Spray-drying of casein/pectin bioconjugate microcapsules containing grape (Vitis labrusca) by-product extract. (30th January 2022)

• Record Type: Journal Article
• Authors: Carra, Jéssica Bassetto; Matos, Ricardo Luís Nascimento de; Novelli, Ana Paula; Couto, Renê Oliveira do; Yamashita, Fabio; Ribeiro, Marcos Alessandro dos Santos; Meurer, Eduardo César; Verri, Waldiceu Aparecido; Casagrande, Rubia; Georgetti, Sandra Regina; Arakawa, Nilton Syogo; Baracat, Marcela Maria
• Is Part Of: Food chemistry. Volume 368(2022)
• Publication Date: 2022-01-30
• Subjects: Anthocyanins -- Antioxidants -- Biopolymers -- Drug microencapsulation -- Polyphenols; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2021.130817
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Complex coacervation of pectin/casein and spray-drying process were combined. Novel biodegradable microcapsules containing grape by-product extract were obtained. Degradation of antioxidant polyphenols was mitigated in up to 88%. Polyphenol-rich microcapsules can be used in cosmetic and nutraceutical products. The microencapsulation platform may be applied to other thermolabile polyphenols. Abstract: Novel microcapsules containing grape peel by-product extract were obtained. In this pursuit, complex coacervation of casein/pectin bioconjugate and spray-drying were combined. We have investigated the role of the dispersion feed rate (FR ), drying air inlet temperature (IT ) and drying air flow rate (AR ) in the drying yield, microencapsulation efficiency, total polyphenols and anthocyanins contents, antioxidant activity, and morphology of the products. Also, the first-order degradation kinetics of the phytochemicals for both the extract and dried microcapsules was assessed and compared. The loss on the phytochemicals during spray-drying was attenuated in up to 88%, and the IT was the main factor affecting the particle properties. The polyphenols on the extract interacted with the polymers, influencing the assemble of the bioconjugate and the particle's features. Such microencapsulation strategy enhanced the thermal stability of the phytochemicals and rendered biocompatible and biodegradable products of which the nutraceutical and cosmeceutical application may have potential.