Skip to main content

View full-text article in PMC

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

Table 2.

ASP foam stability at acidic pH and different salt concentrations

Time, min	Foam volume retention (%)
	pH 2			pH 4			pH 6
	0.00 M NaCl	0.03 M NaCl	0.25 M NaCl	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	69.36 ± 1.85^b	73.43 ± 0.25^a	69.82 ± 1.14^ab	71.36 ± 1.44^a	60.56 ± 2.38^b	69.98 ± 0.29^a	69.41 ± 0.14^a	64.02 ± 1.10^b	67.96 ± 0.16^a
5	57.85 ± 1.48^a	59.37 ± 0.28^a	51.82 ± 1.14^b	58.95 ± 1.19^a	47.86 ± 0.98^b	50.73 ± 0.44^b	54.98 ± 0.90^a	48.44 ± 1.98^b	47.72 ± 0.98^b
10	51.83 ± 1.48^b	55.50 ± 1.20^a	46.11 ± 0.57^c	55.54 ± 0.69^a	42.57 ± 0.35^b	41.82 ± 1.39^b	46.68 ± 1.71^a	40.81 ± 0.42^b	33.18 ± 1.28^c
15	50.00 ± 0.37^a	49.89 ± 0.42^a	37.00 ± 0.56^b	53.22 ± 1.29^a	39.16 ± 0.95^b	40.60 ± 1.46^b	43.42 ± 0.64^a	37.89 ± 0.01^b	30.40 ± 0.59^c
30	46.59 ± 0.74^a	43.25 ± 0.59^a	34.50 ± 2.12^b	51.17 ± 1.16^a	35.76 ± 1.90^b	38.45 ± 1.59^b	38.04 ± 1.26^a	36.36 ± 0.33^a	27.19 ± 0.96^b
45	44.76 ± 0.37^a	37.98 ± 0.08^b	27.33 ± 1.31^c	49.01 ± 0.33^a	33.36 ± 2.12^b	34.63 ± 1.60^b	35.87 ± 1.70^a	34.55 ± 0.82^a	25.83 ± 0.82^b
60	44.63 ± 0.18^a	34.75 ± 1.33^b	22.97 ± 2.78^c	47.17 ± 1.39^a	33.36 ± 2.12^b	28.51 ± 1.97^b	35.87 ± 1.70^a	34.43 ± 0.64^a	24.43 ± 1.97^b

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