A probiotic nutraceutical based on functionalised rice bran (RB) supplemented with lingonberry (Vaccinium vitis-idaeaL.) pulp (LP) at various levels (10-50g/100gd. W.) was developed. Prior to immobilisation of lactic acid bacteria (LAB) cells, RB-LP matrix was structured by ultrasound (US) (850kHz; power 160W) for 20min at 40 °C. Xanthan gum and sodium alginate were used for the stabilisation of RB-LP matrix. Survival and fermentative activity of the immobilised LAB cells was studied by monitoring pH, cell number, antimicrobial activity, lactic acid and acetic acid production. US treatment increased by 17.5% soluble dietary fibre (SDS) contents in RB but reduced on average by 49.9% hyperoside, quercetin, quercitrin and coumaric acid contents in LP material. RB substrate supplemented with LP (20-50g/100g d.w.) resulted in higher antimicrobial activity against Escherichia coli, Salmonellatyphimurium and Staphylococcusaureus for Lactobacillusbrevis, and against Bacillus cereus and Staphylococcusaureus for Pediococcus acidilactici....

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