Aqueous Biphasic Systems Based on Tetrabutylammonium Bromide for Extraction and Determination of Azorubine, Allura Red, Sunset Yellow, Tartrazine and Fast Green in Food Samples

Smirnova, S.V.; Gorbovskaia, A.V.; Vershinina, Y.S.; Apyari, V.V.; Proskurnin, M.A.

Авторы: Smirnova Svetlana V., Gorbovskaia Anastasia V., Vershinina Yulia S., Apyari Vladimir V., Proskurnin Mikhail A.
Журнал: Molecules
Том: 30
Номер: 24
Год издания: 2025
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
Номер статьи: 4769
DOI: 10.3390/molecules30244769
Аннотация: Aqueous biphasic systems (ABSs) based on tetrabutylammonium bromide (TBABr) and potassium thiocyanate or citrate (K3Cit) were proposed as “green” tools for liquid–liquid microextraction of Azorubine, Allura Red, Sunset Yellow, Tartrazine and Fast Green followed by spectrophotometric determination. The dye extraction into the water-saturated tetrabutylammonium thiocyanate phase, which separates from water when mixing aqueous solutions of TBABr and KSCN, depends on the hydrophobicity of dyes. Only Azorubine is extracted quantitatively at HCl concentration ≥ 0.05 mol L−1, with an equimolar TBABr/KSCN ratio and total concentration of 0.4 mol L−1 in less than 1 min. To estimate the hydrophobicity and identify factors affecting the distribution of dyes in ABSs, the experimental 1-octanol-water distribution coefficients of the dyes were determined. In contrast, all the dyes studied are quantitatively extracted into the TBABr–K3Cit–H2O ABS regardless of their hydrophobicity. The effects of pH, concentration of phase-forming components, extraction/centrifugation time and other factors were investigated for both ABSs. The linearity ranges and detection limits were 0.05–2.60 mg L−1 and 0.006–0.02 mg L−1, respectively. The proposed procedures were applied for the determination of dyes in food samples.
Добавил в систему: Смирнова Светлана Валерьевна

	ИСТИНА	Войти в систему Регистрация
	Интеллектуальная Система Тематического Исследования НАукометрических данных
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

Интеллектуальная Система Тематического Исследования НАукометрических данных

Aqueous Biphasic Systems Based on Tetrabutylammonium Bromide for Extraction and Determination of Azorubine, Allura Red, Sunset Yellow, Tartrazine and Fast Green in Food Samplesстатья

Прикрепленные файлы