@article {1649, title = {Pharmacognostic Specifications, RP-HPLC Analysis of Chlorogenic Acid Content and Antioxidant Activity of Morus alba Linn. Leaves in Thailand}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {September 2021}, pages = {1186-1194}, type = {Research Article}, chapter = {1186}, abstract = {

Background: Morus alba Linn. leaves have been widely used as herbal medicine with therapeutics and contain chlorogenic acid as a bioactive phenolic compound. Objective: The present study aimed to conduct the pharmacognostic specifications of M. alba leaves and the method validation for quantification of chlorogenic acid content. Materials and Methods: Macroscopic- and microscopic characteristics, physicochemical parameters combined with quantification of chlorogenic acid in M. alba leaves collected from 15 sources throughout Thailand and their antioxidant activity were reported in this study. Results: The physicochemical parameters of M. alba leaves were determined by indicating water content (7.97 {\textpm} 0.35\%), loss on drying (4.55 {\textpm} 0.21\%), total ash (14.38 {\textpm} 0.25\%), acid-insoluble ash (6.21 {\textpm} 0.37\%), water-extractive value (16.14 {\textpm} 0.50\%) and ethanol-extractive value (8.61 {\textpm} 0.39\%). In addition, the chlorogenic acid contents in M. alba leaves were found to be 0.4159 {\textpm} 0.1958 g/100g dry weight. The ethanolic leaf extracts exhibited their antioxidant activity with half-maximal inhibitory concentration (IC50) values (326.09{\textendash}467.55 μg/mL). Conclusion: This study showed the establishment of pharmacognostic study of M. alba leaves and validation of the reversed-phase high-performance liquid chromatography (RPHPLC) quantitative analysis of their chlorogenic acid contents, which are applicable to be a reference for quality control and standardization of M. alba leaves.

}, keywords = {antioxidant activity, Chlorogenic acid, Morus alba, Pharmacognostic specification, Quality control}, doi = {10.5530/pj.2021.13.152}, author = {Phimkun Aiyarakanchanakun and Chanida Palanuvej and Nijsiri Ruangrungsi and Anuchit Phanumartwiwath} } @article {825, title = {Simultaneously Extraction of Caffeine and Chlorogenic Acid from Coffea canephora Bean using Natural Deep Eutectic Solvent-Based Ultrasonic Assisted Extraction}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {February 2019}, pages = {267-271}, type = {Original Article}, chapter = {267}, abstract = {

Background: NADES is an alternative solvent in the extraction of metabolites from plants which has many environmental benefits, such as low toxicity, biodegradability, can dissolve polar and non-polar compounds, low costs and simple preparation. Objective: This study aims to determine the effect of natural deep eutectic solvent-based ultrasonic-assisted extraction (NADES-UAE) on enrichment of caffeine and chlorogenic acid in extract from green coffee beans (Coffea canephora). Methods: The powders were extracted using NADES-UAE method in several types of extraction condition, including the composition of NADES, water addition in NADES and extraction time. Caffeine and chlorogenic acid content were analyzed using HPLC, reverse phase system and C18 ODS-3 column. Results: The highest of caffeine and chlorogenic acid content was respectively, 7.89 mg/g and 28.62 mg/g (composition of NADES betaine: sorbitol [1:1.2] ratio and NADES-water addition [1:2] ratio for 30 min). Conclusion: This research showed that the composition of NADES, extraction time and water addition are important parameter in extracting caffeine and chlorogenic acid content in green coffee beans.

}, keywords = {Caffeine, Chlorogenic acid, Coffea canephora, Natural deep eutectic solvent, Ultrasonic assisted extraction}, doi = {10.5530/pj.2019.11.41}, author = {Adisya Miftah Syakfanaya and Fadlina Chany Saputri and Abdul Mun{\textquoteright}im} }