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All Journal Jurnal Riset Kimia PROSIDING SEMINAR KIMIA Lantanida Journal Al-Kimia Walisongo Journal of Chemistry JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Bencoolen Journal of Pharmacy
Sitti Chadijah
UIN Alauddin Makassar
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Health Professions Immunology & microbiology Medicine & Pharmacology Nursing Public Health

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PENENTUAN SUHU DAN WAKTU OPTIMUM PENYEDUHAN BATANG TEH HIJAU (Camelia Sinensis L.) TERHADAP KANDUNGAN ANTIOKSIDAN KAFEIN, TANIN DAN KATEKIN Nurul Mutmainnah; Sitti Chadijah; Muhammad Qaddafi
Lantanida Journal Vol 6, No 1 (2018)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (488.76 KB) | DOI: 10.22373/lj.v6i1.1984

Abstract

Tea is one of kind drink that most be preferred and consumed the tea community around the world, even most common of the community utilized tea as a healthy drink because it contains antioxidants. Antioxidants can protect cells from damage that caused by the unstable molecules. The determination of tea temperature and optimum time were aimed to know how the influence of the caffeine content of antioxidants, tannin and chatecine. In a flood expected to contain low caffeine levels with high polyphenols.The method in this research was an extraction method that analyzed by using UV-Vis a spectrophotometer. The results showed that the lowest caffeine level was at a temperature 70°C for 15 minutes of 0.51 %, the highest levels of tannin was at the brewing temperature 70°C for 5 minutes of 4.783 %, the highest cetacean levels were at the brewing temperature 85°C for 5 minutes of 1.14 %. So that, the optimum condition was obtained at the brewing temperature70°C for 5 minutes, which have antioxidant activity about 56.75%.
Hidroksiapatit dari Tulang Ikan Tuna Sirip Kuning (Tunnus albacores) dengan Metode Presipitasi Mutmainnah Mutmainnah; Sitti Chadijah; Wa Ode Rustiah
Al-Kimia Vol 5 No 2 (2017): December
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.v5i2.3422

Abstract

Indonesia as one of the biggest tuna fish produsers in the world, produce tuna fish bones large enough. Since tuna fish bone contain high calcium it is potentially to be the raw material of hydroxyapatite. Hydroxyapatite are inorganic compounds constituent of bones and teeth has the moleculer formula Ca5(PO4)3OH. Synthesis of hydroxyapatite can be done with precipitation method through tuna fish bone calcination process at the temperature 900°C for 5 hours to obtain calcium compounds in the form of calcium oxide. Calcium wich has been obtained added phosphoric acid 0,6 M with flow rate/rapid 1 mL/minute. Controlled synthesis process parameters are pH 10 of solution. Yield of hydroxyapatite generated after synthesis with of the precipitation time 12 hours are of 91.15%. hydroxyapatite product obtained was analyzed by FTIR(Fourier Transform Infrared) and XRD (X-Ray Diffraction). FTIR analysis indicate the presence of OH groups, PO4 and CO3. Based on the resulting diffraction of XRD analysis, crystallite size obtained each of 211.29 nm structure is hexagonal. Scherrer method was used to obtain crystallite size.
THE INFLUENCE OF HYDROCHLORIC ACID (HCl) ACTIVATOR CONCENTRATION TO ADSORPTION CAPACITY OF CHARCOAL ACTIVE OF DURIAN’S PEEL (DURIO ZIBETHINUS) TO SUBSTANCE COLOUR OF METHANIL YELLOW Sitti Chadijah; Supiati -
PROSIDING SEMINAR KIMIA PROCEEDING OF INTERNATIONAL CONFERENCE 2015
Publisher : PROSIDING SEMINAR KIMIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Durian’s peel is a waste which usually burned, stacked or disintegrated and can make pollution to the environment. This condition motivates the researcher to produce the value-added product from the durian’s peel, such as activated carbon and as well as it can solve the environmental problems. This research aims to know the influence to use variation of concentration of activator HClwhice produces the optimum adsorption capacity from charcoal active of durian’s peel to the substance color of methanil yellow. Active carbon which is used in this research comes from durian’s peel which granular types with standard -100+40 mesh. Carbon is activated by physics in furnace with 400°C heat during 2 hours and is activated by chemistry with submerged of HCI 1M, 2M, 3M, 4M and 5M during 24 hours. The result of this research shows that optimum concentration in HCI 1M with adsorption capacity from charcoal active of durian’s peel is as large as 0,5350 mg/g. Whereas knowing the influence of activator is used tabulation method by statistically, where we can get FHitung 0,004 is smaller from FTabel 10,127. It explains that H0 is accepted to reject H1. Therefore, it can conclude that there is not significant influence to use variation of concentration of activator HCl to adsorption capacity of charcoal active from durian’s peel in substance methanil yellow.
Synthesis of Bioplastics on Rice Straw Cellulose Using Orange Peel Extract, Chitosan, and Sorbitol Sitti Chadijah; Harianti Harianti; Amalyah Febryanti; Alfiah Alif; Maulidiyah Maulidiyah; Akrajas Ali Umar
Walisongo Journal of Chemistry Vol 5, No 2 (2022): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v5i2.10090

Abstract

With the use of several plasticizers (orange peel extract, chitosan, and sorbitol), rice straw cellulose has been used to synthesize and characterize bioplastics. This study aims to synthesize and characterize bioplastics from rice straw cellulose with various additions of plasticizers, namely orange-peel extract, chitosan, and sorbitol, each with a certain concentration so that quality improvement can occur. The methods used in this study include testing the tensile strength value, testing the percentage elongation, and testing the percentage of biodegradation. In addition, functional group characterization tests were also carried out using FTIR. The results obtained in this study were the best values for tensile strength and percentage elongation in treatment A, namely 10.2611 MPa and 13.88%. The percentage of biodegradation for 7 days reached 50.58%. Functional group absorptions were found in various plasticizers, namely C-H, O-H, C-O, C-N, and C=C. Based on existing data, bioplastics synthesized using rice straw cellulose in various plasticizers meet JIS (Japan Industrial Standards).
Optimalisasi Suhu dan Waktu Penyeduhan Daun Teh Hijau (Camellia sinensis L.) P+3 terhadap Kandungan Antioksidan Kafein, Katekin dan Tanin Sitti Chadijah
BENCOOLEN JOURNAL OF PHARMACY Vol. 1 No. 1 (2021): April
Publisher : UNIB PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/bjp.v1i1.15596

Abstract

Metabolit sekunder seperti kafein, katekin dan tanin yang terdapat dalam daun teh berfungsi sebagai antioksidan yang mampu mencegah penyakit kardiovaskuler dengan menghambat pertumbuhan radikal bebas. Aktivitas metabolit sekunder terhadap radikal bebas dipengaruhi oleh proses pengolahan daun teh. Suhu dan waktu penyeduhan mempengaruhi hasil ekstraksi metabolit sekunder. Penelitian ini bertujuan untuk menentukan suhu dan waktu optimum penyeduhan daun teh untuk terhadap kadar antioksidan kafein, katekin dan tanin. Suhu yang digunakan yaitu 70oC, 85oC, dan 100oC dan waktu penyeduhan 5, 10 dan 15 menit. Hasil penelitian diperoleh ekstrak kafein, tanin dan katekin daun teh pada suhu 70oC selama 10 menit diperoleh kadar yang tinggi yaitu 0,8835%, 3,9890% dan 1,1845%. Aktivitas antioksidan menggunakan spektrofotometer UV-Vis diperoleh 42, 0452%.
SINTESIS BIOSURFAKTAN EKSTRAK DAUN PURING (Codiaeum variegatum) DAN KULIT JERUK PURUT (Citrus hystrix) SEBAGAI DETERGEN BIODEGRADABLE Sitti Chadijah; Sarah Nurmayanti; Rahmiani Gani; Ummi Zahra; Iin Novianty
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 7 No. 2 (2025): Literasi Artikel Penelitian Kimia
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v7i2.6062

Abstract

Croton leaf (Codiaeum variegatum) and kaffir lime peel (Citrus hystrix) are plants that contain secondary metabolite compounds such as saponins and tannins. This research aims to utilize natural ingredients to biodegradable detergent synthesis and determine the quality of the biosurfactant product produced. The detergent composition was made using 5 variations of extract concentration, namely 15%, 30%, 45%, 50% and 55%. Analysis of the quality of detergent products includes organoleptic tests, pH tests, density tests, viscosity tests, foam height and foam stability tests as well as saponin and tannin levels contained therein before and after making the detergent. The detergent quality results obtained met SNI standards, namely pH 5-10, density 1.3 g/cm3, viscosity ranging from 3-20 cP, foam height 3-13 cm and foam stability 66.6% - 92.5%. Total saponin levels increased after making detergent and tannin levels decreased after making detergent. These results proved that croton leaf and kaffir lime peel can be used as raw materials for biodegradable detergent.
The Novel of Chitosan-Hydroxyapatite of Chicken Eggshells Composite as Methylene Blue Adsorbent Nur Arthika Putri; Kurnia Ramadani; Sitti Chadijah; Firnanelty Rasyid
Jurnal Riset Kimia Vol. 17 No. 1 (2026): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v17i1.819

Abstract

High egg consumption in Indonesia, particularly in South Sulawesi, presents a significant opportunity to utilize eggshells as precursors for hydroxyapatite. This study aims to characterize hydroxyapatite derived from chicken eggshells and to evaluate the absorption properties of chitosan-hydroxyapatite composites for methylene blue removal. The precipitation method was used for hydroxyapatite synthesis, as it produces hydroxyapatite with a high level of purity and low contamination. X-ray diffraction (XRD) analysis revealed that eggshells contain approximately 30% CaCO₃. The XRD diffractogram of hydroxyapatite from eggshells showed a peak at 2θ = 31.94º. Fourier-transform infrared (FTIR) spectroscopy identified key functional groups in hydroxyapatite, including hydroxyl (-OH) at 3434 cm⁻¹, carbonate (-CO₃²⁻) at 1421 cm⁻¹, phosphate bending (-PO₄³⁻) at 565 cm⁻¹, and phosphate stretching (-PO₄³⁻) at 1035 cm⁻¹. The chitosan-hydroxyapatite (Cs-HAp) composite showed the incorporation of chitosan functional groups, including amine (-NH) at 1577 cm⁻¹ and methylene (-CH) at 2928 cm⁻¹. The chitosan-hydroxyapatite composite demonstrated effective removal of methylene blue dye, with an absorption efficiency of 96% at a Cs-HAp ratio of 2:2 within 180 minutes. Based on the high adsorption efficiency, the chitosan-hydroxyapatite composite shows great potential for absorbing methylene blue.
Characterization of Chicken Eggshell-Derived Hydroxyapatite/Zeolite Composite as a Methylene Blue Absorbent Nur Safitriani; Kurnia Ramadani; Sitti Chadijah; Syarifah Rabiatul Adawiah; Titik Andriani; Firnanelty Firnanelty
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 10, No 1 (2025): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v10i1.99042

Abstract

Purebred chicken eggshell is a promising natural source because it contains high calcium carbonate (CaCO3), which is used as a hydroxyapatite (HAp) precursor, with natural abundance and biodegradability, making it an eco-friendly alternative to synthetic materials. HAp is relevant for dye removal because of its high adsorption capacity, chemical stability, and ability to interact with dye molecules through ion exchange and surface interactions with the material. The composite adsorbent of Hap-zeolite is effective for wastewater treatment based on the result of HAp-zeolite composite's adsorption capacity against methylene blue. Methylene blue is one of the dyeing wastes originating from the textile industry. The method of synthesis of Hap used precipitation. The FTIR characterization results showed OH groups at wavenumber 3434 cm-1, CO32- group with wavenumber 1421 cm-1, PO43- bending group with wavenumber 565 cm-1, and PO43- stretching at wavenumber 1035 cm-1. The highest peak XRD yield at an angle of 2θ=34.04º corresponds to a hexagonal crystal formed. The adsorption process is carried out with a HAp-zeolite mass ratio of 4:2 (w/w), with contact times for 180 minutes, resulting in the best adsorption efficiency around 99.99% measured via UV-Vis spectrophotometry. The results indicate that HAp-zeolite composites are highly effective for methylene blue removal and have potential application in wastewater treatment.
Co-Authors Akrajas Ali Umar Alif, Alfiah Amalyah Febryanti Firnanelty Firnanelty Firnanelty Rasyid Harianti Harianti Iin Novianty Kurnia Ramadani Kurnia Ramadani Maulidiyah Maulidiyah Muhammad Qaddafi Nur Arthika Putri Nur Safitriani Nurul Mutmainnah Rahmiani Gani Rustiah, Wa Ode Sarah Nurmayanti Supiati - Syarifah Rabiatul Adawiah Titik Andriani Ummi Zahra, Ummi