Probiotic Lactobacillus paracasei IMPC 2.1 strain delivered by ready-to-eat swordfish fillets colonizes the human gut after alternate-day supplementation

Quality of ready‐to‐eat swordfish fillets inoculated with Lactobacillus paracasei IMPC 2.1

“…This may indicate differential absorption of the dressing oils in marinated swordfish fillets, as it seems that the probiotic brining step reduces the quantity of oil incorporated into fish flesh and limits the growth of alterative microorganisms, including LAB, that can be responsible for defects in the product. This bio‐preservative effect of the strain was also observed in our previous studies . Specifically, cabbage fermented with the probiotic L. paracasei IMPC 2.1 showed improved sensory quality attributes (e.g.…”

“…firmness and crunchiness) compared with non‐inoculated cabbage, resulting in texture differences between the two products . In the case of swordfish fillets, probiotic colonization hampered the growth of other LAB in the C‐RTE product, thus reducing the risk of spoilage …”

“…Marinated fillets (MF) were prepared by Copaim S.p.A. (Albinia, Tuscany, Italy) from frozen whole swordfish ( Xiphias gladius ), as previously described . A standard aqueous marinade was used: NaCl at 30 g kg −1 (w/vol), acidified with vinegar, lactic acid, and citrus juice to a final pH of 4.0.…”

“…This bio-preservative effect of the strain was also observed in our previous studies. 3,14 Specifically, cabbage fermented with the probiotic L. paracasei IMPC 2.1 showed improved sensory quality attributes (e.g. firmness and crunchiness) compared with non-inoculated cabbage, resulting in texture differences between the two products.…”

“…lactis strains in marinated anchovies, demonstrating that fish can be considered a suitable matrix, sustaining the viability of LAB, particularly probiotic strains. In addition, Valerio et al 14 demonstrated that ready-to-eat (RTE) swordfish (Xiphias gladius) fillets inoculated with L. paracasei IMPC 2.1 allowed the probiotic to transiently colonize the gut of eight healthy human volunteers in an alternate-day feeding trial. The enrolled subjects showed good tolerance of the probiotic product and the strain was recovered in the faeces of all subjects at concentrations ranging from 6.15 to 7.47 log colony-forming units (CFU) g −1 .…”