The Physicochemical and Bio-chemical Properties of Water and Microbiological Properties of Oysters (Crassostrea iredalei) in Timalan, Naic, Cavite

Abstract

One of the prime sources of livelihood in Timalan, Naic, Cavite is oyster farming. Oysters are the second most commercially imported marine organism. This study focuses on the physio-chemical and biochemical properties of water and microbiological properties of Oyster (Crassostrea iredalei) in Timalan, Naic, Cavite. The results of this study would be a great help to increase awareness and promote action to the concerned authorities after studying the level of water contamination and its effects on oysters that are in turn consumed by humans. The needed materials were gathered. The oyster and water samples that were taken in the oyster farm were carefully brought to the Food and Nutrition Research Institute, Department of Science and Technology in Taguig City, Manila. For the water samples, it was brought to the Cavite Water and Waste Water Testing Center, Department of Science and Technology in Trece Martires City, Cavite. Upon the receipt of the results, they were recorded, analyzed and interpreted. This was then repeated every first Tuesday of the months of March, April, and May 2017. The results were obtained and were computed to find its mean and standard deviation. For the Physico-chemical properties of water, the total dissolved solids (TDS) mean score was 6819 mg/L and the standard deviation was 4889.53 mg/L. The dissolved oxygen (DO) has a mean score of 5.3mg/L and the standard deviation was +/-1.68 mg/L. The water pH mean score was at 7.13 mg/l at 25oC and the standard deviation was +/-.015 mg/L. The oil and Grease mean was at less than 2mg/L. For the microbiological properties of water, the total coliform count mean was at 11,733 MPN/100 g and the standard deviation was +/-10,869.38 MPN/100 g. The E.coli count mean was at 3,967 MPN/100 g and the standard deviation was +/-3605. 83 MPN/100 g.For the microbiological properties of oysters, the total coliform count mean was 7,713 MPN/100 g and the standard deviation was at +/-10,689.38 MPN/100 g. The E.coli count mean was 886.7 MPN/100 g and the standard deviation was +/-3605.83 MPN/100 g. The water pH, Dissolve oxygen, and oil grease passed the acceptable value while the total coliform count, E. coli of the water and oyster of Timalan, Naic Cavite failed or wasn’t able to meet the satisfactory level of the acceptable value. This study proved that the oysters founded in Timalan, Naic, Cavite were not safe for human consumption. Since the oysters failed to passed the acceptable value.