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All Journal Chemistry Indonesian Journal of Chemical Research Molluca Journal of Chemistry Education (MJoCE)
Rosmawaty Rosmawaty
Chemistry Department, Faculty Of Mathematics And Natural Sciences, Pattimura University
Biochemistry, Genetics & Molecular Biology Chemistry Education Engineering Environmental Science

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PEMANFAATAN KATALIS Ca3(PO4)2 DARI TULANG IKAN TUNA PADA PEMBUATAN BIODIESEL DARI MINYAK BINTANGGUR (Callophyllum inophyllum L) Rosmawaty Rosmawaty; I Wayan Sutapa; Desy Kamanasa
Molluca Journal of Chemistry Education (MJoCE) Vol 8 No 1 (2018): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol8iss1pp12-24

Abstract

Biodiesel synthesis from bintanggur oil (Callophyllum inophyllum L.) has been done through esterification and transesterification process with Ca3(PO4)2 catalyst and methanol solvent. Production of Ca3(PO4)2 catalyst process was conducted by calcination of the Tuna’s bone at 1000ºC for 2 hours. The catalyst result was got 58.75% and then been characterized with XRD. The esterification process was performed with methanol and bintanggur oil in molar ration of 1:9 for 2 hours with 1.25% H2SO4. The transesterification process was conducted with bintanggur oil and methanol in molar ratio of 1:12 for 9 hours with 10% Ca3(PO4)2 catalyst. The conversion result by 1H-NMR is 73.76% and experimentally was 56.87%. Biodiesel was analyzed with FTIR, GC-MS, 1H-NMR and ASTM. ASTM testing result show there are spesific density of 0.9204 g/cm3, kinematic viscosity of 29.68 mm2/s, flash point at 188.5ºC, pour point at 6ºC, Conradson carbon residue of 0.162%, water content 0.175%, and copper strip corrosion of 1b
PEMANFAATAN GETAH BUAH PEPAYA UNTUK MENINGKATKAN KUALITAS KIMIA DAGING KERANG DARAH (Anadara granosa) DENGAN BEBERAPA METODE PENGOLAHAN Ivonne Telussa; Rosmawaty Rosmawaty; Jolantje Latupeirissa
Molluca Journal of Chemistry Education (MJoCE) Vol 8 No 1 (2018): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol8iss1pp25-35

Abstract

Getah buah papaya diambil dan diisolasi enzim papain kemudian ditambahkan dalam proses pengolahan daging kerang darah baik dengan cara direbus maupun dikukus dan sebagai pembandingnya dilakukan hal yang sama untuk daging kerang darah baik di rebus dan dikukus tanpa penambahan enzim papain hasil isolasi tersebut. Dilakukan Uji kualitas kimia daging kerang darah (Anadara granosa) hasil olahan melalui analisis proksimat dan analisis asam lemak. Hasil penelitian menunjukkan berat molekul dari enzim papain yang diisolasi dari Getah buah papaya adalah 21 kDa. Komposisi proksimat yang terbaik dibandingkan dengan kontrol (tanpa penambahan enzim papain) adalah pengolahan dengan penambahan enzim dimana pengolahan direbus dengan penambahan enzim diperoleh pH 6.757, Kadar air 68.21, kadar lemak 5.66598, dan kadar abu 1.78764 sedangkan dengan dikukus diperoleh pH 6.437, Kadar air 59.29, kadar lemak 4.22242, dan kadar abu 2.35173. Kadar protein dan nilai susut masak tertinggi berturut-turut pada perlakuan penambahan enzim papain sebesar 67 % dan 50.94 sedangkan terendah pada perlakuan tanpa penambahan enzim papain sebesar 18 % dan 40.18. Hasil analisis asam lemak dengan metode GC-MS menunjukkan bahwa kerang darah tanpa penambahan enzim mengandung 6 jenis asam lemak yaitu metil ester asam meristat (4.15%), metil ester asam palmitoleat (8,81%), metil ester asam palmitat (19.24%), metil ester asam oleat (3.43%) metil ester asam stearat (14.09%) dan metil ester arakidonat (5.19%) sedangkan kerang darah dengan penambahan enzim mengandung 7 jenis asam lemak yaitu metil ester asam meristat (5,25%), metil ester asam palmitoleat (9.62%), metil ester asam palmitat (21.54%), metil ester asam oleat cis (3.97%), metil ester asam oleat trans (4.20%), metil ester asam stearat (13.33%) dan metil ester arakidonat (5.15%).
Screening Of Phytochemicals And Bioactivity Test Of The Leaves Breadfruit (Artocarpus altilis) Rosmawaty Rosmawaty; Hellna Tehubijuluw
Indonesian Journal of Chemical Research Vol 1 No 1 (2013): Edisi Pertama (First Edition)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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Abstract

Screening phytochemical and bioactivity test of breadfruit leaves (Arthocarpus altilis) have been done. The samples were used in the study extracted by maceration method with some solvent polarity enhanced, there are: n-hexane, chloroform, ethyl acetate, and methanol. The bioactivity test use BST (Brine Shrimp Lethality test). The activity assay use brine shrimp A. salina Leach. Content of the secondary metabolites in four crude extract of leaves of breadfruit (A. altilis) are alkaloids, steroids, terpenoids, and flavonoids. Whereas only phenolic compounds contained in the crude extract of chloroform and methanol. The saponins content only in the crude extract methanol. The fourth test of bioactivity of the crude extract of leaves of breadfruit there are: n-hexane, chloroform, ethyl acetate, and methanol had LC50: > 1000 mg / mL; 387.436 mg / mL; 415.623 mg / mL; and 392.826 mg / mL respectively. The crude extract of chloroform, ethyl acetate, and methanol classified active in the BST test to brine shrimp A. salina, while the crude extract n-hexane classified as inactive. The Leaves of breadfruit (A. altilis) has potential to be used as medicine.
Biodiesel Production From Bintanggur Oil (Callophyllum inophyllum L.) Using Calsium Oxide (CaO) Catalyst I Wayan Sutapa; Rosmawaty Rosmawaty; Ismah Samual
Indonesian Journal of Chemical Research Vol 1 No 1 (2013): Edisi Pertama (First Edition)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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Abstract

The research of the biodiesel from bintanggur oil (Calophyllum inophyllum L.) using calsium oxide (CaO) catalyst had been done. In this study, a two-step process was used to produce biodiesel from bintanggur oil. Initially by esterification process using H2SO4 1.25% catalyst by weight of oil and methanol with a molar ratio of 1:9 and continued by transesterification process with 1:12 (oil : methanol) with the catalyst 8 wt% CaO. The esterification and the transesterification process carried out of 2 hours and 7 nespectively at a 65 °C. The synthesis of biodiesel was analyzed by FT-IR spectrophotometer. The conversion of biodiesel is 44.49%. The biodiesels properties were caracterized by ASTM method. Results of biodiesels properties there are specific gravity of 0.8878 g/cm3, viscosity kinematic 5.572 cSt, flash point 176.5 °C, pour point 9 °C, cooper strip corrosion 1b, and Conradson carbon residue 2.469%.
The Utilitasion of Beef Tallow Into Biodiesel With Heterogenous Catalyst Adriani Bandjar; I Wayan Sutapa; Rosmawaty Rosmawaty; Nurlina Mahulau
Indonesian Journal of Chemical Research Vol 2 No 1 (2014): Edisi Bulan Juli (Edition For July)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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Abstract

The research of utilitasion of beef tallow into biodiesel with heterogenous (CaO) catalyst has been conducted. Biodiesel production initially by esterification reaction with catalyst H2SO4 1% (toward oil and methanol weight) with molar ratio oil : methanol (1:9). After esterification process, trygliceride separated from methanol and continued by transesterification step with molar ratio 1:12 (oils and methanol) and CaO catalyst 11% wt. Esterification and transesterification process carried out for 2 hours and 6 hours respectively at 65 ℃. Composition of the biodiesel was analyzed by 1HNMR, Gas Chromatography-Mass Spectrometry (GC-MS) and their physical properties analyzed by ASTM method. Result of biodiesel conversion is 93.99% while based on GC-MS analysis showed that mayor component of biodiesel were mixture of methyl esters with methyl octadecanoat as the major coumpound (40.65%). Based on data from ASTM, biodiesel produced from beef tallow have qualified as diesel fuel.
Optimation Transesterification Reaction Conditions on Biodiesel Production From Beef Tallow Rosmawaty Rosmawaty; Adriani Bandjar; Suntoro Gunoroso
Indonesian Journal of Chemical Research Vol 2 No 2 (2015): Edisi Bulan Januari (Edition For January)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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Abstract

Biodiesel synthesis has been done from beef tallow through two step, esterification and transesterification reactions. Esterification process is done by using H2SO4 1M as a catalyst, methanol 1:9, temperature of 60-65°C, and for 3 hours. After separated between methanol and trigyceride, then proceed to the process of transesterification. To obtain the optimum reaction conditions then used some transesterification process variables, there are: the weight percentage catalyst of KOH between 0.1, 0.5, 1; 1.5, and 2%, the reaction time of 1-5 hours and the reaction temperature between 50 -70 oC. Optimum conditions of transesterification reaction for the synthesis of biodiesel derived from beef tallow with KOH catalyst is as follows: the weight percentage of 1% KOH catalyst, the reaction time of 3 hours and the reaction temperature of 65 oC. The results of physical testing of biodiesel fuel by ASTM method includes specific density of 0.8675 g/cm3, kinematic viscosity of 4.971 mm2/s, flash point of 134.5°C, pour point of 27°C, the Conradson carbon residue of 0.018%, and the copper corrosion-pieces of 1B.
Co-Authors Adriani Bandjar Desy Kamanasa Hellna Tehubijuluw I Wayan Sutapa Ismah Samual Ivonne Telussa Jolantje Latupeirissa Nurlina Mahulau Suntoro Gunoroso