* Test beverages were as follows: (i) 0.44 g aspartame, (ii) 0.63 g monk fruit extract (50% mogroside V), (iii) 0.33 g  stevia (Steviol glycoside, Rebaudioside A) and (iv) 65 g sucrose in 500 ml water.

A pilot test was carried out before the study to confirm that the test beverages were deemed perceptibly similar in their sweetness intensity.