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All Journal Jurnal Forum Analisis Statistik Pharmaceutical Reports
Marda, Marda
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Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Health Professions Immunology & microbiology Medicine & Pharmacology

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Antioxidant Activity of Dechlorophyllation of Kejibeling Leaf (Strobilanthes crispu L.) Extract Using the Free Radical Reduction Method Marda, Marda; Naid, Tadjuddin; Rahmawati, Rahmawati
Pharmaceutical Reports Vol 3, No 1 (2024): (March) Pharmaceutical Reports
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/pharmrep.v3i1.285

Abstract

Kejibeling leaves (Strobilanthes crispus L.) from the Acanthaceae family is a medicinal plant that has medicinal properties. This research aims to determine and determine the antioxidant activity of the dechlorophyllation ethanol extract of kejibeling leaves (Strobilanthes crispus L.) based on the IC50 value with the DPPH method. Kejibeling leaf extract (Strobilanthes crispus L.) extracted by soxhletation method, wherein the extraction process uses two types of solvents of different polarity, to attract chlorophyll compounds and antioxidant compounds, the percent yield of chlorophyll extract is obtained 0.0352% and percent yield of dechlorophyllation ethanol extract 9.604%. Then tested the antioxidant activity using the DPPH method. The results showed that there was antioxidant activity with an IC50 value of 106.375 µg/mL, that is, the result shows moderate antioxidant activity, while quercetin as a comparison has very strong antioxidant activity with a value of 1.391 µg/mL.
Utilization of the ARIMA Model for Predicting the Value of Coconut Export in Kalimantan Barat Marda, Marda; Imro'ah, Nurfitri; Novita, Irene
Jurnal Forum Analisis Statistik Vol. 4 No. 2 (2024): Jurnal Forum Analisis Statistik (FORMASI)
Publisher : Badan Pusat Statistik Provinsi Kalimantan Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57059/formasi.v4i2.87

Abstract

The manufactured coconut classified under HS code 08011100 is available in either shredded or dried form. In 2022, this variety of coconut is projected to account for 8.68% of the export value of manufactured coconuts in Indonesia. While West Kalimantan has not yet achieved the status of the largest coconut exporter in Indonesia, coconut remains the primary commodity in the plantation sub-sector and significantly contributes to the Regional Original Income (PAD) of West Kalimantan Province. West Kalimantan, with a potential coconut plantation area of 94,204 ha and a growing array of processed coconut products, stands poised to enhance the value of its coconut exports. This study seeks to examine prospective market conditions by predicting the export value of coconuts in shredded or dried form, serving as a foundational strategy for enhancing the value of coconut exports. The ARIMA (Autoregressive Integrated Moving Average) model is employed to forecast the value of coconut exports (HS 08011100) for the upcoming 4 periods. During the process of identifying the best model, the ARIMA model (2,1,1) was selected, yielding a MAPE value of 26.63%. This indicates that the forecasts for coconut export values (HS 08011100) remain acceptable. The estimated coconut export value serves as a valuable planning reference for stakeholders aiming to enhance future coconut exports.
Co-Authors Imro'ah, Nurfitri Novita, Irene Rahmawati, Rahmawati Tadjuddin Naid