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Yuliana Yuliana
UIN ALAUDDIN MAKASSAR
Chemistry Civil Engineering, Building, Construction & Architecture

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Isolasi Senyawa Bioaktif Antibakteri Pada Ekstrak Etanol Teripang Pasir (Holothuria scabra) di Kepulauan Selayar Yuliana Yuliana; Asriani Ilyas; Suriani Suriani
Al-Kimia Vol 5 No 1 (2017): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v5i1.2340

Abstract

Abstract: Sand sea cucumber (Holothuria scabra) is one type of marine invertebrates with family Holothuriidae and is a member of Enchinodermata animals. Types of animals have been used as raw  materials in traditional medicine. The aims of this reseach are to isolate the bioactive compounds contained in the ethanol extract of sand sea cucumbers and to know its major bioactivity. This research conducted in several methods namely extraction, fractionation, identification using thin layer chromatography (TLC) and qualitative test to determine secondary metabolites, as well as the characterization by FTIR. Results obtained from the isolation is a pure isolate by weight of 0.0203 grams of yellowish white paste. Purification was performed using three systems eluent as well as FTIR spectroscopy. The results showed that the compounds in pure isolates are alkaloids. Viscous extract and pure isolates subsequently tested its antibacterial test disc diffusion method using bacteria Salmonella thypi and Staphylococcus aureus. The results showed that the extract activity of the bacteria Salmonella thypi and Staphylococcus aureus into the strong category with optimum diameter of clear zone respectively 11.50 mm and 12.30 mm. Keyword: Bioaktive Compound, Disc Diffusion, Isolation, Sand Sea Cucumber (Holothuria scabra).
LECTURER INNOVATION ON LEARNING MANAGEMENT DURING PANDEMIC TIME AT POSTGRADUATE UIN ALAUDDIN MAKASSAR Yuliana Yuliana; Sulaiman Saat; Sitti Mania
JICSA : Journal of Islamic Civilization in Southeast Asian Vol 10 No 2 (2021)
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jicsa.v10i2.24592

Abstract

The results of the study stated that the innovation of Postgraduate lecturers at UIN Alauddin Makassar during the pandemic, namely the form of innovation was maximized but the effect or impact of the innovation was not maximized, because it was caused by several factors that were constrained by students, for example network disturbances, when students were making presentations. The innovation of Postgraduate lecturers at UIN Alauddin Makassar in managing learning during the pandemic is less effective because based on the observations of researchers, it shows that some students are constrained in the network when the learning process takes place, students do not follow the lesson well, indicated by the presence of students who do not activate the camera, lack of focus in receive the subject matter, so that it does not achieve the proper learning objectives.
Co-Authors Asriani Ilyas Sitti Mania Sulaiman Saat Suriani Suriani