Composition of Pineapple Juice

Abstract

Major and some minor constituents were determined for a series of fresh pineapple juices. Results Include: soluble solids 11.2-16.2 g/100 g, acidity (reported as citric acid) 0.46-1.21 g citric acid/100 mL, fructose 1.72-4.75 g/100 mL, glucose 1.21-4.52 g/100 mL, sucrose 2.47-9.73 g/100 mL, citric acid 0.439-1.151 g/100 mL, malic acid 0.073- 0.391, Isocltrlc acid 80-265 mg/L, potassium 830- 1410 mg/L, formol value 0.74-1.69 meq/100 mL, proline 11-44 mg/L, and carbon isotope ratio 13.5- 11.2%o PDB. Use of these compositional values In the detection of adulterated pineapple juice is discussed.