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All Journal Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Akta Kimia Indonesia Sains Natural: Journal of Biology and Chemistry PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat PREPOTIF : Jurnal Kesehatan Masyarakat Amalee: Indonesian Journal of Community Research & Engagement Jurnal Sains dan Edukasi Sains IJCR (Indonesian Journal of Chemical Research) Aptekmas : Jurnal Pengabdian Kepada Masyarakat JURNAL PENGABDIAN PENDIDIKAN MASYARAKAT (JPPM)
Gertreda Latumakulita
Universitas Katolik Widya Mandira
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Sintesis dan Karakterisasi Silika Gel Dari Limbah Batu Akik Asal Desa Nian Kabupaten Timor Tengah Utara Menggunakan Metode Sol Gel Landi Pote, Lodowik; Sanam, Putra Reinho Rosario; Latumakulita, Gertreda
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 7, ISSUE 2, 2022
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol7.iss2.art2

Abstract

Penelitian tentang sintesis dan karakterisasi silika gel dari limbah batu akik asal Desa Nian Kabupaten Timor Tengah Utara menggunakan metode sol gel telah dilakukan. Penelitian ini bertujuan untuk mengetahui komposisi kimia, karakteristik silika gel yang disintesis dari limbah batu akik asal Desa Nian Kabupaten Timor Tengah Utara yang dapat digunakan sebagai sumber sintesis silika gel. Metode penelitian yang digunakan adalah metode sol gel. Penelitian ini diawali dengan pencucian serbuk limbah batu akik dengan HCl 2 M untuk menghilangkan unsur-unsur pengotor. Selanjut ekstraksi silika dilakukan dengan mereaksikan dengan NaOH 3 M untuk memperoleh natrium silikat. Natrium silikat yang diperoleh selanjutnya disintesis menjadi silika gel dengan menambahkan HCl 3 M tetes demi tetes sampai pH netral. Silika gel hasil sintesis dianalisis komposisi dengan XRF dan dikarakterisasi dengan XRD dan FTIR.  Hasil penelitian menunjukkan bahwa komposisi kimia serbuk limbah batu akik dengan XRF diperoleh Si 35,6 % dan kandungan terbesar adalah Ca yaitu 54,3 %. Silika gel hasil sintesis memiliki kemurnian adalah SiO2 99,1 % dan Si 97,6 %. Hasil karakterisasi dengan XRD menunjukkan silika gel hasil sintesis berbentuk fasa amorf dan hasil karakterisasi gugus fungsi dengan FTIR menunjukkan adanya gugus fungsi siloksan dan silanol.
Kinetic and Optimization Study of Green Extraction of Bioactives from Anredera Cordifolia Leaves Latumakulita, Gertreda; Lodowik Landi Pote; Anggelinus Nadut; Juliano M.P. Umbu Jima Kadebu; Amandha V.D. Tukan
Amalee: Indonesian Journal of Community Research and Engagement Vol. 6 No. 2 (2025): Amalee: Indonesian Journal of Community Research and Engagement
Publisher : LP2M INSURI Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37680/amalee.v6i2.8119

Abstract

The sustainable extraction of bioactive compounds from medicinal plants supports environmentally responsible practices in the pharmaceutical and nutraceutical industries. This study investigates the extraction behavior of Anredera cordifolia leaves using green solvents, with a focus on process optimization and kinetic modeling. A factorial design was used to evaluate the effects of temperature (25–60°C), solvent type (ethanol, methanol, water), pH (4, 7, 9), and time (10–90 minutes). Total phenolic content (TPC) and antioxidant activity were measured via spectrophotometry. Kinetic analysis revealed that the pseudo-second-order model provided the best fit to the data (R² > 0.98), indicating chemisorption as the dominant mechanism. Response Surface Methodology (RSM) identified optimal conditions at 59°C, 70% ethanol, pH 7, and 65 minutes, yielding 213.2 mg GAE/g DW TPC and 91.8% antioxidant activity. Compared to conventional methods, this approach improved yield by 21% and reduced solvent use by 30%. These results demonstrate the value of combining kinetic modeling with statistical optimization to create efficient, scalable, and low-impact extraction protocols. Importantly, the findings offer practical relevance for advancing Indonesia’s herbal industry and supporting the development of sustainable biotechnology in tropical regions.
Pelatihan PELATIHAN PELAJAR KELAS XII IPA SMA MENELITI MELALUI SAYEMBARA RISET OBAT TRADISIONAL Tukan, Gerardus Diri; Markus Taek, Maximus; Latumakulita, Gertreda; Nadut, Anggelinus; Landi Pote, Lodowik; Dewi Q. M. Bulin, Christiani; Risan Funan Lalong, Paulus
Jurnal Pengabdian Pendidikan Masyarakat (JPPM) Vol 6 No 1 (2025): Jurnal Pengabdian Pendidikan Masyarakat (JPPM), Vol 6 No 1 (Maret 2025)
Publisher : LPPM UNIVERSITAS MUHAMMADIYAH MUARA BUNGO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52060/jppm.v6i1.2392

Abstract

High school students in Indonesia, in today's development, have a final assignment before completing their senior secondary education, namely conducting scientific research, writing up research results and presenting them. General conditions show that female students still have difficulty conducting research which includes research ideas or topics, steps for conducting research and writing research results. In response to this condition, research training was created for class The method used is competition. Female students are invited to conduct research, collect data and analyze data in their respective places of residence during the holiday period. As a result of the activities obtained, as many as 35 female students took part in the competition. It appears that the participants dug up information, conducted interviews with sources, namely parents in the villages, then wrote down the results of their studies and pictures of traditional medicinal ingredients.  From the results of the competition, a scientific seminar was held with the theme; Traditional Medicine of the NTT Community; Chemical Content and Activity. The top four competition participants were selected as presenters, and discussed by Natural Materials Chemistry experts in the scientific seminar forum. It was concluded that through research competitions and seminars, it had become a means to train female students to carry out scientific research in their living environment, related to traditional medicine and present their research work.
PENGETAHUAN DAN PERILAKU MASYARAKAT LEMBATA MEMANFAATKAN POTENSI NUTRISI SARDINELLA UNTUK PENCEGAHAN STUNTING Ulnang, Arijanti Susana; Tukan, Gerardus Diri; Naben, Maria Novalina; Latumakulita, Gertreda; Tukan, Virjy Emanuela Lema; Sawo, Agustina Emiliana; Tukan, Cerry Julianus Pana; Tukan, Clara Marcian Palan
PREPOTIF : JURNAL KESEHATAN MASYARAKAT Vol. 10 No. 1 (2026): APRIL 2026
Publisher : Universitas Pahlawan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/prepotif.v10i1.55052

Abstract

Stunting sebagai masalah kesehatan masyarakat yang perlu penanganan inovatif dengan pemanfaatan sumber laut. Ikan sardinella adalah nutrisi kompleks perempuan dalam persiapan kehamilan, saat hamil, melahirkan dan bagi bayi untuk pencegahan stunting. Angka stunting di Lembata paling rendah menjadi indikator keberhasilan program pengentasan stunting dengan pemanfaatan sardinella. Peneliti ingin menginvestigasi pengetahuan dan perilaku masyarakat dalam pemanfaatan ikan sardinella untuk mencegah stunting. Studi ini dilaksanakan ingin mengetahui pengetahuan dan perilaku masyarakat Lembata terhadap pemanfaatan ikan sardinella di Lembata dalam kaitan dengan upaya pencegahan stunting, terutama sebagai asupan nutrisi bagi ibu hamil dan balita. Metode penelitian yang dilaksanakan yaitu deskriptif survey dengan design cross sectional, menggunakan purposive sampel dengan metode pengambilan data melalui wawancara terhadap 248 responden usia dewasa atau produktif. Data diolah menggunakan software SSPS 25. Hasil penelitian menunjukkan bahwa 89,1% responden mengetahui bahwa ikan sardinella merupakan salah satu jenis hewan laut yang mengandug zat gizi tinggi bagi pencegahan stunting. Perilaku responden terhadap pemanfaatan ikan sardinella diketahui bahwa 95,6% sampel berperilaku baik namun 4,4% responden berperilaku cukup terhadap konsumsi ikan sardinella dalam memenuhi asupan gizi keluarga. Responden mengetahui ikan sardinella sebagai salah satu hewan laut yang bergizi tinggi dan selalu mengonsumsinya untuk tindakan pemenuhan gizi, pencegahan stunting dan kecerdasan anak yang akan dilahirkan. Diharapkan masyarakat daerah lain dapat mencontoh pengetahuan dan perilaku pemanfaatan ikan sardinella sebagai protein yang murah untuk mencegah dan mengatasi stunting.
Co-Authors Amandha V.D. Tukan Anggelinus Nadut Anggelinus Nadut Christiani Dewi Q. M. Bulin Dewi Q. M. Bulin, Christiani Gerardus Diri Tukan Grace Rianti Latuheru Guntildis Riantobi Helena Hepa Lengari Juliano M.P. Umbu Jima Kadebu Kadebu, Juliano M. P. Umbu Jima Lalong, Paulus Risan F. Landi Pote, Lodowik Latuheru, Grace Rianti Lengari, Helena Hepa Lodowik Landi Pote Markus Taek, Maximus Munadi Munadi Naben, Maria Novalina Nadut, Angelinus Sanam, Putra Reinho Rosario Sawo, Agustina Emiliana Taek, Maximus M Taek, Maximus M. Tukan, Amandha Victoria Dwiputri Tukan, Cerry Julianus Pana Tukan, Clara Marcian Palan Tukan, Virjy Emanuela Lema Ulnang, Arijanti Susana