AMB Express

Table 1 Composition of polyethylene glycol (PEG)–citrate aqueous two-phase systems (ATPS) used in this work for the primary recovery of microbial hyaluronic acid (HA)

From: Primary recovery of hyaluronic acid produced in Streptococcus equi subsp. zooepidemicus using PEG–citrate aqueous two-phase systems

PEG MW (g mol⁻¹)	V_R	TLL (% w/w)	PEG (% w/w)	Citrate (% w/w)
6000	1.00	23	12.13	9.91
	1.00	35	16.45	10.48
	1.00	42	19.56	10.87
8000	0.38	24	6.95	11.80
	0.38	36	8.20	14.36
	0.38	43	7.74	16.36
	1.00	24	10.79	9.75
	1.00	36	16.31	10.94
	1.00	43	19.41	11.51
	3.50	24	17.62	7.20
	3.50	36	24.50	6.90
	3.50	43	28.91	6.85

MW: molecular weight; V_R: volume ratio; TLL: tie-line length

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