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INDONESIA
ALKIMIA : Jurnal Ilmu Kimia dan Terapan
Published by Universitas Islam Negeri Raden Fatah Palembang
ISSN : 25809873     EISSN : 25809881     DOI : -
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Social Sciences
ALKIMIA : Journals of chemistry and applied science with number of E-ISSN: 2580-9881 and P-ISSN: 2580-9873 is a journal of chemistry that publishes research results related to the findings in the field of organic chemistry, inorganic, physical, analytical, biochemical and other as a problem solving in the field of environment, energy, and food. ALKIMIA is published twice a year in February and August, by chemistry science and technology faculty of UIN Raden Fatah Palembang. The editors are happy to invite researchers to publish their research results at Journal ALKIMIA.
Arjuna Subject : -
Articles 79 Documents
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Determination of Boric Acid Levels in Food Samples Using the UV-Vis Spectrophotometry Method Anjelli Putri Gunawan; Alidya Fitri Kusuma Wardani; Ria Hikmarina; Rahmi Rahmi; Madyawati Latief
ALKIMIA Vol 6 No 2 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/alkimia.v6i2.14519

Abstract

Food is a basic need for every human being to grow and maintain life. In food there is what is called BTP or Food Additives. According to the Regulation of the Minister of Health of the Republic of Indonesia No. 033 of 2012 concerning food additives , boric acid or borax is one of the types of food additives that are prohibited from being used in food products. However, in reality many people still use boric acid as BTP in producing food. The purpose of this study was to identify and determine boric acid levels in food samples. Quantititative analysis was performed using the liquid curcumamine addition method, while quantitative analysis used the UV-Vis spectrophotometry method at a maximum wavelength of 540 nm. The results of the identification and determination of boric acid levels showed that sample A had a color change from purplish red to brick red which indicated that the food sample was positive for containing boric acid. The average level of boric acid in sample A was 986.947 ppm. The %RSD value obtained is 1.583% which indicates that this test has good precision.
Nutritional Content Analysis of Fortified Cookies from "Patin" bone flour waste and coconut dregs Muhammad Aziz; Endang Fitriana; M. Risqi Sandi Pratama; Rahmi Rahmi
ALKIMIA Vol 6 No 2 (2022): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/alkimia.v6i2.14807

Abstract

Lack of intake can cause disturbances in health, growth, mental and other functions such as cognitive abilities, the immune system and reproduction. This problem can be overcome by carrying out food fortification, namely adding certain types of nutrients to food ingredients. Fortification can be made from food ingredients such as coconut dregs and Patin bones. These materials can be processed into flour as a source of nutritious food. Coconut dregs has a fairly high protein content and Patin bones have a high calcium content that the body needs for the growth process. This study aims to make nutritious food fortification by utilizing the local potential of Patin bones and coconut dregs, then an analysis of the moisture content, ash content, protein content, fat content, carbohydrate content and fiber content is carried out. The results of the analysis showed that Patin bone flour was obtained and coconut dregs flour contained water content, ash content, protein content, fat content, carbohydrate content and fiber content respectively were 3.02%, 6.29%, 6.21%, 20.89%, 64.08% and 6.58%. From the results of this analysis it can be concluded that Cookies with the addition of Patin bone flour and coconut dregs flour has good nutritional content. This research is expected to be used as one of the food innovations to support attempt fulfill the micronutrient nutrition needed for the human body.
Innovation of Avocado Leaf-Based Jelly Candy with the Addition of Beef Gelatin. Rahmawan Wira Ghani, Sulung
ALKIMIA Vol 7 No 1 (2023): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/8pryw191

Abstract

This study aims to develop avocado (Persea americana Mill) leaf-based jelly candy with the addition of bovine gelatin, in response to the increasing demand for herbal food and beverage products in Indonesia. Product quality testing was conducted to determine moisture content, pH, texture, and organoleptic analysis. The results showed that all jelly candy formulas met the set standards for moisture content, with a pH that was classified as acidic and ranged from 3.35 to 4.56. The texture of the jelly increased with increasing gelatin concentration, and formula 5 obtained the highest score in the organoleptic test, indicating panelists' preference for color, aroma, taste, and texture. The conclusion of this study is that the formulation of bovine gelatin addition has a significant effect on the quality of jelly candy, with formula 5 being the most preferred. 
ANTIBACTERIAL EFFECTIVENESS OF EXTRACTS AND FRACTIONS OF TELANG LEAVES AGAINST SALMONELLA TYPHI BACTERIA Rustanti, Elly Rustanti; Semi, Semi; Puspita Aryani, Hany
ALKIMIA Vol 7 No 1 (2023): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/1exg7773

Abstract

Telang leaves are plants that are very easy to find and contain flavonoids, flavanols, kaempferol, quercetin and myrisetin. From the results of various studies, Telang leaves have pharmacological influences as antimicrobials, one of which is for the treatment of typhoid fever (typhoid). Typhoid fever is still one of the endemic diseases in Indonesia and this disease is caused by infection with the bacterium Salmonella typhi. The purpose of this study was to determine the effectiveness of extracts and fractions of telang against the growth of Salmonella typhi. The research method used is experimental laboratory. The test was carried out by extracting Telang leaves by maceration method, then evaporated with a rotary evaporator so that concentrated extracts were obtained and then fractionated using organic solvents n hexane, chloroform and ethyl acetate. Test of antibacterial activity of extracts and fractions against Salmonella typhi bacteria was carried out by disc diffusion method. with DMSO negative control and Amoxcilin positive control. The results showed that the ethylacetate fraction showed the strongest inhibitory zone when compared to ethanol extract against Salmonella typhi. The ethylacetate fraction is able to produce inhibitory power of 18.4 mm, while the striped leaf extract only inhibits 15.5 mm in the medium category. Based on the test results, it can be concluded that the ethyl acetate fraction and ethanol extract are effective in inhibiting the growth of Salmonella typhi bacteria, while the n-Hexane, water and chlorophome fractions show weak antibacterial activity.
Nanoencapsulation of Pelawan Stem Extract (Tristaniopsis merguensis Grifft.) Using Polycaprolactone (PCL) Mahardika, Robby Gus; Shakila, Shania; Budi Kurniawan, Widodo; Amelia, Ririn
ALKIMIA Vol 7 No 1 (2023): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/wr4fqj14

Abstract

Formulation of nanoencapsulation using variations in the mass of Pelawan stem extract at (A) 0.15; (B) 0.25; and (C) 0.35 g combined with the addition of 0.5% PCL (Polycaprolactone) and Tween 80. Based on the analysis, the resulting nanocapsule sizes were 559.2, 447.2, and 297.0 nm, respectively, indicating that the nanoencapsulation of Pelawan stem extract has achieved nanoscale dimensions. The polydispersity index (PI) values for Pelawan stem extract formulas A, B, and C were 0.645, 0.687, and 0.476, respectively. Formula C has a PI value of less than 0.5, indicating that nanocapsules in formula C are more uniform. Formula C was the best formulation, with the smallest size and lowest PI. The Pelawan stem extract, rich in phenolic compounds, packaged in nanocapsule form through a simple nanoencapsulation process, holds potential as a future nutraceutical product.
Evaluation of Syzygium myrtifolium leaves extract as an eco-friendly inhibitor for steel in reinforced concrete Alwi Syahara, Muhammad
ALKIMIA Vol 7 No 1 (2023): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/ncgwn334

Abstract

Reinforced concrete is a concrete mixture that is reinforced with steel to strengthen the concrete in a building construction. One of the problems with steel is corrosion which can damage the concrete structure. One way to inhibit the corrosion process is to inhibit the corrosion rate using organic/eco-friendly inhibitors. A potential eco-friendly inhibitor is Syzygium myrtifolium leaves. This study aims to determine the corrosion rate and inhibition efficiency in reinforcing steel (BjTP) 280. This research method begins with maceration of Syzygium myrtifolium leaves using 96% alcohol for 96 hours. Then BjTP 280 is immersed in concentrated extract with variations in immersing time of 0 hours, 24 hours, 72 hours, 120 hours, and 168 hours. Furthermore, BjTP 280 is used in K350 quality concrete structures. Calculation of corrosion rate using weight loss method based on ASTM G 31-72, corrosion testing based on ASTM C 876-91 by immersing concrete in 3.5% NaCl corrosive media solution and flowing 6 V DC current for 14 days. The corrosion rate (mm/year) in each variation of immersion in inhibitor decreased, respectively 875.95 (0 hours); 298.66 (24 hours); 99.55 (72 hours); 79.73 (120 hours); 42.66 (168 hours). Meanwhile, the inhibition efficiency value (%) increased successively, namely -% (0 hours); 65,9% (24 hours); 88,63% (72 hours); 90,93% (120 hours); 95,12% (168 hours). The results showed the best corrosion rate reduction of 42.66 mm/year with inhibition efficiency of 95,12% obtained at 168 hours of immersion.
Eco-friendly Removal of Methylene Blue Using Alginate-Activated Natural Clay Composite Rasidah, Rasidah; Jumiati, Jumiati; Nugroho, Wahyu; Agnestisia, Retno; Karelius, Karelius; Alfanaar, Rokiy; Muhamad Iqbal, Rendy
ALKIMIA Vol 7 No 1 (2023): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/591htf60

Abstract

Methylene blue is a poisonous, persistent, and non-biodegradable dye frequently found in textile industry wastewater that significantly influences the emergence of various environmental and health problems. Therefore, precautions must be taken to reduce the amount of methylene blue in the wastewater. Compositing clay into alginate produces an eco-friendly adsorbent, alginate-activated clay composite beads (Ag-AC 1-5%), successfully removing methylene blue. XRD and FTIR spectroscopy characterization results show that illite, a family of 2:1 clay minerals, is a primary constituent of activated clay. However, FTIR spectroscopy shows that alginate has mannuronic acid residue characteristics. Several batch experiments were carried out to evaluate the effect of the alginate: clay ratio and pH solution on the percentage of methylene blue removal. 
Determination of Albumin Level of Patin Fish from Kahayan River, Central Kalimantan by Biuret Method Yuliana, Yuliana; Pramudita, Dimas; Simbolon, Wenika; Imelya, Marsya
ALKIMIA Vol 7 No 1 (2023): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/4fsmww40

Abstract

Albumin plays important roles in the health of the body, such as stabilizing intravascular fluid pressure, facilitating molecular transport, and facilitating fluid movement in the body. The high cost of albumin, the limited availability of albumin sources, and the uncertainty surrounding its halal status underscore the imperative for this research. The objective of this study was to identify alternative sources of albumin, with a focus on exploring non-fish sources. Patin fish, a species endemic to Central Kalimantan, is a promising alternative due to its abundance and cost-effectiveness. The albumin content of steamed and dipped patin fish at 10, 15, 20, and 25 minutes was determined using the biuret method. The findings indicated that steaming yielded higher albumin content than dipping, with values of 4.41% and 3.88%, respectively. The optimal steaming duration was determined to be 15 minutes, while the optimal dipping duration was 20 minutes. These findings suggest that steaming may serve as a viable alternative source of fish albumin, offering a more economical option than snakehead fish.
Analysis of Oil and Fat Content in Palm Oil Industry Wastewater Gravimetric Analysis Amelia, Dian; Wijayanti, Fitria; Legasari, Leni
ALKIMIA Vol 7 No 1 (2023): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/tp0kr296

Abstract

Wastewater is unused waste water and contains many substances that can pollute the environment and disturb the health of living things. One of the parameters of wastewater pollution that is found in everyday life is oil and fat. Oil and fat are one of the parameters in wastewater consisting of compounds that can pollute water bodies so that their concentration must be limited, because their impact can damage aquatic ecosystems, especially on water resources. Oil and fat are compounds that contain the main component, triglycerides. Triglycerides are molecules resulting from condensation between one glycerol and three fatty acids. Based on SNI 6989.10: 2011 from the Regulation of the Minister of Environment No.05 of 2014, states that the maximum concentration of oil and fat quality standards contained in wastewater from the palm oil industry is 25 mg/L. The results of the analysis that has been carried out show that the levels of oil and fat in the palm oil industry wastewater samples include In-let wastewater (12,4 mg/L), Out-let (8,4 mg/L), Up-stream (3,6 mg/L) and Down-stream   (6 mg/L) which have been tested and analyzed using the gravimetric method

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