. 2020 Dec 31;31(2):298–303. doi: 10.4014/jmb.2011.11022

Table 3.

Free amino acid profiles of three L. lactis strains under citrate or glutamine pressure. (unit: pmol/μl)

	L. lactis HY7803			L. lactis ATCC7962			L. lactis IL1403

	Control	Citrate	Glutamine	Control	Citrate	Glutamine	Control	Citrate	Glutamine
Aspartic acid	26.70^bc	49.27^f	19.63^a	30.52^cd	31.52^cd	23.25^ab	39.03^e	73.55^g	32.81^d
Glutamic acid	83.16^de	108.42^f	60.65^a	80.61^cde	88.01^e	62.54^ab	75.15^cd	59.08^a	71.67^bc
Serine	80.54^e	99.08^f	66.12^bcd	58.97^b	69.82^cd	47.35^a	73.65^de	82.47^e	61.24^bc
Histidine	30.65^b	35.89^cd	29.49^b	31.82^bc	35.28^cd	21.66^a	30.71^b	39.27^d	25.22^a
Glycine	55.05^bc	68.52^d	43.19^a	52.07^b	60.65^c	42.31^a	60.80^c	68.55^d	50.83^b
Threonine	80.28^de	88.48^e	64.78^b	67.32^bc	76.60^cd	51.62^a	71.64^bcd	74.15^bcd	52.82^a
Arginine	16.02^d	20.20^e	13.07^b	11.95^b	13.26^bd	9.29^a	15.67^cd	13.94^bcd	8.83^a
Alanine	80.77^b	96.19^c	63.21^a	99.59^c	86.36^b	66.39^a	82.09^b	98.97^c	68.28^a
Tyrosine	51.33^b	61.97^c	40.77^a	52.06^b	60.00^c	37.67^a	52.55^b	50.78^b	40.24^a
Valine	69.27^cd	76.06^d	54.76^a	68.09^cd	71.90^cd	50.41^a	65.02^bc	70.96^cd	55.84^ab
Methionine	20.03^abc	25.60^d	16.72^a	26.56^d	22.68^cd	15.96^a	21.19^bc	23.99^cd	17.37^ab
Phenylalanine	76.14^b	111.51^d	60.66^a	77.17^bc	88.58^c	56.53^a	79.13^bc	77.68^bc	60.83^a
Isoleucine	53.20^d	63.76^e	41.61^abc	48.83^cd	53.74^d	36.06^a	46.60^bcd	46.71^bcd	39.83^ab
Leucine	115.86^cd	143.87^e	91.19^ab	133.64^de	116.84^cd	82.73^a	107.42^bc	111.41^c	91.17^ab
Lysine	42.99^de	46.54^ef	33.77^ab	43.35^de	36.32^bc	31.29^a	39.24^cd	50.47^f	36.01^bc
Proline	38.84^bc	35.50^bc	31.02^ab	39.74^c	39.05^bc	26.40^a	34.74^bc	41.11^c	33.35^abc

Lactococcus lactis inoculated into M17 broth supplemented with 0.25% glucose (control). Citrate (0.5% w/v) or glutamine (0.5% w/v) was used as external pressure. Different superscripts within a row denote a significant difference between mean values (p < 0.05) according to Duncan’s multiple range test.