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EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Published by Universitas Pakuan
ISSN : 14419447     EISSN : 26864894     DOI : 10.33751
Core Subject : Science, Education, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Mathematics
Ekologia adalah jurnal ilmiah yang diterbitkan untuk mengakomodasi tulisan hasil penelitian bagi sivitas akademika Universitas Pakuan khususnya dan instansi lain di luar Universitas Pakuan pada umumnya. Jurnal ini memuat artikel primer yang bersumber langsung dari hasil penelitian Ilmu Dasar dan Lingkungan Hidup. Ekologia diterbitkan dua kali dalam setahun yaitu pada bulan April dan Oktober oleh Fakultas Matematika dan Ilmu Pengetahuan Alam-Universitas Pakuan. Semoga Jurnal ini bermanfaat bagi perkembangan hasanah ilmu pengetahuan.
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Articles 12 Documents
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Search results for , issue "Vol 20, No 1 (2020): EKOLOGIA : JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP" : 12 Documents clear
KAJIAN ETNOBOTANI BUDAYA NGALAKSA DI KECAMATAN RANCAKALONG KABUPATEN SUMEDANG Yuna Islamiati; Nisrina Khairun Nisa; Restu Anugrah; Triska Rosma; Tri Cahyono
EKOLOGIA Vol 20, No 1 (2020): EKOLOGIA : JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (539.652 KB) | DOI: 10.33751/ekologia.v20i1.1981

Abstract

The Rancakalong People still hold tight the local culture. Generally, the Rancakalong people are living as farmer. This matter makes the Rancakalong people do the culture of Ngalaksa. This cultural purpose is gratitude of prosperity throught the rice harvest symbolized as Dewi Sri. The purpose of this research is to examine ethnobotany of plants that used in Ngalaksa culture at Rancakalong Sub-district. The method of this research uses descriptive-exploration with the technique of data collection is Pusposive Random Sampling and Snowball Sampling. Ngalaksa culture relates with ethnobotany studies because it uses rice (Oryza sativa L.) as the main plant and other plants such as kecombrang (Etlingera elatior (Jack) R.M.Sm), congkok (Curculigo orchioides Gaertn), cariang (Colocasia esculenta (L.) Schott) and coconut (Cocos nucifera L.). These plants are needed in large quantities and cannot be replace by other plants.
VALIDASI DAN ANALISIS KADAR AKRILAMIDA PADA KOPI TUNGKAL DENGAN METODE KROMATOGRAFI CAIR KINERJA TINGGI (KCKT) Harmita Swandi; Armini Hadriyati; Mukhlis Sanuddin
EKOLOGIA Vol 20, No 1 (2020): EKOLOGIA : JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.002 KB) | DOI: 10.33751/ekologia.v20i1.1983

Abstract

Acrylamide is a chemical compound found in roasted coffe at temperature above 120⁰C. potential to couse cancer in humans. The coffee used by processed at home in the village of Betara sub-district, Tanjung Jabung Barat, Kuala Tungkal, Jambi. The purpose of this study is to compare acrylamide content traditional coffee powder with the high performance liquid chromatography method (HPLC). The phase of motion used acetonitril : phosphate acid (80:20 v/v), using C18 or oktadesil silica (ODS) with size 250 nm × 4,6 mm,injection volume 20 μl, detector genesys 10S UV-Vis at wavelength 203 nm. Acrylamide is ground coffee was identified at retention time (tR) ± 5,825 minute. This method is proven valid with linearity y = 20717x + 28752, correlation coefficient (r) = 0,998%, the limit of detection 0, 32109 ppm and the limit of quantitation 1,07031 ppm, orecision with 2%. Acrylamide levels in coffee powder 1 to 4 respectively are 72,065 μg/g sample (1), 66,922 μg/g sample (2), 60,215 μg/g sample (3), and 61,422 μg/g sample (4). The four coffee samples showed that the acrylamide levels of each sample exceeded the safe limit of consumption of acrylamide released by FDA is 2 μg/g.
AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL BIJI KAPULAGA JAWA (Amomum compactum Soland. ex Maton) TERHADAP Streptococcus pyogenes Oom Komala; . Ismanto; Muhammad Alan Maulana
EKOLOGIA Vol 20, No 1 (2020): EKOLOGIA : JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (155.499 KB) | DOI: 10.33751/ekologia.v20i1.1985

Abstract

Streptococcus pyogenes is one of the pathogenic bacteria that causes pharyngitis. Natural treatment to overcome these problems is to use cardamom seeds. The purpose of this study was to test the antibacterial activity, determine the concentration of inhibitory zone and phytochemical compounds from  ethanol 96% extract of Java cardamom seeds (Amomum compactum Soland. Ex Maton) against Streptococcus pyogenes. The method is used   solid dilution and paper disc diffusion method. The solid dilution method is used for the Minimum Inhibitory Concentration (MIC) test with a concentration of 1.25%, 2.5%, 5% and 7.5% while the paper diffusion method is used for the Inhibition zone Diameter (IZD)  using five treatments namely three concentrations of ethanol 96% extract of Java cardamom seeds (7.5%, 10% and 12%), one positive control of amoxicillin 0.01 mg/mL and one negative control of sterile distilled water. IZD data were  analyzed using ANOVA with a confidence level of 95% and α = 0.05 and Duncan's further tests to determine differences between treatments. The results showed that the MIC  was at a concentration of 7.5% while for the IZD test which had the highest activity there was a concentration of 12% with an average inhibition diameter of 12.03 ± 0.14 mm. In addition, ethanol 96% extract of Java cardamom seeds contain alkaloids, flavonoids, terpenoids and tannins which function in antibacterial activity.
KEANEKARAGAMAN JENIS TUMBUHAN PAKU (PTERIDOPHYTA) DI KAWASAN HUTAN TUMBANG MANGGU, KECAMATAN SANAMAN MANTIKEI, KABUPATEN KATINGAN, KALIMANTAN TENGAH Sri Hartini
EKOLOGIA Vol 20, No 1 (2020): EKOLOGIA : JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekologia.v20i1.1978

Abstract

Research on the diversity of ferns in the forests of Tumbang Manggu, Sub-district Sanaman Mantikei, Central Kalimantan, has been done. The study was conducted in March – April 2016  by using explorative methods. The results show, at least 28 species of ferns were found in the forest area, of which 16 species are terrestrial ferns and 12 species of epiphytic ferns. These species are included in 22 genera and 14 families. Huperzia and Pyrrosia are most abundant, each genus were consists of 3 species. The most rich families in term number of species are Polypodiaceae and Lycopodiaceae, with 6 species and 4 species respectively. Abundance of each species in the region was different, Blechnum orientale L., Dicranopteris linearis (Burm. f.) Underw., Lycopodiella cernua (L.) Pic. Serm., and Vittaria scolopendrina (Bory) Schkuhr ex Thwaites were found in large quantities and spread almost all over the region. Asplenium nidus L., Drynaria quercifolia (L.) J. Sm., Stenochlaena palustris (Burm. f.) Bedd., Lygodium circinatum (Burm. f.) Sw., Pyrrosia lanceolata (L.) Farw., Nephrolepis falcata (Cav.) C. Chr. and Vittaria ensiformis Sw. were found in considerable numbers. Asplenium pellucidum Lam., Athyrium bantamense Milde, Helminthostachys zeylanica (L.) Hook. and Tectaria crenata Cav. were found in small quantities and only in certain places. Local communities around the region have not much utilizing the ferns yet.
EVALUASI KINERJA METHYL DIETHANOL AMINE (MDEA) DALAM PENYERAPAN KANDUNGAN H2S PADA PROSES PENGOLAHAN GAS ALAM . Sutanto; Ade Heri Mulyati; . Hermanto
EKOLOGIA Vol 20, No 1 (2020): EKOLOGIA : JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (379.302 KB) | DOI: 10.33751/ekologia.v20i1.1986

Abstract

Drilling natural gas contains water vapor (H2O) and contaminant gases such as CO2 and H2S which must be removed because it reduced the calorie value of the product. H2S gas is also corrosive, easily damaging equipment so that it increased maintenance costs. The process of removing CO2 and H2S gas uses MDEA (methyl diethanolamine). This study aims to determine the optimal concentration and flow rate of absorbent methyl diethanolamine (MDEA) to absorb H2S in the plant I gas flow in Energy Equity Epic (Sengkang) Pty.Ltd. The study was carried out with a steady MDEA mix absorbent flow rate (50% pure amine and 50% demineralization water) fixed at 13 US Gallons per minute flowing continuously at the upper absorber inlet, sour gas flow rate, at the bottom of the absorber inlet with variations in the flow gas namely 7,9,11,13,15,17 MMSCFD and is contacted with amine solution counter-current. Purified natural gas (sweet gas) produced from the top absorber column outlet with an H2S content below 10 ppm. The results showed that the greater the flow rate of gas inlet, the greater the acid gas absorbed. The  amount  of gas  entering and  exiting gas follows the  equation        y = 0.003 x - 2.2537. The ability of the amine solution to absorb H2S follows the logarithmic equation y = 0.167 ln (x) + 101.02 with a value of R = 0.9857, y is H2S absorbed by the amine solution and x is the H2S rate.
TIPOLOGI, DINAMIKA, DAN POTENSI BENCANA ALAM DI KAWASAN PESISIR KABUPATEN TULUNGAGUNG Anggoro Putranto
EKOLOGIA Vol 20, No 1 (2020): EKOLOGIA : JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.601 KB) | DOI: 10.33751/ekologia.v20i1.1979

Abstract

This study aims to determine the typology, dynamics and potential of natural disasters in the coastal area of Tulungagung Regency, East Java Province. The results of this study indicate that the typology in the coastal area of Tuluagung Regency consists of structurally shaped coast, wave erosion coast, marine deposition coast, land erosion coast, sub aerial deposition coast and several forms of typology impact from human activities utilizing coastal resources. The form of dynamics that develop in the coastal area of Tulungagung Regency is generally influenced by environmental conditions, factors of sea water waves and human activities in meeting the needs of life as well as for meeting the means of tourism development. While the potential for disasters in the coastal areas of Tulungagung Regency such as tsunami, abrasion, and sea water intrusion.
EVALUASI KINERJA METHYL DIETHANOL AMINE (MDEA) DALAM PENYERAPAN KANDUNGAN H2S PADA PROSES PENGOLAHAN GAS ALAM . Sutanto; Ade Heri Mulyati; . Hermanto
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Vol 20, No 1 (2020): Ekologia : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekologia.v20i1.1986

Abstract

Drilling natural gas contains water vapor (H2O) and contaminant gases such as CO2 and H2S which must be removed because it reduced the calorie value of the product. H2S gas is also corrosive, easily damaging equipment so that it increased maintenance costs. The process of removing CO2 and H2S gas uses MDEA (methyl diethanolamine). This study aims to determine the optimal concentration and flow rate of absorbent methyl diethanolamine (MDEA) to absorb H2S in the plant I gas flow in Energy Equity Epic (Sengkang) Pty.Ltd. The study was carried out with a steady MDEA mix absorbent flow rate (50% pure amine and 50% demineralization water) fixed at 13 US Gallons per minute flowing continuously at the upper absorber inlet, sour gas flow rate, at the bottom of the absorber inlet with variations in the flow gas namely 7,9,11,13,15,17 MMSCFD and is contacted with amine solution counter-current. Purified natural gas (sweet gas) produced from the top absorber column outlet with an H2S content below 10 ppm. The results showed that the greater the flow rate of gas inlet, the greater the acid gas absorbed. The  amount  of gas  entering and  exiting gas follows the  equation        y = 0.003 x - 2.2537. The ability of the amine solution to absorb H2S follows the logarithmic equation y = 0.167 ln (x) + 101.02 with a value of R = 0.9857, y is H2S absorbed by the amine solution and x is the H2S rate.
TIPOLOGI, DINAMIKA, DAN POTENSI BENCANA ALAM DI KAWASAN PESISIR KABUPATEN TULUNGAGUNG Anggoro Putranto
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Vol 20, No 1 (2020): Ekologia : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekologia.v20i1.1979

Abstract

This study aims to determine the typology, dynamics and potential of natural disasters in the coastal area of Tulungagung Regency, East Java Province. The results of this study indicate that the typology in the coastal area of Tuluagung Regency consists of structurally shaped coast, wave erosion coast, marine deposition coast, land erosion coast, sub aerial deposition coast and several forms of typology impact from human activities utilizing coastal resources. The form of dynamics that develop in the coastal area of Tulungagung Regency is generally influenced by environmental conditions, factors of sea water waves and human activities in meeting the needs of life as well as for meeting the means of tourism development. While the potential for disasters in the coastal areas of Tulungagung Regency such as tsunami, abrasion, and sea water intrusion.
KAJIAN ETNOBOTANI BUDAYA NGALAKSA DI KECAMATAN RANCAKALONG KABUPATEN SUMEDANG Yuna Islamiati; Nisrina Khairun Nisa; Restu Anugrah; Triska Rosma; Tri Cahyono
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Vol 20, No 1 (2020): Ekologia : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekologia.v20i1.1981

Abstract

The Rancakalong People still hold tight the local culture. Generally, the Rancakalong people are living as farmer. This matter makes the Rancakalong people do the culture of Ngalaksa. This cultural purpose is gratitude of prosperity throught the rice harvest symbolized as Dewi Sri. The purpose of this research is to examine ethnobotany of plants that used in Ngalaksa culture at Rancakalong Sub-district. The method of this research uses descriptive-exploration with the technique of data collection is Pusposive Random Sampling and Snowball Sampling. Ngalaksa culture relates with ethnobotany studies because it uses rice (Oryza sativa L.) as the main plant and other plants such as kecombrang (Etlingera elatior (Jack) R.M.Sm), congkok (Curculigo orchioides Gaertn), cariang (Colocasia esculenta (L.) Schott) and coconut (Cocos nucifera L.). These plants are needed in large quantities and cannot be replace by other plants.
VALIDASI DAN ANALISIS KADAR AKRILAMIDA PADA KOPI TUNGKAL DENGAN METODE KROMATOGRAFI CAIR KINERJA TINGGI (KCKT) Harmita Swandi; Armini Hadriyati; Mukhlis Sanuddin
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Vol 20, No 1 (2020): Ekologia : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekologia.v20i1.1983

Abstract

Acrylamide is a chemical compound found in roasted coffe at temperature above 120⁰C. potential to couse cancer in humans. The coffee used by processed at home in the village of Betara sub-district, Tanjung Jabung Barat, Kuala Tungkal, Jambi. The purpose of this study is to compare acrylamide content traditional coffee powder with the high performance liquid chromatography method (HPLC). The phase of motion used acetonitril : phosphate acid (80:20 v/v), using C18 or oktadesil silica (ODS) with size 250 nm × 4,6 mm,injection volume 20 μl, detector genesys 10S UV-Vis at wavelength 203 nm. Acrylamide is ground coffee was identified at retention time (tR) ± 5,825 minute. This method is proven valid with linearity y = 20717x + 28752, correlation coefficient (r) = 0,998%, the limit of detection 0, 32109 ppm and the limit of quantitation 1,07031 ppm, orecision with 2%. Acrylamide levels in coffee powder 1 to 4 respectively are 72,065 μg/g sample (1), 66,922 μg/g sample (2), 60,215 μg/g sample (3), and 61,422 μg/g sample (4). The four coffee samples showed that the acrylamide levels of each sample exceeded the safe limit of consumption of acrylamide released by FDA is 2 μg/g.

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