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Lantanida Journal
Published by Universitas Islam Negeri Ar-Raniry Banda Aceh
ISSN : 23563133     EISSN : 25489062     DOI : -
Core Subject : Science, Education, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Education
Lantanida Journal is an, scientific journal open-access containing results research, literature reviews and recent news on science and technology in the areas of educational learning and learning development. This journal is formed from the initiative of Leaders Chemistry departmen, lecturers, staff, alumni and students of Chemistry Education Department UIN Ar-Raniry Banda Aceh.
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Articles 216 Documents
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FORMULASI SEDIAAN MASKER GEL DARI PATI JAGUNG MANIS (Zea mays saccharata) Apriani, Aida; Nurfadhilah, Ika; Sirait, Tri Susanti; Azhari, Saiful; Samaniyah, Siti
Lantanida Journal Vol 12 No 2 (2024)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v12i2.28462

Abstract

Corn is a popular ingredient in facial skin care products. Corn contains thiamine, which can dry wounds and eliminate acne scars that appear as holes on the face or black spots. Corn starch is made into a gel mask with the gelling ingredient hidroxy prophyl methyl cellulose (HPMC). This research intends to establish if a gel mask manufactured from sweet corn starch (Zea mays saccharata) can meet the requirements of the physical quality test assessment results, as well as the stability requirements. The research approach is experimental, employing a sample gathering methodology known as purposive sampling. The evaluation of gel mask preparations includes evaluating the physical quality of the preparations, irritant testing on 10 participants, and drying time tests on the preparations. The evaluation of the preparations revealed that all gel mask formulations were semi-solid gels with a yellowish white color and a distinct corny smell. The results were homogeneous, with an average pH of 7.5–7.7, spreadability of 5–7 cm, and viscosity of 22133-67566. The preparation also exhibited stable stability at room temperature and did not irritate volunteers' skin. Therefore, both the stability requirements and the physical quality test assessment results are satisfied by the preparation.
PENGEMBANGAN E-LKPD KALORIMETRI BERBASIS PROBLEM BASED LEARNING (PBL) MENGGUNAKAN LIVEWORKSHEETS Syarani, Meylina; Suharman, Andi; Sanjaya, Sanjaya
Lantanida Journal Vol 13 No 2 (2025): July-December 2025
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v13i2.31322

Abstract

The lack of interactive teaching materials and students' difficulties in understanding concepts and calculations in calorimetry prompted the development of e-LKPD based on Problem-Based Learning (PBL) using Liveworksheets for class XI.1 students at Srijaya Negara High School, Palembang. This study aims to produce a valid, practical, and effective e-LKPD. The development follows the ADDIE model and includes Tessmer's formative evaluation stages: self-evaluation, expert review, one-to-one, small group, and field test. Data was collected through interviews with chemistry teachers, a needs analysis questionnaire administered to 35 students, a walkthrough with two experts who assessed the content, design, and pedagogical aspects, a practicality questionnaire administered to three students in the one-to-one stage and nine students in the small group stage, as well as pre-tests and post-tests administered to all 35 students. The validity test results showed an average validity score of 0.99, which falls into the very high category. The practicality of the e-LKPD in the one-to-one stage was 89.33% and in the small group stage was 91.82%. The effectiveness test results showed an N-Gain value of 0.80, which falls into the high category. Therefore, this e-LKPD is deemed valid, practical, and effective in enhancing students' understanding and engagement in calorimetry learning.
PENGEMBANGAN MODUL SUSTAINABLE PROJECT-BASED LEARNING (S-PjBL) BERBANTUAN AUGMENTED REALITY SEBAGAI INOVASI PEMBELAJARAN GREEN CHEMISTRY BAGI CALON GURU KIMIA Prasetya, Cyndi; Maisarah; Qumarani, Yara; Fahira, Nazihan; Wahyuni, Naila
Lantanida Journal Vol 13 No 2 (2025): July-December 2025
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v13i2.31958

Abstract

While its application in higher education is frequently limited by the lack of contextual and interactive teaching materials and engaging visualization of abstract concepts, green chemistry education is crucial for developing environmental awareness and sustainable attitudes among pre-service chemistry teachers. The objective of this work was to create a green chemistry learning module using augmented reality (AR) and Sustainable Project-Based Learning (S-PjBL). Purposive sampling was used to choose 28 pre-service chemistry teachers for the study, which used the ADDIE development model. Expert validation and user response questionnaires were used to collect data, and percentage average scores were used for quantitative analysis. The module received a 92.22% validation score from material experts and a 90.56% (very feasible) validation score from educational technology experts, according to the results. Lecturers scored 94.44% on practicality assessments, while students scored 90.12% (very practical). Students' comprehension of green chemistry, sustainable project implementation, and connections to actual environmental challenges were all bolstered by the program. To sum up, the AR-assisted S-PjBL green chemistry program is very realistic and useful for educating aspiring chemistry teachers. According to the results, combining S-PjBL with AR improves student engagement, fortifies 21st-century abilities, increases knowledge of green chemistry, and promotes high-quality education.
CHEMICAL PROFILING AND ANTIBACTERIAL ACTIVITY OF Nannochloropsis oculata EXTRACTS AGAINST FOODBORNE PATHOGENS Hati, Futi Kusuma; Nurjayadi, Muktiningsih; Kartika, Irma Ratna; Azahra, Nur Fadillah Adelia; Albana, Fadhila Shofi; Aisyafitri, Afifah; Aurellia, Dema Griseldis
Lantanida Journal Vol 14 No 1 (2026): January-June 2026
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v14i1.32624

Abstract

Foodborne illnesses remain a public health concern in Indonesia, prompting the search for natural antibacterial agents. This study evaluated the antibacterial activity and chemical profile of Nannochloropsis oculata extracts against Listeria monocytogenes and Shigella flexneri. Microalgae were cultivated, and cell density was monitored using an Ultraviolet–Visible (UV–Vis) spectrophotometer. Biomass was harvested and extracted using chloroform–methanol, followed by compound identification through Gas Chromatography–Mass Spectrometry (GC–MS). Antibacterial activity was assessed using the disc diffusion method. A total of 1.3196 g of dry biomass was obtained. At 200 mg/mL, the extract produced inhibition zones of 8.40 ± 0.17 mm against L. monocytogenes and 8.83 ± 0.29 mm against S. flexneri. GC–MS analysis revealed fatty acid derivatives, predominantly methyl palmitoleate (26.47%). These findings provide preliminary insight into the antibacterial potential of N. oculata extracts; however, further quantitative and application-based studies are required to determine their practical relevance.
DEVELOPMENT AND PHYSICOCHEMICAL EVALUATION OF ANTIOXIDANT PEEL-OFF MASKS CONTAINING ETHANOL EXTRACT OF CURRY LEAVES Silitonga, Desni Rinanda; Sirait, Tri Susanti; Fachrunniza, Yunda; Karo-Karo, Sry Ulina; Limbong, Yulia Safitri
Lantanida Journal Vol 14 No 1 (2026): January-June 2026
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v14i1.34079

Abstract

Curry leaves (Bergera koenigii) are widely recognized for their rich phytochemical content and antioxidant properties; however, their application as active ingredients in cosmetic delivery systems remains relatively underexplored. This study aimed to evaluate the phytochemical profile and antioxidant activity of the ethanol extract of B. koenigii leaves and to investigate its potential incorporation into a peel-off mask formulation through physicochemical characterization. Antioxidant activity was assessed using the DPPH (2,2-diphenyl-1-picrylhydrazyl) assay, while formulation quality was evaluated through organoleptic properties, homogeneity, pH, viscosity, spreadability, drying time, stability testing for 28 days, cycling test, and skin irritation assessment. Phytochemical screening confirmed the presence of tannins, flavonoids, steroids, and saponins. The ethanol extract exhibited very strong antioxidant activity with an  value of 8.23 µg/mL, indicating a high free radical scavenging capacity. The formulated peel-off masks demonstrated stable physicochemical properties during storage, with viscosity values of 6,740–13,729 cPs, spreadability of 5.3–6.6 cm, drying time of 14.03–16.36 minutes, and pH values within the acceptable skin-compatible range (6.40–6.63). No irritation responses were observed in the preliminary skin test. These findings highlight the potential of B. koenigii ethanol extract as a promising natural antioxidant ingredient for peel-off mask cosmetic formulations.
EVALUASI AKTIVITAS TABIR SURYA EKSTRAK ETANOL DAUN GENJER (Limnocharis flava) SECARA SPEKTROFOTOMETRI Haryanti, Pipin Dwi; Kurniawati, Zenia Lutfi; Rahmadani, Agung
Lantanida Journal Vol 14 No 1 (2026): January-June 2026
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v14i1.34301

Abstract

The dangers of ultraviolet (UV) radiation exposure to skin health have triggered the need for safe natural sunscreen ingredients. This study aims to assess the efficacy of ethanol extract of genjer leaves (Limnocharis flava) as an active ingredient in sunscreen preparations, with an emphasis on the analysis of SPF values ​​and total flavonoid levels. The methodology used is an in vitro laboratory experiment. The extraction procedure was carried out through a maceration technique using 96% ethanol solvent (1:10 ratio). Flavonoid levels were measured using the AlCl3 colorimetric method with quercetin as the standard, while SPF calculations were carried out via a UV-Vis spectrophotometer in the range of 290–320 nm with varying levels of 200, 400, and 600 ppm. The research data revealed that the extract contained a total flavonoid content of 267.58 ± 1.21 mg QE/g with a yield of 18.2%. The study results confirmed a unidirectional correlation between the extract concentration level and skin protection power. The most optimal effectiveness was detected at a concentration of 600 ppm, which resulted in an SPF of 15.46 (ultra protection). Furthermore, the erythema transmission (%Te) value of 3.38% and pigmentation (%Tp) of 2.66% placed this extract in the sunscreen category. In conclusion, genjer leaves have very promising prospects as a natural sunscreen component due to their capability to absorb both UV-A and UV-B radiation simultaneously.
PROFIL FITOKIMIA MENGGUNAKAN GC-MS DAN POTENSI ANTIOKSIDAN SPESIFIK GEOGRAFIS: STUDI KOMPARATIF Vernonia cinerea L. ETNIS NIAS GUNUNG SITOLI Sari, Mayang; Ginting, Mandike; Damayanti, Rizki; Zega, Nufdar
Lantanida Journal Vol 14 No 1 (2026): January-June 2026
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v14i1.32336

Abstract

Vernonia cinerea L. (VCL) leaves have been known in several countries to have various medical activities as a fever reducer, diuretic, antispasmodic and anthelmintic, relieve asthma, cough, malaria, urinary tract stones and arthritis. In Indonesia, this type of plant can also be found as a wild plant. This study investigated the determination of active compounds from ethanol extract of leaves using GC-MS and determination of antioxidant activity of various extracts Antioxidant activity of the DPPH method. Analysis with FTIR obtained several peaks representing the identity of the compounds in the extract is at a wavelength of 3351.95 cm-1 determination of alcohol and amine groups (O-H., N-H), 2924,62 cm-1 is in the C-H bond., -CH3., C=C-H., Ar-H, 1616,25 cm-1 is in the carboxyl group (COOH), amine and amide groups at 1600-1650 cm-1. And at a wavelength of 1030-1068,45 cm-1 which is a primary alcohol group (CH2OH). Analysis with GC-MS obtained promising bioactive compounds in the health sector, there are 11 main components, namely: hexadecanoic acid methyl ester., n-hexadecanoic acid., 9,12,15-octadecatrienoic acid, methyl ester, (Z,Z,Z)., Neoptadine., hydroxymethylfurfurole., Dodecanamide., 9-Octadecenamide, dodecanamide, N,N-bis (2-hydroxyethyl)., vinyl phenol., vomifoliol., 13-OXABICYCLO [10.1.0] TRIDECANE. And the results of the antioxidant activity test showed that the VCL ethanol extract has strong antioxidant activity with an IC50 value of 64,907±0,02 (mg/L) which has the potential as a natural antioxidant.
EKSPLORASI, ISOLASI, DAN MORFOLOGI MIKROBA DARI GUA LEUNTIE, LHOONG, SERTA UJI PRELIMINARY POTENSIAL MICP (MICROBIALLY INDUCED CALCIUM CARBONATE PRECIPITATION) Fazli, Rahmad Rizki; Taufiq, Luthfi Chaliqi; Zahra, Mimi; Jwita, Nova Elsa; Erlidawati, Erlidawati; Saaid, Mardiana
Lantanida Journal Vol 14 No 1 (2026): January-June 2026
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v14i1.34801

Abstract

 Aceh province has interesting natural landscapes. Forests, seas, mountains and caves are very complete in decorating the natural landscape of Aceh. One of the famous caves is Leuntie Cave which is located in Lhoong, Aceh Besar. The structure of Leuntie Cave is very unique because it consists of cave walls made of rock and the floor layered with sea sand. The mouth of Leuntie Cave is located not far from the sea, only about 200 m from the shoreline which affects the humidity of the cave. High humidity level allows Leuntie Cave to be a potential and unique microbial habitat for isolation. This study used an experimental research method with the initial stage of exploration of Leuntiee Cave for sampling of soil and cave wall rocks, followed by isolation and screening of bacterial growth and obtained five bacterial isolates with codes BGL-1 to BGL-5. Microbial morphological identification was carried out by observing bacterial colonies and gram staining tests. Preliminary urea agar base test to see the potential in precipitating calcium carbonate (CaCO3) by producing the urease enzyme. The results of this study obtained two Leuntiee Cave bacterial isolates BGL-1 and BGL-3 which were positive for producing the urease enzyme and could be selected as MICP bio-agent candidates.
INTEGRATING POMEGRANATE PEEL WASTE-BASED LIP BALM PROJECTS INTO COLLOID CHEMISTRY LEARNING: A PROJECT-BASED APPROACH TO STUDENTS’ ENVIRONMENTAL LITERACY Rahmawati Sunarya, Risa; Sukmawardani, Yulia; Muazaroh, Kaffatiya Najmii; Sumawardani, Yulia; Sari; Dahriah, Iis; Ali Nurdin, Muhammad
Lantanida Journal Vol 14 No 2 (2026): July-December 2026
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v14i2.35052

Abstract

Senior high school students often face difficulties in translating environmental knowledge into concrete environmental behaviors, and organic waste like pomegranate peels remains underutilized in chemistry learning. This study aims to analyze students' environmental literacy through project-based worksheets (PjBL) using pomegranate peel waste for lip balm production in colloid chemistry. A pre-experimental one-shot case study involved 18 eleventh-grade students in Bandung, Indonesia. Selected through a purposive sampling technique. Data were collected using project-based worksheets, assessment rubics for student work and environmental literacy instruments. Results showed worksheet scores at 89.5 (very good). Environmental literacy scores were: environmental knowledge 81.2 (very good), cognitive skills 89.3 (very good), environmental attitude 82.0 (very good), and environmental behavior 79.3 (good). The findings indicate that PjBL-based activities supported students' engagement with contextual colloid chemistry concepts. However, the lower environmental behavior score (79.3) compared to other domains indicates a gap requiring further intervention. Overall, PjBL shows promise for developing environmental literacy by integrating chemistry learning with waste utilization.  
PENGEMBANGAN E-LAPD INKUIRI BERBASIS STEM UNTUK MENINGKATKAN KETERAMPILAN BERPIKIR KRITIS PADA MATERI LAJU REAKSI Mulyasari, Yanti; Hidayah, Rusly
Lantanida Journal Vol 14 No 2 (2026): July-December 2026
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v14i2.35111

Abstract

Critical thinking is an essential component of higher-order thinking skills that plays a crucial role in addressing the challenges of the twenty-first century. This study aimed to develop a STEM-based inquiry Electronic Student Activity Worksheet (E-LAPD) on the topic of reaction rates to enhance students' critical thinking skills. The study employed a Research and Development (R&D) approach using the 4D development model, which was limited to the Develop stage. A limited trial was conducted with 36 eleventh-grade students at SMA Negeri 1 Menganti using a One-Group Pretest–Posttest design. The results showed that the E-LAPD achieved a mode score of 4 for both content and construct validity. Its practicality was demonstrated by the students' activity implementation rate of 98.5% and a student response rate of 98.6%. Its effectiveness was indicated by an N-gain score of 0.80, which falls into the high category, suggesting an improvement in students' critical thinking skills. Therefore, the STEM-based inquiry E-LAPD met the criteria of validity, practicality, and effectiveness and is suitable for use in reaction rate instruction to enhance students' critical thinking skills.

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