@article {675, title = {Comparison of Tongkat Ali Root Chemical Composition Extracted by Soxhlet, Conventional Steam and Microwave Assisted Extraction Techniques}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {August 2018}, pages = {916-920}, type = {Original Article}, chapter = {916}, abstract = {

Eurycoma longifolia Jack (Tongkat Ali) roots are used in traditional medicines for its wide range of biological effects. The process of extracting out this essential oil from the plant requires a delicate and efficient method. In this research the extract of the essential oil of Eurycoma longifolia\’s root using Microwave Assisted Extraction (MAE), Soxhlet Extraction and Conventional Steam Extraction (CSE) methods, is characterized to identify the components of essential oil extracted and then to compare the yield percentage and components of the extracts from both methods. The extract obtained was characterized using gas chromatography mass spectroscopy (GC-MS) by comparing the compositions of components present in commercial Tongkat Ali oil stored in the GC-MS library. The findings showed that the MAE gives a maximum yield percentage of 5\% with six chemical components extracted in 20 min while SE and CSE gives high yield percentage of 28.3\% in 3 h and 2.5 \% in 6 h respectively with only three chemical components extracted. Therefore, MAE is the optimum method for extracting essential oil from Tongkat Ali with a high quality.

}, keywords = {Conventional Steam Extraction (CSE), Essential oil, Eurycoma longifolia Jack, Microwave assisted extraction, Soxhlet Extraction}, doi = {10.5530/pj.2018.5.154}, author = {Ghazi Faisal Najmuldeen and Kamalanathan Narayanan and Deeveeya A/P Kirubananthan and Ghasak Ghazi Faisal} } @article {1488, title = {Chromatographic studies on Benincasa hispida (thunb.) Cogn. Seed extract scrutinized by HPLC and HPTLC}, journal = {Pharmacognosy journal}, volume = {6}, year = {2014}, month = {8th April 2014}, pages = {42-48}, type = {Original Article}, abstract = {

Background: Benincasa hispida (Thunb.) Cogn. is an extensive climbing annual herb in an agricultural country like India. Lupeol, a constituent of this species, has been reported to possess good amount of pharmacological potential. Objective: In the current studies, the research team focused on determining the percentage of the lupeol present in the extract of Benincasa hispida seeds by chromatographic techniques. Materials and Methods: Shade-dried seeds of Benincasa hispida were subjected to soxhlet extraction followed by scrutinization of the lupeol contents by HPTLC and HPLC methods after carrying out preliminary phytochemical screening for the constituents present in the extract. Results: The extraction yield was found to be 1.2\% (w/w). Phytochemical screening of the extract revealed the presence of carbohydrates, glycosides, alkaloids, fixed oils and fats, tannins phenolic compounds, steroids and flavonoids. The amount of lupeol present in the seeds extract was found to be 0.47\% w/w (HPTLC)and 6.85\% w/v (HPLC) by HPTLC quantification and HPLC analysis respectively. Research studies showed a peak which coincided with the peak of standard lupeol signifying the presence of lupeol in the extract. Conclusion: The extract contains significant amount of lupeol.

Key words:Benincasa hispida, Soxhlet extraction, HPLC, HPTLC, lupeol.

}, keywords = {Benincasa hispida, HPLC, HPTLC, Lupeol, Soxhlet Extraction}, author = {Hemant D. Une, and Gaurav M. Doshi} }