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All Journal EKSAKTA: Journal of Sciences and Data Analysis Molekul: Jurnal Ilmiah Kimia Jurnal Serambi Abdimas
Eva Vaulina Yulistia Delsy
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Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology

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Isolation And Identification Of Antioxidant Compounds Leaf Betel Seating (Piper sarmentosum Roxb. Ex Hunter) Hartiwi Diastutia; Eva Vaulina Yulistia Delsy
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 11, ISSUE 2, August 2010
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

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Abstract

Sirih duduk or Piper sarmentosum Roxb. ex Hunter have been long used the people in Indonesia for traditional medicine to cure various diseases. This research was aimed to isolate and identify antioxidant compounds from P. sarmentosum leaves. The isolation bioactive compounds of P. sarmentosum leaves was performed by extraction the powder of P. sarmentosum leaves using methanol. The methanol extract was fractionated using n-hexane and ethylacetate in their various composition.  The fractions respectively was examined their antioxidant activity. The most active extract was fractionated again performed by coloumn chromatography Identification of the bioactive compounds was carried out using ultraviolet-visible (UV-Vis) spectrometry, infra red (IR) spectrometry and gas chromatography-mass spectrometry (GCMS). The result showed that the methanol extract of  P. sarmentosum leaves have antioxidant activity. The fractionation was performed by coloumn chromatography using n-hexane-ethylacetate (4:6) eluent, a bioactive compound of sinamic acid derivative was 4-ethoxy-2-hidroxy-3,5-dimethoxy sinamic acid could be purely isolated. Keywords: Piper sarmentosum, antioxidant, sinamic acid derivative.
Quantitative Structure-Property Relationship Analysis Against Critical Micelle Concentration of Sulfonate-Based Surfactant Based on Semiempirical Zindo/1 Calculation Ponco Iswanto; Eva Vaulina Yulistia Delsy; Ely Setiawan; Fiandy Aminullah Putra
Molekul Vol 14, No 2 (2019)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (129.009 KB) | DOI: 10.20884/1.jm.2019.14.2.467

Abstract

Development of anionic surfactant compound isvery important because the anionic surfactant class iswidely used in people's lives. For instance,anionic surfactantsare used as food additives and detergents. The novelcompound of sulfonate-basedsurfactantor proposed compound has predictedthe CriticalMicelle Concentration(CMC) value of experiment. Quantitative Structure-Property Relationship (QSPR)analysisbased on semiempiricalZINDO/1 calculationwas conducted to obtain QSPR equation. Theoretical predictorsor independent variable which have an influence on the value of CMC are used to construct QSPR equation. The theoretical predictors areclassified intopredictor of electronic properties, solubility and steric. A total of 108experimentalCMCbelongs to sulfonate-basedsurfactant are calculated their theoretical predictors and analyzed by multiple linear regression. The QSPR equationwhich is obtainedfromthis study contains theimportant theoretical predictors.They are solubility properties, molecular weight, molecular size and net charge of carbon atomin thepolar partof sulfonate-based surfactant. This QSPR equation couldbe used to predict the CMC value of the novelsulfonate-based surfactant.
Pelatihan Pembuatan Tas Ecoprint Sebagai Produk Ecoprint Siap Pakai Ari Asnani; Hartiwi Diastuti; Eva Vaulina Yulistia Delsy; Waluyo Handoko
Serambi Abdimas Vol 3 No 2 (2022): Jurnal Serambi Abdimas
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.sa.2022.3.2.7338

Abstract

Ecoprint adalah teknik mencetak dan mewarnai berbagai material serat alam menggunakan pewarna alami. Aplikasi teknik ecoprint pada kain serat alam selanjutnya dapat dibuat beragam tas sebagai pengembangan produk ecoprint siap pakai. Berdasarkan hal tersebut maka telah dilakukan kegiatan pengabdian kepada masyarakat berupa pelatihan pembuatan tas fashion berbasis kain ecoprint dengan mitra Edukasi Bruwun Alas, Patikraja, Banyumas. Tahapan kegiatan mencakup pembuatan kain ecoprint, pembuatan pola tas, dan pembuatan tas menggunakan kain ecoprint. Hasil kegiatan menunjukkan dampak positif dimana mitra mampu menghasilkan ecoprint pada media kain, pola tas, dan produk tas ecoprint. Lima ragam tas yang dihasilkan adalah tas pouch, tas selempang, tas tote bag, tas ransel, dan tas kotak. Hasil kegiatan ini diharapkan mampu berkontribusi positif terhadap pengembangan keragaman produk ecoprint siap pakai.
Co-Authors Ari Asnani Ely Setiawan Fiandy Aminullah Putra Hartiwi Diastuti Hartiwi Diastutia Ponco Iswanto Waluyo Handoko