Dehydrated strawberries for probiotic delivery: Influence of dehydration and probiotic incorporation methods

Author(s)

Oliveira, Aline Soares ^[1] ; Niro, Carolina Madazio ^[2] ; Bresolin, Joana Dias ^[3] ; Soares, Viviane Faria ^[3] ; Ferreira, Marcos David ^[3] ; Sivieri, Katia ^[1] ; Azeredo, Henriette M. C. ^{[3, 4]}

Affiliation

^[1] Sao Paulo State Univ Unesp, Sch Pharmaceut Sci, Postgrad Program Food & Nutr, Rodovia Araraquara Jau, Km 01, Campus Ville, BR-14800903 Araraquara, SP - Brazil

^[2] Fed Univ Sao Carlos UFSCar, Postgrad Program Biotechnol, Rod Washington Luis 235, BR-13565905 Sao Carlos, SP - Brazil

^[3] Embrapa Instrumentacao, R 15 Novembro, 1452, Caixa Postal 741, BR-13560970 Sao Carlos, SP - Brazil

^[4] Embrapa Agroind Trop, R Dra Sara Mesquita 2270, BR-60511110 Fortaleza, Ceara - Brazil

• Document type: Journal article
• Source: LWT-FOOD SCIENCE AND TECHNOLOGY; v. 144, JUN 2021.
• Web of Science Citations: 0

Abstract

In this study, dehydrated strawberries have been proposed as probiotic carriers. Strawberries were cut into halves, incorporated with probiotic Bacillus coagulans BC4 by two alternative methods (impregnation and alginate coating) and submitted to two alternative drying methods (freeze drying - FD - and oven drying - OD). Six treatments were carried out, namely: FD and OD (no probiotic), I-FD, I-OD, C-FD, and C-OD (I- and C- meaning impregnation and coating respectively). While the probiotic incorporation method affected a few properties of the resulting products (mainly the probiotic viability on processing), the drying methods resulted in remarkable differences. The freeze-dried strawberry halves presented higher retention of chemical (ascorbic acid and anthocyanin contents) and physical properties (shape, color, and firmness) as well as a better acceptance and higher probiotic viability, resulting in higher probiotic release into the small intestine. The I-FD treatment resulted in the highest probiotic viability after processing and through a 6-month storage (near 8 log cfu.g(-1)). (AU)

• FAPESP's process: 18/12733-6 - Alginate-based films as probiotic carriers
• Grantee: Henriette Monteiro Cordeiro de Azeredo
• Support Opportunities: Regular Research Grants