Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal Annales Bogorienses
Rizna Triana Dewi
Research Center for Chemistry, Indonesian Institute of Sciences (LIPI)

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

Found 2 Documents
Search

 1 
Identification of a New Compound as α-Glucosidase Inhibitor from Aspergillus aculeatus Rizna Triana Dewi; Asep Suparman; Hanny Mulyani; Akhmad Darmawan; Puspa Dewi N. Lotulung
Annales Bogorienses Vol. 20 No. 1 (2016): Annales Bogorienses
Publisher : National Research and Innovation Agency (BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/ann.bogor.2016.v20.n1.19-23

Abstract

Terestrial fungi are of great importance as potential sources of pharmaceutical agent. Aspergillus aculeatus, a fungus isolated from soil sample collected in Indonesia, was cultured in liquid media to investigate a novel compound as inhibitor -glucosidase. The mycelium extract of A. aculeatus shows potential activity against Saccharomyces cereviseae -glucosidase and mild activity against mammalian -glucosidase with IC50 values of 9.57 μg/mL and 470.76 mg/mL, respectively. Enzyme assay-guided fractionation of this extract afforded rubrofusarin (1). Rubrofusarin, a linear naphtho--pyrone, is a natural pigment from Aspergillus sp. Interestingly, compound 1 shows potential inhibitory activity against mammalian -glucosidase (IC50 of 92.7 μg/mL), but no to S. cereviseae -glucosidase. The results suggest that A. aculeatus is a promising natural source as a lead compound in the discovery of antidiabetic drug.
Bioactivities Screening of Indonesian Marine Bacteria Isolated from Sponges Nina Artanti; Faiza Maryani; Hanny Mulyani; Rizna Triana Dewi; Vienna Saraswati; Tutik Murniasih
Annales Bogorienses Vol. 20 No. 1 (2016): Annales Bogorienses
Publisher : National Research and Innovation Agency (BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/ann.bogor.2016.v20.n1.25-30

Abstract

Currently marine bacteria are considered as important source of natural products for drug discovery. The objective of this study is to conduct an in vitro bioactivities (antidiabetic, antioxidant and antibacterial) screening of 9 Indonesian marine bacteria isolated from sponges that belongs to the Research Center for Oceanography, Indonesian Institute of Sciences collections. The marine bacteria were cultured for 2 days in liquid medium containing yeast, peptone and sea salt under shaking condition and extracted with ethyl acetate. Antidiabetic was measured using inhibition of -glucosidase inhibitory activity method; antioxidant was measured using DPPH free radical scavenging activity method; antibacterial was tested using disc diffusion method. Screening results showed that at sample concentration of 200 μg/mL, there was significant -glucosidase inhibitory activity detected in the extracts of strain Sp 7.9 (84 % inhibition) and Sp 8.10 (75 % inhibition), however the antioxidant activities of these two strains were low only around 30 % inhibition, antioxidant activities of other strains were very low. Screening for antibacterial activities using 10 μL samples show that extract of strain Sp 8.5 was best for Staphylococcus aureus (14 mm inhibition); Sp 7.9, and Sp 8.5 for Bacillus subtilis (18 mm inhibition); Sp 8.10 for Escherichia coli (10 mm inhibition); Sp 8.9 and Sp 8.10 (10 mm inhibition) for Pseudomonas aeuriginosa. Based on these results marine bacteria strain Sp 7.9 and Sp 8.10 were selected to be used for further studies in the isolation of bioactive that has potential as antidiabetic and antibacterial. Results of molecular identification conducted by InaCC show that identity of both strains based on BLAST Homology using NCBI database were Bacillus thuringiensis.
Co-Authors Akhmad Darmawan Asep Suparman Faiza Maryani Hanny Mulyani Nina Artanti Puspa Dewi N. Lotulung Tutik Murniasih Vienna Saraswati