of Crude Betalains From Beet Root On ( In - Vitro ) Hypochlorous Acid Induced Low Density Lipoprotein Oxidation

ABSTRACTStudies have shown a decreased risk of atherosclerosis linked to the intake of fruits and vegetables rich in bioactive phytonutrients. This study investigated the effect of crude beet root betalains on low density lipoprotein (LDL) oxidation induced by hypochlorous acid (HOCl). Crude betalains antioxidant potential was determined by use of 2, 2 – diphenyl - 1 – picrylhyrayl radical (DPPH assay) and was compared to lycopene and ascorbic acid. HOCl oxidizing ability and betalains an...

Safety Of Selected Vegetables Grown In Urban Areas; Case Of Heavy Metals In Dar Es Salaam City

ABSTRACT A study was carried out to assess the safety of selected vegetables grown in urban areas, focusing on a case of heavy metals in Dar es salaam, Tanzania. The study investigated the concentration of three heavy metals, namely Lead (Pb), Cadmium (Cd) and Copper (Cu) in the edible portions of selected leafy vegetables, and the effect of blanching on the possible reduction of heavy metals concentration. The study also compared the levels of metal in selected matured leafy vegetables...


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