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All Journal KOVALEN: Jurnal Riset Kimia Indonesia Chimica Acta Jurnal Riset Sains dan Kimia Terapan Jurnal Pengabdian UNDIKMA Jurnal Akademika Kimia Jurnal Akademika Kimia

Khairuddin Khairuddin

Analytical Chemistry, Chemistry Department, Tadulako University

Author-ID : 3079999

Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Nursing Public Health Social Sciences Other

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APLIKASI SELULOSA BAKTERIAL-DIETILENTRIAMINA SEBAGAI LAPISAN PENGIKAT LOGAM Pb DAN Cd PADA METODE DIFFUSIVE GRADIENT IN THIN FILMS (DGT) Khairuddin Khairuddin; Prismawiryanti Prismawiryanti; Indriani Indriani
KOVALEN: Jurnal Riset Kimia Vol. 3 No. 1 (2017): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (698.881 KB)

This research aimed to synthesis and apply of bacterial cellulose-diethylenetriamine as a binding layer on the diffusive gradients in thin films method for preconcentration of labile metal Pb and Cd in aquatic systems and sediment of Palu Bay. The results are expected to be used for the analysis of environmental contaminants aquatic pollutant/sediment replace conventional methods. DGT method easily carried into the field and sensitive to identify certain metal ions. The results showed concentration of heavy metals dissolved in seawater for Pb between 0.024 to 0.048 mg / L, while for Cd between 0.006 to 0.015 mg / L. The concentration of Pb in sediments from 7.426 to 16.043 mg / L and Cd 0.387 to 0.950 mg / L. Partial regression analysis between Pb and Cd concentrations in water with a concentration of cadmium metals Pb and Cd in the sediments showed that the concentration of heavy metals in water has a positive correlation with the concentration of Pb and Cd in the sediment.Keyword: Pb, Cd, DGT, bacterial cellulose-diethylenetriamine, Palu Bay

KAJIAN EKSTRAK ETANOL MAHKOTA BUNGA KETEPENG CINA (Cassia alata L) SEBAGAI BIOINDIKATOR ASAM BASA Khairunnisa Khairunnisa; Khairuddin Khairuddin; Dwi Juli Puspitasari
KOVALEN: Jurnal Riset Kimia Vol. 3 No. 3 (2017): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.761 KB)

The acid-base bioindicator is an alternative substitute for the synthetic indicator. The study about ethanol extract of Ketepeng Cina crown flowers as an acid-base bioindicator source has been done. The research about utilization of ethanol extract of Ketepeng Cina crown flower was aimed to study compound group, pH range and acid-base titration which is suitable as bioindicator. This research was performed with gradual extraction by maceration method with three solvents. The results showed that ethanol extract from Ketepeng Cina crown flowers contained flavonoid, polyphenol, alkaloid, and tannin. Extract of Ketepeng Cina crown flower was yellow in acid and orange in the base with the pH range of 7-9.Keywords: Ketepeng Cina, Bioindicator, Acid-Base, Titration.

KAJIAN KEMAMPUAN AKAR TANAMAN KANGKUNG DARAT (Ipomoea reptans Poir) DALAM MENYERAP LOGAM MERKURI PADA TANAH TERCEMAR Khairuddin Khairuddin; Rismawaty Sikanna; Sabaruddin Sabaruddin
KOVALEN: Jurnal Riset Kimia Vol. 3 No. 3 (2017): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (315.516 KB)

The Research has done on assessment ability plants of kale land root’s (Ipomoea reptans Poir) in absorbing metallic of mercury (Hg) on polluted soil. Methods of assessment done by complete randomized design (CRD) to determine the influence of plant age and concentration of the planting medium to large concentrations absorbed of mercury in plant roots. Age of planting consists of 4 harvest time, it is 2, 3, 4, and 5 weeks. The concentration of the cultivation medium is 25 ppm, 50 ppm, 75 ppm dan 100 ppm. The results of analysis variance test for the effect of cultivation age indicate the real difference (F calculation > F 5 %), where the test results of BNT 0,05 obtained in the third week is the maximum age of planting. The influence of concentration on analysis variance test and LSD analysis indicate the real difference, where F calculation > F 1%.Keywords: Absorption, Metal Mercury, Land Plants kale, Age of planting, growing media concentration.

ANALISIS KANDUNGAN PROTEIN TERLARUT DAN KAROTENOID NASI JAGUNG (Zea mays var. indentata) YANG DIFERMENTASI DENGAN KAPANG ONCOM MERAH (Neurospora sp.) Dwi Nurfahriani; Nurhaeni Nurhaeni; Khairuddin Khairuddin
KOVALEN: Jurnal Riset Kimia Vol. 4 No. 2 (2018): Edisi Agustus
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Analisis kandungan protein terlarut dan karotenoid nasi jagung (zea mays var. indentata) yang difermentasi oleh kapang oncom merah (neurospora sp.). Penelitian ini bertujuan untuk mengetahui konsentrasi inokulum kapang oncom merah dan waktu fermentasi yang dapat menghasilkan nasi jagung dengan kadar protein terlarut dan karotenoid tertinggi. Penelitian menggunakan rancangan acak lengkap pola faktorial yang terdiri atas dua faktor yaitu : faktor a (konsentrasi inokulum kapang oncom merah) terdiri atas 3 taraf meliputi : 1%; 1,5% dan 2%. Faktor b (waktu inkubasi) terdiri atas 3 taraf : waktu fermentasi 36 jam; 48 jam dan 60 jam. Hasil analisis diperoleh perlakuan yang terbaik adalah konsentrasi 2% dan waktu fermentasi 48 jam dengan kadar protein terlarut 22,4% dan kadar karotenoid 0,38 mg. Analisis statistic sidik ragam menunjukkan bahwa tidak terdapat korelasi antara konsentrasi inokulum dan waktu fermentasi terhadap kadar protein terlarut dan kadar karotenoid. Kata kunci: nasi jagung, kapang oncom merah, protein terlarut, karotenoid.

KEMAMPUAN ADSORBSI ABU SEKAM PADI TERHADAP AIR DAN ASAM LEMAK BEBAS VIRGIN COCONUT OIL (VCO) DALAM KOLOM ADSORBSI Laras mariance sulo; Khairuddin; Ruslan
KOVALEN: Jurnal Riset Kimia Vol. 5 No. 2 (2019): Edisi Agustus
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

A research has been conducted on the adsorption ability of rice husk ash to water content and free fatty acid of virgin coconut oil (VCO) in the adsorption column. The objective of this research is to get the ratio of coarse VCO to rice husk ash adsorbent in the column that produces VCO with water content, free fatty acid that meets SNI and yields VCO yield not less than 80%. This study used a completely randomized factorial design (CRF design) with the effect of the amount of rice husk ash adsorbent (5g, 10g, 15g, 20g, 25g) in in columns 2.5 and 3 inches. The result of research on column 2.5 inch of the lowest water content (0.2%) was found on the weight of rice husk ash 25g and free fatty acid content on 25g ash husk ash was 0.1%. And at column 3.0 inch the lowest water content was found on 25g ash husk ash 0.1%, and the lowest free fatty acid content on ash weight of rice husk 25g was 0.2% and the best yield was 90%. Keywords: free fatty acid, rice husk ash adsorbent, moisture content, Virgin Coconut Oil

APLIKASI TEKNIK DIFFUSIVE GRADIENT IN THIN FILM PADA PENENTUAN KONSENTRASI LOGAM BERAT MERKURI (Hg) Khairuddin Khairuddin; Ruslan Ruslan
KOVALEN: Jurnal Riset Kimia Vol. 4 No. 1 (2018): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Konsentrasi logam Hg yang tinggi di lingkungan akuatik dapat menyebabkan meningkatnya toksisitas dalam ekosistem air. Oleh karena itu, penentuan distribusi konsentrasi logam berat merkuri (Hg) perlu dilakukan. Salah satu metode efektif yang saat ini digunakan dalam penentuan Hg di lingkungan akuatik adalah menggunakan teknik Diffusive Gradient in Thin Films (DGT). Tujuan penelitian ini adalah membuat dan mengaplikasikan teknik Diffusive Gradient in Thin Film pada kajian logam labil merkuri (Hg) dari lingkungan perairan. Teknik ini merupakan metode passive sampling yang dapat mengakumulasi spesi labil merkuri (Hg) yang berada di lingkungan akuatik. Perangkat DGT terdiri dari bahan plastik berbentuk bulat dengan diameter 2,5 cm yang dapat diisi dengan gel lapisan pengkelat logam, gel poliakrilamida sebagai gel lapisan difusi, serta membran filter 0,45 µm. Hasil penelitian menunjukkan peningkatan jumlah massa logam merkuri yang terikat pada gel lapisan pengikat logam Hg pada variasi waktu kontak. Sementara hasil pengujian dengan variasi ketebalan gel lapisan difusi tidak menghasilkan perbedaan yang signifikan terhadap pengukuran massa Hg yang terikat pada binding gel Aplikasi metode DGT pada penetapan konsentrasi logam merkuri dalam perairan Teluk Palu terukur pada kisaran 3,502 - 3,507 µg/L.Kata Kunci: Merkuri, DGT, Chelex-100, Gel Difusi Poliakrilamida.

PENGARUH PENAMBAHAN EKSTRAK ETANOL SABUT KELAPA MUDA (Cocos nucifera Linn) DALAM SARI JAGUNG MANIS (Zea mays var. saccharata) TERHADAP BAKTERI Staphylococus aureus DAN Shigella dysenteriae Askhiatul Fitriah; Khairuddin Khairuddin; Dwi Juli Puspitasari
KOVALEN: Jurnal Riset Kimia Vol. 4 No. 3 (2018): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Telah dilakukan penelitian tentang pengaruh penambahan ekstrak etanol sabut kelapa muda (cocos nucifera Linn) dalam sari jagung manis (Zea mays var. saccharata) terhadap Staphylococcus aureus (gram positif) dan Shigella dysenteriae (gram negatif). Tujuan penelitian yaitu untuk mengetahui pengaruh penambahan konsentrasi ekstrak etanol sabut kelapa muda terhadap pertumbuhan koloni bakteri pada sari jagung manis, serta total pertumbuhan koloni bakteri terendah pada ekstrak etanol sabut kelapa muda dalam sari jagung manis. Metode maserasi digunakan dalam proses ekstraksi sabut kelapa muda dengan pelarut etanol, selanjutnya ekstrak sabut kelapa muda dicampurkan dengan sari jagung manis sesuai variasi konsentrasi 1%, 2%, 3%, 4% dan 5%. Analisis total pertumbuhan bakteri ekstrak etanol sabut kelapa muda dalam sari jagung manis dilakukan dengan metode TPC. Hasil penelitian menunjukkan bahwa total pertumbuhan koloni bakteri terendah yaitu pada konsentrasi 5% untuk bakteri Shigella dysenteriae sebesar 1,0x107 CFU/mL dan Staphylococus aureus sebesar 1,6x107CFU/mL.Kata kunci: Zea mays var. saccharata, Cocos nucifera Linn, antibakteri, total koloni

PERBANDINGAN KADAR MINERAL MAKRO DAN MIKRO PADA BERBAGAI JENIS UBI BANGGAI (Dioscorea sp.) Krisma Meylin Lasampa; Khairuddin Khairuddin; Prismawiryanti Prismawiryanti; Husain Sosidi
KOVALEN: Jurnal Riset Kimia Vol. 5 No. 1 (2019): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Penelitian tentang kandungan mineral makro kalium, natrium, magnesium dan mineral mikro seng yang terkandung dalam Ubi Banggai (Dioscorea sp) berwarna ungu, kuning dan putih telah dilakukan. Tujuan dari penelitian ini adalah untuk mengetahui perbandingan mineral makro dan mikro dari berbagai jenis ubi banggai (Dioscorea sp) berwarna ungu kuning dan putih. Hasil penelitian menunjukan kadar mineral yang terkandung dalam ubi banggai berwarna ungu rata-rata lebih tinggi daripada ubi banggai berwarna kuning dan putih. Kadar mineral kalium dalam ubi banggai berwarna ungu, kuning dan putih masing-masing sebesar 102,725 ppm; 57,65 ppm; 24,525 ppm, mineral natrium masing-masing sebesar 27,65 ppm; 11,575 ppm; 9,8 ppm, mineral magnesium masing-masing sebesar 11,13 ppm; 11,15 ppm; 11,03 ppm dan mineral seng masing-masing sebesar 21,95 ppm; 15,89 ppm; 15,51 ppm.Kata Kunci : Ubi banggai, kalium, natrium, magnesium, seng

PEMANFAATAN KARBON AKTIF AMPAS TAHU TERAKTIVASI NaCl SEBAGAI PENYERAP ZAT WARNA CONGO RED Sutomo Eka Putra; Khairuddin Khairuddin; Dwi Juli Puspitasari; Husain Sosidi
KOVALEN: Jurnal Riset Kimia Vol. 5 No. 1 (2019): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Telah dilakukan penelitian mengenai pemanfaatan karbon aktif ampas tahu teraktivasi NaCl sebagai penyerap zat warna Congo Red. Penelitian ini bertujuan untuk mengetahui kemampuan karbon aktif ampas tahu teraktivasi NaCl dalam menyerap zat warna Congo Red . Penelitian ini menggunakan rancangan acak lengkap dengan tiga variabel bebas yaitu konsentrasi aktivator, waktu kontak dan pH sedangkan variabel terikat yaitu persentase Congo Red yang terjerap. Hasil penelitian menunjukkan penyerapan terbaik diperoleh pada karbon aktif ampas tahu teraktivasi NaCl 3M dengan waktu kontak optimum selama 60 menit pada kondisi pH 2. Dari penelitian ini diketahui bahwa limbah ampas tahu dapat dimanfaatkan menjadi karbon aktif.Kata kunci: Karbon Aktif, Ampas Tahu, Zat Warna Congo Red, Adsorpsi

Studi Perbandingan Aktivitas Antioksidan Xantofil dan Karoten Kapang Oncm Merah pada Berbagai Waktu Inkubasi: Comparison Study of Antioxidant Activity of Xanthophyll and Carotene from Red Oncom Mold In Various Incubation Times Sriwulan Indriani Pea; Khairuddin; Prismawiryanti
KOVALEN: Jurnal Riset Kimia Vol. 6 No. 2 (2020): Edisi Agustus
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2020.v6.i2.11547

Research on a comparative study of antioxidant activity of xanthophyll and carotenoids from red oncom, mold in various incubation times has been studied. This study aims to determine the antioxidant activity of xanthophyll and carotene at various incubation times of red oncom cultured in corn cob medium. This study used a Completely Randomized Design (CRD) at variations in incubation time: 2, 3, 4, 5, 6, and 7 days. The results showed that the best antioxidant activity of xanthophyll and carotene was on the second day with antioxidant activity of 82.27% and 65.80%, respectively. Keywords: antioxidant activity, xanthophyll, carotene, carotenoids, red oncom

Co-Authors Abustiana, Rahma Lolita Ahmad Fauzan Ahmad Ridhay Ahmil Aini Auliana Amar Andi Tenri Ajeng Askhiatul Fitriah Betzy Eppang Dwi Juli Puspitasari Dwi Nurfahriani Dwiyana, Putri Eka Lindawati Erwin Abdul Rahim Frischa Sari Kencana Husain Sosidi Indriani Indriani Indriani Indriani Jaya Hardi Joy Noldy Baciang Jusman Jusman, Jusman Khairunnisa Khairunnisa Krisma Meylin Lasampa Laras mariance sulo Mirzan, Muhamad Moh. Mirzan Moh. Mirzan Muh.Ricky Arisandi M. Tahili Muqasyifah Ni Ketut Sumarni Nov Irmawati Inda Nurakhirawati Nurhaeni Nurhaeni Nurhaeni Nurhaeni Nurhayati Nurhayati Prismawiryanti Prismawiryanti Ramli, Aksar Ruslan Ruslan Ruslan Ruslan Ruslan Ruslan Ruslan Sabaruddin Sabaruddin Sitti Nur Halizah Sriwulan Indriani Pea Sulfitri Suardi Sutomo Eka Putra Syaiful Bahri Syamsuddin Syamsuddin Tri Handayani Ulayya Kasio Wiranto Wengkau

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