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All Journal Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa Jurnal Pendidikan Kimia, Fisika dan Biologi
Yuszda K. Salimi
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Earth & Planetary Sciences Education Mathematics

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Analisis Kadar N-total Tanah pada Pertumbuhan Tanaman Jagung yang Diberikan Pupuk NPK-Biochar-Kitosan Roslina Imran; Astin Lukum; Wiwin Rewini Kunusa; Yuszda K. Salimi; Erni Mohamad; Arviani Arviani
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.384

Abstract

Corn (Zea mays) is a widely cultivated crop in Gorontalo and has high economic value as well as an important role in food security. Fertilization is one of the key factors that influence the productivity of corn plants. This research aims to determine the combination of NPK fertilizer doses granulated with Biochar-Chitosan in enhancing the growth and productivity of corn plants, as well as its impact on the quality of total N soil content. The study was conducted by planting corn, applying fertilizer, and observing its growth through measurements of plant height, leaf length, stem diameter, cob weight with husk, and cob weight without husk. The observational data were then analyzed descriptively, summarizing or classifying the data set to provide an overview of the data. Additionally, the analysis of soil N-total content was conducted before and after the application of fertilizers. The research results show that the combination of NPK-Biochar fertilizer doses has a significant impact on the growth and productivity of corn plants. The 7.5-gram NPK-Biochar fertilizer dose yielded the best results in increasing plant height, number of leaves, stem diameter, and cob weight with and without husks compared to other doses. Soil chemical property analysis also indicates that the application of NPK-Biochar fertilizer has a positive impact on the quality of the soil's total nitrogen content.
Identifikasi Senyawa Metabolit Sekunder Ekstrak Metanol Daun Pletekan (Reullia tuberosa L.) Nur Rafida Akub; Nurhayati Bialangi; Weny J.A Musa; Yuszda K. Salimi; Wiwin Rewini Kunusa; Ahmad Kadir Kilo
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.392

Abstract

Indonesia is renowned for its abundant and diserve natural resources, including various plants. Many medicinal plants are traditionally utilized due to their therapeutic benefits. The utilization of minnieroot leaves as a traditional medicine shuld be supported by comprehensive studies to identify the active compounds, thereby omproving their quality, safety and afficacy. Secondary metabolites in minnieroot, particularly in the leaves, contain polyphenolic compounds, while the roots are known to contain flavonoids. This study aims to identify secondary metabolite compounds in minnieroot (Reullia tuberosa L.) leafs methanol extract. The study utilized methanol as a solvent for the extract solution became colorless, resulting in a extract yield of 8,02% of the leaf’s weight. The qualitative test confirmed the presence of secondary matebolites, specifically flavonoids and tannin in the methanol extract of minnieroot leaves. The final result from column chromatography separation shows that crystals are formed in the sixth vial. The crystals areb brownish blackn in color and weigh 0, 1235 g.
Inhibis Enzim α-Glukosidase dan α-Amilase dari Ekstrak Metanol Daun Buhu (Garuga floribunda Decne) Sebagai Antidiabetes Nurvita Abdullah; Netty Ino Ischak; La Alio; Yuszda K. Salimi; La Ode Aman; Ahmad Kadir Kilo
Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa Vol. 3 No. 1 (2025): Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/algoritma.v3i1.360

Abstract

The Garuga floribunda (Garuga floribunda Decne) plant is one of the species known for its various medicinal properties. This research aims to investigate the inhibitory activity of α- glucosidase and α-amylase enzymes and to determine the optimum concentration of the methanol extract of Garuga floribunda leaves as an antidiabetic agent. The leaves extraction is obtained through an extraction process using methanol as the solvent and tested for itsinhibitory activity against the α-glucosidase enzyme using the p-nitrophenyl-α-D- glucopyranoside (p-NPG) substrate and the α-amylase enzyme using the DNS (3,5- dinitrosalicylic acid) substrate. The method is UV-Vis spectrophotometry. The Phytochemical tests of this plant reveal the presence of flavonoids, alkaloids, saponins, tannins, steroids, and terpenoids. The inhibition test results show that the methanol extract of Garuga floribundaleaves exhibited significant inhibitory activity against both enzymes. The highest inhibition percentage against the α-glucosidase enzyme is 91.09%, indicating very high antidiabetic activity. Meanwhile, the inhibition against the α-amylase enzyme is 7.56%, showing no significant antidiabetic activity. The optimum concentration for inhibiting both enzymes is 1000 ppm.
Uji Organoleptik & Karakteristik Fisikokimia Serta Aktivitas Antioksidan Produk Susu Berbasis Kacang Sacha Inchi (Plukenetia volubilis L.) Nurfadilah M. Kasim; Netty Ino Ischak; Yuszda K. Salimi; Nurhayati Bialangi; La Ode Aman; Erni Mohamad
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.412

Abstract

This research aims to formulate and examine the physicochemical characteristics and antioxidant activity of sacha inchi (Plukenetia volubilis L.) as a plant-based milk. Moreover, this research also aims to conduct organoleptic tests on the products. The sacha inchi milk is formulated with five ratios: SI1 (sacha inchi 1:10 parts water), SI2 (sacha inchi 2:10 parts water), SI3 (sacha inchi 3:10 parts water), SI4 (sacha inchi 4:10 parts water), and SI5 (sacha inchi 5:10 parts water). Organoleptic tests are carried out by assessing the aspects of taste, color and aroma of the product with a score range of 1 (least preferred) - 5 (most preferred). The results of the organoleptic test showed that the most preferred sacha inchi peanut milk formulation was SI5 with a preference level reaching a score of 4.48. The SI5 formulation is more dominantly preferred because it is richer in taste, color and aroma. Then continued with physicochemical testing which includes water content, ash content, fat content, protein content, carbohydrate content, calcium content, pH, and viscosity and IC50 antioxidant activity test using UV-Vis Spectrophotometer instrument. The results of physicochemical tests and IC50 antioxidant activity conducted in this study were respectively: water content (74.10%), ash content (0.65%), fat content (19.15%), protein content (4.29%), carbohydrate content (1.82%), calcium content (0.043%), pH (6.01), viscosity (209 mPa∙S), and IC50 antioxidant activity (429.10 ppm).
Identifikasi Senyawa Metabolit Sekunder Ekstrak Etanol Cangkang Sacha Inchi (Plukenetia volubilis L.) Astria Endesei; Yuszda K. Salimi; Netty Ino Ischak; Ahmad Kadir Kilo; Hendri Iyabu; La Ode Aman
Jurnal Pendidikan Kimia, Fisika dan Biologi Vol. 1 No. 3 (2025): Mei : Jurnal Pendidikan Kimia, Fisika dan Biologi
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupenkifb.v1i3.281

Abstract

This study aimed to identify the secondary metabolite compounds present in the ethanol extract of Plukenetia volubilis L. (sacha inchi) shells through phytochemical screening and LC-MS analysis. The extraction was performed using the maceration method with 95% ethanol as solvent, resulting in a yield of 47.33%. Qualitative phytochemical tests revealed the presence of alkaloids, flavonoids, tannins, terpenoids, saponins, and glycosides in the extract. Further LC-MS analysis tentatively identified several phenolic and flavonoid compounds with known biological activities, including sinapinic acid, 1-o-sinapoylglucose, and azelaic acid from the dicarboxylic acid group. The presence of these compounds highlights the potential of sacha inchi shell extract as a natural antioxidant and antidiabetic agent. These findings support the valorization of sacha inchi agricultural waste as a promising raw material for pharmaceutical and nutraceutical applications.
Co-Authors Ahmad Kadir Kilo Arviani Arviani Astin Lukum Astria Endesei Erni Mohamad Hendri Iyabu La Alio La Ode Aman Netty Ino Ischak Nur Rafida Akub Nurfadilah M. Kasim Nurhayati Bialangi Nurvita Abdullah Roslina Imran Weny J.A Musa Wiwin Rewini Kunusa