Regulation of Laminaria Polysaccharides with Different Degrees of Sulfation during the Growth of Calcium Oxalate Crystals and their Protective Effects on Renal Epithelial Cells

Table 1

Sulfation conditions of five SLPs with different -OSO₃^- content.

SLPs	Sulfation conditions			–OSO3^– content/%
	Reaction time/h	Sulfur trioxide-pyridine complex/g	Reaction temperature/°C
LP0	—	—	—	0.73
SLP1	0.5	1	40	8.58
SLP2	0.5	2	40	15.1
SLP3	2	5	60	22.8
SLP4	8	5	60	31.3