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Manilkara: Journal of Bioscience
Published by Universitas Terbuka
ISSN : -     EISSN : 29640164     DOI : https://doi.org/10.33830/manilkara
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Neuroscience Veterinary
MANILKARA: Journal of Bioscience is designed to share research articles from academics, researchers, practitioners, and students on research in various aspects of biology and its applications. Papers for publication in this journal are selected through proper peer-review to ensure quality, originality, suitability, and legibility. This journal covers various disciplines in biology (microbiology, genetics, biochemistry, physiology, ecology, taxonomy, structure and development of animals/plants, and evolution); Biotechnology; and applied science in solving problems in the fields of biology (biomedical, agricultural, industrial, ethnobiological, and environmental). The journal is published biannually on February and August.
Arjuna Subject : Umum - Umum
Articles 5 Documents
 1 
Search results for , issue "Vol 1 No 2 (2023): Februari" : 5 Documents clear
Antibacterial Activity of Ethanolic Extract Siwak Stem (Salvadora persica) Against Staphylococcus aureus ATCC 25923 Nisa’ Nur Sholikhah; Andang Arif Wibawa; Rizal Maarif Rukmana
MANILKARA: Journal of Bioscience Vol 1 No 2 (2023): Februari
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (332.08 KB) | DOI: 10.33830/manilkara.v1i2.4095.2023

Abstract

Infection is caused by bacteria, one of which is Staphylococcus aureus. Infectious treatment can use Siwak as natural plants (Salvadora persica), namely Siwak plants. Salvadora persica contains Saponins, Alkaloids, Tanins, and Fenols. This study is to know the antibacterial activity of Salvadora persica stems against Staphylococcus aureus ATCC 25923 growth. Extraction method using maceration with ethanol as a solvent. The group of extract compounds was identified using various chemical reagents. Salvadora persica stem extract was made in various concentrations of 6,25%, 12,5%, 25%, and 50% by using dimethyl sulfoxide 2% (DMSO) as thinner. Chlorhexidine 0,2% was a positive control, and DMSO 2% was a negative control. Antibacterial activity test was obtained by diffusion method. Analysis data used way ANOVA test. The results ethanolic extract of the siwak stem contains a class of compounds: saponins, alkaloids, tannins, and phenols. The result showed that Salvadora persica stem extracts antibacterial activity against Staphylococcus aureus ATCC 25923. Antibacterial activity test against Staphylococcus aureus from laboratory culture showed an average of largest inhibition zone diameter on 50% concentration with 20,5 mm diameter and smallest inhibition zone at 6,25% concentration with 14 mm diameter.
Dampak Lama Penyimpanan Arsip Sampel Formalin-Fixed Paraffin-Embedded (FFPE) dengan Konsentrasi Ribonucleid acid (RNA) yang Diekstraksi Menggunakan Kit Komersial Nur Eka Wiraditya
MANILKARA: Journal of Bioscience Vol 1 No 2 (2023): Februari
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.892 KB) | DOI: 10.33830/manilkara.v1i2.4442.2023

Abstract

Formalin fixation and paraffin embedding (FFPE) is one method of storing sample records over many years. Sample storage over a long period of time allows for a decrease in RNA quality in the sample. This study determines the difference in RNA concentrations in the 2019 and 2020 sample archives with ng/L units. The sample details are 10 (ten) samples in 2019 and 10 (ten) samples in 2020. This research was conducted in 2021 at the Anatomic Pathology laboratory of FK-KMK UGM. This study shows a significant impact on the archival storage of FFPE samples shown by a decrease in RNA concentration between 2019 and 2020 with an average concentration difference of 12.3 ng/L.
Efektivitas Lama Perendaman Benih Padi dalam Kultur Mikroorganisme Lokal (MOL) Bonggol Pisang Terhadap Pertumbuhan dan Produksi Padi Argadatta Sigit; Rosdiana; Dameria
MANILKARA: Journal of Bioscience Vol 1 No 2 (2023): Februari
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (260.829 KB) | DOI: 10.33830/manilkara.v1i2.4647.2023

Abstract

The need for rice from year to year continues to increase due to the growing population of Indonesia, but this is not balanced with sufficient rice production. This is what makes it difficult for Indonesia to be self-sufficient in food so that efforts are needed to increase rice production nationally so that domestic rice needs are met. This panel aims to see the effectiveness of long soaking of rice seeds in MOL banana weevil on vegetative growth and yield of Ciherang variety rice plants. The research was conducted in November 2021 – March 2022 on open land of BPP Caringin, Legok District, Tangerang Regency. The study was conducted using the Randomized Complete Group Design (RKLT) method consisting of 5 treatments, namely control (without soaking MOL banana weevil), soaking rice seeds for 6 hours, 12 hours, 18 hours, and soaking for 24 hours. Each treatment was repeated 5 times so that there were 25 experimental units. Each experimental unit consists of three plants, the number of plants to be studied is 75 plants. Soaking seeds in MOL banana weevil for 24 hours gives the best results for the growth and production of Ciherang rice plants.
Relationship Between Bird Communities and Environmental Changes in Tandung Village, Tinambung District, Polewali Mandar Regency, West Sulawesi Province Alexander Kurniawan Sariyanto Putera; Phika Ainnadya Hasan; Muhammad Rizaldi Trias Jaya Putra Nurdin
MANILKARA: Journal of Bioscience Vol 1 No 2 (2023): Februari
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (692.451 KB) | DOI: 10.33830/manilkara.v1i2.4654.2023

Abstract

Indonesia's coastal region is known for its richness and diverse natural resources. However, the region is experiencing a transformation from mangrove ecosystems to the traditional pond cultures. This was happening in West Sulawesi that could damage the ecosystem in the long term, especially for the bird community. This study aims to inventory bird species in the bird community on the coast of Tandung Village, Tinambung District, Polewali Mandar Regency, West Sulawesi Province. In addition, we also study the bird community structure, find out the correlation among the bird communities, and the environmental condition during the inventory. In this study, we used a fixed-radius point count method to record birds. Field guide titled Burung-burung Pulau Paparan Sunda dan Wallacea di Kepulauan Indonesia was used to identify the species of observed birds. The results showed that of the 27 species recorded, there are 5 species with a high relative abundance, such as Egretta garzetta, Himantopus leucocephalus, Actitis hypoleucos, Ardeola speciosa, and Calidris ruficollis. Only H. leucocephalus is identified as a protected bird by the Indonesian government, while Calidris ruficollis is protected internationally as its conservational status (Near Threatened). The diversity index is moderate level, but it is decreasing day by day of observation, followed by the dominance index, evenness, and species richness. A high correlation between the two bird communities with two adjacent days of observation indicates similarity composition of community structure with different temporal scales and similar spatial scales. The map of environmental conditions shows changing weather in the period of observation sequentially from bright sky to cloudy and heavy rain and back to the normal bright sky at the last period of observation. The response of the bird community to the condition was by flying away when the weather is cloudy and rainy so that may decrease the diversity.
Keragaman Spesies Satwa Liar Berbasis Bidikan Kamera Jebak (Camera Trap) di Cagar Alam Pulau Sempu, Kab. Malang, Jawa Timur Mohamad Sukron Makmum
MANILKARA: Journal of Bioscience Vol 1 No 2 (2023): Februari
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (584.817 KB) | DOI: 10.33830/manilkara.v1i2.5036.2023

Abstract

Concerns and vulnerability to the occurrence of damage to ecosystems in the Sempu Island Nature Reserve (CAPS), Malang Regency by human activities can have an impact on the survival of life and the decline of wildlife populations. The study aimed to calculate species richness and frequency of wildlife species encounters using camera traps in the CAPS area. The methodology uses the calculation of digital photographic recording evidence of camera traps. Wildlife caught on camera traps is calculated based on the   number of photographs, the number of species, and the number of days the camera is active. The results showed a wealth of wildlife identified as many as 15 species, namely Muntiacus muntjak (Cervidae), Macaca fascicularis (Cercopithecidae), Paradoxurus hermaprodithus (Viverridae), Callosciurus notatus (Sciuridae), Tragulus javanicus (Tragulidae), Hystrix javanica (Hystricidae), Trachypithecus auratus (Cercopithecidae), Sus scrofa (Suidae), Prionodon linsang (Prionodontidae), Varanus nebulosus (Varanidae), Gallus gallus (Phasianidae), Chalcophaps indica (Columbidae),  Spilornis cheela (Accipitridae), Hydrornis guajanus (Pittidae) and Varanus salvator (Varanidae). The results of calculating the frequency of wildlife encounters vary relatively from high to low values, but of the 15 species recorded the highest gains, Muntiacus muntjak (ER 11.17 photos / day) and Macaca fascicularis (ER 10 photos / day).

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