Table 1.

Summary of the label-free methods focusing on EGCG interactions with coatings (proteins, receptors) and cell types.

METHOD	TYPE OF ASSAY	COATING/PROTEIN/RECEPTOR	REF
SPR	Biomolecular	Chemokins	[83]
		67LR	[82,83]
		α-amylase	[83]
		p53	[85]
		STAT3	[86]
		HNE	[87]
OWLS	Biomolecular	PP and PPR	[16]
		mucin	[91,92]
GCI	Biomolecular	BSA	[55]
QCM	Biomolecular	BSA	[102]
QCM-D	Biomolecular	BSA	[103]
		Saliva	[104]
FTIR	Biomolecular	Human plasma	[107]
Holographic microscopy	Cellular (HeLa)	PPR	[13]
MALDI-MSI	Cellular (Tissue covered with 1,5 DAN matrix)	–	[121]
RWG	Biomolecular and cellular (HeLa)	PP and PPR	[16]
		Fibronectin	[124]
SPR	Biomolecular and cellular (HepG2)	67LR	[129]