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Sains Natural: Journal of Biology and Chemistry
Published by Universitas Nusa Bangsa
ISSN : 20863446     EISSN : 2621508X     DOI : https://doi.org/10.31938/jsn
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry
Jurnal Sains Natural is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication with the objectives to explore the knowledge about natural sciences. This journal incorporates not only all branches of chemistry and biology, but also sub-disciplines like Biochemistry, Polymer, Agricultural chemistry, Environmental chemistry, etc.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 6 Documents
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Search results for , issue "Vol. 13 No. 2 (2023): Sains Natural" : 6 Documents clear
Phytochemical Content of Fresh Purple Sweet Potato (Ipomea batatas L.) Extract As Acid-Base Titration Indicator Anjelina Derci Jenimat; Yustina D Lawung; Anselmus Boy Baunsele; Erly Grizca Boelan; Theresia Wariani; Maria Aloisia Uron Leba
JURNAL SAINS NATURAL Vol. 13 No. 2 (2023): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v13i2.439

Abstract

Research has been carried out to examine the extraction and application of purple sweet potato tuber extract as an indicator of acid-base titration. Purple sweet potato tuber extract was obtained by extracting fresh tubers using ethanol 95% medical grade (PSPTE-95%) and ethanol 96% analytical grade (PSPTE-96%). Three variations of the maceration stage extracted samples. The extract was used for a phytochemical test and applied as an indicator for acid-base titration. Based on the research conducted, the rendement extract was extracted by ethanol 95% medical grade (PSPTE-95%) for the three stages of maceration are 4.34%, 4.76%, and 5.64%, the rendement extract was extracted by ethanol 96% analysis grade (PSPTE-96%) for the three stages of maceration are 7.09%, 12.16%, and 20.43%. PSPTE-95% and PSPTE-96% contain flavonoids, tannins, alkaloids, and saponins. PSPTE-95% and PSPTE-96% can be applied as indicators for titration of HCl solution with NaOH solution and HCl solution with NH4OH solution.
Nutrition Levels of Liquid Organic Fertilizer from Onion Skin (Allium cepa. L) with EM-4 Bioactivator Gustria Ernis; Donna Sagita Mala; Amelisa Okta; Doni Notriawan; Muhammad Adeng Fadila
JURNAL SAINS NATURAL Vol. 13 No. 2 (2023): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v13i2.468

Abstract

The high production of shallots (Allium cepa. L) causes a large amount of shallot waste in the form of shallot skins, which are organic wastes with a light weight, easily dispersed, disturbing the landscape and polluting the environment as well as being a source of disease. So that it is necessary to process waste into materials that have useful and even economic value, one of which is Liquid Organic Fertilizer (POC). The purpose of this study was to determine the levels of macro and micro nutrients in POC with varying concentrations of EM-4 bioactivator. In this study, the manufacture of POC with various concentrations of bioactivator 0, 25, 50, and 100 mL with a fermentation time of 14 days. Then carried out physicochemical observations, namely observing physical and chemical changes ranging from viscosity, color, odor and the presence or absence of gas in the POC made. The resulting POC was then tested for macro-nutrients (N, P, K and C-organic) and micro-nutrients (Fe, Mn, and Cu) using AAS and UV-Vis spectrophotometer. In this study, the best POC of onion peel waste was obtained at a concentration of 100 mL bioactivator with macronutrients N, P, K, C-Organic, each of which was 0.71; 1.45; 0.36 and 4.7%; while the content of micronutrients Fe, Mn, and Cu were 0.037, respectively; 0.0052, and 0.198%. It can be concluded that the levels of macro and micro nutrients have complied with SNI 19-7030-2004 except for C-organic elements which are still far below the standard, and POC made from onion skin has a high phosphorus content, so it is very suitable for use in plants that have high levels of phosphorus. require growth regulators (ZPT), especially for root growth.
Thomas Langur (Presbytis thomasi) Daily Movement in Jantho Natural Reserve, Aceh Province Ruskhanidar; Rosmalia; Sofyan Iskandar
JURNAL SAINS NATURAL Vol. 13 No. 2 (2023): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v13i2.469

Abstract

Thomas langur (Presbytis thomasi) is an endemic primate to Aceh and North Sumatra. These primates have a local name, “Kedih.” Forest fires and forest functions conversion into oil palm plantations are pressure on their habitat and have decreased wild populations in nature. As arboreal animals, their movements depend heavily on the connectivity of vegetation. Comprehensive research is needed to obtain horizontal and vertical daily movement data of the thomas langur. This study used GPS to take coordinates, a camera to document Thomas langur and its food trees, and Thomas langur as a research object. The data recorded includes the coordinates of each forage tree, the type of forage tree, and the height of the canopy strata used by Thomas langur for foraging. The hardwood movement data was plotted on ArGis 10.1 to get the horizontal hardness movement area. Tree height data was obtained by measuring the tree height where Thomas langur stopped to look for food. Kedih movements to look for food are carried out daily from morning to evening. The results showed that the short length of movement was highly depend on the availability of forage trees. The denser the forage trees, the shorter the daily activities of Thomas langur. This daily movement can be done horizontally and vertically. Horizontally, Thomas langur moved to follow the forage trees, and vertically, Thomas langur moved by utilizing the height of the forage trees. Horizontally, Thomas langur moved 144.92 m in the rehabilitation block and 62.30 m in the protection block. The Thomas langur home ranged in the rehabilitation block is 27 ha, and 25 ha in the protected block. Vertically, Kedih in the rehabilitation blocks and protected blocks moved to trees with a height of 11-20 m, as much as 49%.
Morphological Identification of Oudemansiella canarii (Jungh.) Höhn. at IPB University Campus Forest Litta Zulvawati Ardi; Nuzrina Ardhani; Risya Ayudya Fadillah; Chelsea Dame Natalia; Indah Tasya Nabila; Made Jefry Dwi Dharma; Ivan Permana Putra
JURNAL SAINS NATURAL Vol. 13 No. 2 (2023): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v13i2.470

Abstract

Oudemansiella canarii is a wild mushroom which easy to find in nature and usually grows on wood. This mushroom is recognized as the edible macrofungi, but information on the morphological characteristics of this fungus is very limited in Indonesia. Therefore, this study aimed to identify and describe O. canarii based on morphological features as an effort to disseminate mycology information to the public. This research was conducted in the IPB University campus forest which is one of the natural habitats of this macrofungi. The fruiting bodies were observed in the field and in the laboratory. Identification was carried out based on the macroscopic and microscopic characteristics of the collected specimens. Oudemansiella canarii observed had a cream-colored cap, scales on its surface, a cap covered with mucus, free lamellae attachments, club-shaped basidia, basidiospores globose to subglobose, hyaline with thin walls, without ornamentation, and has a clearly visible guttule. This report is the first comprehensive morphological description on O. canarii from Indonesia and adds information to the diversity of Indonesian macrofungi.
Mentilin (Tarsius bancanus) The Smallest Primate at The Taman Kehati Pelawan, Central Bangka Ratna Sari Hasibuan; Agus Seftian Pracahyo; Miftahul Ihsan
JURNAL SAINS NATURAL Vol. 13 No. 2 (2023): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v13i2.454

Abstract

One of the primitive primates and the smallest nocturnal is Mentilin or Tarsius. Mentilin (Tarsius bancanus) is an endemic animal scattered on the islands of Sulawesi, Kalimantan, Bangka and Belitung. Mentilins are protected animals and are listed in CITES Appendix II. The existence of forest degradation on Bangka Island due to illegal logging, conversion of land to plantation land, and illegal tin mining by the community and companies on a large scale has caused the mentilin’s habitat to decrease. This study's purpose was to determine the total population of mentilin and determine the habitat of mentilin in the Pelawan Forest. The method used is line transect and vegetation analysis. The results of this study were a total of 6 Mentilin found from two groups and a tree-level diversity of 1.67; Pole 2.48; 3.41 saplings and 3.40 seedlings. Mentilin density in Pelawan Forest is 21.4 mentilin per km2, with a sex ratio of 1:2 Dominated by Pelawan Plants.
Daily Behavior of Binturong (Arctictis binturong) in Ex-situ Conservation Taman Margasatwa Ragunan Widya Anggraini; Mia Azizah; I.G.A Manik Widhyastini
JURNAL SAINS NATURAL Vol. 13 No. 2 (2023): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v13i2.471

Abstract

Binturong (Arctictis binturong) is a mammal in the family of Viverridae, which includes animals such as civets. Binturong is a species with VU (Vulnerable) status, which means that it faces the risk of extinction in the wild in the future based on the International Union for Conservation of Nature and Natural Resources (IUCN) Red List and has Appendix III based on the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). This research aimed to determine the behavior at Taman Margasatwa Ragunan (Ragunan Wildlife Park) from July to September 2022. Taman Margasatwa Ragunan is an ex-situ conservation for flora and fauna, which is also helpful as a place for research, education, and recreation. This research determined the behavior, frequency, and duration of binturong’s daily activities at Taman Margasatwa Ragunan (Ragunan Wildlife Park). This study used a scan sampling method, and the objects were three individual binturongs, namely male Sumatran binturong (Martin), male Kalimantan binturong (Amoy), and female Kalimantan binturong (Gaza). The results obtained showed that the highest activity was found in resting behavior (6444 minutes; 82,64%) and the lowest was in agonistic behavior (3 minutes; 0,03%) carried out by Martin, then the highest activity was in resting behavior (6607 minutes; 84,75%) and the lowest was the behavior of defecation (5 minutes; 0,06%) carried out by Amoy, then the highest activity was in resting behavior (6833 minutes; 87,61%) and the lowest was the behavior of defecation (1 minute; 0,01%) carried out by Gaza.

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