Table 1 IC₅₀ values for the inhibition of aldose reductase and sorbitol dehydrogenase by selected tropical fruits

Apple (Malus domestica)

171.63 ± 5.42^a

56.52 ± 4.95^a

Banana (Musa paradisiaca)

159.16 ± 5.01^b

185.10 ± 13.40^b

Pawpaw (Carica papaya)

150.78 ± 4.53^b

46.30 ± 1.59^a

Watermelon (Citrullus lanatus)

189.13 ± 14.37^a

96.60 ± 7.04^c

Quercetin

153.85 ± 5.38^b

67.50 ± 0.83^a