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. 2018 Aug 9;55(9):3792–3798. doi: 10.1007/s13197-018-3311-y

Table 3.

ASP foam stability at alkaline pH and different salt concentrations

Time, min	Foam volume retention, %
	pH 8			pH 10
	0.00 M NaCl	0.03 M NaCl	0.25 M NaCl	0.00 M NaCl	0.03 M NaCl	0.25 M NaCl
2	67.96 ± 1.15^a	65.76 ± 0.45^a	65.83 ± 0.71^a	64.87 ± 0.45^a	65.77 ± 0.86^a	66.47 ± 1.03^a
5	52.72 ± 1.44^ab	51.89 ± 0.95^b	57.31 ± 1.86^a	52.84 ± 0.98^ab	54.98 ± 0.96^a	51.57 ± 0.62^b
10	49.06 ± 1.07^a	41.33 ± 1.11^b	40.85 ± 1.05^b	46.90 ± 0.47^b	50.46 ± 0.32^a	40.18 ± 1.04^c
15	45.10 ± 1.81^a	38.45 ± 1.26^b	36.51 ± 0.72^b	43.93 ± 0.67^a	37.48 ± 1.18^b	38.71 ± 1.03^b
30	41.12 ± 1.15^a	36.82 ± 0.25^b	35.54 ± 1.24^b	37.68 ± 0.16^a	35.75 ± 0.64^a	32.87 ± 1.03^b
45	39.54 ± 0.18^a	36.23 ± 0.27^b	34.15 ± 0.73^c	37.68 ± 0.16^a	34.99 ± 0.42^b	32.14 ± 0.00^c
60	38.42 ± 1.40^a	32.72 ± 0.40^b	29.43 ± 2.01^b	36.73 ± 1.17^a	31.27 ± 1.24^b	27.15 ± 0.00^c

^a–cMeans in a row, for a specific pH value, with same letter do not differ significantly (p ≥ 0.05)