Evaluation of Selected Natural Plant-Derived Dyes for Histological Staining Of Plant Tissues in Practical Biology Instruction

This research work is concerned with Exploring the Potential of Zobo (Hibiscus sabdariffa), Henna (Lawsonia inermis) and Teak (Tectona grandis) as Natural plant dyes as a sustainable alternative to Synthetic dyes in teaching and learning practical Biology in Kogi State College of Education, Ankpa. Experimental and survey design was used. Three basic research questions were formulated and answered for the purpose of this research work. The population of the study comprises of all the academic staff of Biology Education department making a total of 14 respondents. Extract from the plants were used for the experiment and questionnaire was used to test the perception of lecturers on the use of plant based dye for practical Biology instructions. Data analyzed showed that that extracts can be used as a dye in place of synthetic dyes. Synthetic dye stains faster than the plants extracts when compared. The knowledge of using plant based dyes as an alternative to synthetic dye is limited as it has never been used in conducting plant histological practical in the department. It was recommended that the plant extracts should be used as a dye in place of synthetic dyes and experiment with different extraction methods to maximize colour yield and minimize waste should be carried out.