Optimization and Characterization of Microwave-Assisted Hydro-Distillation Extraction of Essential Oils from Cinnamomum camphora Leaf and Recovery of Polyphenols from Extract Fluid.

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Ao ShangHua-Bin Li

Abstract

In this study, the efficiency of microwave-assisted hydro-distillation (MAHD) to extract essential oil from Cinnamomum camphora leaf, and the recovery of polyphenols from extract fluid were investigated. The effects of microwave power, liquid-to-material ratio, and extraction time on the extraction efficiency were studied by a single factor test as well as the response surface methodology (RSM) based on the central composite design method. The optimal extraction conditions were a microwave power of 786.27 W, liquid-to-material ratio of 7.47:1 mL/g, and extraction time of 35.57 min. The yield of essential oil was 3.26 ± 0.05% (w/w), and the recovery of polyphenols was 4.97 ± 0.02 mg gallic acid equivalent/g dry weight under the optimal conditions. Furthermore, the comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry (GC×GC-TOFMS) was used to characterize the essential oils of fresh and fallen leaves, and 159 individual compounds were tentatively identified, accounting for more than 89.68 and 87.88% of the total contents, respectively. The main ingredients include sabinene, l-β-pinene, β-myrcene, α-terpineol, 3-heptanone, and β-thujene, as well as δ-terpineol and 3-heptanone, which were first identifi...Continue Reading

References

Feb 1, 2013·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Michał BroklJean-François Focant
Nov 26, 2015·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Gui-Fang DengHua-Bin Li
Apr 5, 2016·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hao JiangYongde Yue
Sep 8, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ya LiHua-Bin Li
Oct 3, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Cai-Ning ZhaoHua-Bin Li
Oct 24, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Wenting WangYongyu Li
Jan 30, 2020·Revista Da Sociedade Brasileira De Medicina Tropical·Yite XuYing Wang

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