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SYNTHESIS AND CHARACTERIZATION OF ALGINATE-CARBOXYMETHIL CELLULOSE BEADS FROM CORN STALK (Zea mays) WITH CROSSLINK VARIATION C4H6O4Zn Latifah, Annazmil Fayros; Yulianti, Eny; Khoiroh, Lilik Miftahul
Journal of Islamic Pharmacy Vol 4, No 1 (2019): J. Islamic Pharm.
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jip.v4i1.7936

Corn stalk has a high cellulose content, so that it is potential to be used as a composition for making alginate-carboxymethyl cellulose beads. Alginate and cellulose are biodegradable, renewable and non-meltable polymers that have wide applications in various industrial sectors. The purpose of this study was to determine the effect of crosslinking agent C4H6O4Zn on the adsorption and shape of beads. The varied concentrations of C4H6O4Zn are 3%; 5% and 10%. Characterization of alginate-carboxymethyl cellulose beads composites using Fourier Transform InfraRed (FTIR), and Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX). Based on research, the highest swelling value is obtained at 5% C4H6O4Zn crosslink which is 59.68%. FTIR data shows the appearance of wave numbers at 1413 cm-1 which indicates the presence of C-O Na groups, while at wave number 458 cm-1 indicates the presence of Zn-O groups. SEM-EDX data with a 5% C4H6O4Zn crosslink has a round shape with a wrinkled surface, multiple grooves causing a non-homogeneous surface. Whereas in C4H6O4Zn 10% the surface is almost smooth

Sintesis Pigmen Geothit (Î±-FeOOH) dari Limbah Industri Kerajinan Besi dengan Metode Presipitasi Nisa, Choirun; Aini, Nur; Khoiroh, Lilik Miftahul
ALCHEMY Vol 7, No 2 (2019): ALCHEMY: Journal of Chemistry
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Iron handicraft is one of industries that process iron ore into handicraft products and produce lathe waste. Iron lathe contains 96.08% iron metal which is potential source as a precursor for synthesis of goethite pigment. The method used for synthesis was precipitation using NaHCO3 as precipitator agent. Synthesis was conducted at 70Â°C with variations of stirring speed such as 550, 650, 750 and 850 rpm. The products were characterized by color reader, ultraviolet-visible (UV-Vis) spectroscopy, XRD and SEM-EDX. The data from color reader showed that the highest yellowness degree and lightness obtained at a stirring speed 550 rpm were 24.1 and 42.1, respectively. UV-Vis data showed that the maximum wavelength of goethite pigment was 600-624 nm. Based on XRD data, synthesized pigment was in goethite phase (Î±-FeOOH) for all samples with crystallite size 63.24 nm and the highest crystallinity was achieved at 550 rpm. SEM-EDX data showed that morphology pigment (Î±-FeOOH) was not uniform, there were impurities such as Na and C.Â Keywords: Lathe waste, precipitation, goethite, pigmentÂ Â Industri kerajinan besi merupakan salah satu industri yang mengolah bijih besi menjadi produk kerajinan dan menghasilkan limbah bubut besi. Limbah bubut besi mengandung unsur besi sebesar 96,08% yang berpotensi sebagai bahan baku (prekursor) untuk sintesis pigmen geothit. Metode yang digunakan adalah metode presipitasi dengan agen pengendap NaHCO3. Sintesis dilakukan pada suhu 70Â°C dengan variasi kecepatan pengadukan 550, 650, 750 dan 850 rpm. Produk hasil sintesis dikarakterisasi dengan color reader, spektroskopi ultraviolet-tampak (UV-Vis), XRD, dan SEM-EDX. Data color reader menunjukkan bahwa derajat kekuningan dan derajat kecerahan tertinggi didapatkan pada kecepatan pengadukan 550 rpm yaitu berturut-turut 24,1 dan 42,1. Data UV-Vis menunjukkan panjang gelombang maksimum pigmen geothit hasil sintesis adalah 600-624 nm. Hasil karakterisasi XRD menunjukkan bahwa pigmen hasil sintesis pada semua kecepatan pengadukan berfasa geothit (Î±-FeOOH) dengan derajat kristalinitas tertinggi pada kecepatan pengadukan 550 rpm dengan ukuran kristal 63,24 nm. Hasil SEM-EDX pada kecepatan 550 rpm menunjukkan bahwa morfologi pigmen (Î±-FeOOH) hasil sintesis tidak seragam dan ditemukan adanya pengotor berupa unsur Na dan C.Â Kata kunci: Limbah bubut besi, presipitasi, geothit, pigmen

Synthesis of Hematite Pigments (alpha-Fe2O3) by Thermal Transformations of FeOOH Lilik Miftahul Khoiroh; Diah Mardiana; Akhmad Sabarudin; Bambang Ismuyanto
The Journal of Pure and Applied Chemistry Research Vol 2, No 1 (2013)
Publisher : Chemistry Department, The University of Brawijaya

Synthesis of iron oxide FeOOH from FeCl3, followed by thermal transformation to form red hematite was conducted. The effect of pH and temperature calcinations was studied. The pigment obtained was analyzed by XRD, color reader and scanning electron microscopy (SEM). The structure crystal of pigment at all variation of pH and calcinations temperature were hematite (a-Fe2O3) with good crystallization and relatively pure. The color of pigment obtained at pH variation were red with maximum value of L * a* at pH 6 while the mean grain size with minimum coefficient of variation was at pH 8 with mean grain size was 0.17 mm. The maximum of calcinations temperature was at 800oC for 3 hour. The resulting pigment was shaped like a spheres.

Synthesis And Characterization Of Alginate-Cellulose Xanthate Beads From Corn Stalk With NaCL As Porogen Wahyu Adhi Putra Rohmatullah; Eny Yulianti; Lilik Miftahul Khoiroh; Rif'atul Mahmudah
ANNALES BOGORIENSES Vol 24, No 2 (2020): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/ann.bogor.2020.v24.n2.59-65

In this study, the synthesis of porous beads from corn stalks was carried out. The cellulose extracted from corn stalks was converted into cellulose xanthate and combined with alginate to form porous alginate-cellulose xanthate beads by the ionic gelation method. This study attempted to use sodium chloride (NaCl) as a porogen and zinc acetate as a crosslinker. Beads were characterized to determine the porosity, swelling properties, and functional groups using Fourier Transform Infra-Red (FTIR). The geometry of beads was analyzed by optical microscopy, and its surface morphology was analyzed by Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX). The results showed that corn stalks as agricultural waste material could be used to synthesize porous beads material. The swelling and porosity of beads increased with increasing concentration of NaCl. The presence of porogen has increased beads formation. The results demonstrate the crosslinks between zinc acetate and alginate were successfully characterized using FTIR. NaCl concentration of 9.5% resulted in the highest swelling properties (52.80%) and porosity (81.4%) of the beads.

Synthesis of Goethite (α-FeOOH) Pigment by Precipitation Method from Iron Lathe Waste Lilik Miftahul Khoiroh; Elysia Dwi Nuraini; Nur Aini
ALCHEMY:Journal of Chemistry Vol 6, No 2 (2018): ALCHEMY: Journal of Chemistry
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Lathe waste contains high iron content potential to be further processed into goethite pigment. The purpose of the research was to determine the effect of synthesis temperature on the structure, colour values, and morphology of goethite pigment. The synthesis was conducted with temperature variations of 60, 70, 80and 90°C. The XRD diffraction pattern shows that crystal structure of the product of all synthesis temperatures are goethite (α-Fe-OOH) with orthorhombic structure. The crystal size of the pigment ranges between 11.17 – 12.32 nm. Colour value analysis shows that product of 70°C synthesis temperature exhibits the highest lightness value about 40.5. Based on SEM-EDX imaging, the morphology of the samples is not uniform and forming agglomerates. Traces of impurities were detected, such as C and Na. Keywords: Iron lathe waste, goethite, temperature, precipitation

Briket Arang Tempurung Kawista (Limonia acidissima) Teraktivasi NaOH dengan Perekat Alami Eny Yulianti; Raudatul Jannah; Lilik Miftahul Khoiroh; Vina Nurul Istighfarini
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 6, No 1 (2019): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v6i1.4798

Penelitian tentang pemanfaatan tempurung tempurung kawista (Limonia acidissima) telah dilakukan sebagai bahan dasar pembuatan briket arang. Variabel jenis perekat alami berupa gel yang terbuat dari tepung beras, tepung ketan, dan tepung tapioka. Selanjutnya jenis perekat alami terbaik ditentukan, yang mampu menghasilkan nilai kalor tertinggi dan kualitas briket tempurung kawista sesuai dengan SNI. Metode perlakuan terhadap tempurung kawista meliputi aktivasi NaOH 0,1 M, karbonisasi, pencetakan dan pengepresan. Karakterisasi briket arang dilakukan melalui uji mutu SNI, termasuk penentuan nilai kalor tertinggi, serta identifikasi gugus fungsi sampel kulit, arang kulit, dan briket arang menggunakan spektrofotometer FTIR. Hasil penelitian menunjukkan bahwa perlakuan aktivasi meningkatkan kualitas briket arang. Penggunaan semua jenis perekat dengan perbandingan massa arang : perekat sebesar 9 : 1, menghasilkan briket arang yang memenuhi kualitas SNI. Nilai kalor tertinggi sebesar 6905 kal/g terdapat pada sampel briket arang tempurung kawista teraktivasi dengan jenis perekat alami gel tepung beras. Melalui penentuan mutu briket arang terbaik sesuai standar SNI, diperoleh nilai kadar air 3,733%, kadar zat menguap 8,014%, kadar abu 2,373%, dan kadar C terikat 85,88%. Secara garis besar, keseluruhan gugus fungsi yang teridentifikasi hampir sama yaitu meliputi gugus O–H pada 3500-3400 cm-1, C=C pada 1650-1600 cm-1, C–H pada 1384-1383 cm-1, dan C–OH pada daerah 1047-1034 cm-1. Perbedaan yang nampak adalah briket arang yang teraktivasi memiliki intensitas yang lebih tinggi dibandingkan dengan briket tanpa aktivasi

Edukasi Zat Aditif Makanan Berbahaya dan Analisa Boraks Menggunakan Kunyit Di Tlogomas, Lowokwaru, Malang Khoiroh, Lilik Miftahul; Kartika, Siskaela; Hanapi, Ahmad
Jurnal Surya Vol 6 No 1 (2024): Mei
Publisher : Universitas Muhammadiyah Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37150/jsu.v6i1.3035

Borax is a hazardous chemical that is often used as a food additive, although its use has been banned in many countries, including Indonesia. Consumption of borax can cause cancer, kidney failure, liver disorders, reproductive system disorders, central nervous system disorders, and immune system disorders. Irresponsible manufacturers often add borax to meatballs, noodles, tofu, and crackers to make them chewier and last longer. Turmeric contains curcumin, which functions to break down the borax bond into boric acid and bind it into a reddish-brown rosocyanin chelate complex. The purpose of this community service program is to provide education about hazardous food additives, the characteristics of foods containing borax, the impact of borax consumption on health, and training on how to analyze borax using turmeric in Tlogomas, Lowokwaru, Malang. Education is carried out using lecture methods, discussions, demonstrations, and training on analyzing borax. It has been proven that this activity can increase participants' knowledge and skills in identifying borax in food by up to 92%.

Synthesis of Hematite Pigment (A-Fe2O3) from Iron Lathe Waste using Precipitation-Sonication Method as Anti-Swelling on Wood Rahmawati, Dewi Elok; Khoiroh, Lilik Miftahul; Ningsih, Rachmawati; Yusniyanti, Febi; Solawati, Wariatus; Sari, Puspa
International Journal of Mechanical Engineering Technologies and Applications Vol. 1 No. 2 (2020)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2020.001.02.5

Iron lathe waste powder has the potential as a raw material in the synthesis of hematite pigments. Hematite pigments have many advantages, one of which is anti-swelling properties that can maintain the dimensions of wood. Hematite pigment synthesis was carried out using the precipitation-sonication method. The precipitation stage uses an ammonium hydroxide solution as a precipitating agent. Stages of sonication using the PEG-6000 template were performed at different times were 30, 45, and 90 minutes then calcined at 750 Â° C for 3 hours. The samples were characterized by X-ray diffraction (XRD), color reader, and scanning electron microscope-energy dispersive X-Ray (SEM-EDX). The result confirmed that a ferrihydrite phase obtained after the precipitation process and transform into hematite after the calcination process with the highest degree of crystallinity for 90-minute sonication. From a color reader, the brightness and redness degrees decrease with increasing time. Scanning electron microscope results illustrated that the morphology was not uniform with the particle size getting smaller with increasing sonication time. The EDX results show that hematite pigments still contain impurities such as carbon. The swelling test indicated that the highest stability in hematite-pigmented wood increased as increasing in the weight of pigment.

Peningkatan Kesehatan Masyarakat Melalui Konsumsi Raw Food Daun Kelor Moringa oleivera Di Desa Talangsuko Kecamatan Turen Kabupaten Malang Yulianti, eny; Hakim, Abdul; Khoiroh, Lilik Miftahul; Fasya, Ahmad Ghanaim; Hanapi, Ahmad; Harini, Sri
JRCE (Journal of Research on Community Engagement) Vol 6, No 2 (2025): Journal of Research on Community Engagement
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrce.v6i2.32478

This journal discusses a community service program focused on improving public health through the consumption of Moringa oleivera (Moringa) leaves in raw food form in Talangsuko Village, Turen Subdistrict, Malang Regency. The selection of Moringa leaves is based on their high nutritional content and the underutilization of their health benefits as herbal plants in the local community. The research method employed is Participation Action Research (PAR), emphasizing a participatory and collaborative approach involving existing community groups such as PKK, Nahdatul Ulama organizations including the Fatayat and Muslimat women's communities, and the Ansor youth community. The educational approach includes providing information about the benefits of Moringa leaves, training in proper consumption methods, and collecting health data before and after participation. The community is educated on the proper consumption of Moringa leaves as herbal plants, emphasizing small, uncooked, and regular intake. Food integrated into the activities includes salads or raw vegetables with each meal, as additives in fruit or vegetable juices, and as antioxidant-rich infused water. Visits are conducted bi-weekly for two months, with continued online support through WhatsApp groups. The research findings indicated a significant improvement in public health, manifested by the reduction of complaints such as joint pain, headaches, common colds, susceptibility to flu, tingling sensations, fatigue, digestive issues, and cholesterol.

Edukasi Zat Aditif Makanan Berbahaya dan Analisa Boraks Menggunakan Kunyit Di Tlogomas, Lowokwaru, Malang Khoiroh, Lilik Miftahul; Kartika, Siskaela; Hanapi, Ahmad
Jurnal Surya Vol 6 No 1 (2024): Jurnal Pengabdian Kepada Masyarakat Surya Universitas Muhammadiyah Sukabumi (UMMI
Publisher : Universitas Muhammadiyah Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37150/jsu.v6i1.3035

Borax is a hazardous chemical that is often used as a food additive, although its use has been banned in many countries, including Indonesia. Consumption of borax can cause cancer, kidney failure, liver disorders, reproductive system disorders, central nervous system disorders, and immune system disorders. Irresponsible manufacturers often add borax to meatballs, noodles, tofu, and crackers to make them chewier and last longer. Turmeric contains curcumin, which functions to break down the borax bond into boric acid and bind it into a reddish-brown rosocyanin chelate complex. The purpose of this community service program is to provide education about hazardous food additives, the characteristics of foods containing borax, the impact of borax consumption on health, and training on how to analyze borax using turmeric in Tlogomas, Lowokwaru, Malang. Education is carried out using lecture methods, discussions, demonstrations, and training on analyzing borax. It has been proven that this activity can increase participants' knowledge and skills in identifying borax in food by up to 92%.

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