Physical and chemical properties, pectinases activity, and cell wall pectin of Acidulus, Momordica, Inodorus and Cantalupensis melons with different ripening degree at harvest

The objective of the present study was to evaluate the physical and chemical changes, pectinases activity, and cell wall pectin in melon varieties Acidulus (access 16), Momordica (access 2), Inodorus (cv. ‘Iracema’) and Cantalupensis (cv. ‘Olympic’), in the relation of ripening degree at harvest. Me...

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Published in:Notulae botanicae Horti agrobotanici Cluj-Napoca 2021-01, Vol.49 (2), p.12062
Main Authors: PONTES, Felipe M., SARMENTO, José D. A., De A. MELO, Naama J., De MEDEIROS, Erika V., MORAIS, Patrícia L. D., de S. NUNES, Glauber H.
Format: Article
Language:English
Subjects:
beta-galactosidase
Cell walls
Chemical activity
Chemical properties
commercial
Cucumis melo
Enzymes
Fruits
Galactosidase
Iracema
Melons
methylesterase
Momordica
non-commercial melon
Pectin
Pectinase
Pectinesterase
Polygalacturonase
Ripening
Sodium
Sodium carbonate
β-Galactosidase
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Summary:The objective of the present study was to evaluate the physical and chemical changes, pectinases activity, and cell wall pectin in melon varieties Acidulus (access 16), Momordica (access 2), Inodorus (cv. ‘Iracema’) and Cantalupensis (cv. ‘Olympic’), in the relation of ripening degree at harvest. Melon fruits were planted and evaluated with different ripening degree at harvest, from 15 to 35 days after anthesis (DAA). The fruits, arranged in a completely randomized design, had been evaluated on the harvest days to physical and chemical characteristics. We evaluate pectin methylesterase, polygalacturonase, beta-galactosidase, and pectin contents (water-soluble, chelate soluble, and sodium carbonate soluble). The ideal harvest for each melon was, 35 days after anthesis for cv ‘Iracema’, 30 days after anthesis for cv. ‘Olympic’, 30 days after anthesis for access 16, and 20 days after anthesis for access 2. High pulp firmness of access 16 is associated with the high levels of sodium carbonate soluble pectin and low levels of polygalacturonase and beta-galactosidase activity. Momordica melon fruit cracking is related to the high levels of pectinases activity, as well as pectin degradation.
ISSN:0255-965X
1842-4309
DOI:10.15835/nbha49212062