Ekstraksi dan Karakterisasi Senyawa Besi Oksida dari Batuan Vulkanik Pulau Ambon menggunakan Metode Kopresipitasi

Senyawa besi oksida pada batuan vulkanik Pulau Ambon memiliki potensi untuk dimanfaatkan sebagai material maju di masa depan. Untuk memanfaatkan potensi tersebut diperlukan sebuah usaha dengan cara mengekstraksi senyawa besi oksida. Pada penelitian ini metode kopresipitasi digunakan untuk mengekstraksi senyawa besi oksida. Hasil ekstraksi kemudian dikarakterisasi menggunakan beberapa instrumen seperti X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), dan Scanning Electron Microscope (SEM). Hasil karakterisasi menunjukkan senyawa besi oksida yang dihasilkan memiliki tingkat kemurnian dibawah 50%. Fasa mineral oksida yang terdeteksi dari data XRD adalah magnetit (Fe3O4), maghemit (-Fe2O3), dan hematit (-Fe2O3). Ukuran kristal secara rata-rata dibawah 15 nm dengan ukuran partikel rata-rata diatas 700 nm. Struktur morfologi permukaan terdapat aglomerasi dengan bentuk permukaan yang bulat. Hasil ini menunjukkan metode kopresipitasi telah berhasil mendapatkan senyawa besi oksida dari batuan vulkanik Pulau Ambon

Effect of Tamarind (Tamarindus indica L.) Extract To Histamine Content In Bullet Tuna (Auxis rochei)

The research to determine histamine content in bullet of tuna (Auxis rochei) with variation of tamarind (Tamarindus indica L.) extract concentrations and time of marinate has been done. The histamine content is determined quantitatively by using ultraviolet-visible spectrophotometer with the calibration curve method. The result showed that histamine content in bullet tuna marinated in tamarind extract with varied concentrations of 5%, 10%, 15%, and 20% within 10 minutes, are 37.4561, 35.3041, 23.8778, and 22.1186 mg/100 g respectively. While, the concentrations of histamine in bullet tuna marinated in 20% of tamarind extract with variation of 10, 20, 30, 40, and 50 minutes, are 22.2965, 19.7544, 17.6925, 11.5865, and 8.0396 mg/100 g respectively. A qualitatively, visual comparison of colour intensity of samples with reference colour scale of the standard solution concentration can be used to determine concentrations of histamine without the aid of a spectrophotometer

Seminar Nasional Penelitian, Pendidikan, dan Penerapan MIPA 2009

Antihistamin merupakan salah satu jenis obat yang pemanfaatannya dalam bidang medis dan farmasi sangat luas. Selain dipakai untuk mengobati bermacam gangguan alergi juga dipakai sebagai antikolinergis, antiemetis, antiphlogistis, sedativum, antiserotonin dan memiliki aktivitas anastetik lokal. Beragamnya penggunaan dan prevalensi penyakit yang terus meningkat mendorong perlunya pengawasan dan kontrol kualitas obat. Deksklorfeniramin maleat adalah antihistamin derivat propilamin dan merupakan salah satu antihistamin yang banyak direkomendasikan. Penelitian ini bertujuan mempelajari perilaku antihistamin deksklorfeniramin maleat di permukaan elektroda pasta karbon pada pengukuran secara voltametri. Studi voltametri terhadap deksklorfeniramin maleat telah dilakukan dengan menggunakan teknik voltametri siklik dan voltametri pulsa diferensial. Rentang potensial pengukuran yang dapat dipakai untuk studi antihistamin deksklorfeniramin maleat adalah -200 sampai dengan 600 mV terhadap potensial Ag/AgCl. Studi voltametri dilakukan dengan menggunakan elektroda kerja pasta karbon dengan perbandingan komposisi grafit : parafin adalah 70 % : 30 %. Berdasarkan data arus puncak yang diperoleh dari voltamogram siklik dan kajian awal voltametri pulsa diferensial, dapat disimpulkan bahwa penentuan deksklorfeniramin maleat dapat dilakukan dengan menggunakan metode voltametri

ANALISIS TIMBAL DALAM LINDI (Leachate) SECARA KOAGULASI MENGGUNAKAN POLIALUMINIUM KLORIDA

Leachate is a liquid arising from the decomposition of waste that has decayed due to the flow of external water into the landfill. Leachate can be toxic. generally, leachate contains several high inorganic metals, including lead. Lead is one type of heavy metal that has a high toxicity. This study aims to determine the initial concentration of lead (Pb) in leachate and the percent efficiency of polyaluminium chloride (PAC) coagulant in reducing lead levels in IPST Toisapu, Ambon City. Lead content was analyzed by coagulation using an atomic absorption spechtrophotometer (AAS). Coagulation is a chemichal process used to remove particles that can cause environmental pollution. The coagulant used is a polyaluminium chloride coagulant. The results of the analysis showed that the initial lead concentration at IPST Toisapu was 2.7670mg/L and the percentage of PAC coagulant efficiency was 500, 600, 700, 800 and 1000 mg/L respectively 61,59%; 69,92%; 73,55%; 77,17% and 84,79%. The results showed that PAC coagulant was effective in reducing lead levels in leachate

Effect of Tamarind (Tamarindus indica L.) Extract To Histamine Content In Bullet Tuna (Auxis rochei)

The research to determine histamine content in bullet of tuna (Auxis rochei) with variation of tamarind (Tamarindus indica L.) extract concentrations and time of marinate has been done. The histamine content is determined quantitatively by using ultraviolet-visible spectrophotometer with the calibration curve method. The result showed that histamine content in bullet tuna marinated in tamarind extract with varied concentrations of 5%, 10%, 15%, and 20% within 10 minutes, are 37.4561, 35.3041, 23.8778, and 22.1186 mg/100 g respectively. While, the concentrations of histamine in bullet tuna marinated in 20% of tamarind extract with variation of 10, 20, 30, 40, and 50 minutes, are 22.2965, 19.7544, 17.6925, 11.5865, and 8.0396 mg/100 g respectively. A qualitatively, visual comparison of colour intensity of samples with reference colour scale of the standard solution concentration can be used to determine concentrations of histamine without the aid of a spectrophotometer

Effect of Tamarind (Tamarindus indica L.) Extract To Histamine Content In Bullet Tuna (Auxis rochei)

The research to determine histamine content in bullet of tuna (Auxis rochei) with variation of tamarind (Tamarindus indica L.) extract concentrations and time of marinate has been done. The histamine content is determined quantitatively by using ultraviolet-visible spectrophotometer with the calibration curve method. The result showed that histamine content in bullet tuna marinated in tamarind extract with varied concentrations of 5%, 10%, 15%, and 20% within 10 minutes, are 37.4561, 35.3041, 23.8778, and 22.1186 mg/100 g respectively. While, the concentrations of histamine in bullet tuna marinated in 20% of tamarind extract with variation of 10, 20, 30, 40, and 50 minutes, are 22.2965, 19.7544, 17.6925, 11.5865, and 8.0396 mg/100 g respectively. A qualitatively, visual comparison of colour intensity of samples with reference colour scale of the standard solution concentration can be used to determine concentrations of histamine without the aid of a spectrophotometer

ANALISIS KADAR KALSIUM (Ca) DAN FOSFOR (P) PADA DAUN KECIPIR (Psophocarpus tetragonolobus L) DI PULAU AMBON DAN SERAM BAGIAN BARAT

One of the leaves that can be consumed to fill nutritional need for people’s is kecipir leaves (Phosphocarpus tetragonolobus L). This leave contains minerals among them caloium, potassium and phosphorus but the level is calcium potassium and phosphorus at kecipir not yet know. Therefor this study was making conduoted to find out level of caloium, potassium and phosphorus in kecipir leave at two different location that is Urimesing village and Eti village. Calcium and potassium levels are analyzed SSA while phosphorus levels are analyzed UV-VIS analysis result indicate calcium, potassium, phosphorus level in kecipir leaves at urimeseng village is 904,25 mg/100g, is 100,46 mg/100g and calcium potassium, phosphorus levels in kecipir leave at Eti village is 1.162,59 mg/100g and 190,498 mg/100g. based on these result obtained calcium, potassium and phosphorus levels with different values from each sampling location. This happened because of geographic location, soil structure and water content greatly affect the levels of calcium, potassium, and phosphorus

Pelatihan Pembuatan Cuka Kelapa dari Air Kelapa Kepada Ibu-Ibu PKK Negeri Kilang

Pelatihan pembuatan cuka kelapa telah dari air kelapa dilaksanakan kepada ibu-ibu PKK Negeri Kilang, Kecamatan Leitimur Selatan, Kota Ambon. Tahap-tahap kegiatan pelatihan dilaksanakan dalam tiga tahap yaitu persiapan, pelaksanaan, dan evaluasi. Pada tahap persiapan, tim melakukan survei pendahuluan untuk mengetahui kondisi lapangan, tempat/lokasi yang digunakan. Selanjutnya tim menyiapkan bahan dan perlengkapan yang digunakan untuk pembuatan cuka kelapa. Pada tahap pelaksanan, tim melakukan penyuluhan kepada ibu-ibu PKK dengan menyampaikan materi tentang cara pembuatan cuka kelapa dan manfaat cuka kelapa. Kemudian dilanjutkan dengan proses pembuatan cuka kelapa. Air kelapa bersih dimasukkan dalam stoples, ditambahkan ammonium sulfitt dan ragi, diaduk, dan ditutup, kemudian dibiarkan selama 6 hari untuk terjadi proses fermentasi (proses fermentasi). Setelah 6 hari hasil fermentasi dipanaskan untuk memisahkan cuka dengan alkohol. Larutan yang tertinggal merupakan cuka sedangkan alkohol telah menguap. Pada tahapan ini seluruh peserta dilatih bagaimana cara membuat cuka kelapa. Tahap ketiga yaitu tahap evaluasi, dilakukan untuk mengukur tingkat keberhasilan kegiatan yang telah dilakuka. Hal ini dapat dilihat dari antusias dan semangat peserta dalam membantu proses pembuatan cuka tersebut. Luaran yang dihasilkan adalah produk kreatifiitas tanaman kelapa yaitu cuka kelapa yang telah dibuat ibu-ibu PKK Negeri Kilang untuk dapat dimanfaatkan sehari-hari

ANALISIS KOMPONEN ASAM AMINO IKAN LAYANG DELES (Decapterus Makrosoma) HASIL OLAHAN TRADISIONAL BERDASARKAN LAMA PENYIMPANAN

The aim of this study was to determine the amino acid composition of traditional processed Layang Deles fish (Decapterus macrosoma) which was stored for 2 months. Analysis of amino acid content using by Ultra Performance Liquid Chromatography (UPLC) instrument after content of water and lipid in sample was removed. The results of the analysis showed that there was a change in the concentration of 15 amino acids measured ranging from 85.17% to 2,873.42% in acid hydrolysis and 88.18% to 28.73% in alkaline hydrolysis. The biggest changes occurred in histidine, arginine and serine amino acid concentrations of 2,873.42%, 2,606.74% and 900.00% in acid hydrolysis and in amino acids serine, aspartic acid and histidine which were 88.17%, 62, 99% and 40.02% in alkaline hydrolysis. Based on the results of the research, it can be concluded that the processing of inmana fish with a storage period of 2 months affects the amino acid components of Layang Deles fish (Decapterus macrosoma)

An Ergonomic Intervention to Redesign Fish Smoking Device of Home Industry

Smoke and heat become the contributors for increasing temperature and humidity in the production room, and workload of workers, and decreasing work productivity of a smoked fish home industry in Hative Kecil Village, Ambon City, Indonesia. This paper was aimed to redesign a fish smoking device with ergonomic consideration for solving the problem. An ergonomic intervention method applied to redesign the device. Redesign process describe result of ergonomic assessment in to the stages of rational method in order to produce new design. Despite the environmental variable (temperature and humidity), 10 male workers (age 40-50 year) were assessed their characteristics consisting of personal, anthropometric, workload and work productivity data. Final results presented a decreasing temperature (15.03%), humidity (8.06%), and workload of workers (75.89%) while work productivity increased 88.92%. It concluded that the device redesign can improve temperature, humidity, workload of workers and work productivity in the smoked fish home industry