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Indah Fajarwati, Febi
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology

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Adsorpsi Pb(II) dari Air dengan Karbon Aktif dari Kulit Salak Pondoh: Kinetika dan Isoterm Adsorbsi Anugrahwati, Mai; Indah Fajarwati, Febi; Awalin Safitri, Rika
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 6, ISSUE 1, 2021
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (848.927 KB) | DOI: 10.20885/ijcr.vol6.iss1.art1

Abstract

Dalam penelitian ini kulit salak pondoh disintesis menjadi karbon aktif sebagai adsorben ion Pb2+. Proses perubahan ini melibatkan metode karbonisasi dan aktivasi yang terjangkau menggunakan KOH. Material adsorben yang diperoleh selanjutnya dikarakterisasi dengan FTIR dan digunakan pada kajian kinetika dan isotherm adsorbsi pada larutan yang mengandung Pb2+. Hasil karakterisasi menunjukkan gugus fungsi yang mungkin terlibat dalam adsorpsi seperti O-H. Pada aplikasi adsorpsi, penentuan konsentrasi Pb2+ dianalisis menggunakan Spektrofotometri Serapan Atom (SSA). Kondisi waktu optimum adsorpsi dalam penelitian ini adalah 15 menit dengan kapasitas adsorpsi mencapai 90% dimana  kinetika adsorbsi mengikuti pseudo orde dua sedangkan isotherm  adsorpsinya sesuai dengan persamaan isoterm Langmuir.
Formulasi Kosmetik Lip Balm Tabir Surya Dengan Kombinasi Kitosan dan Ekstrak Kulit Buah Naga Merah (Hylocereus polyrhizus) Salmahaminati; Dyah Nuraini, Herdita; Indah Fajarwati, Febi
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Vol. 10 No. 2 (2025): Volume 10, ISSUE 2, 2025
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol10.iss2.art4

Abstract

This research involved formulating lip balm using a combination of chitosan and red dragon fruit peel as active ingredients in the lip balm formula. The purpose of this research is to learning about lip balm’s physical and chemical properties, which involves adding chitosan and red dragon fruit peel, determining lip balm formulation with various concentrations of red dragon fruit peel, and understanding betalain compounds in red dragon fruit peel as antioxidants using the DPPH (2,2-diphenyl-1-picrylhydrazyl) method. Based on the phytochemical screening and antioxidant test, the extract can be used as an active ingredient in cosmetics, and the antioxidant value IC50 is 0,675 mg/mL. However, this antioxidant's effectiveness is classified as low because of some environmental factors. There are 6 lip balm formulas, which are F0A, F0B, F1, F2, F3, and F4. All of the lip balm formulas have fulfilled the requirements of a lip balm product, like organoleptic test, pH test, hedonic test, and adhesive strength test. The result of the SPF test shows that lip balm formulas F0A, F0B, F1, and F2 are classified as maximum protection. Meanwhile, lip balm formulas F3 and F4 are classified as ultra protection with an SPF value >15
Formulation of Sunscreen Body Lotion with A Combination of Chitosan and White Turmeric (Curcuma zedoaria Rosc.) Aminati, Salmah; Putri Arini, Regita; Dyah Nuraini, Herdita; Indah Fajarwati, Febi
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Vol. 10 No. 2 (2025): Volume 10, ISSUE 2, 2025
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol10.iss2.art5

Abstract

In this study, body lotion was made in four formula variations from white turmeric and chitosan as natural active ingredients. The objectives of this study were determine whether chitosan could be used as a good emulsifier in body lotion, to determine whether white turmeric could be used as a sunscreen in body lotion, and to determine the physical and chemical properties of body lotion resulting from the combination of chitosan and white turmeric. Characterized results of Chitosan using FTIR and obtained functional groups, namely O-H, C-H, C=O, N-H, and C-H with a %DD value 86,47%. White turmeric simplisia was characterized using FTIR and obtained functional groups O-H, C-H, and C=O, indicating the possible presence of chromophore groups in curcumin. A phytochemical screening test result showed that white turmeric contains alkaloids and flavonoids. There were four formulation variations, namely F0, F1, F2, and F3. Physical quality tests were conducted, including organoleptic, homogeneity, pH, stability, hedonic, irritation, and SPF tests. There were two body lotion formulas that met the requirement. In the hedonic test, F0 and F1 were preferred by the respondents. The maximum SPF value of the body lotion preparation in formula F3 was 20,00487, which falls into the ultra protection category.
Co-Authors Aminati, Salmah Awalin Safitri, Rika Dyah Nuraini, Herdita Mai Anugrahwati Putri Arini, Regita Salmahaminati