Browsing by Author "Mongi, R"

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Development and sensory evaluation of yoghurt flavoured with solar dried fruits
(Pearl Research Journals, 2017) Ndabikunze, B. K.; Mumba, F. G.; Ngowi, H.; Chove, L; Mongi, R; Abdulsud, I.
A study of developing solar dried fruit (5%) flavoured yoghurts using three types of fruits was conducted to determine acceptability and shelf life of developed products. A total of six samples namely banana, mango, pineapple, banana/mango, banana/pineapple and mango/pineapple were used as flavours in yoghurts. They were added either as fruit pieces or as powders. Shelf life projection study suggested that developed yoghurt products could be stored for up to 21 days at 4 °C without undergoing spoilage. Plain yoghourt (control) was the most liked sample and scored highest mean values for all attributes, which was significantly different from all other samples (p<0.05). Among the fruit flavoured yoghourts, mango was the most preferred sample in terms of flavor, aroma and general acceptability whereas the pineapple was the least acceptable. Although yoghurts flavoured with fruits pieces scored higher mean values in all sensory attributes than yoghurts flavoured with powdered fruits, no significant differences (p>0.05) between the two forms of fruit flavours was found. This needs to be further investigated. Thus, although the control was the most liked sample, solar dried fruit can be successfully used as yoghurt flavour, which may improve the texture and nutritional quality of the formulated yoghurts, making them available throughout the year, hence increasing farmer’s income.
Sensory properties and consumer acceptability of nutrient dense porridge from locally available foods for infants in Tanzania
(2016) Marcel, M.; Turyashemererwa, F; Mukisa, I; Mongi, R
Childhood under nutrition during the first two years of life has been associated with irreversible harm and is linked to higher rates of morbidity, mortality, impaired cognitive ability and poor school performance in children. Low nutrient dense complementary foods are amongst the main causes of childhood malnutrition in developing countries. Thus, the use of locally available nutrient dense foods to improve infants nutrition is of considerable importance. A study to develop and assess sensory properties and consumer acceptability of nutrient dense porridge form locally available foods for infants in Tanzania was carried out in Morogoro region. Five formulations each containing soybeans, amaranth grains, pumpkin seeds and orange fleshed sweet potatoes (SAPO1-SAPO5) at different ratios were developed. The five developed formulations and two control samples were subjected to quantitative descriptive analysis (QDA) and consumer acceptability tests.With exception of oiliness, significant differences (p≤0.05) were observed between samples tested for all attributes. The formulated samples had significantly higher mean intensity scores of 5.4± 1.67-5.6± 1.67 for aroma, 5.1 ±1.46 -7.0 ±1.44 for hue, 5.3±1.75 - 5.6±1.63 for sweetness and 4.2±1.85-4.6±1.98 for oiliness than control samples. Control samples had higher texture values than formulated samples. Consumer groups showed different acceptability for control and formulations. Mothers preffered control samples to formulations contrary to students who preferred formulated samples to control samples. Furthermore, all formulations had higher scores in aroma, sweetness and oiliness compared to control groups, thickness and grittiness were higher in control groups than formulations, while SAPO 3, 4 and 5 had higher scores of color hue than other samples. SAPO5 was the most accepted formulation by both mothers and students. This suggests that its ingredients ratio produced a most accepted product and hence it can be recommended for adoption.