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All Journal Jurnal Riset Industri Hasil Hutan
Ihsan, Hamlan
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Review xanthan gum: produksi dari substrat biomassa, variabel efektif, karakteristik dan regulasi serta aplikasi dan potensi pasar Prabawa, I Dewa Gede Putra; Salim, Rais; Khairiah, Nadra; Ihsan, Hamlan; Lestari, Ratri Yuli
Jurnal Riset Industri Hasil Hutan Vol 11, No 2 (2019)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24111/jrihh.v11i2.5649

Abstract

Xanthan gum is an extracellular polysaccharide produced by a pure culture of Xanthomonas campestris through the fermentation process of carbohydrate sources in controlled conditions. These conditions must be carefully evaluated to obtain an optimal combination between yield and quality of the gum, and also production costs. The issue of this review is to provide a consolidated source of information on studies about xanthan gum production, alternative carbon sources from biomass substrates, effective variables on optimization production, characteristics, applications, and regulations status of xanthan gum. Lastly, the market potential is also discussed in this review.
Sifat fisik dan mekanik balok lamina dari batang kelapa sawit berdasarkan jumlah lapisan [ The physical and mechanical properties of laminated lumber from oil palm trunk based on the number of layers] Harsono, Dwi; Ihsan, Hamlan; Miyono, Miyono; Setiawati, Evy
Jurnal Riset Industri Hasil Hutan Vol 13, No 1 (2021)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24111/jrihh.v13i1.6157

Abstract

The total area of oil palm plantations in 2019 is 14.2 million hectares. Every 25 years, there is always oil palm plantations replanting that produced oil palm trunks. The potential of oil palm trunks used as raw material for laminated lumber is about 52.5% of the total of oil palm biomass. Oil palm trunks have a very low density, so that it needs special processing before it could be applied as building material or other uses. The purpose of this study is to analyze the physical and mechanical properties of laminated lumber from oil palm trunks at the end position based on the number of layers. The method used in this research was the utilization of oil palm trunks lamination using PVAc (polyvinyl acetate) adhesive with variations of 1, 2, 3, and 4 layers. The results showed that oil palm trunks could be used as raw material for laminated lumber. The characteristics of laminated lumber made from 1, 2, 3, and 4 layers range between: moisture content (12.16–13.6) %, density (1.281–0.331) g/cm3, MoR (65.46–116.54) kg/cm2, and compressive strength parallel to its fibers (43.31–114,66) kg/cm2. The physical properties of the oil palm trunks laminated lumber with the increasing number of layers tends to increase the density and reduce the moisture content, rather than oil palm trunks laminated lumber with a smaller number of layers. The increasing number of oil palm trunks layers lamination increase the value of laminated lumber mechanical properties.
Co-Authors Evy Setiawati, Evy Harsono, Dwi Miyono Miyono, Miyono Nadra Khairiah Prabawa, I Dewa Gede Putra Ratri Yuli Lestari, Ratri Yuli Salim, Rais