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Peta Asam Lemak Berbagai Spesies Lamun (Seagrass) di Pantai Kabupaten Donggala ., Tahril; Noor, Alfian; Taba, Paulina; La Nafie, Nursiah
C H E M I C A Vol 10, No 1 (2009)
Publisher : Jurusan Kimia FMIPA UNM

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Abstract

ABSTRAK Telah dilakukan identifikasi kuantitatif jenis-jenis asam lemak lamun dari spesies Thalassodendron ciliatum, Cymodocea rotundata, Cymodocea serrulata, Thalassia hemprichii, dan Enhalus acoroides. Analisis lemak contoh yang diambil di perairan kabupaten Donggala ini dilakukan dengan metode soxhlet dan analisis asam lemak menggunakan metode GC. Ternyata diperoleh variasi kandungan lemak antara 0,27 % - 1,01 %, sementara konsentrasi asam lemak jenuh yang ditemukan bervariasi antara 4,39 % - 8,03 %, asam lemak tak jenuh bervariasi antara 4,48 % - 18,39 %, dan omega 3 (EPA) bervariasi antara 0,27 % - 1,24 %. Hasil di atas, jika digabungkan bersama hasil analisis protein, fosfat, dan mineral dapat menjadi dasar untuk memperkirakan status kesuburan lamun. Kata kunci : Lamun, asam lemak, ABATRACT The quantitative analyses of fatty acids various was conducted from the seagrass Thalassodendron ciliatum, Cymodocea rotundata, Cymodocea serrulata, Thalassia hemprichii, and Enhalus acoroides speciess. The sampel takken from Donggala coast is analyses as the soxhlet method and the Gas Chromatography. The result obtained obstetrical variation of  fatty are vary among 0,27 - 1,01 %, for a while concentration of saturated fatty acids are vary among 4,39 - 8,03 %, unsaturated fatty acid are vary among 4,48 - 18,39 %, and omega 3 (EPA) are vary among 0,27 - 1,24 %. The result is it is joined with the protein, phosphate, and mineral analyses result can become basic for estimate the fertility status the sea grass. Keyword: Sea grass, fatty acid
Penggunaan Epiklorohidrin Dalam Meningkatkan Stabilitas Adsorben Kitosan Berikatan Silang Dan Kitosan Tercetak Ionik Kobal Qaddafi, Muhammad; Wahab, Abd. Wahid; La Nafie, Nursiah; Taba, Paulina
Al-Kimia Vol 2, No 2 (2014): Desember
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

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Abstract

The use of epichlorohydrin to improve the stability of chitosan adsorbent has been carried out. The purpose of this study was to determine the stability of the chitosan adsorbent after modified into epichlorohydrin cross-linked chitosan and ionic cobalt imprinted adsorbent chitosan cross-linked epichlorohydrin. Adsorbent prepared by homogeneous gel formation of chitosan in acetic acid medium and then modified into epichlorohydrin cross-linked chitosan beads and ionic cobalt imprinted adsorbent chitosan cross-linked epichlorohydrin. Stability of the adsorbent was determined by calculating the percentage of insoluble material after stirring the adsorbent in nitric acid medium at pH 1, 2, and 3 for 12 hours. The results of FTIR spectra show a shift of the absorption band of chitosan were compared with epichlorohydrin cross-linked chitosan and ionic cobalt imprinted adsorbent chitosan cross-linked epichlorohydrin. The use of epichlorohydrin as cross-linked agent may increase the stability of the adsorbent to maintain the percentage of insoluble material by 89% at pH 3 for epichlorohydrin cross-linked chitosan adsorbent and 96% at pH 3 for ionic cobalt imprinted adsorbent chitosan  cross- linked epichlorohydrin.
BIOSORPSI ION LOGAM Cr(VI) DENGAN MENGGUNAKAN BIOMASSA LAMUN Enhalus acoroides YANG TERDAPAT DI PULAU BARRANG LOMPO La Nafie, Nursiah; Taba, Paulina; Mahmud, Djasmawati
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 2 No 2 - December 2009
Publisher : Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta)

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Abstract

Biosorption is an alternative technique which can be used in solving environmental  pollution coming from waste containing heavy metals. Biosorption  of Cr(VI) ion using biomass of seagrass,  Thalassia hemprichii at various contact time, pH and concentration has been investigated. Biosorption was performed by a batch method and  concentration  of  ions  before  and  after  biosorption  were  measured  by  atomic absorption spectrophotometer  (AAS). The equilibrium was achieved after 80 minutes. Adsorption  effectivity  of  Cr(VI)  Enhalus  acoroides  ion  was  pH  2.  Biosorption  of Cr(VI) ion by using biomass of Enhalus acoroides followed Langmuir isotherm and the result showed that biosorption capacity (Qo) of Cr(VI) ion was 8.13 mg/g.Keywords:  biosorption, Cr(VI), seagrass, Enhalus acoroides, Langmuir isotherm.
Isolasi Dan Karakterisasi Bakteri Simbion Larva Kupu-Kupu Cossus cossus Penghasil Enzim Selulase Baharuddin, Maswati; Patong, Abd. Rauf; Ahmad, Ahyar; La Nafie, Nursiah
Al-Kimia Vol 2, No 2 (2014): Desember
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

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Abstract

This study was conducted to characterize bacterial symbionts of butterfly larvae Cossus cossus capable of degrading cellulose. This study successfully purify and characterize isolates originating  from the intestine (CC1 and CC2), head (CC3), middle (CC4), and tail (CC5). From a qualitative test using 0.1% congo red gained the clear zone indicates that the bacteria are able to degrade cellulose. Based on the test temperature and pH on the growth of the data obtained CC5 isolates including isolates of thermophilic bacteria, while others including mesophilic bacteria. While based pH test all isolates were able to grow well at neutral pH. Based on the data obtained growth curve maximum bacterial growth at the 24th hour. Based on morphology and physiology test obtained bacteria genus Acinotobacter, Pseudomonas, and Bacillus.
The Degradation of Antracene Compound Using Bacteria Isolated From Paotere Port Waterways Mirnawati, Mirnawati; La Nafie, Nursiah; Dali, Seniwati
Indo. J. Chem. Res. Vol 3 No 1 (2015): Edisi Bulan Juli (Edition For July)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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Abstract

The objectives of this study are (1) Determine the content of antrasena compound in the waste oil at the waterway of Paotere port (2) Determine the characteristics of antrasena degradation bacteria and  (3) Determine the percentage of antrasena degradation. In this research an analysis of antrasena compound was conducted with sea water that had been polluted with oil. The next steps were to isolate and characterize the degrading bacteria of antrasena and to analyze the results of antrasena degradation. The results showed that (1) Concentration of the antrasena compound in the waterway of paotere port is 4,8x10-10 ppm. (2) The bacteria can degraded of the antracene is Bacillus cereus (3) There was evidence that Bacillus cereus was able to degrade antracenr compound, the highest degradation percentage is 98,11%, it was achieved on 12 day of incubation
Analisis Logam Berat Cd Dalam Alga Eucheuma cottoni Di Perairan Kabupaten Bantaeng Teheni, Muhammad T.; La Nafie, Nursiah; Dali, Seniwati
Indo. J. Chem. Res. Vol 4 No 1 (2016): Edisi Bulan Juli (Edition For July)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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Abstract

Algae is a plant which life in the marine with a lot of diversification such as: single and multi-cellular. Commonly, it contains chlorophyll without stem and roots.  A species of algae in Indonesia which has high economic value is Eucheuma cottoni. It is cultured in Bantaeng as the central production of algae in South Sulawesi. The aim of this research is to know the concentration of heavy metals Cadmium in algae at region Bantaeng coastal. Concentration of cadmium was determined by atomic absorption spectrophotometer (AAS). This analysis was done by destruction process using concentrated HNO3. Sampling was done at 6 different location, they are: Nipa-nipa, Bakara, Boroloe, Tapaloe, Baruga village and Baruga from north to south. The experiment result show that the highest concentration of Cd is in Nipa-nipa village, with 0.2920 ppm and the lowest in Baruga village is 0.1824 ppm. The concentration of Cd in algae Eucheuma cottoni in those 6 different location had been more than limited which had been determined by the decision of national of environmental ministry  number 51 year 2004, they are 0.01 and 0.05 ppm.
Analisis Senyawa Piren pada Alga Laut Eucheuma cottoni Di Perairan Kabupaten Bantaeng Yusuf, Evana Y.; La Nafie, Nursiah; Dali, Seniwati
Indo. J. Chem. Res. Vol 4 No 1 (2016): Edisi Bulan Juli (Edition For July)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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Abstract

The compounds pyrene is one of the polycyclic aromatic hydrocarbons (HAP) which is derived from petroleum. These compounds are carcinogenic and toxic for the marine biota. The purpose of this study to determine the levels of pyrene compounds in marine algae. In this research, analysis of pyrene compounds in marine algae Eucheuma cottonii using the method of GC - MS (Gas Chromatography - Mass spectrophotometry). Sampling was conducted in the waters the Bantaeng Regency with a 6 point sampling different locations namely Nipa-nipa, Bakara, Boroloe, Tapaloe, Baruga village and Baruga. The results showed that the concentration of pyrene compounds found in marine algae Eucheuma cottonii at 6 locations in waters the Bantaeng Regency has a concentration low enough pyrene compounds that is 0009-0063 ppm. This means that the concentration of pyrene was obtained below the threshold value determined by the decision of national of Environmental ministry for the marine life.
Pengaruh Metode Sintesis Silika Mesopori SBA-15 terhadap Analisis Differential Scanning Calorimetry dan Pengukuran Low Angles X-Ray Diffraction Ridhawati, Ridhawati; Wahab, Abdul Wahid; La Nafie, Nursiah; Raya, Indah
INTEK: Jurnal Penelitian Vol 5, No 1 (2018): April 2018
Publisher : Politeknik Negeri Ujung Pandang

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Abstract

Mesoporous silica SBA-15 is an interesting material having highly ordered nanopores and large surface area, which is synthesized by sol gel and hydrothermal methods. In this study, mesoporous silica SBA-15 was synthesised with two different methods and the characteris was using X-Ray Diffraction (XRD) and Differential Scanning Calorimetry (DSC). SBA-15 was prepared TEOS as precursor and Pluronic 123 as surfactant. Thermoporous mesoporous DSC thermogram results of the SBA-15A mesoporous silica is (Tg 79oC and Tc 158oC). This is relatively lower than SBA-15B (Tg 86oC and Tc 158oC). The measurement of low angle X-Ray Diffraction SBA-15A has a crystal size 9.46 nm and SBA-15B has a crystal size 9.96 nm. The synthesis of SBA-15 using the hydrothermal method needs to be studied further to obtain thermal characteristics and a more stable crystal structure
BIOSORPTION OF Cu (II) METAL IONS BY DRAGON FRUIT SKIN (Hylocereus polyrhizus) Ali, Sahriani; La Nafie, Nursiah; Taba, Paulina
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Vol 11, No 1: June 2018
Publisher : Hasanuddin University

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Abstract

Biosorption is an effective method for removal of heavy metals from their solutions. Biosorption of Cu (II) by contact time, pH, and concentration has been investigated. Concentration of Cu (II) ion before and after adsorption was determined using Atomic Absorption Spectrophotometer (AAS). The effect of the pH process was studied at pH of 2-7. The result showed that the optimum time for biosorption of Cu (II) ion by biomass dragon fruit was 10 minutes and pH 4 was the optimum pH of biosorption. Langmuir and Freundlich models were used for the adsorption of isotherm. Result showed that biosorption of Cu (II) by dragon fruit peel fit better the Langmuir model than Freundich model with the adsorption capacity (Qo) of 20.401 mg/g biosorbent. The result of FT-IR analysis showed that hydroxyl groups were responsible for the binding of Cu (II) ions. 
UTILIZATION OF CACAO FRUIT PEEL (Theobroma cacao) AS A BIOSORBENT OF Ni(II) IONS METAL M, Malimongan; La Nafie, Nursiah; Taba, Paulina
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 8 No 1 - June 2015
Publisher : Hasanuddin University

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Abstract

Nickel is one of the heavy metals which is very dangerous because it is carcinogenic and can cause a variety of acute and chronic diseases. Biosorption is one alternative method for the removal of heavy metals from the environment using a biomaterial called biosorbent. Biosorption of Ni(II) ion using cacao fruit peel (Theobroma cacao) with variation of contact time, pH and concentration has been investigated. The concentration of Ni(II) ion before and after adsorption was determined by Atomic Absorption Spectrophotometer (AAS). The result showed that cacao fruit peel (Theobroma cacao) was able to adsorb Ni(II) ion and the optimum biosorption occured at a contact time of 10 minutes and at a pH of 5. Langmuir and Freundlich isotherm models were used to study the adsorption isotherm. Biosorption of Ni(II) ion by cacao fruit peel (Theobroma cacao) fulfilled the Langmuir isotherm with a biosorption capacity of 0,21 mmol/g. The functional groups involved in the  biosorption of Ni(II) ion by cacao fruit peel (Theobroma cacao) are –OH and N-H.