Application of Tamarind Waste Extracts to Improve the Antioxidant Properties of Tamarind Nectars

Autor(es)

Souza, Danilo Santos ^[1] ; Pimentel Souza, Jane Delane Reis ^[1] ; Coutinho, Janclei Pereira ^[2] ; Ferreira da Silveira, Tayse Ferreira ^[1] ; Ballus, Cristiano Augusto ^[3] ; Teixeira Filho, Jose ^[4] ; Andre Bolini, Helena Maria ^[5] ; Godoy, Helena Teixeira ^[1]

Afiliação do(s) autor(es)

^[1] State Univ Campinas UNICAMP, Fac Food Engn, Dept Food Sci, R Monteiro Lobato 80, Cidade Univ, BR-13083852 Campinas, SP - Brazil

^[2] Univ Estadual Santa Cruz, Dept Exact & Technol Sci, Rodovia BR-415, Km 16, Salobrinho S-N, BR-45662000 Ilheus, BA - Brazil

^[3] Univ Fed Santa Maria, Ctr Agr Sci, Dept Food Sci & Technol, Av Roraima 1000, BR-97105900 Santa Maria, RS - Brazil

^[4] State Univ Campinas UNICAMP, Fac Agr Engn, Inst Geociencias, Rua Candido Rondon 501, Cidade Universitiria, BR-13083875 Campinas, SP - Brazil

^[5] State Univ Campinas UNICAMP, Fac Food Engn, Dept Food & Nutr, R Monteiro Lobato 80, Cidade Univ, BR-13083852 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PLANT FOODS FOR HUMAN NUTRITION; v. 75, n. 1, p. 70-75, MAR 2020.
• Citações Web of Science: 0

Resumo

Tamarind fruits are consumed worldwide and their seeds have an underexploited potential. We assessed the effect of the addition of a freeze-dried aqueous of extract tamarind seed (FAE) at three concentration levels (0.3, 1.15 and 2%) on the antioxidant capacity (DPPH, ABTS, FRAP and ORAC) and concentrations of total phenolic compounds in tamarind pulp. Conditions used to prepare the aqueous extracts were established using multivariate optimization. Moreover, nectars prepared from pulps combined with FAE were subjected to sensory tests. Tamarind fruits from three geographic regions in Brazil (Minas Gerais, Sao Paulo and Bahia) that were harvested in 2013 and 2014 were used in the study. Generally, the freeze-dried aqueous extracts increased the concentrations of antioxidants in the pulp. The results revealed a positive correlation between the FAE concentration in the pulp and the antioxidant capacity of all samples, particularly samples from Bahia and Minas Gerais, which presented an increase of up to 1,942% in the ABTS method when 2% FAE was incorporated into the pulp, from approximately 40.1 to 209.1 mM(Trolox)/g(dw) and 13.4 to 143.4 mM(Trolox)/g(dw), respectively. Sensory tests indicated the satisfactory acceptance and non-distinction between nectar samples to which FAE was or was not added when the FAE concentration was less than 2.3g(FAE)/L, regardless of the geographic origin of the samples. (AU)

• Processo FAPESP: 12/06806-4 - Caracterização e avaliação da atividade biológica e antioxidante da polpa liofilizada enriquecida com compostos bioativos da semente de tamarindo (Tamarindus indica)
• Beneficiário: Danilo Santos Souza
• Modalidade de apoio: Bolsas no Brasil - Doutorado