EFECTO DEL PRE-TRATAMIENTO CON ULTRASONIDO EN LA EXTRACCIÓN DE PECTINA CONTENIDA EN EL ALBEDO DEL MARACUYÁ (Passiflora edulis).

Pectin is a polysaccharide contained in the cell wall of most vegetables and fruits, with beneficial health properties and widely used in the food industry. The aim of the study was to evaluate the effect of pre-treatment with ultrasound (US) in extracting pectin contained in the albedo of passion fruit, the samples were exposed to 40 KHz at a temperature of 30, 45 and 60°C for 10, 20 and 30 minutes. The samples were extracted by acid hydrolysis ratio 1: 3 (% w/%v) on heating to 80°C for 30 minutes shaking at 700 rpm, we proceeded to filter and precipitate by adding 96% ethanol in a ratio (1:1) (%v/%v). Determining that the samples treated at 40 KHz/45°C/20 min, obtained a 40% increase in the extraction yield of pectin compared to control samples; probably due to the decrease in pH and the effect of cavitation where the particles are accelerated to vibrate and ultrasonic action, causing a macro turbulence and interparticle collision biomass accelerating diffusion; pectin extract achieving high quality and usable for the production of products of interest. [ABSTRACT FROM AUTHOR]