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Research Journal of Life Science
Published by Universitas Brawijaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
Welcome to the Research Journal of Life Science, published by the Institute of Research and Community Service UB. For further information please contact our editorial office.
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Articles 5 Documents
 1 
Search results for , issue "Vol 9, No 1 (2022)" : 5 Documents clear
Study on Total Protein and Amino Acid Profile of Milkfish (Chanos chanos) Meat and Its Product from Sidoarjo, East Java Jeny Ernawati Tambunan; Eddy Suprayitno; Titik Dwi Sulistiyati; Mikchaell Alfanov Pardamean Panjaitan
Research Journal of Life Science Vol 9, No 1 (2022)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rjls.2022.009.01.1

Abstract

Milkfish is one of the most cultivated fish species in Indonesia because these fish have a high tolerance to the various environmental conditions of tropical waters and are resistant to many pests and diseases. This preliminary research was conducted to analyze the amino acid composition contained in milkfish meat and its product. A total of 20 fresh milkfish were obtained from ponds in Sidoarjo, East Java, in September 2020. Amino acid composition and protein content were analyzed. Based on its protein content, milkfish has been classified as a source of high protein. The amino acid profile of milkfish consists of approximately 17 types of amino acids. Glutamic acid, the amino acid present in the highest concentration, makes milkfish very popular.
The Effectiveness and Distribution of Fishing Light Attractors on the Stationary Lift Net Fuad fuad; Mimit Primyastanto; Doddy Pranowo; Eka Maulana; Wahida Kartika Sari; Supriyadi Surpiyadi
Research Journal of Life Science Vol 9, No 1 (2022)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rjls.2022.009.01.2

Abstract

A stationary lift net requires an effective fishing light attractor. The intensity and distribution of light are important factors to increase the effectiveness of fishing light attractors. This study aimed to probe the distribution of light intensity and its effect on the effectiveness of fishing light attractors. This research employed a descriptive-comparative method by comparing the effectiveness of LED lights with kerosene lights. The results showed that the concentration of fish school in LED lights was at a depth of 4–10 m with a light intensity of 1x10-8– 10x10-8W/cm2, while the kerosene lights was deeper than LED lights at a depth of 8–12 meters with a light intensity of 1x10-8– 10x10-8W/cm2. The distribution of fish schools from LED lights tends to be concentrated and form larger schools than kerosene lights. The optimum light intensity of LED and kerosene lights was almost the same, in the range of 1x10-8– 10x10-8W/cm2, with concentrations of fish schools reaching 65% and 64%, respectively. The total catch of LED lights fish during eight fishing trips was 168.5 kg or an average of 21.06±2.32 kg/trip, while the total catch of kerosene lights was 139.6 or an average of 17.5±1.98 kg/trip.
Fourier Transform Infrared (FTIR) Spectroscopy Method for Fusarium solani Characterization Ifa Maulidah Hasanah; Mintarto Martosudiro; Luqman Qurata Aini; Kestrilia Rega Prillianti; Matheus Randy Prabowo
Research Journal of Life Science Vol 9, No 1 (2022)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rjls.2022.009.01.3

Abstract

The detection and identification of microorganisms using spectroscopy techniques promise to be of great value because of their sensitivity, rapidity, low expense, and simplicity.  In this study, we used FTIR spectroscopy for the characterization of Fusarium solani. PCR amplification of DNA extracted from these isolates showed the possibility of amplifying PCR products with sizes 559 bp using the ITS1-ITS4 primers. Based on phylogenetic tree analysis, the isolate of F. solani showed a closely relationship to Fusarium solani isolate MN (MH300495.1) with 99.63% similarity.  The study is focused on the carbohydrate structure which can be analyzed in the range of 900 to 1200 cm-1 of FTIR wavenumber.  The spectra of our samples share similarities with one another, although small differences occur in the absorbance value. The band at 1027 cm-1 is assigned to the C-O stretching of glycogen. Meanwhile, at 1042 cm-1 is interpreted as carbohydrate C-O stretching as well. The band around 1073 cm-1 might arise from both chitin C-C stretching and phosphate stretching of nucleic acids. Other vibrations associated with chitin are also found at 1115 cm-1 and 1151 cm-1 which are assigned to C-O-C symmetric stretching and C-O-C asymmetric stretching, respectively.
Diversity of Ant Spesies (Hymenoptera: Formiciidae) in Refugia Plants Combination on Ratoon Sugarcane Rabbiana Mawaddah; Bambang Tri Rahardjo; Gatot Mudjiono
Research Journal of Life Science Vol 9, No 1 (2022)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rjls.2022.009.01.4

Abstract

This research aims to examine the effects of several refugia plant treatments on the diversity and number of ants in the ratoon sugarcane system. The diversity and abundance of ants in the plantation's surrounding habitats can fluctuate. Three combinations of flowering plants were used in the study: Turnera subulata Sm (Malpighiales: Passifloraceae), Cosmos sulphureus (Asteraceae: Asteraceae), and Zinnia elegans Jaqc (Asterales: Asteraceae). Ant samples were collected using yellow sticky traps and traps and yellow pan traps. R. software was used to examine all of the data. 4 subfamilies, 14 genera, and 25 species: Diacamma sp., Technomyrmex sp., Camponotus sp.1., Iridiomyrmex sp., Delichoderus sp., Leptogenys sp.; Odontomachus sp., Polyrachis sp., Pheidole sp., Tetramorium sp., Monomorium sp., Crematogaster sp., Oecophylla smaragdina was identified from the report's results, this included 1-86 individuals. Tetramorium sp. and Odonthomachus sp. were the most common ants found at the study site. Even before compared to the other treatments, the combination of refugia and Z. elegans, C. sulphureus, T. subulata treatment used to have a significant impact on the presence of ants, increasing the population by 21%. This study discovered that combining refugia could increase ant diversity in ratoon sugarcane. The diversity index value for all treatments was almost the same, in the range of 2.-9-2.82, indicating that the main composition of refugia was moderately diverse.
Yield and Its Components of Shallot (Allium ascalonicum L.) Influenced by the Application of Amino Acid Fertilizer And Triacontanol Anggara Ista Putra; Budi Waluyo; Ellis Nihayati
Research Journal of Life Science Vol 9, No 1 (2022)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rjls.2022.009.01.5

Abstract

Shallot are one of the agricultural products with a relatively high demand for the consumer market in Indonesia, but the productivity figure is relatively low compared to other countries (FAO, 2021). This study seeks to explore the effectiveness of the application of amino acid fertilizer and triacontanol in increasing the yield and yield components of shallot. The study was conducted in Karangploso District, Malang, from April to August 2021. In a randomized block design, this study used two factors: amino acid fertilizers (A1: 1 g plot-1; A2: g plot-1; A3: 5 g plot-1) and triacontanol (T0: 0 ppm; T1: 5ppm; T2: 10 ppm). Each combination was repeated three times. As a result, amino acid fertilizers can significantly affect the number of shallot bulbs, yields per hectare, economic weight, and economical weight loss. A significant effect was seen in the application of triacontanol on shallot yields per hectare and economic weight. The interaction of characters of bulb length was shown in the combination of 5-10 ppm triacontanol with amino acid fertilizer. The best response ranged from 10.64% to 11.67% in fertilizer with 5 g plot-1 of an amino acid fertilizer. As the doses of amino acid fertilizer in combination with triacontanol increased, the total bulb fresh weight grew as well, in which 5 g plot-1 of amino acid fertilizer could increase the weight by 45,23-45,43 g clump-1, which was greater than the response of the 1 g plot-1 amino acid fertilizer combination.

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