ORCID Profile
0000-0002-5388-7667
Current Organisation
Indonesian Institute of Sciences
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Publisher: Journal of Biological Researches
Date: 18-12-2022
DOI: 10.23869/BPHJBR.28.1.202212
Abstract: Belimbing wuluh (Averrhoa bilimbi L.) is well known in Indonesia. This plant has wide medicinal properties, ranging from lowering cholesterol, uric acid, anti diabetic, antihypertensive, antioxidant, anti-inflammatory, cough medicine, thrush, and digestive disorders to treating acne. A number of studies have been conducted on the content of its fruit and leaves, but there is still a gap in the literature on the content of the flowers. This study was conducted to determine the effectiveness of the methanol extract of A. bilimbi flower as a natural antioxidant, to determine the chemical compounds contained in it by using GC-MS and to determine its potential utilization. Methanol extract of A. bilimbi crown and petals has the ability as an antioxidant with a very low category. The antioxidant activity of the crown flower is higher than that of the petals. The methanol extract of the crown and petals was dominated by Hexanedioic acid, γ-Sitosterol and Hexadecanoic acid compounds. Based on the compounds it contains, A. bilimbi extract can be used as an antimicrobial, anti diabetic, anticancer, lowering cholesterol levels and for maintaining skin health.
Publisher: Journal of Biological Researches
Date: 18-04-2021
DOI: 10.23869/BPHJBR.26.2.20215
Abstract: Dillenia serrata Thunb.is a member of the Dillenia clan which is endemic to Sulawesi. D. serrata fruit is a seasonal fruit and can be used as a cooking ingredient as a sour taste, raw material for several food products such as candied fruit and syrup, and has the potential to be processed into chips and jam. Traditionally, the leaves and bark of D. serrata are also used by the local community as a sprue medicine, fever, wound medicine, treating swelling or inflammation and treating vomiting of blood. It is believed that there are still many untapped benefits from this plant. This study was conducted to determine the effectiveness of D. serrata fruit extract as an antimicrobial that causes disease in humans, and to determine its effectiveness as an antioxidant. The antioxidant test was carried out using the DPPH method while the antimicrobial test was carried out by the agar diffusion method (Kirby-Bauer). The ripe Dillenia fruit was extracted using methanol, the extract was then diluted in various concentrations for the DPPH test The results showed that the D. serrata extract had the ability as an antioxidant. The antioxidant activity of fresh fruit extracts was higher than that of dried fruit extracts. D. serrata extract is effective in inhibiting the growth of Pseudomonas aeruginosa, Staphylococcus aureus, and Streptococcus mutans bacteria.
Publisher: Journal of Biological Researches
Date: 18-04-2021
DOI: 10.23869/BPHJBR.26.1.20215
Abstract: Dillenia serrata Thunb.is a member of the Dillenia clan which is endemic to Sulawesi. D. serrata fruit is a seasonal fruit and can be used as a cooking ingredient as a sour taste, raw material for several food products such as candied fruit and syrup, and has the potential to be processed into chips and jam. Traditionally, the leaves and bark of D. serrata are also used by the local community as a sprue medicine, fever, wound medicine, treating swelling or inflammation and treating vomiting of blood. It is believed that there are still many untapped benefits from this plant. This study was conducted to determine the effectiveness of D. serrata fruit extract as an antimicrobial that causes disease in humans, and to determine its effectiveness as an antioxidant. The antioxidant test was carried out using the DPPH method while the antimicrobial test was carried out by the agar diffusion method (Kirby-Bauer). The ripe Dillenia fruit was extracted using methanol, the extract was then diluted in various concentrations for the DPPH test. The results showed that the D. serrata extract had the ability as an antioxidant. The antioxidant activity of fresh fruit extracts was higher than that of dried fruit extracts. D. serrata extract is effective in inhibiting the growth of Pseudomonas aeruginosa, Staphylococcus aureus, and Streptococcus mutans bacteria.
Publisher: Universitas Gadjah Mada
Date: 20-09-2021
DOI: 10.22146/JTBB.65398
Abstract: Citarum watershed is a region of approximately 6,610 km2 in West Java, Indonesia. Citarum watershed has been degraded through historical land use and vegetation clearing. Rehabilitation of Citarum watershed uses Indigofera tinctoria L. that has value as a source of natural blue dye and is considered suitable for the region. Species distribution modelling and Habitat suitability index (SDM/HSI) were undertaken for I. tinctoria. The occurrence and environment data (bioclimatic, topography, and soil type) were input to HSI. Results of the Indigofera tinctoria habitat suitability model in Citarum watershed are very good (0.9–1) for some parts of the Citarum watershed. The medium and high suitability areas were respectively 4.49% and 4.37% of the area were located in the lowlands (Bekasi Regency and Karawang Regency). Prediction based on climate modelling for 2050 and 2070 estimated that the medium-high suitability area of Indigofera tinctoria will be reduced relative to the present.
No related grants have been discovered for I Putu Agus Hendra Wibawa.