Absorbance of Anti-Oxidants in a Fruit Juice Blend

Summary

The acai berry has been reported to have the highest levels of antioxidant anthocyanins, measured as oxygen radical absorption capacity (ORAC), of any fruit or vegetable. Anthocyanins are natural pigments that not only give the acai berry its unique color, but also its remarkable anti-oxidant powers. In this application note, we measured the absorbance of a nutrient-dense juice blend comprising acai berries and other fruits.

Introduction

Absorbance measurements are a simple and non-destructive way to measure concentration. The amount of absorbance is proportional to the concentration of the sample. Often, components of a mixture, such as a fruit juice blend containing acai berries, can be identified as individual peaks. In the case of the acai berry, the main color pigment has a strong absorption band at 530 nm.