Physicochemical Composition and Apparent Degree of Polymerization of Fructans in Five Wild Agave Varieties: Potential Industrial Use

In this study, we characterize fructan extracts from five wild agave varieties at three ages to identify their potential use in the food industry. Physicochemical parameters (solids soluble total and pH), sugar content and fructan distribution profiles by high-performance anion-exchange chromatograp...

Full description

Bibliographic Details
Main Authors: Pamela I. Aldrete-Herrera, Mercedes G. López, Luis Medina-Torres, Juan A. Ragazzo-Sánchez, Montserrat Calderón-Santoyo, Marisela González-Ávila, Rosa I. Ortiz-Basurto
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Foods
Subjects:
Online Access:https://www.mdpi.com/2304-8158/8/9/404
Description
Summary:In this study, we characterize fructan extracts from five wild agave varieties at three ages to identify their potential use in the food industry. Physicochemical parameters (solids soluble total and pH), sugar content and fructan distribution profiles by high-performance anion-exchange chromatography (HPAEC) were evaluated. We found that the ages and variety influenced the carbohydrate content and also fructan dispersion. Two- to four-year-old plants exhibited the highest concentrations of free sugars and fructans, with a low apparent degree of polymerization (DP<sub>a</sub>) of ≤9 monomers, which highlights their potential use as prebiotics. Conversely, 10- to 12-year-old plants presented a low concentration of free sugars and fructans with a maximum DP<sub>a</sub> of 70 monomers, which can be used to obtain fractions with high, intermediate and low DP<sub>a</sub>. These fractions have a potential use in the food industry as prebiotic, soluble fibers, stabilizers and sweeteners, among others. The agave varieties <i>Agave</i> spp., <i>Agave salmiana</i>, and <i>Agave atrovirens</i> showed mainly fructooligosaccharides (FOSs). Due to the presence of these low molecular carbohydrates, prebiotics, fermented products and/or syrups could be obtained. <i>A. salmiana</i> spp. crassipina and <i>Agave tequilana</i> variety cenizo presented DP<sub>a</sub> ≤50 and DP<sub>a</sub> ≤70, respectively, which could be useful in the production of fructan fractions of different DP<sub>a.</sub> These fractions might be used as functional ingredients in the manufacture of a wide range of food products.
ISSN:2304-8158