@article {259, title = {Effect of Gamma Irradiation on Angiotensin Converting Enzyme Inhibition, Antioxidant Activity, Total Phenolic Compound and Total Flavonoid of Peperomia pellucida Herbs Extract}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {February 2017}, pages = {244-248}, type = {Original Article}, chapter = {244}, abstract = {

Introduction: Peperomia pellucida L. Kunth has been reported to have some biological activities such as antihypertensive and antioxidants. Herbal materials susceptible to contamination during processing and storage which can shortens their shelf life. Gamma-irradiation has been used as a method for preservation. Methods: This research aimed to analyze the effect of gamma-irradiation on inhibition activity of angiotensin converting enzyme (ACE), antioxidant activity, total phenol content, total flavonoid, and thin layer chromatography profiles of P. pellucida L. Herbs extract. The extract was irradiated with 60Co gamma rays at 2.5; 5; 7.5; dan 10 kGy. Results: Irradiation up to 10 kGy did not change ACE inhibitory activity and TLC profile. No significant differences were noted in the inhibition activity of ACE and the type of chromatogram profiles between non-irradiated extract and irradiated extracts up to a dose of 10 kGy while total flavonoids showed a significant decrease. In addition, total phenolic content and antioxidant activity showed a significant increase of extracts were irradiated up to 5 kGy and decrease at dose 7,5 kGy and 10 kGy. Gamma-irradiation up to 10 kGy didn\’t affect the activity of ACEinhibitor in-vitro while significant difference (P \<0.05) of antioxidant activity, total flavonoids and phenolic content of the extract P. Pellucida. Conclusion: In conclusion, gamma - irradiation can be used as a preservation method for ethanol extract P. Pellucida L. Kunth herbs.

}, keywords = {ACE, Antioxidant, Extract, Gamma-irradiation, Peperomia pellucida, Total flavonoids, total phenolic}, doi = {10.5530/pj.2017.2.41}, url = {http://phcogj.com/fulltext/308}, author = {Anies Monica Adhitia and Alisa Nur Octaviani and Rissyelly and Katrin Basah and Abdul Mun{\textquoteright}im} } @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} }