Evaluation of fruta-do-lobo (Solanum lycocarpum St. Hill) starch on the growth of probiotic strains

Author(s)

Aparecida Pereira, Ana Paula ^[1] ; Chatagnier Lauretti, Leonardo Borges ^[1] ; Alvarenga, Veronica Ortiz ^{[1, 2]} ; Paulino, Bruno Nicolau ^[3] ; Figueiredo Angolini, Celio Fernando ^{[1, 4]} ; Neri-Numa, Iramaia Angelica ^[1] ; Orlando, Eduardo Adilson ^[1] ; Lima Pallone, Juliana Azevedo ^[1] ; Sant'Ana, Anderson S. ^[1] ; Pastore, Glaucia Maria ^[1]

Affiliation

^[1] Univ Estadual Campinas, Fac Food Engn, Dept Food Sci, UNICAMP, Rua Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

^[2] Univ Fed Minas Gerais, Fac Pharm, Dept Food Sci, Belo Horizonte, MG - Brazil

^[3] Fed Univ Amazonas UFAM, Fac Pharmaceut Sci, Manaus, Amazonas - Brazil

^[4] Univ ABC UFABC, Ctr Nat & Human Sci, Santo Andre, SP - Brazil

• Document type: Journal article
• Source: Food Research International; v. 133, JUL 2020.
• Web of Science Citations: 0

Abstract

Fruta-do-lobo (Solanum lycocarpum St. Hill) is a native fruit commonly used in Brazilian folk medicine as a hypoglycemic agent. These properties are attributed to their starch, mainly its resistant fraction. Resistant starch has shown to increases the growth of Bifidobacterium and Lactobacillus in the gut, even though not being selective for these strains. In this scenario, this study aimed to investigate the potential prebiotic activity of fruta-do-lobo starch (FLS). FLS showed around 30% of resistant starch and their prebiotic potential was evaluated with five probiotic strains L. acidophilus (LA3 and LA5), L. casei (LC01) and B. animalis (BB12) and B. lactis (BLC1) in a concentration range of 1.0-2.0% of starch. In a preliminary screening, we evaluated, during 48 h, the viability of the starch with promoting growth agent. An increase in the growth of the probiotic strains tested was observed. We also evaluated the microorganism's metabolic activity by assessing the short-chain fatty acid (SCFA) production, using the best starch growth promotion conditions (2% of FLS and strains BLC1, LA5, and LC01). As expected, MRS and lactose were preferentially metabolized by BLC1, with the highest growth rates: 0.231 and 0.224 h(-1), respectively. However, for this strain, the FLS growth rate (0.222 h(-1)) was 65% higher than FOS (0.144 h(-1)). Also, for LA5 FLS promoted higher growth (0.150 h(-1)) than FOS (0.135 h(-1)). Additionally, FLS promoted acetate production. These data are promising and indicate that FLS may have prebiotic potential and more studies need to be done with pathogenic microorganisms. (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