Edirisinghe, E.D.M.T.Himali, S.M.C.Abeyrathne, E.D.N.S.2021-12-142021-12-1420169789550481095http://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/8000/23-2016-Effect%20of%20Gammalu%20%28Pterocarpus%20marsupi.pdf?sequence=1&isAllowed=yCoating of eggs is one of the methods used to preserve egg quality and extend the shelf-life. Objective of this research was to check the suitability of Gammalu (Pterocarpus marsupium) latex as a coating material on eggs to control egg quality and sensory attributes over an extended time duration. Total of 369 eggs from 38 weeks old ISA¬Shaver Brown were purchased from a government livestock farm. Eggs were individually weighed and assigned as completely randomized design to five different coating treatments as three Gammalu latex solutions, mineral oil (positive control) and uncoated (negative control) and stored at room temperature(27±2°C). The weight loss, internal quality parameters such as Haugh unit, yolk index, albumen and yolk pH values and sensory qualities of eggs were determined. Microbiological analysis was done to identify Salmonella in the internal contents of eggs. Only mineral oil coated eggs had significantly lower weight losses during the storage period (p<0.05). No significant differences in all internal quality parameters evaluated among non-coated and Gammalu latex coated eggs were observed (p>0.05). Haugh unit and yolk index decreased whereas weight loss and albumen and yolk pH values increased during the storage. Non-coated eggs changed from grade AA to C within 3 weeks. However, Gammalu latex maintained B grade up to 4 weeks and mineral oil maintained B grade during 6 weeks of storage periods. No significant difference in overall acceptability of hard boiled eggs after 4 weeks was observed. All coated eggs were negative for Salmonella indicating that eggs were microbiologically safe throughout the storage. This study demonstratedthat Gammalu latex coatings cannot preserve the internal quality of eggs and extend the shelf life of eggs compared to mineral oils but it has the potential for shelf-life extension for several weeks compared with non-coated eggs. Keywords: Gammalu, Internal quality, Sensory, Chicken egg, Shelf-life Acknowledgement: This research was supported by the International Foundation for Science (IFS) under grant EZ5559-1.enEggAnimal SciencesFood TechnologyFood ScienceOther