Cited by 78Chemical and Physical Properties in Aqueous SolutionsPhytochemistry and biological activity of medicinal plantsPhase Equilibria and Thermodynamics

Extraction and purification of anthraquinones derivatives from Aloe vera L. using alcohol/salt aqueous two-phase system

Tan, Zhi-jian, Li, Fen-fang, Xu, Xue-lei·2013·Bioprocess and Biosystems Engineering

Abstract

An alcohol/salt aqueous two-phase system (ATPS) composed of 1-propanol and (NH4)2SO4 was employed to purify anthraquinones (AQs) extracted from Aloe vera L. The main influencing system parameters such as type of alcohol, type and concentration of salt, temperature and pH were investigated in detail. Under the optimal extraction conditions, AQs can be extracted into alcohol-rich phase with high extraction efficiency, meanwhile majority polysaccharides, proteins, mineral substances and other impurities were extracted into salt-rich phase. Partitioning of AQs is dependent on hydrophobic interaction, hydrogen bond interaction, and salting-out effect in ATPS. Temperature also played a great role in the partitioning. After ATPS extraction, alcohol can be recycled by evaporation; moreover, salt can be recycled by dilution crystallization method. Compared with other liquid-liquid extractions, this alcohol/salt system is much simpler, lower in cost with easier recovery of phase-forming components, which has the potential scale-up in down-processing of active ingredients in plant.

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Crossref · 10.1007/s00449-012-0864-4

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  • The significant strength of two-phase separation has been the simplicity of the equipment used, while its main challenges have been slow segregation and re-extraction from the polymer phase.

    “While the method's significant strength has been the simplicity of the equipment used [140], its main challenges have been the slow segregation and re-extraction from the polymer phase [142].”
  • Using 1-propanol and (NH4)2SO4 to purify anthraquinones extracted from Aloe vera, a phase ratio of 0.34 achieved a partition coefficient of 64 and an extraction efficiency of 96%.

    “The latter used 1-propanol and (NH 4 ) 2 SO 4 to purify anthraquinones extracted from Aloe vera.A phase ratio of 0. 34 (17.84/2666concentration of alcohol/salt % w/w), achieved a partition coefficient of 64, and an extraction efficiency of 96% were achieved [142].”
  • A low cost, low viscosity, easy recoverable system using an alcohol/salt two-phase system has been proposed.

    “However, a low cost, low viscosity, easy recoverable system using an alcohol/salt two-phase system has also been proposed [142].”

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Authors
Tan, Z.-J., Li, F.-F., & Xu, X.-L.
Affiliations
Central South University (CN)
Venue
Bioprocess and Biosystems Engineering
Published
2012-12-04
Volume
36
Issue
8
Pages
1105-1113
ISSN
  • 1615-7591 (ISSN-L)
  • 1615-7605
OpenAlex
W2053901327
Cited by
78
References
25
Citations by year
2026: 2 · 2025: 1 · 2024: 5 · 2023: 5 · 2022: 7 · 2021: 9 · 2020: 7 · 2019: 4 · 2018: 6 · 2017: 9 · 2016: 6 · 2015: 7 · 2014: 9 · 2013: 1
FWCI
4.86
Type
journal article
Language
en
Open access
closed
Locations
  • Bioprocess and Biosystems Engineering (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Chemical Engineering › Filtration and Separation › Chemical and Physical Properties in Aqueous Solutions
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Phytochemistry and biological activity of medicinal plants
  • Physical Sciences › Engineering › Biomedical Engineering › Phase Equilibria and Thermodynamics
Keywords
anthraquinones, Aloe vera, aqueous two-phase extraction, 1-propanol, ammonium sulfate, salting-out, hydrophobic interactions, hydrogen bonding, partitioning, salt recycling
MeSH terms
Ethanol, Methanol, Alcohols, Aloe, Anthraquinones, Crystallization, Emodin, Hydrogen Bonding, Hydrogen-Ion Concentration, Plant Extracts, Salts, Temperature, Thermodynamics, Viscosity, Hydrophobic and Hydrophilic Interactions, Liquid-Liquid Extraction

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