کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
603896 | 1454439 | 2014 | 8 صفحه PDF | دانلود رایگان |

• Biopolymers ratio and pH affected significantly the complex coacervates properties.
• Higher protein to polysaccharide ratio produced higher cells survivability.
• Higher protein to polysaccharide ratio produced higher viscoelastic moduli.
• Entrapped cells could be clearly identified in light and SEM micrographs.
Lactobacillus plantarum (L) was entrapped in whey protein isolate (W) and κ-carrageenan (K) complex coacervates (CC). The interaction window leading to W–L–K complexation at different pH values and components ratio was established by ζ-potential measurements and turbidimetric analysis. CC obtained at pH values of 4.0 and 4.5 and W:K weight ratio of 16.7:1 yielded cells entrapment efficiency of 39.6%, a significantly higher viability of 9.75 log cfu g−1 after exposure to low pH and of 9.66 log cfu g−1 after exposure to bile salts, than free cells (9.51 log cfu g−1and 5.93 log cfu g−1, respectively), with respect to an initial cells count of 9.78 log cfu g−1. Higher survivability of cells occurred in CC exhibiting a more compact microstructure and higher viscoelastic properties. Light and scanning electron micrographs clearly show that L. plantarum cells were effectively entrapped in the CC matrices.
Whey protein isolate-Lb. Plantarum-κ carrageenan complex coacervates.Figure optionsDownload as PowerPoint slide
Journal: Food Hydrocolloids - Volume 36, May 2014, Pages 181–188