Table 4.

Relative sweetness of seven sweeteners calculated from concentration–response curves

Sample1	Regression equation	R2	Relative sweetness determined using 2-AFC2	Relative sweetness from literature
G-reb A	y = 22.174x − 0.213	0.9459	155	–
Reb A	y = 0.4791ln(x) + 2.3444	0.9688	235	227.3 (Gwak et al., 2012) 200-300 (Nabors et al., 2011)
Reb D	y = 33.871x − 0.2081	0.9747	239	221 (Prakash et al., 2014)
Reb M	y = 34.906x − 0.1632	0.94	263	250 (Prakash et al., 2014)
Sucral	y = 105.56x − 0.3852	0.9186	596	600 (Nabors, 2011)
Al	y = 0.1264x − 0.6866	0.9472	0.53	0.6 (Ko et al., 2020)
Mal	y = 0.1877x − 0.9338	0.9891	0.65	0.67 (Gwak et al., 2012) 0.72 (Schiffman et al., 1995)

¹See Table 1 for sample abbreviations

²The protocol developed by Kim et al. (2015) was applied for construction of dose–response curve using 2-AFC test