Manufacturing Process And Characterization Of Isotonic Beverages Made From Coconut Water With The Addition Of Blueberry

Coconut water is part of the coconut fruit that contains various nutrients such as minerals, vitamins, antioxidants, amino acids and enzymes that are beneficial to the body. Coconut water can be developed as an isotonic drink because the nutrients in coconut water have a good electrolyte balance like human body fluids. Coconut water, especially in young coconuts, contains quite good nutrients so that it can be categorized as a highly nutritious, hygienic and natural drink and there have been many studies that prove it can cure various diseases. Currently there are coconut water products that are used as isotonic drinks on the market, but not many variations are added. So, in this study, the addition of variants was carried out to improve the taste and additional benefits into the isotonic drink. The addition of variants carried out is by adding blueberry fruit extract. This study aims to determine the most optimum formulation of the ratio of young coconut water and blueberry extract and what tests are carried out to determine the optimum formulation. Where in this study conducted by making several variations of the addition of young coconut water and blueberry extract, namely 95% coconut water and 5% blueberry fruit extract (F1), 90% coconut water and 10% blueberry extract (F2), 85% coconut water and 15% blueberry extract (F3) and 80% coconut water 20% blueberry extract (F4). Then to find out the most optimum formulation, pH, viscosity and organoleptic testing were carried out. Then the results showed that formula F3 has a pH of 3.77 which indicates that this isotonic drink is in accordance with the provisions of the National Standards Agency, has a viscosity of 1.4 cP which is in accordance with the viscosity of isotonic drinks on the market and has the highest average general acceptance of 4.64 obtained from organoleptic testing with a hedonic test conducted to determine the highest favorability value tested by 10 respondents, so that the formula becomes the most optimal formula in making isotonic drinks from young coconut water and blueberry extract.