Karya Ilmiah
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The technique for separation and purification of gondorukem (gum rosin) from pine gum (pinus merkusii) with a simple distillation method

M Natsir1, M Nurdin1,A Ansharullah2, M Z Muzakkar1, E Trimutia1, I Irwan1, L O A Salim1, S Salmah1 and M Maulidiyah1,*
This study reports the processing and separation of gum rosin from pine gum (Pinusmerkusii). The research method was carried out with several stages, namely the process of tapping pine gum, the process of separation and purification. After the refining process, the gum rosin and turpentine oil are separated using a simple distillation technique. The results of gum rosin separation obtained from the distillation process were 86.67 with a soft point of 78.8°C, a vaporizing component of 0.976%, an acid number of 175.3125 and a saponification number of 178.81875. In addition to knowing the components of the gum rosin samples obtained, the identification of compounds was carried out using Fourier Transform Infrared Spectrophotometer (FTIR) and Gas Chromatography-Mass Spectrometry (GC-MS). The results of FTIR identification showed the presence of sp2C-H, -OH, sp3C-H, C=O, -CH2 and - CH3 groups, while GC-MS identification showed the presence components of Caryophyllene, Pimaric acid, Dehydroabietic acid, Abieticacid, and á-Pinene. The identification results indicate that the residue from the simple distillation is gum rosin.

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Diterbitkan pada: WEAST 2020 Journal of Physics: Conference Series

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