YIELD AND QUALITY OF JUICE FROM PASSION-FRUIT (PASSIFLORA-EDULIS), MAYPOPS (P-INCARNATA) AND TETRAPLOID PASSION-FRUIT HYBRIDS (P-EDULIS X P-INCARNATA)

Yield and properties of juice from purple and yellow passion fruit (Pa ssiflora edulis), maypops (P incarnata) and tetraploid hybrids of P ed ulis and P incarnata were compared. Weight, proportion filled, number of seeds and yield of juice per fruit were lower in tetraploid hybrids than in P edulis. Acidity and soluble solids were highest in tetraplo id hybrids and lowest in maypops. Fructose, glucose, sucrose, citric a nd malic acids were present in all samples. Fructose and glucose were the major sugars in passion fruit; sucrose was highest in tetraploid h ybrids and maypops. Citric. the predominant acid in all samples. was h ighest in the yellow passion fruit followed by tetraploid hybrids and purple passion fruit. Malic acid was highest in purple-flowered maypop and lowest in white-flowered maypop.