Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Kefarmasian Indonesia Advance Sustainable Science, Engineering and Technology (ASSET)
ABDUL ROHMAN
UNIVERSITAS GADJAH MADA
Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology Public Health

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Penangkapan Radikal 2,2-Difenil-1-Pikril Hidrazil oleh Ekstrak Buah Psidium guajava. L dan Averrhoa carambola L. ABDUL ROHMAN; SUGENG RIYANTO; RIZKA DAHLIYANTI; DIMAS BAGUS PRATOMO
JURNAL ILMU KEFARMASIAN INDONESIA Vol 7 No 1 (2009): JIFI
Publisher : Fakultas Farmasi Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1035.587 KB)

Abstract

Two fruits, Guava (Psidium guajava L.) and Carambola (Averrhoa cammbola L.), Which are frequently consumed by Indonesian people, have been evaluated for its activities as 2,2-diphenyl-1-picrylhidrazyl (DPPH) radical scavenging. The fruits were macerated, evaporated, dissolved in Water, partitioned with chloroform and then with aethyl acetate to afford methanolic extract and fractions of chloroform, aethyl acetate, and Water respectively. Total phenolic and total flavonoid contents of each extract and fraction Were determined by spectrophotometric technique and used to evaluate the correlation between the natural chemical contents and their activities as DPPH radical scavengers. The results showed that extracts and fractions of R guajava L. fruit have more ability to scavenge 2,2-diphenyl- 1-picrylhidrazyl (DPPH) radical than those of A. carambola L. The total phenolic and total flavonoid contents of extracts and fractions of R guajava L. fruit are also higher than those of A. cammbola L.
Altitude-dependent Variation in Antibacterial Properties of Red Ginger (Zingiber officinale var. rubrum): Implications for Natural Anti-Salmonella Agents Dyah Ayu Widyastuti; Tri Rini Nuringtyas; Abdul Rohman; Djoko Santosa
Advance Sustainable Science Engineering and Technology Vol. 8 No. 2 (2026): February-April
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i2.2781

Abstract

Red ginger contains diverse bioactive compounds with strong antioxidant and antibacterial activities. This study investigated the influence of growth location on the anti-Salmonella activity of red ginger extracts from seven regions in Java, Indonesia. The fractions were analyzed for total phenolic and flavonoid contents, as well as antioxidant capacity using DPPH and FRAP assays. Antibacterial activity was assessed against Salmonella using the Kirby-Bauer disk diffusion method. Results showed that methanol and ethyl acetate fractions exhibited the highest phenolic and flavonoid contents, while the chloroform fraction demonstrated the strongest radical scavenging activity. Extracts from Bumiaji and Lendah displayed the most potent anti-Salmonella activity (inhibition zone: 10.08 to 18.00 mm). These findings highlight that altitude and solvent polarity influence red ginger bioactivity, supporting its potential as a natural antibacterial source.
Co-Authors DIMAS BAGUS PRATOMO Djoko Santosa Dyah Ayu Widyastuti RIZKA DAHLIYANTI SUGENG RIYANTO Tri Rini Nuringtyas