A simple and rapid spectrophotometric method has been developed to determine the quality of roselle (Hibiscus sabdariffa). The absorbance at 530 nm (coloring intensity) and the ratio between the absorbances at 380 and 530 nm (degradation index) of its 5...
Faculty of Pharmaceutical Sciences, Chulalongkorn University
Sukwattanasinit, Tasamaporn; Burana-osot, Jankana; and Sotanaphun, Uthai
"Simple and Rapid Spectrophotometric Method for Quality Determination of Roselle (Hibiscus sabdariffa),"
The Thai Journal of Pharmaceutical Sciences: Vol. 40:
4, Article 5.
Available at: https://digital.car.chula.ac.th/tjps/vol40/iss4/5