Long-chain alkanol-alkyl carboxylic acid-based low-viscosity hydrophobic deep eutectic solvents for one-pot extraction of anthraquinones from Rhei Radix et Rhizoma
- Author:
Anqi HUANG
1
;
Wenwen DENG
;
Xiao LI
;
Qutong ZHENG
;
Xuanxuan WANG
;
Yuxiu XIAO
Author Information
1. Key Laboratory of Combinatorial Biosynthesis and Drug Discovery(Ministry of Education)^Wuhan University School of Pharmaceutical Sciences,Wuhan,430071,China
- Keywords:
Hydrophobic deep eutectic solvent;
Long-chain alkanol;
Long-chain alkyl carboxylic acid;
One-pot extraction;
Anthraquinone
- From:
Journal of Pharmaceutical Analysis
2022;12(1):87-95
- CountryChina
- Language:Chinese
-
Abstract:
Natural long-chain alkanol and alkyl carboxylic acid were used to prepare novel hydrophobic deep eutectic solvents(HDESs).These HDESs are liquid at room temperature and have low viscosity(＜12.26 mPa-s),low polarity(lower than that of methanol,ChCl-based deep eutectic solvents and other reported HDESs),and low density(＜0.928 g/mL).A simple one-pot method based on a novel HDES-water two-phase extraction system was constructed for the extraction of weak-polarity bioactive components,anthraquinones,from Rhei Radix et Rhizoma.This HDES-based new extraction method does not consume hazardous organic solvents and can obtain a total anthraquinone yield of 21.52 mg/g,which is close to that obtained by the Chinese pharmacopoeia method(21.22 mg/g)and considerably higher than those by other reported HDESs-based extraction methods(14.20-20.09 mg/g,p＜0.01).The high extraction yield can be mainly attributed to the severe destruction of the RRR cell walls by the extraction system and the excellent dissolving ability of novel HDESs for anthraquinones.
