Abstract
ABSTRACTLisianthus [Eustoma grandiflorum (Raf.) Shinners] is a flower which, once cut, requires vase care-solution to increase its postharvest life and quality. The objective of this project was to assess the effects of pectin-derived oligosaccharins solution (Pectimorf®) on the postharvest vase quality of lisianthus cut flowers. Six vase-solution treatments were tested using four different Pectimorf® and sucrose mixtures, one commercial vase product, and only water (control) during the entire storage period (16 days) at room temperature. Results suggest that using Pectimorf® floral stem weight increased (20% greater than control), as did quality and leaf turgidity (>commercial limit); bent neck or pedicel curvature decreased (<20°), and antioxidant enzyme activities, phenolic compounds and antioxidant capacity were modified. Furthermore, Pectimorf® reduced the growth of microorganisms in the vase solutions (>98.5%) compared to control and sucrose treatment. The vase life of the lisianthus cut flowers lasted 8 days while maintaining good visual quality. Thus, the pectin-derived oligosaccharins can be used as a supplement in vase solutions to maintain the quality and postharvest vase life of lisianthus cut flowers.Abbreviations: CAT: catalase; CFU: colony-forming units; GAE: gallic acid equivalent; POD: peroxidases; ROS: reactive oxygen species; SOD: superoxide dismutase.
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