首页|Spray-coating as a novel strategy to supplement broiler feed pellets with probiotic Lactobacillus salivarius NRRL B-30514
Spray-coating as a novel strategy to supplement broiler feed pellets with probiotic Lactobacillus salivarius NRRL B-30514
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NSTL
Elsevier
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 degrees 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 degrees 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.
ProbioticsFeed pelletsCoatingDryingProtectant
Wang, Anyi、Lin, Jun、Zhong, Qixin
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Univ Tennessee, Dept Food Sci, 2510 River Dr, Knoxville, TN 37996 USA
Univ Tennessee, Dept Anim Sci, Knoxville, TN 37996 USA
NSTL
Elsevier
