Study on the PEG-based microwave-assisted extraction of flavonoid compounds from persimmon leaves

2012 ◽  
Vol 35 (23) ◽  
pp. 3412-3420 ◽  
Author(s):  
Lei Liu ◽  
Rui-Lin Liu ◽  
Jing Zhang ◽  
Zhi-Qi Zhang
Keyword(s):  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Flavonoid Compounds ◽  
Assisted Extraction

scholarly journals Ultrasound-microwave assisted extraction of flavonoid compounds from Eucommia ulmoides leaves and an evaluation of their antioxidant and antibacterial activities

2020 ◽  
Vol 72 (2) ◽  
pp. 211-221
Author(s):  
Xiang Wang ◽  
Mi-Jun Peng ◽  
Zhi-Hong Wang ◽  
Qiu-Ling Yang ◽  
Sheng Peng
Keyword(s):  
Antibacterial Activities ◽  
Eucommia Ulmoides ◽  
Microwave Assisted Extraction ◽  
Ultrasound Extraction ◽  
Microwave Assisted ◽  
Flavonoid Compounds ◽  
Assisted Extraction ◽  
Ic50 Values ◽  
Burman Design

Ultrasound/microwave assisted extraction (UMAE) of flavonoid compounds from Eucommia ulmoides leaves was studied and the extraction conditions were optimized by the Plackett-Burman design (PBD) method combined with the Box-Behnken design (BBD). The antioxidant and antibacterial activities of the flavonoid extract were investigated. The results show that the optimal conditions were an ethanol concentration of 41%, microwave power of 178 W and an ultrasound extraction time of 26 min. Under these conditions, the yield of the flavonoid compounds was 2.454%?0.230%, which was higher than that after direct solvent extraction, ultrasound extraction and microwave extraction. The results of in vitro antioxidant assays showed that the flavonoid extract had scavenging capacity for DPPH, ABTS and hydroxyl radicals, with corresponding IC50 values of 30.76 mg/L, 21.09 mg/L, 248.4 mg/L, respectively. In addition, this extract exhibited strong antibacterial activity on Escherichia coli, Staphylococcus aureus and Salmonella typhimurium.

Orthogonal test in optimizing microwave-assisted extraction process of magnolin from Magnoliae Flos

2010 ◽  
Vol 30 (5) ◽  
pp. 567-568
Author(s):  
Xiao-li LI ◽  
Ming-yuan ZHANG ◽  
Wei-quan ZHAO ◽  
Man Li ◽  
Hai-ying TENG ◽  
...  
Keyword(s):  
Extraction Process ◽  
Orthogonal Test ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction

Optimization of the Microwave-Assisted Extraction of Azadirachta indica (Neem) Leaves Using NMR-based Metabolic Fingerprinting

2015 ◽  
Vol 11 (3) ◽  
pp. 142-145 ◽  
Author(s):  
Simone Carradori ◽  
Luisa Mannina ◽  
Federica De Cosmi ◽  
Tamara Beccarini ◽  
Daniela Secci ◽  
...  
Keyword(s):  
Azadirachta Indica ◽  
Metabolic Fingerprinting ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Neem Leaves
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