Development of Madan (Syzygium cumuni L.) Incorporated Novel Yoghurt

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dc.contributor.authorShanika, M.K.A.
dc.contributor.authorWedamulla, N.E.
dc.contributor.authorWijesinghe, W.A.J.P.
dc.date.accessioned2021-02-09T08:46:42Z
dc.date.available2021-02-09T08:46:42Z
dc.date.issued2020
dc.description.abstractMadan (Syzygium cumuni L.) is an underutilized fruit crop grown in Sri Lanka with promising functional properties. In this study, well ripen Madan fruits were used to develop fruit incorporated set yoghurt. Yoghurts were prepared with different sugar (0, 5 and 10% w/v) and gelatin (0.6, 0.7 and 0.8% w/v) levels to select the best combination. Pasteurized fruit pulp was added at the levels of 7.5, 10, 12.5, and 15% w/v with a preselected level of sugar and gelatin. Based on sensory evaluation (9-point hedonic test), selected treatment was tested against the control (set yoghurt without added fruits) for physicochemical and phytochemical properties. Shelf life and microbial analysis were carried out in three days intervals for 18-days. Based on the results of sensory analysis, it was revealed that 10% sugar, 0.8% gelatin, and 10% of fruit pulp were the best combination for the production of fruit yoghurt. Addition of Madan increased (p<0.05) the phenolic content (3.04±0.1 mg GAE 100 g-1 yoghurt), monomeric anthocyanin (4.42±0.4 mg L-1 ) and antioxidant activity (Ferric reducing power assay: 0.14±0.0 µ mol Fe+2 100 g-1 : IC50: 331.08±1.5 ppm) of fruit yoghurt compared to that of the control. Storage of the yoghurt samples for 18-days under refrigerated condition (<5ºC), increased (p<0.05) the acidity while decreased (p<0.05) the pH. Syneresis increased (p<0.05) with the storage period in the control sample while fruit yoghurt exhibited the decreasing (p<0.05) pattern with the time. Yeast and mold, Staphylococci spp, and Escherichia coli did not exceed the Sri Lankan Standard Institute recommendation during the 15 days of refrigerated storage (<5ºC). In conclusion, 10% fruit pulp was the best level for the production of Madan incorporated set yoghurt with promising antioxidant properties which have 15 days of shelf life at refrigerated conditions (<5ºC). . Keywords: Anthocyanin, Antioxidant activity, Total phenol, Yoghurt, Madanen_US
dc.identifier.isbn9789550481293
dc.identifier.urihttp://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/5888/proceeding_oct_08-307.pdf?sequence=1&isAllowed=y
dc.language.isoenen_US
dc.publisherUva Wellassa University of Sri Lankaen_US
dc.relation.ispartofseries;International Research Conference
dc.subjectFood Scienceen_US
dc.subjectFood Technologyen_US
dc.subjectFood Science & Technologyen_US
dc.subjectFruiten_US
dc.subjectDairy Industryen_US
dc.titleDevelopment of Madan (Syzygium cumuni L.) Incorporated Novel Yoghurten_US
dc.title.alternativeInternational Research Conference 2020en_US
dc.typeOtheren_US
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