Effect of different matrices on probiotic resistance to invitro simulated gastrointestinal conditions

Author(s)

Casarotti, Sabrina N. ^[1] ; Todorov, Svetoslav D. ^[2] ; Penna, Ana Lucia B. ^[1]

Affiliation

^[1] UNESP Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Dept Engn & Tecnol Alimentos, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

^[2] Univ Fed Vicosa, Dept Vet, BR-36570000 Vicosa, MG - Brazil

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF DAIRY TECHNOLOGY; v. 68, n. 4, p. 595-601, NOV 2015.
• Web of Science Citations: 3

Abstract

In this study, we evaluated the effect of different matrices (MRS, milk and milk with inulin) on the tolerance of probiotic strains (Lactobacillus acidophilus La-5 and Bifidobacterium animalis subsp. lactis BB-12) to simulated conditions similar to those found in the gastrointestinal tract. Both probiotic strains demonstrated a significantly lower viability after exposure to in vitro gastric and intestinal conditions, and B.animalis subsp. lactis BB-12 showed higher survival during the test compared to L.acidophilus La-5 in all tested matrices. Milk and inulin protected probiotics from in vitro gastrointestinal stress. These results suggest that it is critical to formulate the food matrix to be used as probiotic carrier. (AU)

• FAPESP's process: 09/12808-7 - Effect of dairy starter cultures association on the technological quality of fermented milks
• Grantee: Sabrina Neves Casarotti
• Support Opportunities: Scholarships in Brazil - Doctorate