Survival of Bifidobacterium longum LMG 13197 microencapsulated in Vegetal or Vegetal-inulin matrix in simulated gastrointestinal fluids and yoghurt

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Table 2 Changes in the colour of yoghurt samples containing B. longum LMG 13197 cells during storage at 4 °C for 6 weeks

Storage time (weeks)	Yoghurt samples
	Colour attributes
	Containing unencapsulated cells				Containing Vegetal encapsulated cells				Containing Vegetal-inulin encapsulated cells
	\({\text{L}}^{*}\)	\({\text{a}}^{*}\)	\({\text{b}}^{*}\)	\(\Delta {\text{E}}^{ *}\)	\({\text{L}}^{*}\)	\({\text{a}}^{*}\)	\({\text{b}}^{*}\)	\(\Delta {\text{E}}^{ *}\)	\({\text{L}}^{*}\)	\({\text{a}}^{*}\)	\({\text{b}}^{*}\)	\(\Delta {\text{E}}^{ *}\)
0	65.82 ± 0.14^a	−1.68 ± 1.10^c	−0.44 ± 0.02^a	–	63.75 ± 2.01^a	−1.30 ± 0.03^d	−1.02 ± 0.36^a	0.37	77.96 ± 1.68^b	−2.04 ± 0.18^c	3.04 ± 0.95^b	2.97
1	78.91 ± 0.51^b	−2.19 ± 0.02^bc	3.73 ± 0.24^b		78.93 ± 1.13^b	−2.28 ± 0.18^c	4.02 ± 0.77^b		68.74 ± 1.06^a	−1.11 ± 0.11^d	−0.18 ± 0.20^a
2	81.54 ± 0.90^c	−2.42 ± 0.12^ab	5.63 ± 0.64^cd		80.14 ± 2.16^b	−2.59 ± 0.31^b	4.31 ± 0.65^b		78.30 ± 0.96^b	−2.13 ± 0.17^c	3.31 ± 0.46^b
3	82.46 ± 0.24^d	−2.81 ± 0.06^ab	5.91 ± 0.18^d		86.47 ± 0.01^d	−3.11 ± 0.08^a	8.63 ± 0.07^e		86.20 ± 0.13^d	−3.18 ± 0.04^a	8.22 ± 0.13^d
4	82.20 ± 0.24^cd	−2.24 ± 0.03^bc	5.37 ± 0.20^c		83.77 ± 0.09^c	−2.42 ± 0.03^bc	6.48 ± 0.10^c		84.18 ± 0.32^c	−2.43 ± 0.03^b	6.43 ± 0.13^c
5	85.14 ± 0.26^e	−3.04 ± 0.02^a	8.33 ± 0.01^f		83.19 ± 0.26^c	−3.14 ± 0.13^a	6.95 ± 0.37^cd		86.22 ± 0.10^d	−3.20 ± 0.06^a	8.82 ± 0.10^d
6	84.51 ± 0.15^e	−3.12 ± 0.04^a	7.37 ± 0.14^e		84.88 ± 0.05^cd	−3.11 ± 0.08^a	7.42 ± 0.17^d		87.21 ± 0.08^d	−3.14 ± 0.01^a	8.61 ± 0.10^d

^aReported values are means of triplicate readings from three independent trials. Values with different letters within the same column differ significantly (p < 0.05)