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INDONESIA
Jurnal Natur Indonesia
Published by Universitas Riau
ISSN : 14109379     EISSN : 25030345     DOI : https://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 published since 1998, is a science journal that presents articles on research results, thoughts and views from researchers and experts in the field of biosciences (basic science), including biology, physics, chemistry and mathematics. In the field of biosciences (basic science); Biology, Physics, Chemistry, Mathematics.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 306 Documents
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Optimalization of GA3 Concentration and Soaking Time to Increase Seed Germination of Phyllanthus niruri L. Seftiani, Shalma; Sujarwati, Sujarwati
Jurnal Natur Indonesia Vol 18, No 2 (2020): oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.18.2.69-75

Abstract

Phyllanthus niruri L. is a medicinal plant that has been developed as phytopharmaca. The efforts to cultivate P. niruri need to be done to fulfil the large-scale and sustainable needs as raw material for traditional medicine. Propagation of P. niruri using seeds is still a problem, because the seeds have low seed germination. One of the plant hormones that play an important role in germination is gibberellins (GA3). This study aimed to determine the effect of concentration of GA3, soaking time, and the interaction of both factors on P.niruri seed germination, and determine the optimal concentration of GA3 and soaking time to increase germination of P.niruri seeds. It was arranged in a factorial completely randomized design with two factors. The first factor was the concentration of GA3 i.e 0, 300, 310, 320, 330, 340, 350, 360 ppm. The second factor was the soaking time i.e 6, 12, 18, and 24 hours. The parameters observed were the percentage of germination, germination time, and vigour index. Data were analyzed using ANOVA and DMRT (α = 0,05). The result showed that the interaction between GA3 concentration and soaking time had significantly affected the percentage of germination and vigour index. Soaking seeds in GA3 concentration of 360 ppm for 18 hours is the optimal treatment that produces a percentage of germination was 83.33%, germination time was 3.38 days, and vigour index was 2.74 seeds/day
Antihyperglycemic Test of Ethanol Extract of Soursop Leaf (Annona muricata L.) on Blood Sugar Levels of Male Mouse (Mus musculus) Induced by Glucose Kusuma, Gusti Putu Okapanji Reza
Jurnal Natur Indonesia Vol 19, No 1 (2021): April 2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.19.1.1-5

Abstract

Soursop leaf (Annona muricata L.) is an herbal plant that is widely used by the public empirically because it has many properties. The sling leaf contains tannin compounds, alkaloids, as well as several other chemical compounds including annonaceous acetogenin, which can be used as a treatment. This study aims to find out if soursop leaf extract has the effect of deducting blood glucose levels in mice test animals (Mus musculus) which induced a 50% glucose solution. The study used the RAL method (complete random design) and 20 male mice were divided into 5 groups with 4 repetitions. Group P1, P2, and P3 (treatment group) administered ethanol extract of sine leaves at doses of 250, 500, and 750 mg/kg bb respectively, while k- and k+ (control group) administered CMC 0.5% and glibenclamide with oral administration. The data obtained were statistically analyzed with ANOVA (Variance analysis) one-way to find out the differences between treatment groups and continued with the BNT test (The smallest real difference) to find out meaningful differences between groups. The results showed that there were differences between the treatment group and the control group. On the 7th day of the BNT test, the treatment group with a dose of 750 mg/kg bb showed significant differences between the negative Control group (CMC 0'5%), Positive control (Glibenclamide), P1 (250 mg/kg bb), and P2 (500 mg/kg bb), while on the 14th day showed no significant difference with the treatment group of 500 mg/kg bb. concluded from this study that all concentrations of ethanol extract of sling leaves could lower blood glucose levels in test animals, with the most optimal decrease being the group at a dose of 750 mg/kg bb.
Abundance and Distribution Patterns of Gastropods in the Intertidal Bay of Kambang Lengayang Sub-District, Southern Coastal District, West Sumatera Harif, Ichwanul; Tanjung, Afrizal; Elizal, Elizal
Jurnal Natur Indonesia Vol 19, No 2 (2021): Oktober 2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.19.2.37-42

Abstract

This study aims to determine the abundance and distribution pattern of gastropods in the intertidal bay, Kambang Lengayang District, Pesisir Selatan Regency, West Sumatra. The benefits of this research are expected to be a reference or information for further research in Kambang Bay which in the end is expected to minimize the adverse effects of gastropod hunting. The research method used in this study is a survey method, namely direct observation and sampling which is divided into 3 stations where the sampling station 1 is taking in the coastal waters of the bay in an area where there is no community activity, station 2 is taking in the waters of the bay in the fishing trawl area. station 3 taking in the coastal waters of Kambang in the reclamation area. Based on the analysis of organic sedimentary material in the study area, the average value was obtained at station 1 (3.55%), station 2 (4.20%) and station 3 (3.33%). Based on the analysis, the sediment fraction that dominates each station is sand. The gastropods found at the study site were Clypeomorus bifasciata, Littoraria scabra and Cerithulata cingulata. The abundance of gastropods in the coastal waters of Kambang ranged from 2.33 to 5.00 Ind/m2. The results of the ANOVA test showed that the abundance of gastropods in the bay waters showed 0.214 beaches, indicating that the difference in abundance between stations was not significant. The gastropod pattern found at the study site is generally in groups.
The Role of Kolkisin in Multiplication of Planlet Banana Kepok Abu Poliploidi in Vitro Sartika, Dewi; Agustrina, Rochmah; Ernawiati, Eti; Irawan, Bambang
Jurnal Natur Indonesia Vol 18, No 2 (2020): oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.18.2.76-81

Abstract

Bananas are one of the horticultural crops of the fruit group that have quite high social and economic value. One type of banana that is very popular is the pisang kepok. The main obstacle in pisang kepok  production is the availability of seedlings. The above constraints can be overcome by propagation of banana seedlings using tissue culture techniques by adding colchicine to the tissue culture media. Colchicine is often used to improve plant quality. This study aims to determine the effect of adding colchicine to the media on the growth and formation of pisang kepok abu plantlet. The study was conducted from November 2019 - February 2020 at the MTC Laboratory, PT Great Giant Pineapple PG 4, East Lampung. The concentration of colchicine added to the media was 0.1%. The growth and development of plantlets produced from media with colchicine treatment will be compared with plantlets from the control group. The tests were repeated 10 times. The results showed that the growth and formation of pisang kepok abu plantlets from the treatment of colchicine were lower than the growth and formation of the pisang kepok plantlets in the control group.
Leukocytes Differentiation of Goldfish (Carassius auratus) Infected with Aeromonas hydrophila Bacteria and Post-treatment with Propolis Solution Riswan, M.; Lukistyowati, Iesje; Syawal, Henni
Jurnal Natur Indonesia Vol 19, No 1 (2021): April 2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.19.1.6-12

Abstract

This study aims to determine the best dose of propolis to treat Carassius auratus infected with Aeromonas hydrophila seen leucocyte differentiation from C.auratus. The method used was experimental method with Completely Randomized Design (CDR) with one factor consisting of five treatment levels and three replications. The treatment was Kn (not infected with A. hydrophila and untreated propolis), Kp (infected with A. hydrophila but not treated with propolis), and fish infected with A. hydrophila treated propolis with dose P1 (700 ppm), P2 (800 ppm), and P3 (900 ppm). Treatment is done by injection of propolis in fish infected by A. hydrophila in intramuscular. The fish used are 8-10 cm in size and kept for 14 days post-infection. The results showed that propolis solution has been able to treat C. auratus from infected A. hydrophila. The dose of propolis 800 ppm is the best dose to treat C. auratus infected A.hydrophila, seen from leukocyte differentiation (lymphocyte 80,25%, monocytes 10,09% and neutrophils 9,66%).
Genetic Change of Pharella acutidens Influenced by Pb and Cd Metals in Rupat Strait Waters Ginting, Tri Vani Bernadetha; Nasution, Syafruddin; Effendi, Irwan
Jurnal Natur Indonesia Vol 19, No 2 (2021): Oktober 2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.19.2.43-50

Abstract

Rupat Strait related to the Strait of Malacca is a national and international shipping lane and makes the region affected by anthropogenic activities that result in a decrease in the quality of the waters such as the increasing amount of heavy metal content. The most easily contaminated  organism of heavy metals is bivalves due to and its low mobility, bivalves being filter feeders, and the ability to accumulate contaminants,. The purpose of  this study was to look at genetic changes in bivalves  (P.acutidens) contaminated by heavy metals. The study was conducted from February to March 2021. Bivalve sample was collected from the waters of Rupat Strait and sample analysis was conducted in the Marine Biology Laboratory and Genetics Laboratory of Riau University. Bivalve DNA is isolated with Geneaid Tissue Genomic DNA Mini Kit. DNA isolation results were then carried out PCR process and sequencing process was carried out in PT. Genetika Science Indonesia. The results of study show that sequencing results obtained by samples derived from Selinsing have the most changes in the composition of nitrogen bases compared to samples from the other two stations.
Efforts to Increase the Power Seed Germinantion of Andaliman (Zanthoxylum acanthopodium DC) with Cemical Scarification using Sulfuric Acid (H2SO4) Shofyani, Enda; Sujarwati, Sujarwati
Jurnal Natur Indonesia Vol 18, No 2 (2020): oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.18.2.82-91

Abstract

Zanthoxylum acanthopodium DC. Belongs to the Rutaceae family commonly used for cooking spices and medicinal plants and has the potential to be developed in the pharmaceutical and food industries. Publication on aspects of cultivation is still limited, and generative propagation using seeds is still a problem because the seeds have low seed germination. This happens because the seeds experience dormancy and have a hard seed coat structure. This research aims to know the effect of H2SO4 concentration and soaking time, and the interaction of both factors on Z.acanthopodium seed germination, and determine the optimal concentration of  H2SO4 and soaking time to increase the germination of Z. acanthopodium seed. This study used a Factorial Completely Randomized Design with two factors. The first factor is the concentration of H2SO4 0, 25, 50, 75, and 100%, and the second factor is the soaking time of 15, 30, 45, and 60 minutes followed by soaking in water for 24 hours. The parameters observed were the percentage of germination, germination time, and vigor index. The observation data obtained were discussed descriptively. The results showed that the treatment of seeds soaking in H2SO4 at concentrations of 0%, 25%, 50%, 75%, and 100% with a soaking time of 15 minutes, 30 minutes, 45 minutes, and 60 minutes was not able to increase the germination power of andaliman seeds Z. acanthopodium. Soaking seeds in 75% H2SO4 for 60 minutes resulted in a germination percentage of 6.67%, a germination time of 7 days, and a vigor index of 0.05 seeds /day.
Antibacterial activity of Rhizophora apiculata leaf extract against Edwardsiella tarda bacteria Kurniawan, Ronal
Jurnal Natur Indonesia Vol 19, No 1 (2021): April 2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.19.1.13-17

Abstract

Aquaculture production is vulnerable to adverse impacts to disease and environmental conditions. One of the pathogenic bacteria that infection cultured is Edwardsiella tarda. The aim of this study was to find out the sensitivity of R.apiculata leaf extract in inhibiting the growth of E.tarda. The research method used is the experimental method, with the Kirby-Bauer disc method. 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), blank discs used were 6 mm in size. The results showed that the ethanolic extract of the leaves of R. apiculata at a dose of 1000-10000 ppm gave various inhibitory diameters ranging from 6.27-9.87 mm and presenting inhibition zone diameters in the medium category
Analysis of Microplastics on Sediments in the Waters of Selat Panjang of Tebing Tinggi Subdistrict, Meranti Islands Regency, Riau Province Pasaribu, Ridwan Saiful Basri; Nedi, Syahril; Elizal, Elizal
Jurnal Natur Indonesia Vol 19, No 2 (2021): Oktober 2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.19.2.51-56

Abstract

The study was conducted from March to May 2021 which aims to identify the types, abundance of microplastics and compare the abundance of microplastics between stations in the waters of the Long Strait of High Cliff Subdistrict. Survey methods are applied and PVC pipes are used to collect sediment samples from three different stations with three sampling points at each station. The types of microplastics found are fragments with the most jumblah with film and fiber. The most widely found types are fragments, followed by film and fiber. The abundance of microplastics at Tanjung Harapan Port (5900.00 partkels /kg of dry sediment) is higher than the mouth of the Dorak coastal river (5306.67 partkels/kg of dry sediment) and Banglas Village Mangrove Ecotourism (4120.00 partikels/kg of dry sediment). The results showed that the abundance of microplastics between stations differed significantly. Microplastic differences based on further independent test samples t-test showed that each station compared to mangrove ecotourism area will be significantly different, while between Tanjung Harapan Port and the mouth of the Dorak coastal river showed no significant difference
Moth Variation using 3 Kinds of Pineapple, Banana, and Tapai as Bait in Liwa Botanical Garden Kinanti, Astrid Febi; Nukmal, Nismah; Pratami, Gania Dania; Kanedi, M.
Jurnal Natur Indonesia Vol 18, No 2 (2020): oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.18.2.92-100

Abstract

Moths are insects that belong to the Lepidoptera Ordo. Moths are attracted to volatile compounds. The examples of volatile compounds include alcohol, urea, and acetic acid. Pineapple, banana and tapai are three types of bait that will be used in this study, because all three types of bait contain volatile compounds in the form of scents that strong enough to attract moths. Liwa botanical garden is a recreational and educational place, located in West Lampung district, which was only approved by the Regional Government in 2007. Because there is onlya view data on the presence of moths, so it needs to conduct the research to know the variation types of moths that exist in Liwa botanical garden, West Lampung. This research is a Quasy Experiment with 3 kinds of baits, there are pineapple, banana, and tapai as a treatment with 5 replications in the form of sampling time. The result obtained that in AraceaeLiwa Botanical Garden were obtained by six families, nine genera, and nine species of moth. Nine species of moths are Nemophora sp, Nematopogon sp, Brahmaeawallichii, Rhodogastriaamasis, Creatonosgungis, Sundasceliaepelys, Rheumaptera sp, Noctua sp, and Epicnopterix sp

Page 21 of 31 | Total Record : 306

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