From:  Microbial quality and sensory evaluation of probiotic yogurt fortified with functional seeds

 Viable counts (mean ± SD) (× 108 CFU/mL) of L. rhamnosus GR-1 in probiotic yogurt treatments after 0, 2, 4, and 6 h of fermentation and 1, 15, and 30 days of storage.

Treatment0 h2 h4 h6 hp-value1 day15 days30 daysp-value
11.35 ± 0.171.74 ± 1.682.09 ± 0.342.95 ± 1.810.7371.56 ± 0.523.26 ± 1.042.11 ± 0.480.344
22.28 ± 0.302.76 ± 0.721.95 ± 0.144.31 ± 2.180.2332.22 ± 0.114.23 ± 1.206.35 ± 1.410.055
31.79 ± 0.761.08 ± 0.072.27 ± 1.732.64 ± 0.410.5541.78 ± 0.493.70 ± 1.593.09 ± 0.930.370
42.32 ± 1.02b2.49 ± 1.64b2.56 ± 0.02b9.24 ± 0.23a0.0062.56 ± 1.933.87 ± 1.663.79 ± 0.790.248

A one-way repeated measures ANOVA and Fisher’s LSD test were used to analyze statistically significant differences between mean microbial counts (mean ± SD) during 6 h of fermentation and 30 days of refrigerated storage in four probiotic yogurt treatments. A p-value of < 0.05 was statistically significant. In a row, mean microbial count values for each treatment followed by the same superscript letter (a)–(b) are not significantly different (p > 0.05). Treatment 1: 100% (w/v) cows’ milk; Treatment 2: 100% (w/v) cows’ milk with the addition of 2% (w/v) of flax seeds; Treatment 3: 100% (w/v) cows’ milk with the addition of 2% (w/v) hemp seeds; Treatment 4: 100% (w/v) cows’ milk with the addition of 2% (w/v) chia seeds. CFU: colony-forming units; L. rhamnosus: Lacticaseibacillus rhamnosus; ANOVA: analysis of variance; LSD: least significant difference; w/v: weight per volume.