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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Riset Kimia Fullerene Journal of Chemistry Hydrogen: Jurnal Kependidikan Kimia Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) Journal of The Indonesian Society of Integrated Chemistry Jurnal Sains dan Kesehatan
Syafrizayanti, Syafrizayanti
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Immunology & microbiology Medicine & Pharmacology

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Pengaruh Pemberian Variasi pH terhadap Produksi Trigliserida Total dan Komposisi Asam Lemak dari Chlorella Vulgaris Air Tawar Wulandari, Rahmadani; Dharma, Abdi; Syafrizayanti, Syafrizayanti
Jurnal Riset Kimia Vol 10, No 2 (2019): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v10i2.316

Abstract

Chlorella vulgaris is a microalgae that has high lipid content and potential as raw material for biofuel production. This study aims are to determine the effect of pH on growth, lipid production and fatty acid composition of C. vulgaris by using Growmore 32-10-10 fertilizer as a culture medium. Microalgae were cultured in medium Growmore 32-10-10 for 10 days. Afterward, pH of medium was varied into pH 5, 7, 8.2 and 9 and continued cultivate for 3 days. C. vulgaris cultured at pH 8.2 which is a control pH reached optimum growths. The GC-MS analysis for lipid productivity of C. vulgaris was 0.5020 g/L/day and 0.2902 g/L/day for microalgae grew at pH 8.2 and 9, respectively. Cultures at pH 8.2 and 9 produce methyl hexadecanoate, methyl 9-octadecanoate, methyl octadecanoate, methyl 9,12-octadecadienoate, methyl 9,11-octadecadienoate. Additional fatty acid methyl nonadecanoate was also found in C. vulgaris grew at pH 9. The low and high pH stress of C. vulgaris culture medium did not affect culture growth but altered lipid production and fatty acid composition.
Pemurnian Fikosianin dari Spirulina platensis dengan Metode Liquid Biphasic Flotation (LBF) dan Penentuan Aktivitas Antioksidannya Elise, Cori Yolanda; Syafrizayanti, Syafrizayanti; Salim, Marniati
Jurnal Riset Kimia Vol 12, No 2 (2021): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v12i2.412

Abstract

Phycocyanin from Spirulina platensis (S. Platensis) is a pigment-complex protein belong to the light-harvesting phycobiliprotein family. The pigments have high economic value as a natural blue dye as well as the source of antioxidants and anticancer. Production of pure natural phycocyanin remains in high demand. Therefore, this study aimed to obtain phycocyanin with high purity values using modified liquid biphasic flotation (LBF) system and tested for DPPH (1,1-diphenyl-2-pycrilhydrazil) radical scavenging activity. This study produced high purity phycocyanin with purification fold 3.041 ± 0.04 and recovery yields approximately about 70.881%. Purified phycocyanin showed scavenging activity with IC50 of   338.585 mg/mL. Thus, the LBF system yielded high purity phycocyanin pigments.
Challenges in Molecular and Morphological Identification of Sponge Species in Raja Ampat Aisyah, Siti Zanuba; Zamani, Neviaty Putri; Cahyani, Ni Kadek Dita; Elfahmi, Elfahmi; Syafrizayanti, Syafrizayanti; Andriani, Yosie; Arafat, Dondy; Bashari, Muhammad Hasan; Hanif, Novriyandi; Sani, Lalu M. Iqbal; Ayu, Inna Puspa; Akbar, Nebuchadnezzar; Subhan, Beginer
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.1.115-125

Abstract

Sponges (Phylum Porifera) are a group of highly diverse, sessile, and filter-feeding basal metazoans, except spongillids. The majority of sponges are marine species that play an important role in benthic habitat by maintaining the stability of marine ecosystems through nutrient cycling, habitat provision, and bioerosion. However, marine sponges are not easily identifiable because of their lack of species-level distinctive morphological features, which limits efforts to monitor actual species biodiversity. Indonesia is home to approximately 850 identified species of marine sponges, and Raja Ampat archipelago of West Papua province is known for its exceptional marine biodiversity. Despite the species abundance, the exact number of sponges in the region is not well-documented due to the lack of specific studies providing comprehensive data on their diversity. Therefore, this study aimed to conduct a DNA barcoding analysis using the mitochondrial cytochrome oxidase I (COI) gene as a marker, combined with morphological analyses of 22 individuals collected in the waters of Waigeo, Mansuar, and Gam Islands in Raja Ampat. The results showed that 3 samples were identified at the species level (Halichondria sp. and Stylissa carteri) with good query cover and percent identity. This showed the possible presence of undescribed or cryptic species, suggesting a severe lack of reference data for both morphology and molecular analyses of marine sponges in the region. Consequently, the analysis showed the presence of a significant gap in the understanding of sponge biodiversity in Raja Ampat's waters.
Antioxidant of Ethanol Extract and Toxicity of Fractions from Aspergillus unguis a Marine Sponge Symbiont of Aaptos suberitoides Masyerli, Scify Bilqis Nawafi; Efdi, Mai; Bashari, Muhammad Hasan; Untung Kurnia Agung, Mochamad; Subhan, Beginer; Efahmi, Efahmi; Andriani, Yosie; Syafrizayanti, Syafrizayanti
Hydrogen: Jurnal Kependidikan Kimia Vol 13, No 1 (2025): February 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i1.14645

Abstract

The marine sponge Aaptos suberitoides has been shown to have anticancer properties, with clear evidence of its capacity to suppress the growth of cancer cells. However, the pharmaceutical exploration of chemicals from marine organisms causes significant environmental concerns. Aspergillus unguis, a fungal symbiont of the marine sponge A. suberitoides, has been isolated for its potential in sustainable natural products resources. This study assesses the antioxidant activity of ethanol extract and the toxicity of four levels fractions from ethanol extracts of A. unguis mycelium and these results were reported for the first time in this study. The antioxidant of ethanol extract was determined using the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) method. The fractions were examined for toxicity using the Brine Shrimp Lethality Test (BSLT). The ethanol extract of A. unguis shows very strong antioxidant bioactivity (IC50 = 42.84 mg/L). The LC50 values for hexane, chloroform, ethyl acetate, and butanol fractions were determined to be 74.11 µg/mL, 93.84 µg/mL, 59.37 µg/mL, and 142.79 µg/mL, respectively. It indicates significant toxicity. These preliminary results are important knowledge for further research into the bioactivity potential of the metabolites as candidate anticancer compounds, aligning with marine pharmaceutical drug development.
Ability Antioxidant and Anti-inflammatory Phycocyanin from Extract Spirulina platensis Rahma, Diny Hazita; Armaini, Armaini; Syafrizayanti, Syafrizayanti
Jurnal Kimia Fullerene Vol 10 No 1 (2025): Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v10i1.715

Abstract

Increased exposure to free radicals and chronic inflammatory processes are major factors in the development of various degenerative diseases, including cancer, diabetes, and cardiovascular disease. Therefore, the search for natural bioactive compounds with antioxidant and anti-inflammatory properties has become a major focus in pharmaceutical and biomedical research. Phycocyanin is a complex protein pigment from the microalgae Spirulina platensis which is known to have biological activities, especially as an antioxidant and anti-inflammatory. This study aims to evaluate the antioxidant and anti-inflammatory properties of phycocyanin extract obtained through maceration and freeze-thawing methods using PBS solution pH 7.4 and distilled water. Antioxidant activity was evaluated using the ABTS (2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonate)) method, while the anti-inflammatory potential was tested using the protein denaturation inhibition method. The test results showed that the phycocyanin extract had quite strong antioxidant activity with an IC₅₀ value of 82.86 mg/L. In addition, anti-inflammatory activity was also shown with an IC₅₀ value of 73.92 mg/L in the protein denaturation inhibition test. These results indicate that phycocyanin extract from Spirulina platensis has the potential as a natural bioactive agent in the development of nutraceutical, cosmetic, and pharmaceutical products. Further studies are needed to understand the molecular mechanisms and in vivo testing to support its clinical application.
Harnessing Indigenous Fermentation: Probiotic Lactic Acid Bacteria from West Sumatera’s Dadih Hillman, Prima Fitria; Titisari, Geliz Luh; Syafrizayanti, Syafrizayanti
Jurnal Riset Kimia Vol. 16 No. 2 (2025): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v16i2.853

Abstract

The potential of lactic acid bacteria (LAB) isolated from dadih, a traditional fermented buffalo milk from West Sumatra, was explored as functional starter cultures for yogurt production. The use of local LAB is considered essential due to Indonesia’s dependence on imported cultures, which often exhibit inconsistent performance and suboptimal quality. This study selected bacterial isolates based on their ability to grow in highly acidic media and their tolerance to bile salt treatment. Molecular identification was conducted by amplifying the 16S rRNA gene using the PCR method. Specific LAB isolates with high probiotic potential were further characterized based on their tolerance to acid and bile salts. The results showed that several LAB strains from dadih, such as Lactococcus lactis, Weissella paramesenteroides, and Weissella sp., exhibited good probiotic properties. These isolates could effectively ferment milk and produce yogurt with organoleptic qualities comparable to commercial cultures. In addition, Serratia marcescens, known as an opportunistic pathogen, was also detected during the isolation process; some of its strains are known to participate in fermentation processes. These findings support the utilization of local LAB as an alternative to imported cultures, promoting local food production, improving the nutritional value of fermented dairy products, and preserving traditional culinary heritage.
Studi Molecular Docking dan Farmakoinformatika Senyawa Kurkumin dan Arturmeron pada Tumbuhan Kunyit (Curcuma Longa Linn.) Sebagai Antihipertensi: Molecular Docking and Pharmacoinformatics Study of Curcumin and Arturmeron Compounds in Turmeric Plants (Curcuma Longa Linn.) as Antihypertensive Agustian, Dede Rahman; Syafrizayanti, Syafrizayanti; Alfath, Yuma Nur; Riga, Riga; Kusnanda, Arif Juliari
Jurnal Sains dan Kesehatan Vol. 6 No. 5 (2024): J. Sains Kes.
Publisher : Fakultas Farmasi, Universitas Mulawarman, Samarinda, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25026/jsk.v6i5.2287

Abstract

Content Angiotensin Converting Enzyme (ACE) is an enzyme that is able to convert the peptide angiotensin 1 into angiotensin 2 which plays a role in the process that causes hypertension. Curcumin and artumeron are a group of chemical compounds that are widely contained in the turmeric plant (Curcuma Longa Linn.) which are reported to have the potential to inhibit ACE in vitro. The aim of this research is to predict the binding interactions of the curcumin and artumeron compound groups with the amino acids in ACE and using the native ligand captopril as the standard ligand. The method used was pharmacokinetic screening of active compounds in the curcumin and artumeron groups using ADMET predictions, Lipinski Rule of five and molecular docking simulations with the MOE program. Based on the results of screening and molecular docking simulations, it shows that the curcumin compound can bind to the ACE enzyme with a binding affinity of -6.032 kcal.mol-1 with a binding site with the amino acid Leu 342 better than captopril which has a binding affinity value of 4.427 kcal.mol-1 with binding sites with the amino acids Glu 342, Pro 344 and Thr 345. These results showed the curcumin compound potential used as a candidate for natural ingredients in antihypertensive treatment because according to in silico predictions it has abilities that are not much different from captopril. Keywords:          ACE, antihypertensive, in silico, Curcuma Longa Linn.   Abstrak Angiotensin Converting Enzyme (ACE) merupakan enzim yang mampu merubah peptida angiotensin 1 menjadi angiotensin 2 yang berperan dalam proses penyebab hipertensi. Senyawa kurkumin dan artumeron merupakan golnngan senyawa kimia yang banyak terkandung dalam tumbuhan Kunyit (Curcuma Longa Linn.) dilaporkan mempunyai potensi dalam menghambat ACE secara in vitro. Tujuan penelitian ini adalah untuk prediksi interaksi penambatan golongan senyawa kurkumin dan artumeron  dengan asam-asam amino pada ACE dan menggunakan ligan native kaptopril sebagai ligan standarnya. Metode yang digunakan berupa skrining senyawa aktif golongan kurkumin dan artumeron secara farmakokinetika dengan prediksi ADMET, Lipinski Rule of Five dan simulasi penambatan molekul dengan program MOE. Berdasarkan hasil skrining dan simulasi penambatan molekul menunjukkan bahwa senyawa curcumin dapat berikatan dengan enzim ACE dengan afinitas pengikatan sebesar -6,032 kcal.mol-1 dengan situs pengikatan dengan asam amino Leu 342 lebih baik dibandingkan dengan captopril yang mempunyai nilai afinitas pengikatan sebesar 4,427 kcal.mol-1 dengan situs pengikatan dengan asam amino Glu 342, Pro 344 dan Thr 345. Hasil ini menunjukkan senyawa curcumin  dapat dijadikan sebagai kandidat bahan alami dalam pengobatan antihipertensi karena secara prediksi in silico memiliki kemampuan yang tidak berbeda jauh dengan kaptopril. Kata Kunci:         ACE, antihipertensi, in silico, Curcuma Longa Linn.
Potential Toxicity of Legundi Leaf Extract (Vitex Trifolia L) Using the Brine Shrimp Lethality Test (BSLT) Method Arifah, Zil; Efdi, Mai; Syafrizayanti, Syafrizayanti
Journal of The Indonesian Society of Integrated Chemistry Vol. 16 No. 1 (2024): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v16i1.33115

Abstract

Many natural products can be used as starting points in developing modern medicines because of their capabilities in pharmacological activities. Vitex trifolia L is an herbal plant that has been used to treat diseases such as fever, inflammation, colds, irregular menstruation, and diseases related to the female reproductive organs. This study aims to identify the cytotoxic ability of Vitex trifolia L leaf extract using the Brine Shrimp Lethality Test (BSLT) method. Extraction was carried out by maceration and fractionation methods, followed by phytochemical assay and cytotoxic assay using BSLT method. The results showed that the n-hexane extract had a moderate cytotoxic effect (LC50 241 µg/ml), the methanol extract included in the low toxic category (LC50 995 µg/ml) and the other two extracts involved in the non-toxic category (ethyl acetate and butanol).
Antioxidant of Ethanol Extract and Toxicity of Fractions from Aspergillus unguis a Marine Sponge Symbiont of Aaptos suberitoides Masyerli, Scify Bilqis Nawafi; Efdi, Mai; Bashari, Muhammad Hasan; Untung Kurnia Agung, Mochamad; Subhan, Beginer; Efahmi, Efahmi; Andriani, Yosie; Syafrizayanti, Syafrizayanti
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 1 (2025): February 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i1.14645

Abstract

The marine sponge Aaptos suberitoides has been shown to have anticancer properties, with clear evidence of its capacity to suppress the growth of cancer cells. However, the pharmaceutical exploration of chemicals from marine organisms causes significant environmental concerns. Aspergillus unguis, a fungal symbiont of the marine sponge A. suberitoides, has been isolated for its potential in sustainable natural products resources. This study assesses the antioxidant activity of ethanol extract and the toxicity of four levels fractions from ethanol extracts of A. unguis mycelium and these results were reported for the first time in this study. The antioxidant of ethanol extract was determined using the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) method. The fractions were examined for toxicity using the Brine Shrimp Lethality Test (BSLT). The ethanol extract of A. unguis shows very strong antioxidant bioactivity (IC50 = 42.84 mg/L). The LC50 values for hexane, chloroform, ethyl acetate, and butanol fractions were determined to be 74.11 µg/mL, 93.84 µg/mL, 59.37 µg/mL, and 142.79 µg/mL, respectively. It indicates significant toxicity. These preliminary results are important knowledge for further research into the bioactivity potential of the metabolites as candidate anticancer compounds, aligning with marine pharmaceutical drug development.
Enzymatic Biodegradation of Polyethylene Terephthalate (PET) by Crude Lipase from Geotrichum candidum Haviza, Nurul; Armaini; Syafrizayanti, Syafrizayanti
Indonesian Journal of Chemical Studies Vol. 4 No. 2 (2025): Indones. J. Chem. Stud. December 2025
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ijcs.v4i2.90

Abstract

The issue of plastic waste, particularly polyethylene terephthalate (PET), has become a major global environmental concern due to its resistance to natural degradation. One promising approach to addressing PET waste is the use of lipase enzymes produced by microorganisms. This study aims to explore the potential of the fungus Geotrichum candidum J1 to produce crude lipase enzymes capable of degrading PET plastic. The research involved stages including isolation and rejuvenation of the fungus, enzyme production through solid-state fermentation, and lipase activity assay using the cup-plate method. Subsequently, PET degradation testing was carried out using the crude enzyme extract under controlled conditions for 30 days. The results indicated that the crude lipase from G. candidum J1 exhibited lipolytic activity, as evidenced by clear zones formed on selective media. The average total protein yield reached 2.992 ± 0.05 mg/mL, indicating stable fermentation. Degradation tests showed a weight loss of PET between 5.9% and 6.4%. Characterization by Fourier Transform Infra Red (FTIR) confirmed the cleavage of ester bonds in PET structure, evidenced by spectral changes in carbonyl groups. Observations using a Scanning Electron Microscope (SEM) revealed morphological changes, including cracks and pores, on the PET surface post-treatment. In conclusion, the crude lipase from G. candidum J1 demonstrates significant potential as a biodegradation agent for reducing PET plastic pollution in an environmentally friendly manner.
Co-Authors Abdi Dharma Agustian, Dede Rahman Aisyah, Siti Zanuba Alfath, Yuma Nur Arifah, Zil Armaini Armaini, Armaini Ayu, Inna Puspa Bashari, Muhammad Hasan Beginer Subhan Dondy Arafat Efahmi, Efahmi Elfahmi Elfahmi, Elfahmi Elise, Cori Yolanda Haviza, Nurul Hillman, Prima Fitria Jurnal Riset Kimia, Editor in Chief Kusnanda, Arif Juliari Mai Efdi Marniati Salim Masyerli, Scify Bilqis Nawafi Nebuchadnezzar Akbar NEVIATY PUTRI ZAMANI Ni Kadek Dita Cahyani, Ni Kadek Dita Novriyandi Hanif Rahma, Diny Hazita Riga, Riga Sani, Lalu M. Iqbal Titisari, Geliz Luh Untung Kurnia Agung, Mochamad Wulandari, Rahmadani Yosie Andriani