cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Titania T Nugroho
Contact Email
titania.nugroho@lecturer.unri.ac.id
Phone
+62811764031
Journal Mail Official
natur@ejournal.unri.ac.id
Editorial Address
Gedung LPPM Universitas Riau Jl. HR Subrantas Km 12,5 Pekanbaru 28293
Location
Kota pekanbaru,
Riau
INDONESIA
Jurnal Natur Indonesia
Published by Universitas Riau
ISSN : 14109379     EISSN : 25030345     DOI : http://dx.doi.org/10.31258/jnat
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry
JURNAL NATUR INDONESIA terbit sejak tahun 1998, merupakan jurnal ilmu sains yang menyajikan artikel mengenai hasil penelitian, pemikiran dan pandangan dari peneliti dan pakar dalam bidang biosains (ilmu dasar), meliputi biologi, fisika, kimia dan matematika. Jurnal Natur Indonesia melibatkan mitra bestari yang menelaah setiap artikel sesuai dengan bidang ilmunya. Nama dan asal institusi mitra bestari tersebut tercantum pada halaman bagian normor 2 dari setiap volume penerbitan. Jurnal ini diterbitkan setahun dua kali, pada bulan April dan Oktober.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 242 Documents
 20   21   22   23   24 
Inhibition Test of Hot Water Extract of Rhizophora apiculata Leaves Against Edwardsiella tarda Bacteria in-Vitro Kurniawan, Ronal; Wahyuni, Sri; Armando, Fitrian
Jurnal Natur Indonesia Vol 20, No 1 (2022): April 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.1.30-34

Abstract

One of the plants that have the potential as antibacterial ingredients is Rhizophora apiculata leaf because it contains secondary metabolites, such as tannins, saponins, flavonoids, steroids, and terpenoids. This study aims to find out the inhibition of hot water extract of R. apiculata leaves in inhibiting the growth of Edwardsiella tarda. The research method used is an experimental method which includes sample preparation, extraction, antibacterial activity test using the Kirby-Bauer disc method and applying a Completely Randomized Design (CRD). The doses used were 100% (10000 ppm), 90% (9000 ppm), 80% (8000 ppm), 70% (7000 ppm), 60% (6000 ppm), 50% (5000 ppm), 40% (4000 ppm), 30% (3000 ppm), 20% (2000 ppm), 10% (1000 ppm) and control (Oxytetracycline). The results showed that the hot water extract of R. apiculata leaves at a dose of 1000-10000 ppm gave various inhibitory diameters ranging from 6.25-10.08 mm and the clear zone formed was classified as medium
The Productivity Improvement and Population Development of Payakumbuh Duck Using a Simple Aspirator Tool on Artificial Insemination (AI) Technology Nova, Tertia Delia; Suhartati, Suhartati; Azhar, Azhar
Jurnal Natur Indonesia Vol 20, No 1 (2022): April 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.1.1-8

Abstract

This study aimed to determine the effect of IB frequency using different simple aspirator on fertility, weight loss and hatchability of Payakumbuh  duck (Anas platyrhynchos domestication) eggs. This study used 8 male and 20 female ducks, 90% egg production. In this study, all hatched the hatched eggs. This study used an experimental method with a completely randomized design (CRD) with 4 treatments and 5 replications. The treatments consisted of: P1 is 1 x 2 days, P2 is 1 x 4 days, P3 is 1 x 6 days, P4 is 1 x 8 days; the parameters observed were fertility, weight loss and hatchability. The results of the analysis of variance showed that different AI frequencies had a significant effect (P < 0.05) on the fertility of hatching eggs, but had no significant effect (P > 0.05) on weight loss and hatchability. It can be concluded that P2 had a significant effect (P < 0.05) on fertility because fertile eggs were higher than other treatments. The characteristics of Payakumbuh ducks (Anas platyrhynchos domestication) spermatozoa are milky white and yellowish white, thick and watery consistency, specific odor, volume 0.24±0.05 ml, pH 7.37±0.51, mass movement +, ++ and +++, live percentage 79.06±3.68%, concentration 2.342 billion cells/ml, motility 75.00±7.56% and abnormality 12.06±0.82%. The results of the analysis of variance showed that different AI frequencies had a significant effect (P < 0.05) on the fertility of hatching eggs, but had no significant effect (P > 0.05) on weight loss and hatchability. The frequency of IB 1 x 4 days had the highest fertility rate, namely 67.72 ± 7.99%. A simple Aspirator can function properly with the need for repairs and upgrades in several parts of the tool such as current source, and fan capacity
Bird Species Based on Tree Height Perched in the Liwa Botanical Garden, West Lampung Regency Putra, Bagus Susilo; Kanedi, M.; Nurcahyani, Nuning; Susanto, G. Nugroho
Jurnal Natur Indonesia Vol 20, No 1 (2022): April 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.1.9-14

Abstract

Birds are one of the most diverse animals in the world, especially in Indonesia. Liwa Botanical Garden located in Pekon Kubu Perahu, Balik Bukit District, West Lampung Regency, is a conservation area with the theme of conservation and development of ornamental plants, representing the flora of Southern Sumatra. This research is a continuation of the collaboration between the Department of Biology and Balitbang UPTD Liwa Botanical Garden, West Lampung Regency. The presence of birds in the Liwa Botanical Garden is also a bioindicator of biodiversity for the environment in this area. By maintaining the presence of birds in the Liwa Botanical Garden means protecting their habitat and existing plants. The purpose of this study was to determine the species of birds based on the height of the perched trees in the Liwa Botanical Garden and the abundance of their species. The method used in this research is the point count with the observation time for 9 days in the morning and evening at the height of the tree in 3 different observation stations. Birds on KRL are mostly found on perches at an altitude of 2 - 7 meters, in the category of shrubs and trees, there are 19 out of 25 bird species found. The highest Relative Abundance Index (IKR) was Collocalia esculenta at 39.91% and the lowest IKR value was 7 bird species, each with 0.14% value. The conservation status of the 25 bird species based on IUCN is Least Concern (LC) and based on CITES there is one species that is included in Appendix II, namely Ictinaetus malayensis while based on the Regulation of the Minister of Environment and Forestry of the Republic of Indonesia No. P.20 / MENLHK / SETJEN / KUM.1 / 6/2018 there is one bird species that is included in the protection, namely species Ictinaetus malayensis
The Effect of Tofu Dregs Compost and NPK Fertilizer the Growth and Production of Purple Eggplan (Solanum melongena L.) Yulia, Arnis EN; Khoiri, M. Amrul; Yoseva, Sri; Nuraida, Nuraida
Jurnal Natur Indonesia Vol 20, No 1 (2022): April 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.1.15-23

Abstract

The research was aimed to see the effect interaction of giving tofu dregs compost and npk fertilizer to get the right dose towards growth and the highest production of purple eggplant. The research was conducted at Experimental Garden, Faculty of Agriculture, Riau University, Pekanbaru. The research was conducted for 5 months, from february to june 2020. The reasearch was conducted experimentally in 2 factors. The first factor was the of tofu waste compost consists of 3 levels (0, 10 and 20 ton.ha-1). The second factor was the of NPK fertilizer (0, 100 and 150 kg.ha-1) which consist  of nine treatments combination. The observed parameterswere  the height of the plant (cm),  the days of flowering (days), the days of harvesting (days), the  fruit length (cm), the fruit diameter (cm), the number of fruits per plant (fruit), the fruit weight per fruit (g), the fruit weight per plant (g) and the fruit weight with plot (g). The data  in this research was analyzed in using variance and followed by Duncan's multiple distance test at 5% level.  The results showed that tofu waste compost and NPK fertilizer increased the growth of eggplant such as  the height of the plant,  the days of flowering, the days of harvesting, the number of fruits per plant, the fruit length, the fruit weight per fruit, the fruit weight per plant and the fruit weight with plot and does not increase fruit diameter. The giving tofu waste compost at a dose  20 ton.ha-1  and NPK fertilizer 150 kg.ha-1  gave the best eggplant growth and production until the plants were 90 DAP
Types of Invasive Plants and Threats to Animal Conservation in National Park Putra, Bagus Susilo
Jurnal Natur Indonesia Vol 20, No 1 (2022): April 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.1.24-29

Abstract

Invasive plants are plants that can interfere with other plant life because invasive plants use competition and harm the host they live on. Animal conservation is currently the focus of research so that biodiversity is always maintained in the National Park such as mantangan (Merremia peltata (L.) Merr.) Chromolaena odorata (L), Stachtarpheta jamaicensis. Based on the way of life and rapid reproduction of this invasive plant, it disturbs the habitus of other plants in developing so that it can damage the food chain in the National Park. Conservation of animals in National Park must be in line with the conservation of the surrounding ecology so that the natural ecosystems in the National Parks and biodiversity are fully preserved.
Maintenance of Bilge Pump on Ship Trawl SPL IX Owned PT. Sinar Pesona Laut Muhammad Al Mu&#039;Min Saridu; Boby Wisely Ziliwu
Jurnal Natur Indonesia Vol 20, No 2 (2022): Oktober 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.2.35-40

Abstract

A pump is a machine or device that raises liquid from a low surface to a higher surface or moves liquid from a low-pressure to a high-pressure area. A centrifugal pump is a machine or equipment used to provide energy to a fluid (liquid) based on the centrifugal force generated by a rotating impeller. So that the liquid can be moved or moved from one place to another. As it receives energy through the impeller, the fluid velocity will increase. This kinetic energy is then converted into compressive energy by the pump housing (casing) in the form of a spiral (volute) or a centrifugal pump or fixed blades (diffuser) surrounding the impeller so that the liquid exits the pump at a high speed. The maintenance method for the bilge pump auxiliary machine is carried out in 6 stages, namely, the first stage opening the filter box, the second stage removing the inner filter and filter box cover gasket, the third stage installing new anti-rust on the inside of the filter box cover, the fourth stage removing the box filter connecting faucet and the bilge pump pipeline, the fifth stage opens the connection of the pipe and the bilge pump, the sixth stage ensures that all components of the bilge pump are firmly installed and perform operational test
Response of Light Intensity to The Carotenoid Content of Sea Grape Caulerpa sp. Rina Rosnawati; Nunik Cokrowati; Nanda Diniarti
Jurnal Natur Indonesia Vol 20, No 2 (2022): Oktober 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.2.41-49

Abstract

Caulerpa sp. is a green alga that grows naturally in Indonesian waters. Caulerpa sp. grows in shallow seas with calm currents and attaches to coral substrates or sand substrates and rock fragments. In Indonesia, this alga is widely used as a food ingredient. Caulerpa sp.  Contains lignan which is beneficial to human health, namely its ability to prevent the growth of cancer cells. This study aims to determine the difference in the number of carotenoids in Caulerpa sp. with different light intensities using controlled containers at the Laboratory of Fish Production and Reproduction, University of Mataram. The method used was experimental with a Randomized Block Design (RAK) with 30 days of maintenance. The results showed the growth of Caulerpa sp. highest in treatment D (3 light 3000 lux) with an average absolute growth of 80 g, specific growth of 0,92 %, stolon length of 6,4 cm, and the highest carotenoid content. The lowest growth value was in treatment A (1 light 500 lux) with an absolute growth value of 35 cm, specific growth of 0,44%, stolon length of 4,6 cm, formula length 2,6 carotenoid content of 0.15 mg/g
Inhibition Zone Test of Chaetomorpha sp. Extract Against Aeromonas hydrophilla and Vibrio sp. Bacteria Sri Wahyuni; Mohamad Gazali; Ronal Kurniawan
Jurnal Natur Indonesia Vol 20, No 2 (2022): Oktober 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.2.50-54

Abstract

Chaetomorpha sp. is a green algae that has anti-bacterial compounds and at certain times found very much. The purpose of this study was to see the inhibition zone produced from the ethanol extract of Chaetomorpha sp. against A. hydrophilla and Vibrio sp. This research was done in March 2022. Extraction of Chaetomorpha sp., antibacterial effectiveness testing was done at the Biotechnology Laboratory, Faculty of Fisheries and Marine, Riau University. The method used is descriptive method. Sensitivity test was performed using the Kirby Bauer disc method. To reduce the error rate, it was repeated three times. The doses of macroalgae extract used were, doses of 100% (10,000 ppm), 90% (9,000 ppm), 80% (8,000 ppm), 70% (7000 ppm), 60% (6000 ppm), 50% (5000 ppm), 40 % (4000 ppm), 30% (3000 ppm), 20% (2000 ppm), 10% (1000 ppm) and control (Oxytetracycline). Based on the observations, it was found that the use of ethanol extract of Chaetomorpha sp. The result is able to inhibit the growth of bacteria A. hydrophilla and Vibrio sp. at the highest dose (10000 ppm) in an range of 13.5 -14.5 mm which was classified as strong category, the lowest dose was at 5000 ppm as moderate category.
The Effects of Turmeric Powder Addition in Fish Feed toward Hematology of Common Carp (Cyprinus carpio) Putri Pridayem; Windarti Windarti; Dian Fitria M
Jurnal Natur Indonesia Vol 20, No 2 (2022): Oktober 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.2.55-63

Abstract

Turmeric (Curcuma longa) contains curcumin that can be used to improve the health as well as the immune system of the fish. The health and immune system condition of the fish can be predicted based on the hematology of the fish. A study that aims to understand the effects of turmeric addition in fish feed pellets on the hematology condition of common carp has been conducted from March to May 2022. The turmeric powder was mixed well with the feed pellets and the dosages of the turmeric powder were as follows: 0 (Control, no turmeric addition), P1 (0.5 g/kg), P2 (1 g/kg), and P3 (1.5 g/kg). The fish was reared in circular plastic containers (25 L), completed with an aerator and circulation pump) for  49 days, 15 fish/ container. During the research, the fish was fed 3 times/ day, at satiation. Samplings were conducted 2 times before the treatment was applied and by the end of the experiment (the 49th day). Results show that the addition of turmeric powder in the fish feed pellets clearly affects the hematological of the fish. Fish that was fed with turmeric-enriched pellets showed a higher percentage of lymphocyte and which means that the immunity of the fish is improved. The best treatment P3 showed 81.55% lymphocyte, 6.55% monocyte, 5.44% neutrophil, and 5.44% thrombocyte. Data obtained indicate that the fish fed with turmeric pellets perform better in hematological conditions than the fish with no turmeric-enriched pellets.
Histopathology of the Gill of Pangasianodon hypophthalmus that were Fed with Fermented Red Ginger to Prevent Motile Aeromonas Septiceamia Disease Muhammad Arga Saputra; Morina Riauwaty; Henni Syawal
Jurnal Natur Indonesia Vol 20, No 2 (2022): Oktober 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.2.64-72

Abstract

Red ginger is a natural ingredient that contains several antibacterial compounds such as essential oils, flavonoids, terpenoids, phenols, and zingiberene. This research was conducted from June to August 2021. The purpose of this study was to analyze the structure of the gill and liver tissue of jambal siam fish and to obtain the best dose of adding fermented red ginger to the feed before and after being challenged with Aeromonas hydrophila bacteria. The method used is an experimental method using a one-factor Completely Randomized Design (CRD) with five treatment levels and three replications, namely: Feeding without fermentation of red ginger and without being tested against A. hydrophila (Kn), Feeding without fermentation of red ginger and tested against A. hydrophila (Kp), Feeding with a dose of 150 mL/kg (P1), dose 175 mL/kg feed (P2), dose 200 mL/kg (P3). The results showed that the structure of the gill tissue of Jambal Siam fish showed damage such as hypertrophy, hyperplasia and bent lamellae. The best results were found in the P2 treatment, a  dose of 175 mL/kg feed and tested against A.hydrophilla bacteria

Page 22 of 25 | Total Record : 242

 20   21   22   23   24 

Filter by Year

2007 2023


Reset
Filter By Issues
All Issue Vol 21, No 1 (2023): April 2023 Vol 21, No 2 (2023): October Vol 20, No 2 (2022): Oktober 2022 Vol 20, No 1 (2022): April 2022 Vol 19, No 2 (2021): Oktober 2021 Vol 19, No 1 (2021): April 2021 Vol 18, No 2 (2020): oktober Vol 18, No 1 (2020) Vol 17, No 2 (2019) Vol 17, No 1 (2016) Vol 16, No 2 (2016) Vol 16, No 1 (2014) Vol 15, No 2 (2013) Vol 15, No 1 (2013) Vol 14, No 3 (2012) Vol 14, No 1 (2012) Vol 14, No 1 (2011) Vol 13, No 3 (2011) Vol 13, No 2 (2011) Vol 13, No 1 (2010) Vol 12, No 2 (2010) Vol 12, No 1 (2009) Vol 11, No 2 (2009) Vol 11, No 1 (2008) Vol 10, No 2 (2008) Vol 10, No 1 (2007) More Issue