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Journal : Lantanida Journal

KARAKTERISTIK DAN KUALITAS MUTU KARAGINAN RUMPUT LAUT DI INDONESIA Surya Adi Saputra; Muammar Yulian; Khairun Nisah
Lantanida Journal Vol 9, No 1 (2021)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v9i1.9189

Abstract

Carrageenan is a product produced from the extraction process of red seaweed (Rhodophyceae). Carrageenan can be used in various business fields, both in the food and non-food sectors, which function as a gelling additive, binder, emulsifier and stabilizer. The research method used is Literature Review with data collection and screening that has inclusion and exclusion criteria. The results obtained indicate that the quality characteristics and quality for water content and average gel strength have not met the established standards, while the yield value, ash content and average viscosity have met the quality standards set by FAO, FCC and EEC. . The factors that greatly affect the characteristics and quality of carrageenan from seaweed are alkaline concentration, seaweed harvesting age, temperature and extraction time as well as the type and environmental conditions where the seaweed grows.
UJI AKTIVITAS ANTIOKSIDAN DAUN BENALU KOPI (Loranthus Ferrugineus Roxb.) DENGAN METODE DPPH (1,1 – Difenil -2- Pikrilhidrazil) Muammar Yulian; Safrijal Safrijal
Lantanida Journal Vol 6, No 2 (2018)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (512.281 KB) | DOI: 10.22373/lj.v6i2.4127

Abstract

The study about antioxidant activity test of coffee parasite leaves (Loranthus ferrugineus Roxb.) by 1,1-diphenyl-2-pikrilhidrazyl (DPPH) method has been done. The aim of this study was to determine the content and activity of secondary metabolites, flavonoids and antioxidant, which found in the coffee parasite leaves. Dry powder of parasite coffee leaves (Loranthus ferrugineus Roxb.) as much as 0.5 kg were macerated by 2 L of ethanol solvent at room temperature for 4 x 24 hours, then mixed and filtered. Ethanol filtrate was evaporated at 30-40°C by using a rotary evaporator to obtain the crude extract of coffee parasite leaves. The results of the phytochemical screening showed positively that the extract was containing alkaloid, flavonoids, saponins, tannins and steroid compounds.The results of the antioxidant activity test by using DPPH method was obtained that the amount of antioxidant activity of the samples of ethanol extract had a very strong antioxidant activity against radical DPPH 0.05 mM, with IC50 values was obtained 6.063 ppm. Whereas, for comparison of ascorbic acid was about 3.127 ppm.
POTENSI BIODIVERSITAS INDONESIA SEBAGAI INHIBITOR XANTINA OKSIDASE DAN ANTIGOUT Muammar Yulian
Lantanida Journal Vol 2, No 1 (2014)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.359 KB) | DOI: 10.22373/lj.v2i1.666

Abstract

Tendency for people to go back to nature and the government's policy to "Saintifikasi Jamu" prioritizing in degenerative diseases such as hyperglycemia, hypertension, hypercholesterolemia and hyperuricemia / gout is a condition that is highly prospective and has pushed for the development of research on medicinal plants-based biodiversity Indonesiasebagai state megabiodiversity. Results of research have shown that among the diversity of Indonesia's biodiversity as a potential inhibitor of xanthine oxidase (XO) and antigot is sidaguri (Sida rhombifolia L), celery (Apium graveolens L), fruits (Salacca R. edulis) varieties of Bangkok, ear- earrings (Acalypha indicaL.), and Bitter (Andrographis paniculata, Ness.). Ethanol extract of the herb sidaguri XO inhibitor has potential as indicated by the ability to dampen the activity of XO with IC50 values
PENGGUNAAN MODEL PEMBELAJARAN SCIENCE, TECHNOLOGY, ENGINEERING, AND MATHEMATIC (STEM) PADA KONSEP ASAM BASA DI SMAN 1 BAITUSSALAM Haris Munandar; Lia Maghfira Izzani; Muammar Yulian
Lantanida Journal Vol 7, No 2 (2019)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (306.599 KB) | DOI: 10.22373/lj.v7i2.5421

Abstract

Based on observations at SMAN 1 Baitussalam, information was obtained that learning outcomes of students on acid-base material were still low, this was caused by the process of learning chemistry that was still teacher-centered and didn’t use specific learning models. The STEM learning model is a One learning model that can be used as  solution to this problem is the learning model of Science, Technology, Engineering, and Mathematics (STEM). The purpose of this study was to obtain information about the effect of the STEM learning model on learning outcomes and student responses, especially on the concept of acid-base in SMAN 1 Baitussalam. This study uses Quasi Experimental design, with data collected through test and questionnaires. Student test results were analyzed using SPSS Version 23.0, where the significance value obtained from the t-test analysis was 0,000<0.05 so it can be seen that Ho was rejected and Ha was accepted. Student responses obtained through questionnaires analyzed based on the percentage answers provided by students, the results showed that 93% responses of students were very interested in the STEM learning model. These results indicate that STEM learning model is effective in improving student learning outcomes in SMAN 1 Baitussalam, especially in acid-base concept.
PENGEMBANGAN MEDIA GEOMETRI MOLEKUL MENGGUNAKAN MACROMEDIA FLASH SEBAGAI SOLUSI MEDIA PEMBELAJARAN DARING DI MASA PANDEMI COVID-19 Haris Munandar; Muammar Yulian; Fifi Nopyana Shaliha
Lantanida Journal Vol 9, No 2 (2021)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v9i2.12683

Abstract

ABSTRAK Media pembelajaran merupakan alat, metode, dan teknik yang dapat digunakan dalam rangka mengefektifkan komunikasi dan interaksi antara guru dan peserta didik dalam proses pendidikan dan pembelajaran di sekolah. Berdasarkan hasil observasi di salah satu sekolah yang melaksanakan pembelajaran secara daring pada masa pandemi Covid-19 diperoleh informasi bahwa penggunaan media pembelajaran secara daring sangat dibutuhkan dalam mendukung proses belajar mengajar secara daring, salah satunya adalah pada mata pelajaran kimia. Tujuan dalam penelitian ini adalah untuk mengetahui bagaimana pengembangan media geometri molekul menggunakan macromedia flash sebagai solusi media pembelajaran kimia secara daring di masa pandemi Covid-19. Rancangan penelitian yang digunakan adalah penelitian dan pengembangan atau Research and Development (R&D). Instrumen yang digunakan pada penelitian ini adalah lembar validasi dan lembar angket. Pengumpulan data dilakukan dengan menggunakan lembar validasi dan penyebaran angket respon. Berdasarkan hasil analisis kebutuhan diperoleh informasi bahwa media pembelajaran daring pada materi geometri molekul sangat dibutuhkan untuk mendukung proses pembelajaran secara daring. Hasil validasasi berupa skor persentase validasi yang diperoleh dari validator ahli media yaitu 71,66%, sedangkan hasil persentase validator materi dan bahasa diperoleh 80%. Kedua hasil tersebut menunjukkan kriteria media tersebut layak digunakan dengan revisi minor. Hasil respon guru yang melibatkan 5 orang guru diperoleh skor persentase angket sebesar 85% dengan kriteria baik. Sedangkan hasil respon peserta didik diperoleh skor persentase angket sebesar 90% dengan kriteria sangat baik.ABSTRACT Learning media are tools, methods, and techniques that can be used in order to streamline communication and interaction between teachers and students in the education and learning process in schools. Based on the results of observations in one of the schools that carried out online learning during the Covid-19 pandemic, information was obtained that the use of online learning media was needed to support the online teaching and learning process, one of which was in chemistry subjects. The purpose of this study was to find out how to develop molecular geometry media using macromedia flash as a solution for online chemistry learning media during the Covid-19 pandemic. The research design used is Research and Development (R&D). The instruments used in this study were validation sheets and questionnaire sheets. Data was collected by using validation sheets and distributing response questionnaires. Based on the results of the need’s analysis, information is obtained that online learning media on molecular geometry material is needed to support the online learning process. The validation results are in the form of a validation percentage score obtained from media expert validators, namely 71.66%, while the percentage results of material and language validators are 80%. The two results indicate that the media criteria are suitable for use with minor revisions. The results of the teacher's response involving 5 teachers obtained a questionnaire percentage score of 85% with good criteria. While the results of student responses obtained a questionnaire percentage score of 90% with very good criteria.
ANALISIS E-LEARNING READINESS PADA PEMBELAJARAN KIMIA DI SMA NEGERI KOTA BANDA ACEH Muammar Yulian; Chusnur Rahmi; Ade Rida Wahyuni
Lantanida Journal Vol 10, No 1 (2022)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v10i1.14098

Abstract

The Covid-19 pandemic has changed our activities, including activities in the learning process. Previously, the learning process was carried out directly in the classroom, but the pandemic has changed into online learning such as e-learning. The implementation of e-learning in schools should be followed by an analysis of the level of e-learning readiness (ELR). This study aims to determine the readiness level of State Senior High Schools (SMA Negeri) Banda Aceh, namely SMA Negeri 1, SMA Negeri 3 and SMA Negeri 4. The method used in this study was descriptive qualitative with the number of research subjects as many as 94 students and 2 teachers in each school. The instrument used in this study was a questionnaire compiled and validated based on the Aydin & Tasci ELR model. The results showed that the three schools obtained ELR scores respectively, SMA Negeri 1 () = 3.53, SMA Negeri 3 () = 3.54. The score showed that these schools are ready but need a few improvements in applying e-learning at school. Aspects that must be improved are humans, technology, innovation, and development.