Application of gum Arabic in the production of spray-dried chokeberry polyphenols, microparticles characterisation and in vitro digestion method

Abstract

Due to its high content of phenolics, black chokeberry has been proposed as a health-promoting material, especially use of chokeberry extract as a food or pharmaceuticals. Chokeberry extract was spray-dried using gum Arabic as a carrier. The optimal conditions for the efficient microencapsulation of chokeberry extract using spray-drying technique have been investigated. The aim of our study was to obtain microparticles with the best potential to improve functionality and stability of extracted chokeberry polyphenols, and to investigate the possibility of microbeads to protect active compounds during simulated digestion process. Morphological characteristics of microbeads were analyzed using FTIR and SEM techniques. Zeta potential, particle size and moisture content were determined. Released total phenolics and total anthocyanins content as well as concentration of individual anthocyanins were quantified before and after digestion process. Microparticles exhibited high encapsulation efficiency up to 87%, and high content of released polyphenols was achieved. After in vitro simulated digestion phenolic compounds decreased by 11-24%, exhibited higher protective effect of gum Arabic. Our results showed that chokeberry microparticles obtained by spray drying method could be useful supplements or functional food.

Impact of Freeze- and Spray-Drying Microencapsulation Techniques on β-Glucan Powder Biological Activity: A Comparative Study

“…On the other hand, based on the findings of demonstrably higher ( p < 0.05) contents of TP and TF in our SD samples than in the non-encapsulated (control) ones, a greater power of the SD technique to stabilize these bioactive compounds of the β-glucan powder compared to that of the FD one must be taken in consideration. In effect, microencapsulation by SD is widely employed to protect polyphenols in various matrices [ 70 , 99 , 100 , 101 , 102 , 103 , 104 , 105 ], and the ability was also confirmed in our study. Greater efficacy of SD on increasing content of TP and TF identified in our samples can again be associated with the MD which not only preserved the content of the phenolic compounds in both microencapsulated formulations but also most likely had a higher affinity to polyphenols and flavonoids during the extraction in SD microencapsulated samples.…”

Spray Drying and Spout-Fluid Bed Drying Microencapsulation of Mexican Plum Fruit (Spondias purpurea L.) Extract and Its Effect on In Vitro Gastrointestinal Bioaccessibility

“…As shown by the above-mentioned results, higher retentions were obtained in SFB microcapsules which had a thicker wall than SD microcapsules. Additionally, according to Nikolić et al [49], the microcapsules with a larger particle size have a better delayed release.…”

Effect of carrier type on the spray-dried willowherb (Epilobium angustifolium L.) leaves extract, powder properties and bioactive compounds encapsulation

“…Instability in an environment of high humidity, light and oxygen, unpleasant astringent taste and low bioavailability of polyphenolic compounds can significantly affect the therapeutic efficacy of extracts. These limitations could be solved using encapsulation techniques such as spray drying ( Ćujić Nikolić et al, 2018). By encapsulation, the liquid form of the extract is converted into a powder in which the active ingredients are trapped in the coating of the wall materials (carriers).…”