Chemical methods developed by Lane and Eynon, Knight and Allen, and colorimetric method by Dubois et al were used to determine reducing sugar in eight fruit samples. The methods showed detection limits as follows: Lane and Eynon (1ppt); Knight and Allen (0.1ppt); and Dubois et al ( 0.05). These indicate that the three methods can generally be applied for analysis of reducing sugar in fruits and other food materials low in sugar content. However, Dubois et al method is not recommended for non-climacteric fruits.

Keywords: Low sugar content, Fruits, Coefficient of variation, Anova, Detection limit

Plant Product Research Journal Vol. 12 2008: pp. 19-22