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Spray-coating as a novel strategy to supplement broiler feed pellets with probiotic Lactobacillus salivarius NRRL B-30514

Wang, Anyi ; Lin, Jun ; Zhong, Qixin

Food science & technology, 2021-02, Vol.137, p.110419, Article 110419 [Periódico revisado por pares]

Elsevier Ltd

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  • Título:
    Spray-coating as a novel strategy to supplement broiler feed pellets with probiotic Lactobacillus salivarius NRRL B-30514
  • Autor: Wang, Anyi ; Lin, Jun ; Zhong, Qixin
  • Assuntos: Coating ; Drying ; Feed pellets ; Probiotics ; Protectant
  • É parte de: Food science & technology, 2021-02, Vol.137, p.110419, Article 110419
  • Descrição: Probiotics are potential alternatives to antibiotics in poultry production. In this work, supplementing probiotics on broiler feed pellets (BFPs) was studied for the first time by directly spraying a Lactobacillus salivarius NRRL B-30514 suspension with 10% w/v milk powder and 0, 1, and 5% w/v sucrose, followed by drying at 60 °C for 0–30 min. For suspensions without sucrose, no visual change of BFPs was noticed after spraying the cell suspension for up to 30 s; the coated BFPs dried for a longer time had a lower water activity and lower bacterial viability after preparation; and the coated BFPs dried for 30 min had about 5 log colony-forming unit per gram (CFU/g) viable L. salivarius after 30-day storage at room temperature. Under the optimized conditions (spraying for 30 s and drying at 60 °C for 30 min), supplementing 1% (w/v) sucrose in coating suspension further improved bacterial viability to 6.71 ± 0.14, 5.53 ± 0.24, and 4.28 ± 0.12 log CFU/g after 0, 30, and 730 days, respectively. Coatings slightly increased the diameter but showed no negative influence on the hardness, moisture sorption properties, and surface morphology of BFPs. This approach preventing thermal deactivation of probiotics during pelleting may be significant to supplementing probiotics to animals. •Spray-coating was applied to supplement Lactobacillus salivarius on broiler feed pellets (BFPs).•Spraying cell suspensions with milk powder for up to 30 s caused no visual change of BFPs.•Longer drying lowered water activity and initial viability but improved storage stability.•Adding 1% (w/v) sucrose in the coating suspension further improved probiotics viability.•Coatings had no adverse influence on the physical and mechanical properties of BFPs.
  • Editor: Elsevier Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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