Reagente Banana Eggplant Passion fruit Grape Result Starch Lugol ± ± - - purplish Lipophilics compounds Sudan III - ± ± - red Phenolics compounds FeCl3 ± ± ± ± brown Lignin Phloroglucinol ± ± ± ± red

Table 3: Histochemical tests for detection of plant substance