Laser-Induced Fluorescene Spectroscopy (LIFS) - a Non-Destructive Method to Detect Tissue Browning
2003
Wulf, Janina S. | Herppich, Werner B. | Geyer, Martin | Zude, Manuela
Laser-induced fluorescence spectroscopy (LIFS) was non-destructively applied on sound and bruised apples. Furthermore, the technique was tested to measure surface browning of freshly cut banana slices, which were treated with different anti-oxidative additives. Changes in the apple fruit composition after bruising become visible in intensity variations of the blue-green and red fluorescence. Tissue browning of banana slices was detected by changes in the blue-green fluorescence. Such effects were obtained before the symptoms could be visually noticed. Results of the present study point out the potential of LIFS to non-destructively detect physiological changes of fruit composition during the entire processing chain of fresh fruit.
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