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Open AccessArticle

Bioactivity and Sensory Properties of Probiotic Yogurt Fortified with Apple Pomace Flour

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Institute of General and Physical Chemistry, Studentski trg 12/V, 11158 Belgrade, Serbia
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Faculty of Biology, University of Belgrade, Studentski trg 16, 11158 Belgrade, Serbia
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Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080 Belgrade, Serbia
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Authors to whom correspondence should be addressed.
Foods 2020, 9(6), 763; https://doi.org/10.3390/foods9060763
Received: 26 May 2020 / Revised: 3 June 2020 / Accepted: 5 June 2020 / Published: 10 June 2020
(This article belongs to the Section Dairy)
To meet the demand for new functional foods in line with the trend of sustainable development, a novel probiotic yogurt fortified with 1%, 3%, and 5% apple pomace flour (APF) added immediately after inoculation with Lactobacillus acidophilus, Streptococcus thermophilus, and Bifidobacterium bifidum was developed. Upon fermentation in the presence of APF, a number of probiotic strains remained within the required range, while the syneresis of enriched yogurts was reduced up to 1.8 times in comparison to the control. Supernatants (i.e., extracted whey) obtained from yogurts with 1%, 3%, and 5% APF respectively had 1.4-, 1.8-, and 2.3-fold higher total phenolic content (TPC) than the control, 3.3-, 4.7-, and 8.0-fold higher radical scavenging (DPPH), and 1.3-, 1.6-, and 1.7-fold higher reducing activity (FRAP). Also, probiotic yogurt supernatants (3% and 5%) inhibited colon cancer cells’ viability (HCT 116, 12% and 17%; SW-620, 13% and 19%, respectively). The highest firmness, cohesiveness, and viscosity index values, and the highest scores for color and taste, were obtained for yogurt with 3% APF, indicating that this is the optimal APF amount for the production of novel yogurt with functional properties. View Full-Text
Keywords: apple pomace flour; probiotic yogurt; sensory properties; antioxidant activity; cytotoxicity apple pomace flour; probiotic yogurt; sensory properties; antioxidant activity; cytotoxicity
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Jovanović, M.; Petrović, M.; Miočinović, J.; Zlatanović, S.; Laličić Petronijević, J.; Mitić-Ćulafić, D.; Gorjanović, S. Bioactivity and Sensory Properties of Probiotic Yogurt Fortified with Apple Pomace Flour. Foods 2020, 9, 763.

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