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INDONESIA
AL KAUNIYAH
ISSN : 19783736     EISSN : 25026720     DOI : 10.15408/kauniyah
Core Subject : Science,
Al-Kauniyah: Jurnal Biologi (p-ISSN: 1978-3736, e-ISSN: 2502-6720) is an Open Access Journal published by Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islamic University Jakarta, and established since 2007. Since 2016 Al-Kauniyah has established a collaboration with the Association of Lecturer in Biology and Biology Education throughout the State Islamic Higher University (PTKIN) in Indonesia. Until 2015, Al-Kauniyah covered environmental biology solely, but since 2016 the journal has been extended to cover the entire field of biological science (bioscience). By publishing biannually, on April and October, Al-Kauniyah is intended to communicate original researches and current issues on the subject of biology. Since volume 9 issue 1 April 2016, Al-Kauniyah had been changes the layout. This journal warmly welcomes contributions from scholars of related disciplines. Manuscripts can be submitted to AL-KAUNIYAH
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Articles 459 Documents
Kelimpahan Makrozoobentos di Perairan Situ Pamulang Alfin, Edward
Al-Kauniyah: Jurnal Biologi Vol 7, No 2 (2014): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (220.66 KB) | DOI: 10.15408/kauniyah.v7i2.2717

Abstract

The research on the abundance of macrozoobenthos in Situ Pamulang waters conducted in August 2014. This study aims to determined the types of macrozoobenthos and abundance in the region. This study used survey method with sampling at three (3) points by using purposive random sampling in Situ Pamulang waters. The results were obtained nine types of macrozoobenthos that overall there in 4 orders are 5 types of orders Sorbeoconcha, 2 types of orders Viviparoidea and each one kind of order Architaenioglossa and Hygrophyila. The abundance of macrozoobenthos between 25-2225 individuals/m2. Macrozoobenthos including low diversity index was 1.48. Macrozoobenthos dominance index of 0.25 so that it can be said there was no type that dominates in the region.
FITOREMEDIASI DENGAN WETLAND SYSTEM MENGGUNAKAN ECENG GONDOK (Eichhornia crassipes), GENJER (Limnocharis flava), DAN SEMANGGI (Marsilea crenata) UNTUK MENGOLAH AIR LIMBAH DOMESTIK Nadhifah, Iin Inayatun; Fajarwati, Putri; Sulistiyowati, Eka
Al-Kauniyah: Jurnal Biologi Vol 12, No 1 (2019): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v12i1.7792

Abstract

AbstrakSemakin banyaknya pemukiman yang dibangun di bantaran sungai di Yogyakarta membuat sungai tercemar limbah rumah tangga. Penelitian ini bertujuan untuk mengetahui efektivitas tanaman eceng gondok (Eichhornia crassipes), genjer (Limnocharis flava), dan semanggi (Marsilea crenata) sebagai fitoremediator dengan wetland system dalam pengolahan air limbah domestik. Tahap pelaksanaan penelitian fitoremediasi diawali dengan pengukuran parameter air limbah yaitu pH, suhu, DO, BOD, dan TDS. Setelah itu, dilakukan aklimatisasi tanaman pada reaktor yang berisi air dan wetland selama 1 minggu. Terdapat empat perlakuan (P1, P2, P3, dan P4) yang digunakan, yaitu P1: air limbah + wetland (sebagai kontrol), P2: air limbah + wetland + 1 eceng gondok, P3: air limbah + wetland + 1 genjer, P4: air limbah + wetland + 1 semanggi. Terdapat 2x pengulangan selama masa retensi 12 hari, 2 variasi pengenceran yaitu 10x dan 100x. Hasil penelitian menunjukkan bahwa tanaman genjer mampu meningkatkan kadar DO sebesar 50% dan menurunkan kadar BOD sebesar 78%, serta tanaman semanggi mampu menurunkan kadar TDS sebesar 41,4%. Angka ini mencerminkan bahwa penggunaan tanaman-tanaman tersebut memiliki potensi besar dalam membantu pemurnian air.Abstract The increasing number of settlements built along the river banks in Yogyakarta resulted in household waste entering the river. This study aims at determining the effectiveness of water hyacinth (Eichhornia crassipes), genjer (Limnocharis flava), and clover (Marsilea crenata) as phytoremediators, in a wetland system. Firstly, wastewater parameters such as pH, temperature, DO, BOD, and TDS are measured. After that, plants were acclimatized in the reactors containing water and substrate derived from a wetland for 7 days. There were four treatments applied in this research (P1, P2, P3, and P4), P1: wastewater + wetland (as control), P2: wastewater + wetland + 1 water hyacinth, P3: wastewater + wetland + 1 genjer, P4: wetland water + wetland + 1 clover. Each treatment was replicated twice during the 12 days retention period, and 2 variations of dilution of 10x and 100x. The results indicated that genjer plant was capable of increasing the DO level by 50% and lowering the BOD level by 78%, and the clover plant was able to decrease the TDS level by 41.4%. Those results reveal that the use of the plants has huge potential in helping water purification.
Komunitas Kelelawar (Ordo Chiroptera) di Beberapa Gua Karst Gunung Kendeng Kabupaten Pati Jawa Tengah Tamasuki, Kamal; Wijayanti, Fahma; Fitriana, Narti
Al-Kauniyah: Jurnal Biologi Vol 8, No 2 (2015): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (798.376 KB) | DOI: 10.15408/kauniyah.v8i2.2694

Abstract

The existance of bats in cave type with diverge managerial system are influenced abundance and species bats. This research was conducted from January to June 2012 that counting abundance and to identify bats at Gunung Kendeng Karst Area Pati Central Java. The bats were collected by using mist net and stalk net at flying track surrounding cave’s mouth of Pancur Cave, Serut Cave, Bandung Cave, Pawon Cave, Larangan Cave and Gantung Cave. Bats abundance at Pancur Cave amount  ±  484 bats, Serut Cave amount ± 1233 bats, Bandung Cave amount ± 715 bats, Pawon Cave amount ± 392 bats, Larangan Cave ± 23 bats and Gantung Cave ± 5 bats. The six species were collected from this research, such as Cyanopterus horsfieldii, Hipposederos larvatus, Hipposideros bicolor, Rhinolophus affinis, Murina suilla dan Miniopterus australis. The analyst result is used Diversity Index of Shannon-Wiennner showed the highest diversity at Pancur Cave (H=0,35054) and the lowest at Gantung Cave (H=0,13633). Similarity index of shannon Evenness is showed the highest similarity at Pancur Cave (E=0,50572) and the lowest at Larangan Cave (E=0). Domination index of simpson is showed the highest domination at Pancur Cave (C=0,06805)  and the lowest at Gantung Cave (C=0,00189). Hipposederos larvatus and Miniopterus australis are species that common and often founded during this research.
EKSTRAK KASAR KAYU CEMPEDAK (Artocarpus champeden) DAN AKAR UBE-UBE (Derris elegans) SEBAGAI PENGAWET ALAMI NIRA AREN Suganda, Julis; Afriyansyah, Budi; Fembriyanto, Rosha Kurnia
Al-Kauniyah: Jurnal Biologi Vol 11, No 2 (2018): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v11i2.6977

Abstract

AbstrakNira aren (Arenga pinnata) sebagai bahan baku pembuatan gula aren mudah terkontaminasi oleh mikroba seperti khamir Saccharomyces cerevisiae dan bakteri Acetobacter sp. Kerusakan nira dapat dihambat dengan menggunakan bahan pengawet alami. Bahan pengawet alami yang biasa digunakan untuk menghambat kerusakan nira aren ialah ekstrak kayu cempedak (Artocarpus champeden) dan ekstrak akar ube-ube (Derris elegans) yang dibuat dengan menggunakan teknik maserasi. Tujuan dari penelitian ini untuk mendapatkan konsentrasi terbaik dalam penghambatan mikroba dan konsentrasi terbaik aplikasi sebagai pengawet alami nira aren. Pengamatan meliputi penghambatan mikroba (pembentukkan zona) dan aplikasi pengawet alami nira aren (total gula dan pH). Hasil menunjukkan ekstrak akar ube-ube konsentrasi 14% merupakan konsentrasi terbaik dalam pembentukkan zona penghambatan mikroba. Nilai total gula dan pH terbaik dalam mencegah kerusakan nira aren pada penambahan ekstrak ube-ube dengan konsentrasi 14%. Berdasarkan penelitian ini bahwa ekstrak akar ube-ube dengan konsentrasi 14% merupakan pengawet alami yang terbaik dalam mengambat mikroba perusak nira aren.Abstract Palm juice (Arenga pinnata) as a raw material for making palm sugar easily contaminated by microbes such as yeast Saccharomyces cerevisiae and bacteria Acetobacter sp. Damage to sap can be inhibited by using natural preservatives. Natural preservatives used to inhibit the damage to Arenga pinnata sap is cempedak wood extract (Artocarpus champeden) and ube-ube root extract (Derris elegans) making of using maseration technique. The purpose of this research consentration that shows the best to inhibition growth to microbial and consentration that natural palm juice preservative application. Observations included microbial inhibition (zone formation) and natural palm juice preservative (total sugar and pH). The results showed extract ube-ube root concentration of 14% is the best concentration to inhibition growth to microbial. The value of total sugar and pH the best in preventing damage to palm juice on the addition of extract ube-ube root with a concentration of 14%.  Based in this study that the of extract ube-ube root with a consentration of 14% is the best natural preservative in inhibiting the microbes destroying palm sugar.
STRUKTUR KOMUNITAS MAKROZOOBENTOS DI EMPAT MUARA SUNGAI CAGAR ALAM PULAU DUA, SERANG, BANTEN Ridwan, Muhammad; Fathoni, Rizal; Fatihah, Ishma; Pangestu, Danang Aji
Al-Kauniyah: Jurnal Biologi Vol 9, No 1 (2016): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (480.97 KB) | DOI: 10.15408/kauniyah.v9i1.3256

Abstract

Abstrak Penelitian ini dilaksanakan di sungai dan estuari yang berada di kawasan Cagar Alam Pulau Dua, Serang, Banten. Kawasan tersebut sering dimanfaatkan oleh warga setempat untuk pengairan tambak yang berada di luar kawasan. Aktivitas tersebut secara tidak langsung akan berpengaruh terhadap biota yang berada di sungai maupun estuari. Makrozoobenthos merupakan salah satu aspek biologis yang berperan penting dalam pengkajian kualitas suatu perairan. Tujuan penelitian ini adalah untuk mengetahui struktur komunitas makrozoobenthos yang berada di Cagar Alam Pulau Dua. Metode yang digunakan adalah survey deskriptif. Pengambilan sampel dilakukan secara purposive sampling dengan menetapkan 4 stasiun penelitian. Berdasarkan hasil penelitian ditemukan 9 jenis makozoobenthos yang dikelompokkan menjadi 6 famili, yaitu Grapsidae, Littorinidae, Panaeidae, Planaxidaae, Ocypodidae dan Potamididae. Indeks Keanekaragaman yaitu sebesar 0,693–1,646, nilai kemerataan jenis sebesar 0,149–0,457, dan nilai dominansi yaitu 0,5. Keanekaragaman dan dominansi menunjukkan nilai yang rendah. Dominansi Metopograpsus latiforus menyebabkan terganggu dan tidak stabilnya perairan di kawasan cagar alam. Abstract Research was carried out in rivers and estuaries in nature conservation Cagar Alam Pulau Dua, Serang, Banten. Those areas are often used by local residents to irrigate ponds outside the sites. That activity directly influences biota in the rivers and estuaries. Macrozoobenthos is one of biology aspects that play an important role in quality assessment of irrigation. This research aimed to study macrozoobenthos community structure in Cagar Alam Pulau Dua by using a descriptive survey method. Sample was collected by using a purposive sampling method and deciding 4 research sites.  Research found 9 species of macrozoobenthos belonged to 6 families, namely Grapsidae, Littorinidae, Panaeidae, Planaxidaae, Ocypodidae, and Potamididae. Diversity index was 0,693–1,646, evenness value was 0,149–0,457, and dominance value was 0,5. Diversity index and dominance value were indicated low. Dominance value of Metopograpsus latiforus led to unstable and damaging irrigation in nature conservation.  
IDENTIFIKASI SENYAWA AKTIF EKSTRAK DAUN CENGKEH (Syzygium aromaticum) SEBAGAI INHIBITOR Streptococcus mutans Suhendar, Usep; Sogandi, Sogandi
Al-Kauniyah: Jurnal Biologi Vol 12, No 2 (2019): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.67 KB) | DOI: 10.15408/kauniyah.v12i2.12251

Abstract

AbstrakKaries gigi adalah penyakit yang umum dialami oleh masyarakat yang terjadi karena buruknya kebersihan mulut. Kebiasaan masyarakat yang kurang menjaga kebersihan mulut mengakibatkan terbentuknya plak. Plak pada gigi terbentuk karena aktivitas dari berbagai macam mikroorganisme di mulut. Mikroorganisme yang diketahui terlibat dalam pembentukan karies gigi adalah Streptococcus mutans. Salah satu bahan alternatif sebagai antibakteri adalah daun cengkeh. Penelitian ini bertujuan untuk mengidentifikasi senyawa bioaktif daun cengkeh dan mengetahui mekanisme aksinya dalam menghambat pertumbuhan Streptococcus mutans. Daun cengkeh (Syzygium aromaticum) yang digunakan dalam penelitian ini dimaserasi menggunakan metanol 96%. Pengujian aktivitas antibakteri dilakukan dengan metode difusi agar, senyawa bioaktif diidentifikasi menggunakan gas chromatography mass spectrometry dan perubahan membran sel bakteri diamati dengan scanning electron microscopy. Hasil penelitian menunjukkan ekstrak metanol daun cengkeh memiliki aktivitas penghambatan terhadap pertumbuhan bakteri Streptococcus mutans dengan zona hambat sebesar ±32 mm serta nilai konsentrasi hambat minimum (KHM) 20% ekstrak. Mekanisme aksi penghambatan ekstrak daun cengkeh terhadap pertumbuhan bakteri diduga dengan membuat lubang pada membran sel bakteri. Hasil penelitian ini juga menunjukkan bahwa daun cengkeh memiliki kandungan senyawa bioaktif 3-allyl-6-methoxyphenol-eugenol, caryophyllene 1,4,7,-cycloundecatriene, 1,5,9,9-tetramethyl, phenol, 2-methoxy-4-(2-propenyl), dan eugenol acetate yang dapat menjadi kandidat penghasil senyawa aktif untuk mengatasi karies gigi.Abstract Dental caries is a common disease experienced by people who do not maintain oral hygiene. Habits of not maintain oral hygiene result in the formation of plaque. The microorganism known to be involved in the formation of dental caries is Streptococcus mutans. Plants that have antibacterial properties, such as clove (Syzygium aromaticum) leaf, can be an alternative for carrying this problem. This study aims to identify the bioactive compounds of clove leaves and to determine the mechanism of its action in inhibiting the growth of Streptococcus mutans. Clove leaves were macerated using 96% methanol for the extraction. Antibacterial activity was examined by agar diffusion method, bioactive compounds were identified using gas chromatography mass spectrometry, and bacterial cell membrane changes were observed by an image captured using scanning electron microscopy. The results showed that the methanol extract of clove leaf had inhibitory activity on Streptococcus mutans growth, with inhibitory zones of ±32 mm and the minimum inhibitory concentration (MIC) of 20% extract. It was suspected that the mechanism of inhibitory action is by making pores in the bacterial cell membrane. The results also showed that the clove leaves contain bioactive compounds of 3-allyl-6-methoxyphenol-eugenol, caryophyllene, 1,4,7, -cycloundecatriene, 1,5,9,9-tetramethyl, phenol, 2 -methoxy-4- (2-propenyl), and eugenol acetate which can be candidates for producing active compounds to overcome dental caries.
Pengaruh Asam Kuat, Pengamplasan, Dan Lama Perendaman Terhadap Laju Imbibisi Dan Perkecambahan Biji Aren (Arenga pinnata) Silalahi, Marina
Al-Kauniyah: Jurnal Biologi Vol 10, No 2 (2017): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (624.95 KB) | DOI: 10.15408/kauniyah.v10i2.4758

Abstract

Abstrak (Biji Arenga pinnata memiliki kulit biji  keras dan berlignin sehingga menghambat masuknya air ke dalam biji. Lapisan lignin pada kulit biji dapat didegradasi melalui reaksi kimia maupun perlakuan fisik. Perendaman biji aren dengan asam kuat (HNO3, H2SO4, dan HCl) dan pengamplasan akan mempengaruhi laju imbibisi air melewati kulit biji. Variabel bebas dalam penelitian ini adalah konsentrasi asam kuat (HNO3, H2SO4, dan HCl), luas pengamplasan, air panas, lama perendaman, sedangkan variabel terikat laju imbibisi pada biji aren. Konsentrasi asam kuat yang digunakan adalah 1M dan 0,5M untuk masing-masing HNO3, H2SO4, dan HCl. Pengamplasan dilakukan di bagian pangkal biji, dan luas pengamplasan bervariasi (tanpa amplas, amplas ½ bagian, dan amplas keseluruhan). Setiap perlakuan direndam selama 18, 24 dan 36 jam. Biji aren yang diberi perlakuan fisik maupun kimia mengalami pengelupasan kulit biji. Laju imbibisi biji pada perendaman 24 jam lebih tinggi dibandingkan dengan lama perendaman 18 maupun 36 jam. Laju imbibisi tertinggi terjadi pada waktu perendaman 1M HCl dan amplas penuh dengan lama perendaman 24 jam sebesar 0,038 ± 0,002 mL/jam dan 0,038 ± 0,007 mL/jam . Biji aren yang diberi perlakuan fisik dan kimia mulai berkecambah 7 minggu setelah tanam dengan daya kecambah tertinggi pada pemberian HNO3 dan lama perendaman 18 jam.Abstract Arenga pinnata seed has a hard seed coat and lignin that inhibit the absorption of water into the seed. The lignin in the seed coat can be degraded by chemical or physical treatments. Soaking of the palm seeds into strong acids (HNO3, H2SO4, or HCl) and sanding may affect the imbibition rate. The research was conducted to investigate the effect of a strong acid, sanding, and soaking time to the imbibition rate of A. pinnata seed. The independent variables in this research are concentration of the strong acids HNO3, H2SO4, and HCl; sanding, and soaking time, while the dependent variable is the rate of imbibition of A. pinnata Merr. The concentrations of the strong acid used were 1M and 0.5M. The sanding was performed on the base of seeds, which were varied into without sanding, ½ parts, and full sanding). The soaking durations were for 18, 24 and 36 hours. Palm sugar seeds treated by physical or chemical showed damage of the skin seeds. The seeds soaked with strong acid absorbed more water than the sanding and control treatments. The rate of imbibition for a 24-hour soaking showed imbibition rate higher than the 18 or 36-hour soaking. The highest rates of imbibition occurred on the treatments of 1M HCl soaking and 24 hours full sanding which were 0.038 ± 0.002 mL/h and 0.038 ± 0.007 mL/h, respectively. The seeds by physical and chemical treatments started their germination in seven weeks after planting with the highest germination from the treatments of HNO3 and 18 hours soaking time.Permalink/DOI: http://dx.doi.org/10.15408/kauniyah.v10i2.4758
Pengaruh Kombinasi Media Tanam dan Pemupukan terhadap Pertumbuhan Biji Tumbuhan Sarang Semut (Myrmecodia tuberosa Jack.) Sari, Yanti Puspita; Susanto, Dwi; Hutauruk, Eva Agustriani
Al-Kauniyah: Jurnal Biologi Vol 6, No 1 (2013): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (474.662 KB) | DOI: 10.15408/al-kauniyah.v6i1.2827

Abstract

Anthill plant (Myrmecodia tuberosa Jack.) or sarang semut is a native plant epiphytes from Indonesia. Anthill plants used as a medicinal because contains compounds active such as flavonoids, tannins and polyphenols that are beneficial to the human body. The aims of study to determine the influence of the media type of planting and the best of fertilization on the growth of anthill plants. This study consisted of two treatment are the first treatment plant seed germination anthill on different media of treatments that husk fuel, cocopeat, fern roots and moss. The second treatment is growth plant of anthill are using completely randomized design (CRD) with two factors different. The first factor is the growing media with 4 levels of fuel treatments, husk fuel, cocopeat, fern roots and moss. The second factor is a fertilizer with a second level of treatment that is with and without fertilizer (Gandasil D 2 g/L). Influence significantly of treatment we used Duncan test (DMRT) level of 95%. The results of study in the first treatment, anthill plant can germinate 100% in all treatment media. In the second treatment, the use of growing media and fertilizer significantly influenced the increase of plant height, leaf number and leaf area. The average of plant height in moss media with the addition of fertilizer of 35.75 mm, the highest number of leaves from all treatment media with the addition of fertilizer of 2,00 strands, the largest leaf area from cocopeat media with the addition of fertilizer of 77,02 mm2, and the increase of tubers diameter found in cocopeat media with the addition of fertilizer of 4.13 mm.
BIODEGRADASI PLASTIK LDPE HITAM DAN PUTIH PADA SAMPAH TPA ANTANG DALAM KOLOM WINOGRADSKY Aziz, Isna Rasdianah; Muthiadin, Cut; Hafsan, Hafsan
Al-Kauniyah: Jurnal Biologi Vol 12, No 2 (2019): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (897.732 KB) | DOI: 10.15408/kauniyah.v12i2.10037

Abstract

AbstrakDalam dunia industri, baik industri sandang, pangan, papan, transportasi, medis maupun rekreasi tidak terlepas dari penggunaan kantong plastik. Karena bersifat praktis, berbagai jenis kantong plastik sebagai kemasan selalu menjadi pilihan dalam aktivitas masyarakat. Akan tetapi, sifat plastik yang sulit terdegradasi pada lingkungan alami menimbulkan permasalahan sebagai salah satu sumber pencemaran. Penelitian ini bertujuan untuk mengetahui potensi mikroorganisme tanah yang diisolasi dari sampah Tempat Pembuangan Akhir (TPA) Antang Makassar dalam mendegradasi kantong plastik LDPE hitam dan putih. Metode biodegradasi plastik yang digunakan adalah kolom Winogradsky dengan menggunakan kolom kaca 1.000 mL yang berisi 500 gram tanah sampah TPA Antang dan plastik uji LDPE warna hitam dan putih. Kemudian dilakukan pengukuran persentase degradasi selama 3 bulan masa inkubasi dengan waktu panen selama 3 minggu sekali. Hasil penelitian menunjukkan bahwa terdapat 6 isolat dalam kolom Winogradsky mampu mendegradasi plastik LDPE hitam sebesar 3,5% dan 6 isolat lainnya mampu mendegradasi plastik LDPE putih sebesar 2%. Selanjutnya, isolat ini dapat digunakan sebagai agen biodegradasi plastik di TPA Antang Makassar.Abstract The use of plastic bags is almost unavoidable in industries, including the food, clothing, transportation, construction, medical, and recreational industries. Various types of plastic bags have been used in various types of packaging, because of the value of practicality. However, the difficulties in the degradation process become a problem as a pollution source in the environment. The purpose of this study was to determine the potential of soil microbes isolated in Antang landfill, Makassar, in degrading black and white plastics of LDPE. The biodegradation method used was the Winogradsky column using a 1,000 mL glass column containing 500 grams of Antang landfill soil and using black and white LDPE as well. The percentage of degradation was measured for three months incubation period with harvest time for three weeks. The results showed that the inoculum in Winogradsky column was able to degrade the black plastic by 3.5% and the white plastic by 2%. The results of macroscopic and microscopic characterization showed that six isolates were degrading the black plastic and six isolates were degrading the white plastic, with different characteristics. Furthermore, this isolate can be utilized as a biodegradation agent for plastic in the Antang landfill.
Performa Udang Hias Red Cherry (Neocaridina heteropoda) pada Fase Pembesaran Melalui Aplikasi Warna Wadah Berbeda Subamia, I Wayan; Himawan, Yogi
Al-Kauniyah: Jurnal Biologi Vol 7, No 1 (2014): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (212.232 KB) | DOI: 10.15408/kauniyah.v7i1.2711

Abstract

Shrimp red cherry shrimp is one of the ornamental potential developed. One of the conservation efforts can be made to increase production by optimizing keragaannya on enlargement phase. This study aims at scaling up the production of red cherry shrimp, especially in the phase of enlargement. Treatment in the form of background color is composed of (A) without colors (control), (B) white, (C) in black, and (D) red. Each treatment was repeated three times with a 45-day long research. Container maintenance in the form of an aquarium measuring 14x14x14 cm3 volume of 1 l and equipped with aeration. The prawns used were 10 fish / aquarium with a weighted average of 0.018 ± 0.21 g and the total length of the average of 0.82 ± 0.21 cm. Feeding in the form of an ad bloodworm satiation and include aquatic plant Hydrilla sp. as a source of additional food and shelter in the form of detritus. The results showed that the weight gain and the highest long background color was achieved by treatment D (red) which is equal to 0.09 ± 0.3 g and 1.62 ± 0.3 cm. Survival at each treatment reached 100%. The water quality of all treatments during the study period remained within normal limits.

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