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Efeito de enzimas de maceração na textura do palmito (Euterpe edulis Mart) Influence of cellulase, pectinase and hemicellulase on the texture of hearts of palm (Euterpe edulis Mart.)

By Regina Kitagawa GRIZOTTO and Tobias J.B.de MENEZES

Abstract

Com a finalidade de ampliar o aproveitamento da palmeira produtora do palmito estudou-se a influência da poligalacturonase e de enzimas maceradoras na textura das partes semi-rígidas do vegetal não-comestíveis, incubando-se preparados comerciais de celulase, hemicelulase e poligalacturonase com o palmito preparado na forma de pequenos toletes (1-3 cm de comprimento) e em porções de 2cm do raquis do vegetal. Embora os tratamentos com hemicelulase e mistura de hemicelulase e poligalacturonase tenham promovido ligeiro amaciamento do palmito, os resultados mostraram ,de modo geral, acréscimo na textura do palmito cortado em porções de 3,0 cm e em fatias de 1,0 cm indicando solubilização intensa das regiões suscetíveis a hidrólise com a permanência das regiões duras mais ricas em lignina. Como nos outros tecidos do palmito, no raquis fibroso, não foi comprovada estatiscamente a ação das enzimas na textura do vegetal.<br>With the aim of amplifying the utilization of the palm tree the influence of poligalacturonase and macerating enzymes on the texture of the hard tips of hearts of palm was studied, incubating commercial preparations of cellulase , hemicellulase and poligalacturonase with the hearts of palm, prepared as small stalks of 1-3 cm length and with 2 cm portions of the rachis of the plant. Although the treatments containing hemicellulase and a mixture of hemicellulase and poligalacturonase promoted a slight softening of the hearts of palm, the results generally showed a hardening of the texture of the hearts of palm prepared as stalks of 1 to 3 cm indicating great solubilization of the parts susceptible to hydrolysis, the hard lignin rich parts remaining intact. As in the other tissue of the plant, in the rachis of the fibrous hearts of palm, the action of the enzymes was not statiscally proven

Topics: palmito, textura, celulase, pectinase, hemicelulase, hearts of palm, texture, cellulase, pectinase, hemicellulase, Agriculture (General), S1-972, Agriculture, S, DOAJ:Agriculture (General), DOAJ:Agriculture and Food Sciences, Nutrition. Foods and food supply, TX341-641, Home economics, TX1-1110, Technology, T, DOAJ:Nutrition and Food Sciences, Technology (General), T1-995
Publisher: Sociedade Brasileira de Ciência e Tecnologia de Alimentos
Year: 1997
DOI identifier: 10.1590/S0101-20611997000300002
OAI identifier: oai:doaj.org/article:1e03c5a44b1e48dcbcd2377bdfde6cfb
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