The physicochemical properties comparison of the natural coconut water and the packaging coconut water

Abstract

The coconut water is a healthy beverage that can be used as a solvent in which a heating process can increase the solubility of the solution The nature of coconut water easily changes in the open air. Therefore, a natural coconut water is processed into packaging coconut water. But, the packaging coconut water often contains many additional ingredients which can change the taste and nutrition of coconut water. The aim of this research was to compare the physicochemical properties between a natural coconut water (NCW) and packaging coconut water (PCW). The samples consisted of 4 groups: (1) unheating-NCW (uh-NCW), (2) heating-NCW (h-NCW), (3) unheating-PCW (uh-PCW), and (4) heating-PCW (h-PCW). The physicochemical properties were analyzed based on the UV-Vis spectrum λ 190-790 nm, pH, turbidity, and conductivity. The NCW and PCW respectively had specific wavelengths at 229, 262 nm and 286, 296 nm. PCW had a more absorbancy than an NCW. Heating did not affect the physicochemical properties of an NCW as well as PCW. PCW had higher turbidity than NCW. The high absorbancy and turbidity in PCW were caused by the additional ingredients. All samples had pH which ranges from 5, 42 -5, 49, turbidity 19, 48 - 69, 63 NTU, and conductivity 15, 48 -19, 88 mS.