EXTRACTION AND EVALUATION OF SOME NATURAL FLOWER PIGMENTS: AN IMPROVISED NATURAL INDICATOR FOR ACID-BASE TITRATION
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Abstract
A member of the different families, these flowers are most widely cultivated ornamental bulbous plants for its intriguing blooms across the world.
Objective: The current study focuses on the extraction and assessment of an acid-base indicator from a Tabernaemontana divaricata, Brugmansia suaveolens, Hibiscus rosa-sinensis (White) and Campsis grandiflora species that is environmentally beneficial and native to the area.
Methods: In the current investigation, acid-base titrations of four distinct types—strong acid against a strong base, strong acid against a weak base, weak acid against a strong base, and weak acid against a weak base—were conducted. Two bases (NaOH and NH4OH) and two acids (HCl and CH3COOH) were chosen for the acid-base titration. These bases and acids were utilised at a concentration of 0.1N.
Result: Natural indicators are promising when compared to commercially available synthetic acid-base indicators like methyl orange and phenolphthalein because they exhibit a sharp and dramatic colourb change near the neutralizing point.
Conclusion: The use of Tabernaemontana divaricata, Brugmansia suaveolens, Hibiscus rosa-sinensis (White) and Campsis grandiflora flower extract as an indicator in all kinds of acid base titrations is also determined to be advantageous due to its affordability, eco-friendliness
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Suchitra Sharma
Rakshpal College of Pharmacy, Bareilly U.P. (243001), India.
Amit Babu
Rakshpal College of Pharmacy, Bareilly U.P. (243001), India.
Vikas Saxena
Rakshpal College of Pharmacy, Bareilly U.P. (243001), India.