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Dwi Anggorowati Rahayu
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Jurnal Riset Biologi dan Aplikasinya
Published by Universitas Negeri Surabaya
ISSN : -     EISSN : 26559927     DOI : 10.26740/jrba
Core Subject : Health, Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Medicine & Pharmacology
Jurnal Riset Biologi dan Aplikasinya is a peer-reviewed journal that strives to provide scientific information on the research results which focused on biological science (Ecology, Animal and Botanical Systematics, Microbiology, Zoology, Botany, Biotechnology, and Genetics and Evolution) and biological education (Innovation of Biology Learning, Assessment and Evaluation in Biology, and Media of Biology)
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ecology, Evolution, Behavior and Systematics
Articles 6 Documents
 1 
Search results for , issue "Vol. 2 No. 2 (2020)" : 6 Documents clear
Antibacterial Activity of Beluntas (Pluchea indica L.) Leaves Extract using Different Extraction Methods Kinanti Ayu Puji Lestari; Putri Priliawati Pranoto; Sofiyah Sofiyah; Majidah Musyirah; Faizatin Isnaini Pratiwi
Jurnal Riset Biologi dan Aplikasinya Vol. 2 No. 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v2n2.p49-54

Abstract

Escherichia coli and Bacillus subtilis are bacteria that cause disease in the digestive tract. Pluchea indica L. had the pharmacological activity of antiseptic power against bacteria that cause digestive tract infections because of contained antibacterial compounds. The study on the comparison of extraction methods will enable the public to choose a better extraction method to use as an antibacterial agent. This study aimed to identify the content of antibacterial compounds in Pluche indica L. and to determine the antibacterial ability of Pluche indica L. extract using maceration, percolation, and soxhletation methods. The results showed that Pluchea indica L. contains flavonoids, alkaloids, saponins, and tannins. The highest diameter inhibition of Escherichia coli and Bacillus subtilis was obtained from Pluchea indica L. leaves extract extracted by using the Soxhletation method.
Effectiveness of Apu-Organic Liquid Fertilizer (Pistia stratiotes L.) on Ipomoea reptans Poir. Growth Ambar Pratiwi; Arni Isma Nurrohmi
Jurnal Riset Biologi dan Aplikasinya Vol. 2 No. 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v2n2.p55-63

Abstract

Fertilization uses organic fertilizers made of Apu-apu (Pistia stratiotes L.) can support nutrient availability there by increasing soil fertility. P. stratiotes L. contains nutrients but in elemental form that is not yet available. So far, the abundance of P. stratiotes L. has not been utilized properly by the society, hence that research is needed to make liquid organic fertilizer P. stratiotes L. by fermentation. The purpose of this study was to determine the increase in the growth of Ipomoea reptans Poir. by giving apu-apu liquid organic fertilizer and determine the optimum concentration of liquid organic fertilizer for apu-apu for the growth of ground water spinach. This research was conducted at the Kemusuh Green House, Banyurejo, Tempel, Sleman. The independent variable used was the POC concentration of Apu-apu plants with five replications and six levels of treatment (K = 0%, P1 = 4%, P2 = 8%, P3 = 12%, P4 = 16% and P5 = 20%). The data obtained were analyzed using ANOVA followed by the Duncan Test. Apu-apu liquid organic fertilizer contains elements C (4.6%), N (0.07%), P (0.09%) and K (0.07%). The application of liquid organic fertilizer made from apu-apu has an effect on the growth of water spinach on the parameters of the number of leaves, leaves width, fresh weight and chlorophyll content. The conclusion obtained from the results of this study is that the application of liquid organic fertilizer apu-apu provides an increase in the growth of ground water spinach.
Defining the Rearing Cage for Agriocnemis femina Damselfly (Odonata, Zygoptera, Coenagrionidae) Muhammad Nazri Janra; Henny Herwina; Hafizhah Rahmayani; Lily Rahmawati; Dika Putri Sehati; Shania Refka Fandesti
Jurnal Riset Biologi dan Aplikasinya Vol. 2 No. 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v2n2.p42-48

Abstract

Rearing insects such as dragonflies and damselflies aim to gain uniform progeny that used for scientific purposes. In Indonesia, unfortunately, this rearing type is not yet common which suggests the time for its initiation. This study has objective to define the type of rearing cage for Agriocnemis femina damselfly (Odonata, Zygoptera, Coenagrionidae). It was conducted descriptively by using two smalls (9 x 13 x 23 cm), four medium (14 x 15 x 22 cm) and two larges (20 x 23 x 33 cm) size boxes as cage setups, with or without ornamental plants in it. The feeding was with limited (10-15 Drosophila flies provided per day) and unlimited provision. Data was analyzed descriptively. The results showed that A. femina lived normally, including eating and mating, within the large cage setup equipped with ornamental plants and unlimited feeding.
The Phenetic Relationship of Ferns (Polypodiaceae) at the Ascent of Cemoro Kandang, Mount Lawu Advend Sri Rizky Sianturi
Jurnal Riset Biologi dan Aplikasinya Vol. 2 No. 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v2n2.p64-69

Abstract

The fern is one of the highly diverse vascular plant species, which has a unique characteristic. The closely related at the family level because the genera within each family have some uniformity so that the relationship and groupings cannot be distinguished. One example of a diverse fern family is Polypodiaceae. Consequently, it is necessary to simplify the classification; one of them is through phenetic relationship analysis. This study aimed to analyze the phenetic relationship of the Polypodiaceae ferns in Climbing Cemoro, Mouth Lawu enclosure, Karangayar Regency, based on the similarity index on the dendogram. The data were collected using the exploration method and the sporophyte morphological characters were observed. The observations obtained 13 variations of characters. The relationship analysis was carried out with the hierarchical cluster program using SPSS 23. There were six species found from the Polypodiaceae family, there were including Belvisia mucronata, Goniophlebium sp, Lepisorus sp, Pyrrosia piloselloides, Crypsinus taeniatus and Drynaria sparsisora. The finding suggests that six species are divided into two clusters, the Group I consisting of Goniophlebium sp, Lepisorus sp, Lepisorus sp, and Pyrrosia pilloselloides with a similarity coefficient index of 53% and Group II consisting of Drynaria sparsisora, Goniophlebium sp, and Pyrrosia piloselloides with a similarity index of 46%.
Addition of Carbon Sources to Pineapple Waste Media in the Production of Single Cell Protein Biomass Saccharomyces cerevisiae Anggi Nurmalasari; Shinta Maharani
Jurnal Riset Biologi dan Aplikasinya Vol. 2 No. 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v2n2.p70-76

Abstract

Single-cell protein (SCP) is the term used for crude or pure protein derived from simple single or multi-celled microorganisms. Pineapple peel contains monosaccharides as much as 10.8% so that it can be used as a fermentation medium in single-cell protein production. The purpose of this study was to determine the effect of adding carbon sources of fructose and sucrose on pH, cell dry weight, and protein content in the manufacture of single-cell proteins. This study used a completely randomized design (CRD) with two factors, namely the addition of carbon (fructose, sucrose, and control) and fermentation time (24.48, and 72 hours). The data analysis used the variance test and the Duncan Multiple Range Test (DMRT) continued to test with a confidence level of 95%. The results showed that the addition of carbon to the media had a very significant effect on media pH, cell dry weight, and protein content. In the medium with the addition of fructose it has a pH of 3.81; dry weight 0.4203 grams; and protein content 69.08/L. Whereas in the media with the addition of sucrose, the pH was 4.33, the dry weight of the cells was 0.3385 grams, and the cells had a protein content of 85.55 mg/L. The addition of a fructose carbon source gave the cell dry weight more than the addition of carbon sucrose
Analysis Condition of Coral Reef Covering in Pramuka Island Waters, Seribu Islands using Line Intercept Transect (LIT) Method Rega Permana; Nora Akbarsyah; Pringgo KDNY Putra; Aulia Andhikawati
Jurnal Riset Biologi dan Aplikasinya Vol. 2 No. 2 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v2n2.p77-81

Abstract

The coral reef ecosystem is one of the typical tropical ecosystems with high biodiversity which has an important role both biologically, ecologically, physically as well as socially and economically. Several coral reef areas in Indonesia were reported to have suffered damage, not only due to climate change which has an impact on rising sea surface temperatures and ocean acidification but also due to anthropogenic factors and irresponsible management of marine tourism. This study aimed to analyze the condition of coral reefs based on covering in Pramuka Island, which is one of the famous tourist destinations in the Seribu Islands. The study was conducted using Line Intercept Transect (LIT) method at predetermined coordinate points. The results showed that the dominant coral reef life form was Acropora Submassive (ACS), namely 18.9%, and Acropora Branching (ACB) as much as 12.48%. Besides, the types of life forms found were coral foliase (9.42%), Miliepora Coral (9.2%), Coral Massive (4.8%), Acropora Encrustring (4.24%), and so on. Based on the results of this study, it can be concluded that the condition of coral reefs in Pramuka Island is still relatively good with a total coral cover percentage of 72.38%. Efforts to protect the coral reef ecosystem in this area need to be considered so that its condition can be maintained. 

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