EXTENDED ABSTRACT The natural occurrence of aflatoxins and fumonisins in maize and beans at harvest, during storage and along the value chain, including processed, feed and marketed products in three villages of Long, Sabilo and Seloto in Babati District, Manyara region, Tanzania, was investigated in the year 2013/14. The villages were chosen as they represents three different climatic zone. Total aflatoxins and fumonisins contamination in 440 at harvest maize samples had levels up to 26.2 �...
ABSTRACT Compliance by street fruit salad and juice vendors with national food safety and quality requirements was evaluated. Evaluation was based on good manufacturing practices (GMP), good hygienic practices (GHP), selected heavy metals, physicochemical properties and microbiological quality parameters. Compliance by street vendors was also compared to vendors in university cafeterias and town restaurants. Among the fruit salad and fruit juice vendors, 71.4% and 54.3%, respectively, had no ...
ABSTRACT Post-harvest management during handling and storage of maize are crucial for ensuring food security. This study was carried out to assess farmers handling practices and effectiveness of different post-harvest technologies of maize in Kilosa district. A household survey on farmers handling practices and post-harvest technologies used by the farmers to store maize was conducted in Mabwerebwere and Ulaya wards of Kilosa district. The study recorded farmers habits on maize handling pract...
ABSTRACT The aim of this study was to assess compliance of cassava flour processed by Small and Medium Enterprises (SMEs) from Mwanza, Tanga and Coast regions. Flour samples were collected randomly from 22 SMEs in the mentioned Regions. Processing technologies as well as factors that influenced product standardization based on Good Manufacturing Practices (GMP), Good Hygienic Practices (GHP) and storage practices were assessed using pretested structured questionnaire. Chemical composition (...
EXTENDED ABSTRACT Tanzania has experienced an increase in the consumption of bottled water as a result of the population building trust that it is safer than tap water. It is the interest of public to consume water of high quality both microbiologically and chemically. Due to the fact that bottled water is produced from different geographical regions, it is expected to have different qualities in microbial flora loading, essential elements and heavy metals. The aim of this study was to asses...
ABSTRACT This study aimed at producing and characterizing of jackfruit (Artocarpus heterophyllus) jam, by extracting pulps from jackfruits obtained from Morogoro market. Produced pulp was mixed with prepared lemon juice and sugar and allowed to cook on constant boiling/stirring until ready for set at 69% brix. Seventy untrained panelists performed sensory and general acceptability test using 7 point hedonic scale of the developed jam together with commercial mango jam as control. The result...
ABSTRACT A survey was conducted at Mkuranga and Rufiji districts in the Coastal Region of Tanzania. A total of 10 samples comprised of two from each of 5 varieties were subjected to three preparation methods (pounded cassava leaves as preparation method 1, boiled pounded leaves for 30 minutes as preparation method 2, and pounded leaves in hot water then boiled for 30 minutes as preparation method 3). These samples were analyzed for proximate components, β-carotene, vitamin C and cyanide con...
ABSTRACT Cassava is an important staple crop and its starch is an important source of biomaterial for food and non-food industries. Processing of cassava is very important due to its rapid postharvest deterioration and cyanide content, but it can also add value and provides employment opportunities. There is a correlation between cyanogenic poison and poverty in communities where cassava is a staple food. Therefore development of starches occupies a central position in the quest for cassava c...
ABSTRACT The objectives of this work were to study the quality and acceptability of new rice varieties (Oryza sativa L.). The rice varieties (TXD88, NERICA4, NERICA1, TXD85 and TXD306) were analyzed for rough rice quality indices, proximate composition, milling quality, cooking time, physicochemical properties and sensory evaluation. The rough rice quality indices were 5.96 – 14.62% (immature grains); 30.91 – 36.78g (1000 grains’ weight); 7.81 – 9.05mm (length) and 3.14 – 3.65 (leng...
ABSTRACT Five varieties of white sorghum consumed in Tanzania namely, Pato, Hakika, Tegemeo, Macia and Wahi, non-complemeted and complemented with pigeon peas at ratios 75:25 and 70:30 were extruded to produce instant porridge flour. The physical, nutritional, and sensory quality of the flour was evaluated. The physical quality parameters were: bulk density 0.5-0.7 gcm-3, viscosity 0.5-0.8dpas, water absorption index 0.04-0.6 g/g, water solubility index 24.1-41.2%; the nutritional composition...
ABSTRACT The aim of this study was to assess the levels of pesticide residues in locally produced grape wine in Tanzania. Fifty samples of grape wine from different locations in Dodoma urban and Bahi district were analysed to determine the presence of 49 pesticides using the quick, easy, cheap, effective, rugged and safe (QuEChERS) multi-residue extraction, followed by gas chromatography-tandem mass spectrometry (GC-MS/MS). Twenty-two pesticides were detected among the 49 pesticides analysed....
ABSTRACT Tetracyclines (TCs) are used in poultry production for prevention and treatment of diseases. The misuse of this drug or poor observance of drugs withdrawal period, may result into unacceptable residue levels in poultry products. Presence of tetracycline residues, just like other antimicrobial drugs, in poultry products, such as, eggs is a concern to the public health. In order to determine tetracycline residues, a total of 291 eggs randomly collected, 3 eggs from 97 layer chicken far...
ABSTRACT This study was conducted to assess compliance to fortification of sunflower oil and palm olein with retinyl palmitate. Fortified sunflower oil and palm olein samples were collected from large scale edible oil manufacturers and at selling outlets in Dar es Salaam region. Mean retinyl palmitate levels in fortified sunflower oil samples from manufacturer A collected at production site and at selling outlets was 12.42 and 10.19 mg/kg, respectively. In fortified palm olein samples levels ...
ABSTRACT Small and Medium Scale Enterprises (SMEs) processing fruits play an important role in the national economic development of Rwanda. Although these SMEs have received assistance from the government, they still face many constraints that hinder their development. For example, their access to both local and export markets is limited due to poor quality of their products. A study was conducted using a cross-sectional study design, to assess the compliance of the food SMEs with national an...
ABSTRACT Information on the nutritional content and health-promoting properties of African indigenous fruits is very limited. Although the limited available literature does point towards wealth in essential nutrients, micronutrients and antioxidants there is still a need to fill the gap to ascertain health and nutritional claims that have been passed on from previous generations. Studies on the impact of processing of the fruit pulp on physicochemical, nutritional properties, and digestibilit...