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All Journal Jurnal Matematika Sains dan Teknologi Gunung Djati Conference Series
Rina Ratnasih Irwanto
Institut Teknologi Bandung
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Other

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EKSPLORASI HABITAT BAKUNG PUTIH (Crinum Asiaticum L.) UNTUK MENDAPATKAN KADAR GALANTAMIN PADA KETINGGIAN TEMPAT BERBEDA Dewi Estu; Rina Ratnasih Irwanto
Jurnal Matematika Sains dan Teknologi Vol. 9 No. 2 (2008)
Publisher : LPPM Universitas Terbuka

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Abstract

White lily, Crinum asiaticum L (Amaryllidaceae) produce secondary metabolite called galantamine which has been developed to cure alzheimer desease. The purpose of this research was to explore the habitat of C. asiaticum which produces a high yield of galantamine. The bulb of C. asiaticum from four different locations which has altitudes ranging from 0-1250 meters above sea level was taken. Those locations were Santolo Beach-Garut, Cijambe-Subang, Dago-Bandung and Cikole-Lembang. The bulb was extracted and galantamine concentration was determined using HPLC (High Performance Liquid Chromatography). Parameters such as pH, humidity, soil organic content were also measured. The results showed that the bulb taken from Cikole had the highest galantaminecontent (63.592 mg/g). The results also showed positive correlation between altitude and galantamine content (r=0.843). However, galantamine content had no correlation with the size and weight of C. asiaticum bulb (r=0.0583). In relation to environmental condition, there was positive correlation between soil organic with galantamine content (r=0.862). Further, nitrogen concentration tends to affect the production of galantamine (r=0.848).
Potensi Lepraria sp. sebagai Bioindikator Pencemaran Timbal (Pb) di Kota Bandung Muhammad Fauzan Akbar; Iyan Robiansyah; Rina Ratnasih Irwanto
Gunung Djati Conference Series Vol. 6 (2021): Seminar Nasional Biologi (SEMABIO) 6 Tahun 2021
Publisher : UIN Sunan Gunung Djati Bandung

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Bioindicator organism, such as lichens, a symbiosis between fungi and green algae or cyanobacteria, can be used for monitoring air pollution level in urban areas, such as Bandung City. This research aims to assess the potential of lichen Lepraria sp. as bioindicator by measuring the concentration of Pb accumulated in Lepraria sp. on the years of 2006 and 2020. Measurements in 2006 were conducted in three locations in Bandung, while measurement in 2020 was conducted only in one location, Jl. W. R. Supratman. Traffic volumes and microclimate conditions (humidity, air temperature, and light intensity) were also measured. Our results showed that Pb concentration measured in 2006 were higher along Jl. W. R. Supratman than Jl. Nyland, and the lowest is in Panatayuda Park. Traffic volume was considered to be the highest factor affecting Pb concentrations (P<0,01, r=0,823), while microclimate was found to have no effect. Measurements in 2020, which focused on Jl. W. R. Supratman, displayed a significant decrease of Pb concentrations (P<0,05). It was discovered that Pb concentrations decreased despite an increase of traffic volume. The decrease of airborne Pb concentrations, as the effect of leaded petrol ban in Indonesia, was presumed to be the cause of Pb concentration decrease in Lepraria sp. To conclude, the ability of Lepraria sp. to accumulate Pb and reflects change in airborne pollutant levels shows that Lepraria sp. has the potential to be utilized as a Pb pollution bioindicator.
Co-Authors Dewi Estu Iyan Robiansyah Muhammad Fauzan Akbar