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All Journal Equilibrium Journal of Chemical Engineering Berita Biologi
Fahmi Achmad Saputra
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

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Carboxymethylation of Cassava Peel: Effect Sodium Monochloroacetate and Temperature Sperisa Distantina; Inayati Inayati; Fahmi Achmad Saputra; Muhammad Fitra Arifianto
Equilibrium Journal of Chemical Engineering Vol 2, No 1 (2018): Volume 2 No 1 January 2018
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v2i1.40425

Abstract

Cassava peel contains cellulose that can be chemically modified to be more useful product. In this work, carboxymethylcellulose (CMC) from cassava peel powder was prepared by alkalization using sodium hydroxyde and then followed by carboxymethylation using sodium monochloroacetate. The aims of this work were to investigate the effect of sodium monochloroacetate-powder ratio (0.59, 1.47, 2.95, 4.42) and carboxymethylation temperature (45OC and 70OC) on the degree of substitution (DS) and reaction efficiency (RE).  The  result  of  FTIR  spectra indicated that  carboxylmethyl groups successfully attached on the cellulose backbone to  form CMC structure. The higher of sodium monochloroacetate-powder ratio and higher carboxymethylation temperature enhanced its DS but reduced the RE.
GELLAN GUM, A SPHINGOMONAS MICROBIAL POLYSACCHARIDES: BIBLIOMETRIC ANALYSIS OF TRENDS AND APPLICATIONS Fahmi Achmad Saputra; Indria Puti Mustika; Tiolita, Fitriana; Rudiyono
Berita Biologi Vol 23 No 2 (2024): Berita Biologi
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/beritabiologi.2024.5619

Abstract

Bacterial polysaccharides have gained considerable interest in recent years because of their wide range of applications. Gellan gum (GG) is a biodegradable microbial exopolysaccharide that has a wide range of commercial applications due to its versatility. Although GG is being used more frequently, research on it continues to evolve. This study used bibliometric analysis to examine patterns in GG application research over the last four decades. The data were obtained from the Scopus database, and the study of performance was carried out using R-Studio Biblioshiny. The important factors that were evaluated included the type of documents, the annual trends in publication, the subject areas covered, the titles of the journals, the analysis of citations, the distribution of countries, and the analysis of keywords. A total of 714 documents associated to GG were found, with articles being the most common document type. There has been a significant increase in research on GG applications since 2009. China became the primary provider, but the United States showed substantial participation in international collaborations. VOSviewer was used to show the co-authorship between countries and the co-occurrence of keywords in the field of GG research, emphasizing the predominant concentration on biomedical topics. The findings suggest that emergent research trends are primed for additional industrial growth.
Co-Authors Inayati Inayati Indria Puti Mustika Muhammad Fitra Arifianto Rudiyono Sperisa Distantina Tiolita, Fitriana