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All Journal Indonesian Journal of Pure and Applied Chemistry
Muhammad Agus Wibowo
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Tanjungpura
Biochemistry, Genetics & Molecular Biology Chemistry

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KARAKTERISASI MINYAK ATSIRI DAUN UJUNG ATAP (Baeckea Frutesces L) DARI HUTAN DESA SUNGAI NANJUNG KABUPATEN KETAPANG KALBAR M Supandi; Muhammad Agus Wibowo; Titin Anita Zahara
Indonesian Journal of Pure and Applied Chemistry Vol 2, No 2 (2019)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2821.916 KB) | DOI: 10.26418/indonesian.v2i2.36911

Abstract

Ujung atap (Baeckea frutescens L) from Myrtaceae family is a woody shrub which leaves resemble a large evergreen tree found from Nanjung River Village, Ketapang Regency, West Kalimantan.  The purpose of this study is to isolate and characterize essential oils of ujung atap. Insulation is used by the distillation method. The result showed rendement of ujung atap the essential oils are 0,91% (4 hours), 0,97% (6 hours) dan 1,12% (7 hours). Essential oils are tested physicochemistry properties and components of chemistry compound analyzed with GC-MS. The result showed density is 0,878 (room temperature), refractive index is 1,474 (28oC), optical rotation is +2,24(20oC), solubility in alcohol is 1:8 mL, acid number 1,253, dan ester number 3,829. The result of GC-MS showed 21 compound, with the main compound monoterpenes are α-pinene, β-pinene and 1,8 cineol.
ENKAPSULASI FRAKSI N-HEKSAN DAUN KESUM (Polygonum Minus Huds) TERSALUT Carboxymethylcellulose (CMC) DAN PATI DAN UJI AKTIVITAS ANTIOKSIDAN DENGAN TEKNIK FREEZE DRYING Fitriani Fitriani; Muhammad Agus Wibowo; Andi Hairil Alimuddin
Indonesian Journal of Pure and Applied Chemistry Vol 2, No 1 (2019)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2575.834 KB) | DOI: 10.26418/indonesian.v2i1.36945

Abstract

Kesum have a scientific name Polygonum Minus Huds is one of the endemic plants originating from West Borneo.  Extracts of kesum leaf is easily damaged and the compounds contained therei are volatile. Therefore it is necessary to take measures to protect the extracts of kesum leaf. One effort that can be made to im exprove the stability of the compounds in the extract is by the process of encapsulation. This process needs to be done so that the leaf extract can last longer so it can be used for various purposes. Encapsulation aims to protect sensitive material components and reduce the degradation of the active compounds in the material. This study aims to determine the effect of mass of core materials on the efficiency of encapsulation and antioxidant activity and the effect of temperature on encapsulation. The results showed that the encapsulated with the mass of core material 10% gave the highest efficiency of 89.7%. The mass of the core material affects the encapsulation efficiency, the less the core material will provide a high value of encapsulation efficiency. Enkapsulates containing n-heksan fractions of 444.53 ppm have a lower value IC50, thus having better antioxidant activity properties. The stability of the encapsulated antioxidant activity performed at room temperature 25◦C at 10% n-hexane fraction yielded 88.36% ihibisi on day 1, 80.90% on day 3, 79.67% on day 6 and 78.04% on day 9. Activity the antioxidant encapsulant on the first day at room temperature 25◦C is better than the third, sixth and ninth days. SEM leaf extract analysis results have uneven spherical particles, no visible fracture or pore holes as large as encapsulation have round particles that are almost as large.
Co-Authors Andi Hairil Alimuddin Fitriani Fitriani M Supandi Titin Anita Zahara