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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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Transepidermal Water Loss Value Comparison Between Tengkawang and Durian Seed Oil Lotion Febriaty, Irma Ramadhani; Usman, Thamrin; Alimuddin, Andi Hairil
Jurnal Natur Indonesia Vol 18, No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (860.444 KB) | DOI: 10.31258/jnat.18.1.20-30

Abstract

Body epidermis has an important health function to prevent body dehydration. This research aims to compare Transepidermal Water Loss (TEWL) values between durian seed oil and tengkawang oil. Skin that had been applied with tengkawang oil and durian seed oil lotion were tested for irritation and TEWL values. The tengkawang oil had an acid number of 17 g/mol and contained  8.54 % free fatty acid, while the durian seed oil had an acid number of 6.34 g/mol and contained 2.89 % free fatty acid.  Irritation testing was done using lotion containing 100 % of each oil. TEWL analysis on skin applied with the tengkawang oil lotion after 1 hour showed that the lotion could reduce epidermal water evaporation by 35.23 % compared to the skin condition before treatment.  Epidermal water evaporation reduction at the second, third and fourth hours after the tengkawang oil lotion application was 31.33 %, 33.93 % and 27.9 %, respectively. TEWL analysis on skin applied with the durian seed oil lotion after 1 hour showed that the lotion could reduce epidermal water evaporation by 11.34 % compared to the skin condition before treatment.  Epidermal water evaporation was reduced 14.64 %, 10.53 % and 2.99 % at the second, third and fourth hours after application of the durian seed oil. Based on these results, it can be concluded that tengkawang oil gives better TEWL values compared to durian seed oil.
Fractionation of Garcinia Mangostana Fruit Pericarp Cellulase Assisted Extracts by Preparative Thin Layer Chromatography and High Performance Liquid Chromatography Nugroho, Titania Tjandrawati; Puja, Krisna; Eryanti, Yum; Miranti, Miranti
Jurnal Natur Indonesia Vol 18, No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (449.602 KB) | DOI: 10.31258/jnat.18.1.31-42

Abstract

The polar extract of Mangosteen (Garcinia mangostana) fruit pericarp obtained by cellulase assisted ethanol extraction has strong antioxidant activity, giving an average 2,2 diphenyl-1 pykrylhydrazyl (DPPH) radical  scavenging IC50 of 13.9 µg/mL. In order to elucidate the chemical component from this extract that is responsible for the high antioxidant activity, fractionation of the extract should firstly be performed. In this paper we show results of preparative fractionation of the polar extract by two methods, namely preparative Thin Layer Chromatography (PTLC) and preparative High Performance Liquid Chromatography (PHPLC). PTLC used Silica Gel G60 plates, with a hexane:ethyl acetate (6:4) eluent. PHPLC was a reverse phase method, using C18 column and water:acetonitrile gradient elution. 4 fractions from PTLC and 6 fractions from PHPLC were collected and their antioxidant activity analyzed. Both methods gave separated fractions with lower antioxidant activity than the unfractionated original crude extracts, showing that the strong antioxidant activity of Mangosteen pericarp polar extracts maybe due to the concerted synergetic effect of several compounds, rather than a single isolated compound. It also shows the high degree of difficulty in separating mangosteen pericarp polar components having antioxidant activity for further structural analysis.
Isolation, Characterization and Antibacterial Activities of Lactic Acid Bacteria Isolated From Batak's Special Food "Dali Ni Horbo” Nasution, Muhammad Hasan Basri; Ramadhani, Shafira; Fachrial, Edy
Jurnal Natur Indonesia Vol 18, No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (593.779 KB) | DOI: 10.31258/jnat.18.1.1-11

Abstract

Lactic Acid Bacteria (LAB) are gram-positive bacteria that are rod or round in shape, do not form spores, and do not have cytochromes. LAB can be isolated from fermented food products. LAB is useful to inhibit the growth of pathogenic bacteria so that they are potential antibacterial sources. The purpose of this study was to isolate LAB from the traditional food Dali Ni Horbo, continued with characterization, antimicrobial testing, and sensitivity testing towards several antibiotics. From the results of the study, the number of colonies obtained was 2.4 x 107 CFU/mL. 6 isolates were randomly selected, coded as isolates UPDH1, UPDH2, UPDH3, UPDH4, UPDH5, UPDH6, respectively. Biochemical characterization showed that the isolates were gram-positive and catalase-negative bacteria.  Results of antibiotic sensitivity testing using 6 antibiotics, namely amoxicillin (AML), erythromycin (E), oxacillin (OX), ofloxacin (OFX), cefotaxime (CTX), and gentamicin (CN), showed that all the isolates were resistant to CTX. The UPDH1 isolate was resistant to AML and OX. The UPDH3, UPDH5, and UPDH6 isolates were resistant to AML, and the UPDH4 isolate was resistant to E, OFX, CTX, CN, and OX. Antimicrobial tests used the disk diffusion method against Escherichia coli and Staphylococcus aureus. The UPDH2 isolate, gave an inhibition zone of 6.7 mm, and UPDH5 and UPDH6 gave inhibition zones of 7.6 mm and 8.5 mm respectively, against E. coli. Microbial inhibition tests against S. aureus by UPDH1, UPDH2, UPDH5 and UPDH6 gave inhibition zones of 13.5 mm, 9.0 mm, 12.1 mm and 12 mm respectively. From the results in this research it can be concluded that the traditional food Dali Ni Horbo is a potential source of probiotics.
Efficacy of Cellulolytic Bacteria Consortium for Composting Oil Palm Empty Bunches Containing Phytonutrients Aini, Diah Nurul; Linda, Tetty Marta
Jurnal Natur Indonesia Vol 18, No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (479.212 KB) | DOI: 10.31258/jnat.18.1.12-19

Abstract

Oil palm empty fruit bunches (OPEFB) are themost solid palm oil waste. OPEFB has often been processed into compost with the addition of certain activators. It is expected that with the addition of a consortium bioactivator composting of OPEFB can be faster and the compost produced has good nutrient content. The study aims was to determine the ability of bioactivator bacteria of cellulolytic consortium in degrading TKKS of incubation laboratory scale for 30 days. A consortium of compost bioactivator used were Bacillus sp. S43, Bacillus cereus strains of IARI-MB-6, Bacillus cereus strains TS11, Alcaligenes faecalis strains ZJUTBX11, Bacillus sp. 13847, Stenotrophomonas sp. S169-III-5, Alcaligenes faecalis strains KH-48 and Bacillus cereus strain Y22 by a comparison of 1:1:1:1:1:1:1:1. The results showed that bioactivator consortium was able to degrade OPEFB which on P4 (OPEFB + chicken manure + consortium isolate) reduced organic C from 50.1 to 34.5, increased total nitrogen from 0.73 to 1.35 and reduced the C/N ratio from 37.11 to 25.56 and produced compost phytonutrients and not phytotoxicity.
The Productivity of Duck in Different Temperature Cage Management Nova, Tertia Delia; Syahruddin, Erman; Zein, Rijal
Jurnal Natur Indonesia Vol 18, No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (479.919 KB) | DOI: 10.31258/jnat.18.1.43-61

Abstract

This study aims to determine the performance of  ducks on the effect of differences in cage temperature. This study used 54 5-week-old male ducks selected from 66 ducks. The research method used was randomized block design (RBD). The treatment used is the regulation of the temperature of the cage which is divided into three temperature levels, namely: A (cold temperature), B (room temperature), and C (hot temperature). The observed variables were duck performance in the form of feed consumption, body weight gain and feed conversion. The results of this study indicate that the difference in temperature of the cage became a very significant (P<0.01) on the consumption of rations, weight gain and conversion. The results of the study concluded that the maintenance of ducks at three different cage temperatures had a very significant (P<0.01) on feed consumption and body weight gain, but had no effect on feed conversion. The best results were found in the temperature of the cold cage with the consumption of rations of 2964.33 g/head, which resulted in body weight of 711.83 g/head of g/head, and conversion of 4.2. While the body weight of 1437 percentage of carcass was 67.64% in the study. The highest yield IOFC results (income over feed cost) cage in cold temperatures with a profit of Rp. 3,375.15/head. The maintenance of  ducks at three different cage temperatures had no significant effect (P>0.05) on the weight of the spleen, thyroid and kidney and the work of the spleen, thyroid and kidney organs was still normal
Comparative Morphometric Rhizophora ApiculataFlower and Fruit in Two Areas with Anthropogenic Activities in West Dumai Coastal, Dumai City, Riau Province Fernando, Muhammad Zebi; Efriyeldi, Efriyeldi; Mulyadi, Aras
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.19.1.23-28

Abstract

Morphometrics is a field that deals with variations and changes in the form (size and shape) of an organism or object. Anthropogenic is a human activity not only limited to the use or utilization of coastal resources, but also can be restorative and protective, thus causing complex disruption. The purpose of this study was to determine the morphometric differences of the flowers and fruits of R.apiculata mangroves in two regions with different anthropogenic activities in the mangrove ecosystem of Dumai City. This research was carried out in September 2019. From the results of the study it was found that in areas polluted by anthropogenic activity the average morphometrics of fruit (length and width) and leaves (length, width and length of the stems) Rhizophora apiculata were lower than those in the area not polluted by anthropogenic activity. At station I the oil content ranged from 0,0975 to 0,1251 ppm classified as polluted and at station II ranged from 0,072 to 0,111 ppm classified as not polluted.
The Effect of Ethanol Extracts of Jeruju (Holy Mangrove) Leaves (Acanthus ilicifolius L.) and Taurine on Hematopoiesis Profiles of Mice (Mus musculus L.) Induced by Alloxan Ardiansyah, Budi Khoiri; Widiastuti, Endang Linirin; Nurcahyani, Nuning; Sutyarso, Sutyarso
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.18.2.62-68

Abstract

The high exposure to free radicals and glucose blood levels in diabetes potentially damage the body cells and decrease body immune status that is shown by changes in the number of blood cells that can cause complications. The purpose of this research was to study the effect of ethanol extracts of jeruju (holy mangrove) leaves (Acanthus ilicifolius L.) and taurine on hematopoiesis profile by measuring the number of erythrocytes, the number of leukocytes and the leukocytes differential. This research used a Completely Randomized Design (CRD) by 5 treatments with 5 repetitions conducted for 14 days. The treatment groups were: K1 negative control, K2 positive control (alloxan induced only), P1 induced by alloxan and given 100% ethanol extract of jeruju leaves at dose of 22.4 mg/bb/day, P2 induced by alloxan and given 50% ethanol extract of jeruju leaves dose of 22.4 mg/bb/day, and P3 induced by alloxan and given taurine dose of 15.6 mg/bb/day. Data were analyzed by ANOVA and followed by LSD test at the 5% level. The results showed that the administration of jeruju and taurin can maintain the number of leukocytes and the number of lymphocyte cells that were close to normal after induced by alloxan. But has no effect in the number of erythrocytes in mice
Utilization of Tofu Liquid Waste as Organic Fertilizer on the Growth and Production of Paddy Rice Plants (Oryza sativa L) Wili Heriko; Tri Nopsagiarti; Angga Pramana
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.19.2.57-64

Abstract

This research has been carried out in Kedundung Island Village, Central Kuantan District, Kuantan Singingi Regency. This research takes place for approximately four months starting from November 2017 until March 2018. This study aims to determine the effect of Tofu Liquid Waste as Liquid Organic Fertilizer on Plants and Production of Paddy Rice (Oriza sativa L). The parameters observed in this study include: plant height, age of flowering, age of harvest, number of productive tillers, and dry grain weight. This study aims to determine the effect of Tofu Liquid Waste as Organic Fertilizer on the Growth and Production of Rice Field Crops. The design used in this study is a Non Factorial Randomized Block Design (RBD) consisting of one factor, namely factor A (Tofu Liquid Waste) consisting of 4 levels: A0 (control), A1 (600 mL/plot), A2 (1200 mL/plot), A3 (1800 mL/plot). The observational data from each treatment were statistically analyzed and continued with the Next Test of Honestly Significant Difference at the 5% level. The results showed that the Tofu Liquid Waste treatment had a significant influence on the parameters of observation of Plant Height, Flowering Age, Harvest Age, Number of Productive Tillers and Dry Grain Weight. The best treatments were A3 for observation of Plant Height (124.91 cm), Flowering Age (73.99 days), Harvest Age (95.74 days), Number of Productive Tillers (50.91 stems), and Dry Grain Weight (100.16 g)
Review of the Characterization of Lactic Acid Bacteria in Tuna Fish Malikha, Siti
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.19.1.18-22

Abstract

Bekasam is a type of fermented freshwater fish product with sour taste. Bekasam is made from fish that have been cleaned gills and entrails, washed, mixed with salt. After 2 days of fermentation, rice is added to this mixture and fermentation is continued for 5 to 7 days. Bekasam is thought to have antihypertensive activity due to the formation of bioactive peptides resulting from fish protein degradation during the fermentation process of the scars. This study aims to isolate indigenous lactic acid bacteria with high power. Lactic acid bacteria were isolated from tuna. Isolation was carried out using MRS agar + CaCO3 medium and screening of proteolytic lactic acid bacterial isolates was carried out using skim agar. Colonies that provide a clear zone on the skim to be identified as lactic acid bacteria. Of the 180 isolates of acid-producing bacteria that provide clear zones in the MRS to find 150 strains of lactic acid bacteria. The results of further morphological and biochemical tests indicate that these isolates are genera Lactobacillus, Pediococccus and Leuconostoc. The results of further selection were carried out on homofermentative lactic acid bacteria and had high proteolytic activity. The results of identification of isolate species using API CH50 showed that selected lactic acid bacteria were Lactobacillus plantarum, Lactobacillus pentosus, and Pediococcus pentosaceus
Heavy Metal Content in Sediment and Hora Shell (Cerithidea obtusa) in Panipahan Waters, Rokan Hilir, Riau Wariski, Indra; Siregar, Yusni Ikhwan; Amin, Bintal
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.19.2.29-36

Abstract

This research was carried out in March 2021 to analyze the heavy metal content of Pb and Cu in the sediment and flesh of the horn shell (Cerithidea obtusa). Sediment samples and horn shells were taken from the coastal waters of Panipahan, Panipahan Village, and Teluk Pulai Village, Rokan Hilir Regency, Riau Province. The method used in this research is a survey method. Sampling was determined by using purposive sampling at three different stations. The results of this study showed that the metal content of Pb and Cu was highest in sediments around residential areas (44.7150 g/g and 104.4200 g/g), while the horn shell was found in areas far from anthropogenic activities (2.4717 g/g and 8.6617 g/g). Differences in the metal content of Pb and Cu in the sediments were found between stations, while for horn shells there was no difference between stations. The metal content of Pb in the sediment did not show a significant effect (F < 0.05) Pb content in horn shells, as well as Cu. The results of the calculation of the PTWI (Provisional Tolerable Weekly Intake) value indicated that the horn shell in the waters is acceptable for consumption

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