Anthocyanins: New techniques and challenges in microencapsulation

• Published in: Food research international Vol. 133; p. 109092
• Main Authors: Tarone, Adriana Gadioli, Cazarin, Cinthia Baú Betim, Marostica Junior, Mario Roberto
• Format: Journal Article
• Language: English
• Published: Canada Elsevier Ltd 01.07.2020
• Subjects: Anthocyanins; Anthocyanins - isolation & purification; Antioxidant properties; Bioaccessibility; Bioavailability; Bottom-up; Drug Compounding - methods; Food Handling - methods; Gastrointestinal Tract - drug effects; Humans; Microencapsulation; Plant Extracts - isolation & purification; Top-down; Top-down; Bottom-up; Anthocyanins; Bioaccessibility; Antioxidant properties; Microencapsulation; Bioavailability
• ISSN: 0963-9969; 1873-7145
• DOI: 10.1016/j.foodres.2020.109092

[Display omitted] •Anthocyanins are bioactive compound and they have antioxidant properties.•Anthocyanins are not stable in some environment condition.•Microencapsulation processes can provide stability for anthocyanins.•Anthocyanin microencapsulation processes are a challenge for the food industry. Anthocyanins are a bioactive compound belonging to the flavonoid classthatis present in human nutrition through plant-based foods. Due to their antioxidant properties, several health benefits related to their consumption are reported in the literature. The stability of the color and the properties of anthocyanins is strongly affected by pH, solvent, temperature, and other environmental conditions. In addition, the insufficient residence time of anthocyanins in the upper digestive tract causes apartialabsorption, which needs to be improved. These factshave led researchers to investigate new forms of processing that provide minimal degradation. Microencapsulation is a promising possibility to stabilize anthocyanin extracts and allow their addition to food products in a more stable form. The microcapsules can still provide a prolonged gastrointestinal retention time caused by the improvement of the bioadhesive properties in the mucus covering the intestinal epithelium. Although there are efficient and emerging techniques, anthocyanins microencapsulation is still a challenge for the food industry. The purpose of this work is to provide an overview of anthocyanins structure, absorptionand protection, and to show the main conventional and emerging microencapsulation methods and their pros and cons.