A Comparative Study of the Physicochemical, Nutritional Characteristics and Microbiological Contamination of Fresh Nipa Palm (Nypa fruticans) Sap

Authors

  • Thanikan Thorasin

Abstract

Aim of this research was to study the microbial contaminants, physiochemical properties and nutritional values present in ten fresh nipa palm sap samples from different places of Nakhon Si Thammarat province (Khanap Nak Sub-District and Suea Hueng Sub-District). The fresh nipa palm sap samples were collected from different environments such as salt water, brackish water, abandoned shrimp pond and fresh water. The results showed that the pH values of nipa palm samples was ranged between 4.3 to 6.9, and the average of total soluble solids was varied from 13.6 to 22.5 °Brix. Interestingly, the nipa palm sap collected from Khanap Nak Sub-District showed both higher acidity and total soluble solids than samples from Suea Hueng Sub-District. Despite of that, the total acidity and alcohol content of samples from both areas were below 0.3 percent. With regard to the microbiological characteristics, the result showed the difference in number of microorganisms among samples and coliform bacteria can also be detected in some samples. The sucrose, glucose and fructose contents were varied within a range from 3.4 - 18.8%, 1.7-.39% and 0.5-2.8%, respectively. Furthermore, amounts of vitamin C, sodium and potassium ranged between 6-14 mg/100 ml, 66-121 mg/100 ml and 116-188 mg/100 ml respectively; however, vitamin A could not be detected in any samples. In conclusion, we observed that a large variation property of fresh nipa palm sap was mainly due to microbiological contamination during nipa palm collecting time.                Keywords: physicochemical characteristics, nutritional characteristics, microbiological contamination,                  nipa palm sap

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Published

2018-09-14