Inulin/fructooligosaccharides/pectin-based structured systems: Promising encapsulating matrices of polyphenols recovered from jabuticaba peel

Author(s)

Tarone, Adriana Gadioli ^[1] ; Silva, Eric Keven ^[2] ; Betim Cazarin, Cinthia Bau ^[3] ; Marostica Junior, Jr., Mario Roberto ^[1]

Affiliation

^[1] Univ Estadual Campinas, UNICAMP, Sch Food Engn, LANUM Lab Nutr & Metab, FEA, Rua Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

^[2] Univ Estadual Campinas, UNICAMP, Sch Food Engn, LASEFI, DEA, FEA, Rua Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

^[3] Univ Estadual Campinas, UNICAMP, Sch Food Engn, LAFOP Lab Prot Source, FEA, Rua Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

• Document type: Journal article
• Source: FOOD HYDROCOLLOIDS; v. 111, FEB 2021.
• Web of Science Citations: 4

Abstract

This paper investigated the effects of fructooligosaccharides (FOS) and inulin with different degrees of polymerization (DP) on the rheological, physical, and microstructural properties of pectin-based structured systems and their performance as encapsulating matrices of polyphenols extracted from jabuticaba (Myrciaria jabuticaba (Vell.) Berg) peel. The pseudoplastic pectin-based systems presented a predominantly viscous behavior. The addition of FOS diminished their apparent viscosity and the consistency index. On the other hand, the increase of inulin DP increased them. The rheological characteristics and microstructure found in the pectin-based encapsulating systems with the addition of inulin with DP >= 23 (P + IN23) enable its use as a functional structuring food ingredient. The addition of inulin darkened the samples with the increase in DP, indicating better color retention in the pectin-based matrix with higher inulin DP. It also showed the highest values of chemical properties like bioactivity and encapsulation efficiency (EE) (85.7%), followed by the sample with the addition of inulin with DP >= 10 (P + IN10) (80.6%), and the sample with the addition of FOS (P + FOS) (77.9%). Pectinbased sample (P) had the lowest values and EE (75.5%). Therefore, the addition of inulin improved these parameters, and this improvement was gradual with the increase of DP. During the four weeks of stability evaluation, only P + IN10 and P + IN23 samples remained stable. In the last week evaluated, P + IN23 presented the highest percentage of relative oxygen radical absorbance capacity (94%), and the values decreased with the decrease of DP (P + IN10 = 76% and P + FOS = 61%). The P encapsulating matrix presented the second-highest percentage (82%). P and P + IN23 samples were efficient in protecting the jabuticaba peel extract. They exhibited good retention of the antioxidant capacity. Likewise, the inulin addition and its molecular chain size contributed to the binding reordering of the system. (AU)

• FAPESP's process: 15/50333-1 - COBRA: a novel compound discovery pipeline for rapid and cost-effective identification of bioactives with health beneficial effects in Brazilian crops
• Grantee: Glaucia Maria Pastore
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 15/13320-9 - Effect of pulp oil and tea of leaves from avocado Hass variety associated with physical activity in the treatment of obesity induced by high-fat diet
• Grantee: Mário Roberto Maróstica Junior
• Support Opportunities: Regular Research Grants