Thermodynamics of a food macromolecular assembly: the case of okra mucilage

Abstract

Isolation steps of okra hydrocolloid and its thermodynamic parameters.

Mucilage formation in food: a review on the example of okra

“…Comparable trends on the projected area vs. hydration level have been reported for soya beans (Desphande et al, 1993) and for lentil seeds (C ß arman, 1996). Dimopoulou et al (2016) reported that the free energy associated with the solvation of macromolecules from the bulk of the okra fruit body is positive; that suggests that there is no spontaneity towards the en masse release of macromolecules to the aqueous phase. Ghori et al (2014) studied the swelling of okra extract-based pellets containing pharmaceutics and reported swelling within a few minutes (typically not more than 15-30 min), followed by a reduction in the extent of the swelling.…”

“…The differences between the two experimental sets were initially attributed to the inherent dissimilarities between cultivars. Recent thermodynamic measurements (Dimopoulou et al, 2016) and ongoing experiments all point to the importance of the prior status (history) of hydrogen bonding on the self-association of okra polymers. aqueous extraction.…”

“…hydrogen bonds between the polysaccharides and the bulk of the okra fruit). Dimopoulou et al (2016) reported that the free energy associated with the solvation of macromolecules from the bulk of the okra fruit body is positive; that suggests that there is no spontaneity towards the en masse release of macromolecules to the aqueous phase. However, the enthalpic component is generally exothermic, while it is in the same order of size to the entropic component.…”

“…aqueous extraction. Recent thermodynamic measurements (Dimopoulou et al, 2016) and ongoing experiments all point to the importance of the prior status (history) of hydrogen bonding on the self-association of okra polymers. There is now more confidence to believe that the ethanol treatment of the aqueous solution from Ndjouenkeu et al (1996) must have led to an arrangement of hydrogen bonding different to that of the direct extraction of AIS from Kontogiorgos et al (2012), leading to entirely different bulk selfassociated structures between the two cases.…”

Απομόνωση Και Φυσικοχημικός Χαρακτηρισμός Βιοπολυμερών Από Φυτικές Μήτρες

“…Ραρατθρείται επίςθσ ότι τα ςωματίδια των εκχυλιςμάτων παρουςιάηουν ετερογζνεια ςε επίπεδο εκατοντάδων νανομζτρων. (Zaharuddin, Noordin, & Kadivar, 2014;Dimopoulou, Tsivintzelis, Ritzoulis, & Panayiotou, 2016).…”