Browsing by Author "Jayarathne, M.P.K."

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    Development of Buttermilk Pudding Incorporating Skim Milk Powder, Condensed Coconut (Cocos nucifera) Milk and Kitul (Caryota urens) Treacle
    (Uva Wellassa University of Sri Lanka, 2010) Illankoon, I.M.V.E.; Mudannayake, D.C.; Abeysinghe, A.M.N.L.; Jayarathne, M.P.K.; Silva, K.F.S.T.
    Buttermilk is the major byproduct of butter industry. Lack of utilization as a food, shorter shelf life and low total solids content are the three major limitations associated with buttermilk. Few studies have been conducted on improving the utilization of buttermilk as dessert. Aim of this study is to add value to buttermilk by developing buttermilk pudding incorporating skim milk powder, condensed coconut (Cocos nucifera) milk and kitul -(Caryota urens) treacle. Sensory evaluations were conducted to select the best percentages of skim milk powder, condensed coconut milk, kitul treacle and gelatin for buttermilk pudding. Skim milk powder, condensed coconut milk and kitul treacle levels were changed as 10% (wlw), 20% (w/w), 30% (w/w) and gelatin levels were changed as 1% (w/w), 2% (w/w) and 3% (wlw). The selected samples were analyzed for shelf life during day 1, 3, 7, 8, 10 and 12. Shelf life determination was done by analyzing coliform, yeast and mould, total colony count, pH and organoleptic qualities. Sensory evaluations were done by 30 untrained panelists to select the best percentage of skim milk powder, condensed coconut milk, kitul treacle and gelatin. Sensory data were analyzed by Freedman non parametric statistical method and pH, coliform, yeast and mould, total colony count were analyzed by correlation test. Overall acceptability was highest (P<0.05) in 20% (w/w) skim milk powder, 20% (w/w) condensed coconut milk, 20% (w/w) kitul treacle and 2% (w/w) gelatin added buttermilk pudding. Yeast, moulds and total colony count were increased (P<0.05) and pH decreased (P<0.05) after 10 days at 4 °C. According to the results buttermilk pudding incorporated with 20% (w/w) skim milk powder, 20% (w/w) condensed coconut milk, 20% (w/w) kitul treacle and 2% (w/w) gelatin (Percentages were calculated by weight of buttermilk) has been selected as the best formula with highest sensory attributes. Buttermilk pudding can be kept under refrigeration condition (4 °C) for 10 days without any quality deterioration. Key words: Buttermilk, Pudding
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    Development of Cocoa and Coffee Based Set Yoghurt According to Sri Lankan Consumer Preference
    (Uva Wellassa University of Sri Lanka, 2011) Sabry, M.B.M.; Jayarathne, M.P.K.; Henagamage, A.P.
    Note: See the PDF Version Dairy products play a major role in human diet as milk is complete food. Yoghurt is one of the dairy products, popular as a desert which contains standardi7.ed full cream milk, sugar, gelatin, permitted stabilizer and colorings. Yoghurt market in Sri Lanka is still iii growing stage compared with other countries. Consumer preference is due to increasing desire to take a more proactive role iii optimizing personal health and wellbeing without relying on pharmaceuticals. The consumption of fermented yoghurt iii which lactose has been converting to Tactic acid has helped to reduce the risk of having pathogenic microorganism grow in the food (Baker and Miller, 1990). Consumer preference is considered as one of the major critical parameters iii food industry including dairy products. Vanilla, chocolate, banana, mango, strawberry are the different types of flavored yoghurts available in the market according to the consumer preference. Cocoa and coffee have lots of health benefits and can be used as flavors iii yoghurt industry. Cocoa is rich source of antioxidant flavonoids, which may have beneficial cardiovascular effects on health and coffee contains caffeine, which acts as a stimulant. (Tank ine and Robison, 1985). Therefore, the present study was carried out to produce cocoa and coffee based set yoghurt according to Sri Lankan consumer preference and as a new value added product for dairy industry.
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    Development of Value Added Yoghurt with Rice (Oryza saliva) Flour and Sesame (Sesamum indicum
    (Uva Wellassa University of Sri Lanka, 2012) Ishanka; Ranasinghe, M.K.; Jayarathne, M.P.K.
    Brown rice (Otyza saliva) is an abundant cereal which possesses high levels of carbohydrates, fiber, vitamins (B2, B3 and B1) and minerals like Iron, Phosphorus, Potassium and Calcium and protein lesser cholesterol (HARTI, 2011).Yoghurt is a highly consumed fermented product in the market. This study was carried out to develop a set type yoghurt by incorporating brown rice flour and sesame seeds to assess the effect of brown rice flour and sesame seeds on the physicochemical and sensory properties of yoghurt.Best gelatin percentage was selected by sensory evaluation using 07 trained panelistswith varying the gelatin percentage as 0.3%, 0.4%, 0.5%, 0.6% (% by weight). There were three treatments varying the levels of brown rice flour percentages as 3%, 4% and 5% (% by weight) and evaluated using 30 untrained panelists. Titratable acidity, pH, Total Colony Count (TCC), Coliform,yeast and molds were determined for 15 days of storage for selected yoghurt samples based on sensory evaluation. Fat %, Protein content, Total Solids and Carbohydrates were analyzed. Data were analyzed using one way ANOVA and Friedman non parametric test.According to sensory evaluation I, yoghurts prepared by incorporating 0.4% (w/v) gelatin and according to sensory evaluation II, yoghurts prepared by incorporating 4% (w/v) brown rice flour and 2%(w/v) sesame seeds have shown significantly higher preference (P<0.05) with all sensory attributes. There was a significant (P< 0.05) difference in Titratable acidity, pH, TCC, Coliform,yeast and molds value during refrigerated storage of control and selected sample. Proximate composition of the final product is 73.32% Moisture, 3.75 % protein, 3.95% fat, 17.23% carbohydrates, 0.33% fiber and 1.42 % ash.Best incorporation level of brown rice flour, sesame seed and gelatins 4% and 2% and 0.4% respectively. The shelf life of selected sample is 11 days at 4±I °C.