%0 Journal Article
%T Physiological and Physico-Chemical Characterization of the Soursop Fruit (Annona muricata L. cv. Elita) Caracterizaci車n Fisiol車gica y F赤sico-Qu赤mica del Fruto de la Guan芍bana (Annona muricata L. cv. Elita)
%A Carlos Julio M芍rquez Cardozo
%A Ver車nica Villacorta Lozano
%A Diana Paola Yepes Betancur
%A H谷ctor Jos谷 Ciro Vel芍squez
%J Revista Facultad Nacional de Agronom赤a, Medell赤n
%D 2012
%I Universidad Nacional de Colombia, Sede Medell赤n
%X . Fruit consumption is increasing around the world, just as its population. The World Health Organization recommends a minimum consumption of fruit 120 kg/person - year. Fruits such as soursop provide nutrients, phytochemicals and antioxidants which are vital to human health, as well as bioactive substances such as vitamin C, flavonoids, anthocyanins and carotenoids, among others. In this research, soursop (Annona muricata L. cv. Elita) fruits were collected at physiological maturity in two production seasons for their physiological (respiration rate, ethylene production and physiological loss of weight) and physico-chemical characterization (pulp, seeds and skin yield, total soluble solids (TSS), total acidity, pH and firmness). We found that ethylene production peaked at day 6 after-harvest, scoring 133.2 mL kg-1 h-1. This parameter was found to increase during postharvest, with peaks on days 4 and 6, coinciding with the climacteric peaks of biphasic respiration, the largest of which reached a value of 186.9 mg CO2 kg-1 h-1. This is probably the starter for the cascade of events that feature the ripening process, among which changes in TSS, acidity and fruit firmness were outstandingly visible. Resumen. En el mundo, el consumo de frutas es creciente, al igual que la poblaci車n. La Organizaci車n Mundial de la Salud recomienda un consumo m赤nimo de 120 kg/persona al a o. Frutas como la guan芍bana aportan nutrientes, fitoqu赤micos y antioxidantes de vital importancia para la salud humana, adem芍s de sustancias bioactivas como vitamina C, flavonoides, antocianinas y carotenoides, entre otros. En la presente investigaci車n, frutos de guan芍bana (Annona muricata L. cv. Elita), fueron recolectados en estado de madurez fisiol車gica o de cosecha, en dos 谷pocas de producci車n, para determinar sus caracter赤sticas fisiol車gicas (tasa de respiraci車n, producci車n de etileno y p谷rdida fisiol車gica de peso), y f赤sico-qu赤micas (rendimiento en pulpa, semillas y piel, s車lidos solubles totales (SST), acidez total, pH y firmeza). Se pudo constatar que la producci車n de etileno alcanz車 un m芍ximo en el d赤a 6 de la poscosecha, con un valor de 133,2 mL kg-1 h-1. Este par芍metro present車 un comportamiento creciente durante la poscosecha, con picos en los d赤as 4 y 6, coincidentes con los picos climat谷ricos bif芍sicos de la respiraci車n, el mayor de los cuales alcanz車 un valor de 186,9 mg de CO2 kg-1 h-1. Esto, probablemente es el activador de la cascada de eventos propios de la maduraci車n, donde sobresalen los cambios los niveles de s車lidos solubles totales, acidez y la firmeza de los f
%K Respiraci車n
%K etileno
%K transpiraci車n
%K fisiolog赤a poscosecha
%K Respiration
%K ethylene
%K transpiration
%K postharvest physiology
%U http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0304-28472012000100018