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Which Fruits Have the Most Sugar?

CSEF · 2026 Biochemistry/ Molecular Biology (Junior Division)

Karina Rea

Overview

The purpose of my project is to find which fruit has the most sugar by measuring it with a refractometer (Sugar Brix). All ripe fruits that I used for my experiment are pineapple,grapes, golden kiwi, green kiwi, and strawberries. I hypothesize that pineapple due to its size would be sweeter meaning it would have higher amounts of sugar. I first started my experiment by cutting the fruits into small pieces. I then squeezed the fruits to get the juice and insert it into the refractometer while writing down the percentage of sugar of the fruits. I repeated this ten times, then divided it by ten to get roughly the exact amount of sugar in each fruit.

Competition history

  • CSEF 2026 Biochemistry/ Molecular Biology (Junior Division) · Entry J-04-01

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