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All Journal Jurnal Profesi Kependidikan SAINSMAT Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun ACADEMIA: Jurnal Inovasi Riset Akademik Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Indonesian Journal of Fundamental Sciences IPTEK: Jurnal Hasil Pengabdian kepada Masyarakat Seminar Nasional Hasil Penelitian LP2M UNM Jurnal Hasil-Hasil Pengabdian dan Pemberdayaan Masyarakat (JHP2M) Jurnal Abdi Negeriku Mammiri: Jurnal Pengabdian Masyarakat Celebes Science Education SAINSMAT: Jurnal Ilmiah Ilmu Pengetahuan Alam
Hasri Hasri
Universitas Negeri Makassar
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Chitosan Acetate Snail Shell (Achatina Fulica) as Antibacterial In Cotton Fabric Rismawati Rismawati; Hasri Hasri; Sudding Sudding
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 9 No. 1 (2020): Volume 9 Nomor 1 (Maret 2021)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

This study aims to determine the ability of snail shell chitosan as an antibacterial on cotton fabric based on the effect of variations in soaking time on growth activity of Staphylococcus aureus. Preparation of chitosan be done in three phases demineralization, deproteination and deacetylation, then chitosan acetate is prepared by dissolving chitosan in a 2% acetic acid solution. The coating of cotton fabric through soaking using sodium periodate is followed by the coating of chitosan acetate with a variation of the soaking time of 1 minute, 5 minutes and 10 minutes. Antibacterial activity test using the stocking method. The results showed that the longer the soaking time, the bacterial growth decreases. It was concluded that chitosan acetate can inhibit the growth activity of Staphylococcus aureus.
Sintesis Nanokitosan dari Limbah Kulit Udang Windu (Panaeus monodon) Isna Sejati Syam; Hasri Hasri; Suriati Eka Putri
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 11 No. 1 (2022): Volume 11 Nomor 1 (Maret 2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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This study aims to determine the characteristics of nanochitosansynthesized from chitosan from tiger prawn shells (Panaeus monodon) using sonochemical and ionic gelation methods based on variations in chitosan concentration. The characterization of nanochitosan includedthe degree of distillation using FTIR, particle size using PSA, and morphology testing using SEM. The results showed that the chitosan obtained had a degree of deacylation of 81.23%. The average size of the smallest nanochitosan synthesized using the sonochemical method is 54.44 nm with 0.2% chitosan concentration, while that produced using the ionic gelation method is 39.65 nm with 0.05% chitosan concentration, and there is a pore appearance on the surface. nanochitosan surface. Based on these data, it can be concluded that the ionic gelation method produces a smaller average nanochitosan particle size than the sonochemical method.
SINTESIS KOMPOSIT KITIN-SILIKA (KI-SIL) DAN APLIKASINYA SEBAGAI ADSORBEN LOGAM Fe (III) DAN Cr (III) Hasri Hasri; Diana Eka Pratiwi; Muftihatu Rahma; Satria Putra Jaya Negara; Marlina Ummas Genisa; Haryanti Putri Rizal
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 14 No. 01 (2025): Volume 14 Nomor 1 (Maret 2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/45m24r41

Abstract

Rice husk waste can be utilized as a source of silica with a silica content of 86.90-97.30 %, which has potential as a silica-based material. Similarly, chitin sources are abundant in crustacean shells (crabs, shrimps, lobsters etc.), the combination of chitin-silica (Ki-Sil) as a composite is very interesting to study. So this research aims to synthesize Ki-Sil composite and its application as adsorbent of Fe(III) and Cr(III) metal ions. At first, the extraction of rice husk silica was carried out and then the synthesis of Ki-Sil composites. The obtained composite was optimized for pH with pH variation (2-6), adsorption capacity with concentration variation (50-150 ppm) and adsorption selectivity test of both metal ions with ratio (0.25:0.75; 0.75:0.25 and 1:1). Analysis of Ki-Sil functional groups using FTIR shows that the synthesis has been successful with wave numbers that match the standard and morphological analysis using SEM which shows the composite material is a porous material. The results obtained optimum pH 4 for adsorption of both target metals. The adsorption capacity of Fe(III) metal was 31.49 mg/g; 69.69mg/g; 89.83 mg/g and 138.57 mg/g, respectively. And the adsorption capacities of Cr(III) metal were 37.80 mg/g; 70.86 mg/g; 89.98 mg/g and 138.84 mg/g, respectively. The selectivity test results showed that Ki-Sil adsorbed Fe(III) metal by 0.9820 mmol and Cr(III) metal by 0.9949 mmol. It is concluded that the Ki-Sil composite is more selective in adsorbing Cr(III) metal.
Co-Authors Ahmad Yani Andi Eka Kartika Andi Muhammad Ridho SAP Andika Marzuki Auliya Marwah Hijriyah Diana Eka Pratiwi Dwi Hariyanti Fachry Abda El Rahman Fauziah Fauziah Fidaus Fitra Angrayuni Gusma Harfiana Abbas Hariyanti Putri Rizal Haryanti Putri Rizal Isna Sejati Syam Iwan Dini Marlina Ummas Ganisa Marlina Ummas Genisa Muftihatu Rahma Muh Al Rasyid Ridho Muhammad Idris Jafar Muhammad Isbar Pratama Muhammad Syahrir Muharram Muharram Netti Herawati Nur Fadillah Amir Qudratullah Qudratullah Rini Perdana Rismawati Rismawati Rizky Oktariani Rofiul Arif Widodo Ruhmah Ruhmah Ruhmah Ruhmah Sakina Putri Sahara Satria Putra Jaya Negara Sitti Faika Sri Magfirah Sri Wahyuni Mu’mang Sudding Sudding Sukaria, Muhammad Ikhsan Suriati Eka Putri Sutra Safar Syafruddin Side Usman Arief Zubair, Sakinah