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Journal : Al-Kimia

Analisis Proksimat pada Beras Ketan Varietas Putih (Oryza sativa glutinosa) Suriani Suriani
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (262.531 KB) | DOI: 10.24252/al-kimia.v3i1.1663

Abstract

It has done research on Proximate Analysis On White Glutinous Rice Varieties (Oryza sativa glutinosa) Origin Sinjai Regency with the aim to determine the content prosimat include moisture content, ash content, crude proteincontent, fat content, crude fiber content and total carbohydrate content contained on white glutinous rice varieties (Oryza sativa glutinosa) origin Sinjai regency. This type of research is experimental research is a research laboratory that uses a simple experiment. At the proximate analysis includes determination of moisture content (%), protein content (%), fat content, ash content (%), crude fiber levels, total carbohydrate(%). The results showed that the water content ranges for % 16.24%, for protein content ranged from 6.81%, forfat content ranged from 0.19 % to 0.24% ash content ranges, for fiber content ranged  from 0.28% and for carbohydrate content ranged from 76.24 %.
Sintesis Etil Ester Dari Minyak Biji Kemiri (Aleurites molluccana) Menggunakan Metode Ultrasonokimia Yunizar AL; Aisyah Aisyah; Suriani Suriani
Al-Kimia Vol 3 No 2 (2015): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (275.291 KB) | DOI: 10.24252/al-kimia.v3i2.1674

Abstract

The availability of the fuel oil in the world are declining, so that alternative energy is needed to meet the needs of the fuel. One of the alternative energy is biodiesel (ethyl/methyl ester). The research aimed to determine the optimal conversion value of ethyl ester, to identify ester components and their concentration. The biodiesel was produced from candlenut oil (Aleurites mollucana) ethanol by the ratio of 1:6 using 0.5% KOH catalyst which reacted by utilizing ultrasonic wave (47 kHz) for 45, 60 and 75 minutes. Biodiesel conversion value were 3.9%, 1.6% and 1.2% respectively. The biodiesel obtained then were analyzed by FTIR and result the pattern of fatty acid ethyl esters. In addition, analysis by GC-MS revealed the concentration under variation times of ethyl palmitate, ethyl linoleic, ethyl oleic and ethyl stearic from variation time  45,  60  and  75 minutes. They were 6.34%, 1.76% and 1.56%), (25.94%, 6.46% and 7.46%), (31.42%, 8.17% and 8.79%) and 2.13%.
Karakterisasi Zat Warna Tomat (Solanum lycopersicum) FRAKSI Metanol:N-Heksan Sebagai Photosensitizer Pada Dye Sensitized Solar Cell (DSSC) Nur Hasbi Wahab; Aisyah Aisyah Aisyah; Suriani Suriani
Al-Kimia Vol 4 No 2 (2016): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1208.231 KB) | DOI: 10.24252/al-kimia.v4i2.1678

Abstract

One of the potential alternative energy to be developed to overcome energy crisis in the world is an DSSC. This research aimed to make a series of Dye Sensitized Solar Cell (DSSC) using an organic dye from crude extract of tomato as a photosensitizer. The dye obtained from the maceration by of ultrasonic waves using methanol. Separation was done by KKCV using eluent of methanol: n-hexane (3: 7, 1: 1, 7: 3). The best efficiency value (Ƞ) in the series of DSSC that results from the fraction methanol: n-hexane (1:1) was 0.0249%. Characterization using spectrophotometer UV-Vis showed a maximum absorption at wavelength of 447 nm which is the absorption of carotene  compound. FTIR analysis showed that samples generally have -CH2-, C=C and OH strecth wich are the characteristic of carotene compound. GCMS analysis showed that dye components which estimated is dihydroxy lycopene of the retention time 10.93 with a molecular ion peak at m/z 91.
Dekolagenasi Limbah Tulang Paha Ayam Broiler (Gallus domesticus) oleh Natrium Hidroksida (NaOH) untuk Penentuan Kadar Kalsium (Ca) dan Fosfat (PO4) Sitti Musdalifah; Syamsidar HS; Suriani Suriani
Al-Kimia Vol 4 No 2 (2016): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1358.709 KB) | DOI: 10.24252/al-kimia.v4i2.1682

Abstract

This research aims to determine the level of Calcium (Ca) and Phosphate (PO4), and the influence of broilers femur submersion in NaOH toward Calcium (Ca) and Phosphate (PO4) levels. The method used in this research is decollagenation of broilers (Gallus domesticus) femur. Then, the parameters observed are chemical tests of Calcium (Ca) and Phosphate (PO4) levels. Decollagenation treatment was carried out in three soaking-time variation such as 42 hours, 72 hours, and 96 hours to respectively determine the Calcium and Phosphate levels. The result shows that soaking-time of femur does not give significant effect to increased levels of Calcium (Ca) and Phosphate (PO4).
Isolasi Senyawa Bioaktif Antibakteri Pada Ekstrak Etanol Teripang Pasir (Holothuria scabra) di Kepulauan Selayar Yuliana Yuliana; Asriani Ilyas; Suriani Suriani
Al-Kimia Vol 5 No 1 (2017): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v5i1.2340

Abstract

Abstract: Sand sea cucumber (Holothuria scabra) is one type of marine invertebrates with family Holothuriidae and is a member of Enchinodermata animals. Types of animals have been used as raw  materials in traditional medicine. The aims of this reseach are to isolate the bioactive compounds contained in the ethanol extract of sand sea cucumbers and to know its major bioactivity. This research conducted in several methods namely extraction, fractionation, identification using thin layer chromatography (TLC) and qualitative test to determine secondary metabolites, as well as the characterization by FTIR. Results obtained from the isolation is a pure isolate by weight of 0.0203 grams of yellowish white paste. Purification was performed using three systems eluent as well as FTIR spectroscopy. The results showed that the compounds in pure isolates are alkaloids. Viscous extract and pure isolates subsequently tested its antibacterial test disc diffusion method using bacteria Salmonella thypi and Staphylococcus aureus. The results showed that the extract activity of the bacteria Salmonella thypi and Staphylococcus aureus into the strong category with optimum diameter of clear zone respectively 11.50 mm and 12.30 mm. Keyword: Bioaktive Compound, Disc Diffusion, Isolation, Sand Sea Cucumber (Holothuria scabra).
Photosenzitizer dari Fraksi Metanol: N-Heksana Buah Cabe Merah (Capsiccum Annum L.) Muh Shiddiq Maming; Aisyah Aisyah; Suriani Suriani; Iswadi Iswadi
Al-Kimia Vol 5 No 1 (2017): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v5i1.2846

Abstract

A research has been done on the dye components from the extract of red pepper (Capsiccum annum L) which is potentially used as photosensitizer. This study aims to determine the efficiency and the characteristics of the dye. The efficiency is measured on a cell made of glass ITO 100 Ω and a technical semiconductor TiO2. The pepper extract obtained from the ultrasonic maceration by methanol which then purified using a chromatography column using the ratio of 1: 4, 1: 1 and 4: 1 methanol:n-hexane. The results showed that the efficiency of the crude extract, fraction by ratio of 1:4; 1: 1 and 4: 1 are respectively 0.027%, 0.012%, 0.013% and 0.034%. Subsequently, the best efficiency fraction was characterized by using FTIR, UV-Vis and GC-MS. The wavelength of visible light obtained at 466 and 443 nm which is corresponds to the wavelength of carotene. The components indicate absorption  at 1631.78 cm-1, 3008.95 cm-1 and 2992 cm-1 that are characteristic of carotenoid whereas, that of 1739 cm-1 and 3446.79 cm-1  are carbonyl and hydroxyl group of xantofil. According to the GC-MS fragmentation pattern, the carotenoid compounds identified by mass abundace at 91 and 105.