Influence of passion fruit juice on colour stability and sensory acceptability of non-sugar Yacon-based pastes

Brazilian Archives of Biology and Technology

Daniel Granato²  Inar Alves De Castro¹  Flávia Vilas Boas Wiecheteck Piekarski²  Cristina Benincá²  Maria Lucia Masson² 

[1] ,Universidade Federal do ParanáCuritiba PR ,Brasil

关键词: Smallanthus sonchifolius;    Diabetes;    Passion fruit;    Sensory analysis;    kinetics;    Polyphenol oxidases;   

DOI  :  10.1590/S1516-89132011000100020

来源: SciELO

【 摘 要 】

This work was aimed at studying the influence of PFJ and/or sodium disulphite on Yacon pulp colour, and evaluating the sensory attributes of Yacon non-sugar pastes. A colour kinetic evaluation of browning in 11 treatments containing Yacon tubers, yellow passion fruit juice (PFJ) and/or sodium disulphite, over the course of 240 minutes was studied to inactivate the PPOs activity. The evaluation of the colour alterations of Yacon tuber by the addition of variable amounts of PFJ and sodium disulphite enabled identification of efficient treatments for the inhibition of browning: T7 (300 g kg -1 PFJ), T8 (400 g kg -1 PFJ), and T10 (150 g kg -1 PFJ + 0.25 g kg -1 sodium disulphite). These treatments presented high colour intensity (C*) and an insignificant (P <0.05) total colour degradation (ΔE). The products elaborated by the cooking of these ingredients were submitted to the acceptability test and data showed that T7 garnered an acceptance index of 78%.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License