Biopolymer-prebiotic carbohydrate blends and their effects on the retention of bioactive compounds and maintenance of antioxidant activity. (25th June 2016)

• Record Type: Journal Article
• Authors: Silva, Eric Keven; Zabot, Giovani L.; Cazarin, Cinthia B.B.; Maróstica, Mário R.; Meireles, M. Angela A.
• Is Part Of: Carbohydrate polymers. Volume 144(2016)
• Page Start: 149
• Page End: 158
• Publication Date: 2016-06-25
• Subjects: Inulin -- Modified starch -- Gum acacia -- Geranylgeraniol retention -- Annatto seed oil; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2016.02.045
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: We evaluated the use of inulin as encapsulating matrix of lipophilic bioactive compounds. We studied blends of inulin with modified starch, whey protein isolate and gum acacia. Whey protein isolate + inulin blend yielded the highest encapsulation efficiency. Encapsulation of annatto seed oil maintained geranylgeraniol composition. Blends with inulin were efficient for maintaining antioxidant activity (ORAC and DPPH). Abstract: The objective of this study was to evaluate the use of inulin (IN), a prebiotic carbohydrate without superficial activity, as an encapsulating matrix of lipophilic bioactive compounds. For achieving the encapsulation, IN was associated with biopolymers that present superficial activity: modified starch (HiCap), whey protein isolate (WPI) and gum acacia (GA). Encapsulation was performed through emulsification assisted by ultrasound followed by freeze-drying (FD) process to dry the emulsions. All blends retained geranylgeraniol. GA-IN blend yielded the highest geranylgeraniol retention (96 ± 2 wt.%) and entrapment efficiency (94 ± 3 wt.%), whilst WPI-IN blend yielded the highest encapsulation efficiency (88 ± 2 wt.%). After encapsulation, composition of geranylgeraniol in the annatto seed oil was maintained (23.0 ± 0.5 g/100 g of oil). Such findings indicate that the method of encapsulation preserved the active compound. All blends were also effective for maintaining the antioxidant activity of the oil through ORAC and DPPH analyses.