Red araçá pulp microencapsulation by hydrolyzed pinhão starch, and tara and arabic gums

• Published in: Journal of the science of food and agriculture 2021-03, Vol.101 (5), p.2052-2062
• Main Authors: Rosário, Fernanda Menegon, Biduski, Barbara, Santos, David Fernando dos, Hadlish, Elisângela Vanessa, Tormen, Luciano, Santos, Gustavo Henrique Fidelis dos, Pinto, Vânia Zanella
• Format: Article
• Language: English
• Subjects: Anthocyanins; Anthocyanins - chemistry; antioxidant activity degradation; Antioxidants; Bioactive compounds; Brazil; Brazilian native fruit; Carotene; Carotenoids; Carotenoids - chemistry; Coating; Coatings; Dry weight; Encapsulation; Fabaceae - chemistry; Flavonoids; Flavonoids - chemistry; Fruit - chemistry; Gallic acid; Gum Arabic - chemistry; Hydrolysis; Indigenous species; Microencapsulation; Phenolic acids; Phenols; Plant Extracts - chemistry; Plant Gums - chemistry; Protective coatings; Psidium - chemistry; Psidium cattleianum; Pulp; Starch; Starch - chemistry; Weight; β-Carotene
• ISSN: 0022-5142; 1097-0010
• DOI: 10.1002/jsfa.10825

BACKGROUND Red araçá is a Brazilian native species whose fruits are rich in phenolic acids, flavonoids, anthocyanins, and carotenoids. To preserve the properties of compounds during processing, red araçá pulp (RAP) was encapsulated by hydrolyzed pinhão starch (PS), tara gum (TG), and arabic gum (AG) in different blends in equal proportions, serving as a coating material. RESULTS Fresh RAP had a gallic acid equivalent of 3098 mg per 100 g of dry weight, 156.29 μg β‐carotene per gram of dry weight, total anthocyanins of 18 mg per 100 g of dry weight and exhibited high antioxidant activity. The highest encapsulation efficiency achieved with the PS, TG, and AG blend was 80.4% for the total carotenoids, and that for the total anthocyanins was 76% with the TG and AG blend. Only one step of antioxidant activity degradation was identified, and the carrier system PSTG was efficient at maintaining the antioxidant activity, with half‐life of 23.60–37.27 days. CONCLUSION The use of PS alone as a coating material or associated with TG and AG gums resulted in improved retention of bioactive compounds, these being an excellent alternative coating material since they improved the stability of the antioxidant activity of RAP. © 2020 Society of Chemical Industry