Ultrasonic Assisted Extraction on Phenolic and Flavonoid Content from Phyllanthus niruri Plant

Optimization of Ultrasonic-Assisted Extraction of Phenolic Compounds from Apples

In order to optimize conditions for the extraction of polyphenols from apples, peel and flesh of apples were subjected to an extraction process with different solvents consisting of various ratios of methanol and water (40, 60, 80 %), 100 % methanol, or with methanol acidified with hydrochloric acid (0.1 %). Extractions were performed using an ultrasonic bath with time periods from 5 to 15 min....

Total Phenolic Content, Total Flavonoid Content and Radical Scavenging Activity from Zingiber zerumbet Rhizome using Subcritical Water Extraction

Subcritical water extraction (SWE) is an alternative technique that implement water as a solvent. The objective of this work was to compare the efficiency of SWE in temperature range from 100ºC to 180ºC at extraction times ranging from 5 to 25 minutes with an ethanolic soxhlet extraction in terms of total phenolic content (TPC), total flavonoid content (TFC) and radical scavenging activity (RSA...

Total Flavonoid Determination for the Quality Control of Aqueous Extractives from Phyllanthus niruri L

The purpose of this study has been the development of an adequate methodology for the quality control of Phyllanthus niruri aqueous extracts. The assay method was tested, with various modifications, to determine its suitability for the quantitative determination of total flavonoids within the crude drug raw material and aqueous extracts. The assay technique for such chemical group is based on t...

Optimization of Ultrasonic-Assisted Extraction of Flavonoid Compounds and Antioxidants from Alfalfa Using Response Surface Method.

Ultrasonic-assisted extraction (UAE) was used to extract flavonoid-enriched antioxidants from alfalfa aerial part. Response surface methodology (RSM), based on a four-factor, five-level central composite design (CCD), was employed to obtain the optimal extraction parameters, in which the flavonoid content was maximum and the antioxidant activity of the extracts was strongest. Radical scavenging...

Isolation and characterisation of medicinal compounds from Phyllanthus Niruri