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All Journal Makara Journal of Science Bulletin of Chemical Reaction Engineering & Catalysis
Tuti Wukirsari
Department of Chemistry, Bogor Agricultural University, Gedung Fapet W2 Lt 4-5, Jl. Agatis Kampus IPB Darmaga
Chemical Engineering, Chemistry & Bioengineering Chemistry

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ENKAPSULASI KETOPROFEN DENGAN KITOSAN-ALGINAT BERDASARKAN JENIS DAN RAGAM KONSENTRASI TWEEN 80 DAN SPAN 80 Sugita, Purwantiningsih; Napthaleni, Napthaleni; Kurniati, Mersi; Wukirsari, Tuti
Makara Journal of Science Vol. 14, No. 2
Publisher : UI Scholars Hub

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Encapsulated Ketoprofen by Chitosan-Alginat based on Type and Variation of Tween 80 and Span 80 Concentration. Ketoprofen has been encapsulated by chitosan-alginate based on types of surfactant and it’s concentration. The variations of concentration either Tween 80 (polietilena sorbitanmonooleat) or Span 80 (sorbitanmonooleat) that used were around (1- 3)% concentrations with stirring around (15-60) minutes. The using of Tween 80 resulted efficiency of encapsulated ketoprofen and nano particle size (100-1000) nm are higher than Span 80.
Utilization of Silica Gel for the Synthesis of Geranyl Laurate and Citronellyl Laurate Rosalina, Khoerunissa Novianti; Wukirsari, Tuti; Handayani, Sri; Hudiyono, Sumi
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 2 Year 2024 (August 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20159

Abstract

Geraniol and citronellol are monoterpenoid alcohols with diverse pharmacological activities. This research focuses on synthesized of geranyl laurate and citronellyl laurate using silica gel as an esterification catalyst. The FTIR peak spectra of silica gel showed that Si-OH, Si-O-Si group were observed. XRD showed that the silica gel is an amorphous phase. The reaction was conducted under reflux using a Dean–Stark trap. The reaction was monitored by TLC and then the product was purified using column chromatography. This work reported that silica gel can be utilized as a catalyst for preparing geranyl laurate and citronellyl laurate which proven by the spectra of FTIR, 1H-NMR, and 13C-NMR of the geranyl laurate and citronellyl laurate formed. The IR spectra of geranyl laurate and citronellyl laurate showed the presence of a carbonyl group (C=O) at 1744-1745 cm-1 and C-O from ester at 1170-1176 cm-1. The peak number and its chemical shift on 1H-NMR and 13C-NMR spectra further verified the structure of geranyl laurate and citronelyl laurate. In conclusion, silica gel can be utilized as a catalyst for preparing geranyl laurat and citronellyl laurate. Therefore a silica gel-based catalyst is promising to be developed for esterification applications.
Co-Authors Handayani, Sri Hudiyono, Sumi Mersi Kurniati Napthaleni, Napthaleni Purwantiningsih Sugita Rosalina, Khoerunissa Novianti