@article {258, title = {Effect of Gamma Irradiation on Suruhan (Peperomia pellucida (L.) Kunth) Herb Powder}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {February 2017}, pages = {239-243}, type = {Original Article}, chapter = {239}, abstract = {

Introduction: Peperomia pellucida (L.) Kunth is known as a raw material for herbal medicine; Preservation of herbs powder by gamma irradiation is reported to be able to keep products free from contamination. Methods: This study aims to evaluate the effect of gamma irradiation (0; 2.5; 5; 7.5; and 10 kGy) on the ACE inhibitory activity (ACE Kit \– WST test kit method), antioxidant activity (DPPH radical scavenging method), total phenolic content (colorimetric method using Folin-Ciocalteu reagent), total flavonoid content (colorimetric method using AlCl3 and sodium acetate), and TLC profiling (silica gel F254 as the stationary phase and dichlormethane:methanol [92:8] as the mobile phase) of suruhan herb powder. Results: Results showed that the 2.5 kGy irradiation dose gave the smallest alteration in ACE inhibitory activity compared to others irradiated doses. Furthermore, the 5 and 7.5 kGy dose didn\’t cause significant change (p\>0.05) on antioxidant activity, total phenolic content, and total flavonoid content. Antioxidant activity was found to correlate with the total phenolic content but not with the total flavonoid content. Conclusion: Based on these finding, it is concluded that gamma irradiation can be used as a preservation method for P. pellucida herb powder.

}, keywords = {Angiotensin converting enzyme, antioxidant activity, Peperomia pellucida, total flavonoid, total phenolic}, doi = {10.5530/pj.2017.2.40}, url = {http://phcogj.com/fulltext/307}, author = {Mubarika Sekarsari Yusuf and Intan Wulandari and Lili Amelia and Katrin and Arikadia Noviani and Rissyelly and Abdul Mun{\textquoteright}im} } @article {261, title = {Inhibition Activity of Angiotensin Converting Enzyme (ACE) and Determination of Total Phenolic and Flavonoid Compound from Bitter Melon Leaves (Momordica charantia L.)}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {February 2017}, pages = {252-256}, type = {Original Article}, chapter = {252}, abstract = {

Introduction: Hypertension is a leading problem in Indonesia, because of the high prevalence and the long term effect. Bitter melon leaves (Momordica charantia L.) has been traditionally utilized to treat hypertension, yet not many studies explained the antihypertension effect of this plant. Methods: This study was conducted to test the benefit of bitter melon leaves as antihypertension using angiotensin converting enzyme inhibition activity in 80\% ethanolic extract and its fractions (n-hexane, ethyl acetate, and n-butanol) using ACE kit-WST (Dojindo, Japan). Then the antihypertension activity was associated with the phenolic content which was expressed in gallic acid equivalent (GAE) and total flavonoid in quercetin equivalent (QE). Results: Result of the study showed that the IC50 value obtained from the ethanolic extract to inhibit ACE activity was 7.52 \μg/mL and the highest inhibition obtained in ethyl acetate fraction with IC50 value was 4,29 \μg/mL. Phenolic total and flavonoid total determination also showed that the highest content obtained in ethyl acetate fraction with 18.752 mg GAE/gr extract and 8.310 mg QE/gr extract, respectively. Conclusion: According to the study, it could be concluded that bitter melon (Momordica charantia L.) leaves provide inhibition activity against Angiotensin Converting Enzyme (ACE) and chemical compounds that were expected to play an active role in inhibiting ACE were flavonoid and tannin.

}, keywords = {Angiotensin converting enzyme, antihypertension, Momordica charantia L., total flavonoid., total phenolic}, doi = {10.5530/pj.2017.2.43}, url = {http://phcogj.com/fulltext/310}, author = {Putri Lestari and Katrin and Rissyelly and Putu Gita Maya Widyaswari Mahayasih} }