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All Journal Journal of Research and Technology
Farikha Alfi Syahriyah
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Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Industrial & Manufacturing Engineering

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ISOLASI FITOSTEROL DARI BAWANG MERAH (Allium cepa L.) Ahmad Musonnifin Aziz; Farikha Alfi Syahriyah; Ahmad Ihya’ Ulumuddin; Qurrota A’yuni
Journal of Research and Technology Vol. 5 No. 1 (2019): JRT Volume 5 No 1 Jun 2019
Publisher : 2477 - 6165

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Abstract

Shallot is one of the kitchen spices that is often used by the community. Shallot contains several useful compounds and one of them is phytosterol. Along with the development of science and technology, phytosterol can be used to reduce blood cholesterol levels and prevent heart disease, so it is very beneficial for human health. In this study, phytosterol compounds were identified and isolated. The dried onion was then pureed and sifted to 100 mesh. The sieved powder was then extracted by reflux extraction method within 6 hours. The results of the extract were then isolated by column chromatography and identified by Thin Layer Chromatography (TLC). The TLC test used -sitosterol as a standard and anisaldehyde reagent as a stain appearance. The TLC plate which had stained appearance was then analyzed using the TLC Scanner method. The results of the TLC test showed that the extract of positive red onion was purple and contained fitosterol. The results of the TLC Scanner also show that the peak and spectrum of the samples were the same as the standard -sitosterol and positively contained fitosterol.
Nanosilica Extraction from Grumusol Soil Medya Ayunda Fitri; Farikha Alfi Syahriyah; Zahrotul Azizah
Journal of Research and Technology Vol. 9 No. 1 (2023): JRT Volume 9 No 1 Juni 2023
Publisher : 2477 - 6165

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Grumusol soil is a type of soil that contains significant amounts of silica. Silica content in grumusol soil can reach up to 90%. The aim of this research was to determine the characteristics of silica nanostructures in Grumusol soil. The stages of the research were carried out including the preparation of raw materials, silica extraction, and XRD analysis. The raw material preparation stage is carried out by cleaning the grumusol soil from dirt. The second stage was carried out by synthesizing silica with the base extraction method and followed by acid deposition. The final stage is X-Ray Diffracion (XRD) analysis. The results of the research that has been carried out is the FWHM value of 0.0900 (<0.1) which indicates that the crystals produced have very good crystals with a very regular structure. The crystal size which includes nanosilica is 39.5076-48.6633 nm for 3M NaOH with 1 and 3 hours extraction time and 5M NaOH with 1 hour extraction time
Co-Authors Ahmad Ihya’ Ulumuddin Aziz, Ahmad Musonnifin Medya Ayunda Fitri Qurrota A’yuni Zahrotul Azizah