2011
DOI: 10.1590/s1413-70542011000600021
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Water adsorption isotherms and isosteric sorption heat of spray-dried and freeze-dried dehydrated passion fruit pulp with additives and skimmed milk

Abstract: Moisture equilibrium data of passion fruit pulp powders with maltodextrin and gum arabic were obtained by two different drying methods (spray drying and freeze drying) and determined at 20, 30, 40 and 50 o C. Skimmed milk was used to substitute part of these additives in the samples. One formulation using passion fruit pulp/maltodextrin/skimmed milk (PMS) was prepared, and another using passion fruit pulp/gum arabic/skimmed milk (PGS). The behavior of curves was type III, according to Brunauer's classification… Show more

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Cited by 21 publications
(12 citation statements)
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“…All isotherms (Figure ) displayed Type III (Flory‐Huggins) isotherm model (Brunauer et al, ). The results concurred with previous studies on hard candy products or food system with small soluble molecules (Catelam, Trindade, & Romero, ; Hadjikinova et al, ; Rodríguez‐Bernal et al, ). Generally, EMC of hard candies increased as the storage's relative humidity (or a w of the samples) increased at constant temperature.…”
Section: Resultssupporting
confidence: 92%
“…All isotherms (Figure ) displayed Type III (Flory‐Huggins) isotherm model (Brunauer et al, ). The results concurred with previous studies on hard candy products or food system with small soluble molecules (Catelam, Trindade, & Romero, ; Hadjikinova et al, ; Rodríguez‐Bernal et al, ). Generally, EMC of hard candies increased as the storage's relative humidity (or a w of the samples) increased at constant temperature.…”
Section: Resultssupporting
confidence: 92%
“…A amostra contendo maltodextrina mostrou-se mais estável, apresentando maiores valores de X m em ambos os modelos (GAB e BET) podendo ser exposta a ambientes com maiores umidades relativas se comparada à amostra do pó da polpa de cajá integral. Oliveira et al (2012) O valor da constante K de GAB representa uma medida das interações entre as moléculas do adsorvato com o adsorvente (Catelam et al, 2011). Segundo Timmermann (2003) a constante K de GAB aumenta com a força de interação entre adsorvato e adsorvente.…”
Section: Resultsunclassified
“…Este fato foi identificado para diversos produtos alimentícios, como folha e caule de coentro desidratada (Coriandrum sativum L.) , polpa de maracujá desidratado (Passiflora edulis fo. flavicarpa O. Deg) (CATELAM et al, 2011), arroz em casca …”
Section: Methodsunclassified