Abstract
Neem (Azadirachta indica) leaves have been widely proposed as a traditional medicine and many bioactive compounds have been isolated and characterized. Taking into account the high variability of the constituents content, which is influenced by many factors such as the environment and the crop production technology, a proper and fast analytical method is important for monitoring the chemical composition of the product. Here, we report, for the first time, the NMR-based metabolic fingerprinting of Neem leaves extracts obtained using two different extraction techniques, namely microwave-assisted and conventional extractions. To optimize the recovery of a large range of metabolites, three extraction times (10, 30 and 60 minutes) and three solvents (methanol, chloroform and acetone) were used. The microwave-assisted extraction gave the highest recovery in the case of methanol and acetone, whereas conventional extraction was the best procedure for chloroform.
Keywords: Azadirachta indica, leaves extract, microwave-assisted extraction, Neem, NMR.
Graphical Abstract
Current Bioactive Compounds
Title:Optimization of the Microwave-Assisted Extraction of Azadirachta indica (Neem) Leaves Using NMR-based Metabolic Fingerprinting
Volume: 11 Issue: 3
Author(s): Simone Carradori, Luisa Mannina, Federica De Cosmi, Tamara Beccarini, Daniela Secci and Anatoly P. Sobolev
Affiliation:
Keywords: Azadirachta indica, leaves extract, microwave-assisted extraction, Neem, NMR.
Abstract: Neem (Azadirachta indica) leaves have been widely proposed as a traditional medicine and many bioactive compounds have been isolated and characterized. Taking into account the high variability of the constituents content, which is influenced by many factors such as the environment and the crop production technology, a proper and fast analytical method is important for monitoring the chemical composition of the product. Here, we report, for the first time, the NMR-based metabolic fingerprinting of Neem leaves extracts obtained using two different extraction techniques, namely microwave-assisted and conventional extractions. To optimize the recovery of a large range of metabolites, three extraction times (10, 30 and 60 minutes) and three solvents (methanol, chloroform and acetone) were used. The microwave-assisted extraction gave the highest recovery in the case of methanol and acetone, whereas conventional extraction was the best procedure for chloroform.
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Carradori Simone, Mannina Luisa, De Cosmi Federica, Beccarini Tamara, Secci Daniela and P. Sobolev Anatoly, Optimization of the Microwave-Assisted Extraction of Azadirachta indica (Neem) Leaves Using NMR-based Metabolic Fingerprinting, Current Bioactive Compounds 2015; 11 (3) . https://dx.doi.org/10.2174/1573407211666151002001919
DOI https://dx.doi.org/10.2174/1573407211666151002001919 |
Print ISSN 1573-4072 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6646 |
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