Extraction Experiments Using Commercially Available Spices

Autor:	Dante Gilbert L. de Leon, Armando M. Guidote, Maricar O. Ribo-Ramos
Rok vydání:	2010
Předmět:	Kerosene Materials science Food color Aqueous solution Chromatography Extraction (chemistry) Solubility
Zdroj:	KIMIKA. 23:32-37
ISSN:	2508-0911 0115-2130
Popis:	Safe and cost-effective experiments were designed for high school students to enhance their laboratory skills and knowledge on polarity and separation of mixtures. Annatto, Spanish paprika and turmeric were extracted yielding red-orange, light red-orange and yellow color, respectively. These were combined with a blue aqueous solution made from food color resulting to green mixtures. These were all extracted with kerosene or oil/kerosene. The non-polar solutes for each mixtures combined with the kerosene or oil/kerosene layer, making the polar phase blue again. Students gained a better understanding of the concepts as shown in their laboratory report and test results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::33c9d848ebc3af0f9678019afda3cb6a https://doi.org/10.26534/kimika.v23i1.32-37 Zobrazit plný text záznamu