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All Journal JMM (Jurnal Masyarakat Mandiri) Chemistry Notes
Lulan, Theodore Y. K.
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Other

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Purification and Characterization of Silica Rice Husk Ash (Oryza Sative L.) From Kupang Regency Lede, Mega O. L.; Wogo, Hermania Em; Lulan, Theodore Y. K.; Ledoh, Sherlly M. F.
Chemistry Notes Vol 3 No (1) (2021): Chem. Notes 2021, 3(1)
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/cn.v3i(1).4745

Abstract

This research had been done to purify and characterize silica from rice husk ash for two varieties of rice from Kupang Regency. The purification method used is the extraction method with alkaline solution (NaOH) and precipitation with acid solution (H2SO4). The stages in this research were preparation of rice husk ash, purification of silica rice husk ash with NaOH and H2SO4 solutions, and characterization covered: determination of acidity and surface area and determination of composition using X-ray fluorescence spectrophotometer (XRF). The results of the surface acidity test showed that the highest acidity was in Ciherang silica from Tarus, which was 2.288 mmol/g. While the surface area test showed that the largest surface area was Inpari 46 silica from Pariti, which was 184.297 m2/g with an optimum contact time of 50 minutes. The results of characterization using XRF exhibited that the highest silica purity was Ciherang rice variety from Tarus, with initial silica content data, purification with NaOH and H2SO4 were 93.9%; 98.2% and 99.1%. So that the purification process with NaOH and H2SO4 is proven to increase the silica content in the sample.
Bioaktivitas Metabolit Sekunder dari Genus Dipterocarpus Nalle, Halena A.; Lulan, Theodore Y. K.; de Rozari, Philiphi; Ola, Antonius R. B.
Chemistry Notes Vol 4 No (1) (2022): Chem. Notes 2022, 4 (1)
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/cn.v3i2.6078

Abstract

Research has been conducted with the title "Literature Study of Secondary Metabolites and Bioactivity of Plants Genus Dipterocarpus". The method used is a descriptive method with the aim of being to find out the active compounds in the genus plant dipterocarpus and to know the ability of the bioactivity of genus plants dipterocarpus. Based on the results of the study, bioactivity of secondary metabolites from planst of the genus dipterocarpus namely antidiabetic, antiplasmodial, antibacterial, antioxidant, anticlasses, cytotoxic, anticholinesterase, antiproliferation, anti-inflammatory and antimicrobial. Very strong biosaltivity indicated by the ethyl acetate faction plant D. Intricatus Sagai Antioxidant IC50 Nialial is 0.075 μg / mL. While very weak bioacchables are shown extract methanol stem plant D. Costatus as cytotoxic with ic50 value 973 ± 14.57 μg / mL.
Pengaruh Komposisi Daun Gamal (Gliricidia sepium Hbr.) dan Kotoran Sapi dengan Nutrisi Pisang terhadap Rasio C/N Kompos Sedo, Karolina M.; Tawa, Bibiana Dho; Lulan, Theodore Y. K.; Gauru, Imanuel; Cunha, Theodorus M. Da
Chemistry Notes Vol 3 No 2 (2021): Chem. Notes 2021, 3(2)
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/cn.v3i2.6089

Abstract

It has been done a research on the effect of the composition of gliricidia sepium Hbr. And cow dung with banana nutrition on the composting process on the C/N ratio. This research was conducted with the aim of knowing the effect of the composition and the length of time required for fermentation. Composting was made with a variety of cow dung : gliricidia sepium Hbr. In a ratio of 1:9, 1:1, 3:2, 7:3, 9:1, and 2:3 in % by using 25% banana nutrition and 100% water from the total weight of the manure. On this research was found that the optimal time is on 14th day with characteristic of compost that was produced, equal with the the Indonesia National Standar (SNI Kompos 19-7030-2004). The conclusion is the compcsition of cow dung and Gliricidia sepium leaves did not significant affect to the C/N compost ratio.
Pemanfaatan Silika Gel Hasil Pengolahan Abu Tongkol Jagung Termodifikasi TiO2 untuk Mengurangi Kadar Nitrat dalam Limbah Cair Tahu Lulan, Theodore Y. K.; Ndolu, Intan C. M.; Nitti, Fidelis
Chemistry Notes Vol 5 No 2 (2023): Chem Notes, 5(2), 2023
Publisher : Universitas Nusa Cendana

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Abstract

Research has been conducted with the title Utilization of Silica Gel from the processing of TiO2-Modified Corn Cob Ash to Reduce Nitrate Levels in Tofu Liquid Waste. This study aims to determine the characteristics of silica gel from the processing of TiO2-modified corn cob ash in terms of functional groups and crystallinity and to determine the effectiveness of TiO2-modified silica gel to reduce nitrate levels in tofu liquid waste using pH, time and concentration parameters. The synthesis of silica gel from corn cob ash was carried out using the sol gel method. The results of FTIR characterization showed the successful synthesis of silica gel and TiO2 modified silica gel indicated by the presence of Si-O-Si and Si-OH absorption in silica gel and Ti-O-Ti absorption in TiO2 modified silica gel. The XRD data shows that silica gel has an amorphous structure and modified silica gel has an anatase structure. The results showed that the largest nitrate reduction occurred at pH 5 by 98.69%, contact time of 60 minutes by 97.39% and optimum concentration of 200 ppm by 98.94% with the largest silica adsorption capacity of 245.94 mg/g and the percentage of nitrate reduction in tofu liquid waste by 99.94%.
PENENTUAN KANDUNGAN FENOLAT DAN AKTIVITAS ANTIOKSIDAN FRAKSI DIKLOROMETANA EKSTRAK KULIT BATANG TUMBUHAN Sterculia foetida L. Lulan, Theodore Y. K.; Asanab, Fitriani; Gauru, Imanuel; Rozari, Philipi D.
Chemistry Notes Vol 7 No 2 (2025): Chem. Notes, 7(2), 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/cn.v7i2.26455

Abstract

Sterculia foetida L. diketahui memiliki kandungan senyawa fenolat yang berpotensi sebagai sumber bahan baku obat dan sebagai agen antioksidan alami. Penelitian ini bertujuan untuk mengetahui total kandungan fenolat tumbuhan S. foetida serta mengetahui kemampuan aktivitas antioksidan fraksi diklorometana tumbuhan S. foetida. Total kandungan fenolat ditentukan dengan metode Follin- Ciocalteu. Pengujian aktivitas antioksidan S. foetida dilakukan secara kuantitatif menggunakan metode 1,1-difenil-2- pikrilhidrazil (DPPH). Prinsip dari metode ini adalah penurunan intensitas warna atau absorbansi larutan DPPH yang sebanding dengan kenaikan konsentrasi senyawa antioksidan. Hasilnya dinyatakan dengan nilai Inhibition Concentration 50 (IC50) yang menunjukkan konsentrasi suatu senyawa antioksidan yang mampu menangkal 50% radikal DPPH. Hasil penelitian menunjukan bahwa total kandungan fenolat sebesar 87.76 ± 0.85 mg GAE/g dan fraksi diklorometana ekstrak kulit batang tumbuhan S. foetida memiliki aktivitas antioksidan yang kuat dengan nilai IC50 sebesar 45.4521µg/mL.
PENDAMPINGAN PENGEMBANGAN AGRIBISNIS SORGUM DI DESA ONDOREA BARAT, NTT Djou, Laurentius Dominicus Gadi; Murdaningsih, Murdaningsih; Lanamana, Willybrordus; Lulan, Theodore Y. K.
JMM (Jurnal Masyarakat Mandiri) Vol 9, No 5 (2025): Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v9i5.34774

Abstract

Abstrak: Program Desa Binaan (PDB) di Desa Ondorea Barat, dengan mitra Kelompok Tani Pati Tau Mbadhe (25 orang), Kelompok Peternak Fongasama (25 orang) dan Kelompok PKK (25 orang), dengan tingkat pendidikan SD-SMA, dan berprofesi sebagai petani, peternak dan ibu-ibu rumah tangga. Adapun kegiatan ini bertujuan mempersiapkan Masyarakat memiliki kemandirian melalui berbagai kegiatan mulai teknik budidaya sorgum, Teknik pascapanen sorgum, pembangunan rumah kompos, penyuluhan dan Pelatihan pembuatan pupuk kompos, Pengolahan berbagai produk turunan, pelatihan dan pendampingan usaha serta pemasaran. Metode yang digunakan terdiri dari penyuluhan, pelatihan dan pendampingan. Kegiatan diawali dengan pembangunan rumah kompos berukuran, pelatihan pembuatan kompos, pelatihan dan pendampingan budidaya, pascapanen, pengolahan berbagai produk turunan sorgum, pendampingan pengembangan usaha dan pemasaran. Kegiatan penyuluhan dan pelatihan dimulai dengan pre-test, dan rata-rata jawaban benar 30,3% dalam kategori rendah. Kegiatan pelatihan dan pendampingan kompos dengan menggunakan bahan dasar dari limbah ternak dan limbah pertanian. Pada pelatihan dan pendampingan kegiatan Teknik budidaya sorgum dan pasca panen sorgum dengan melakukan pengolahan tanah dan pemupukan untuk meningkatkan produktivitas. Hasil yang diperoleh dari budidaya sorgum, dilakukan pelatihan dan pendampingan pengolahan berbagai produk turunan mulai dari pembuatan beras sorgum menjadi tepung sorgum, kue kering berbahan sorgum, kue kembang sorgum serta pengolahan limbah budidaya sorgum yang berupa batang sorgum menjadi gula sorgum. Selanjutmya Masyarakat juga didampingi dalam mengurus perijinan registrasi usaha berupa PIRT (Produk Industri Rumah Tangga) di BPOM (Badan Pengawas Obat dan Makanan) Kabupaten Ende sehingga Masyarakat menjadi mandiri mulai dari penyediaan bahan baku sampai dengan produk turunan untuk dipasarkan yang dapat meningkatkan pendapatan masyakat atau keluarga. Post-test juga dilakukan pada akhir kegiatan dan hasilnya menunjukkan adanya peningkatan pengetahuan dan keterampilan sebesar 87% dengan kategori tinggi.Abstract: The Assisted Village Program (PDB) in West Ondorea Village, with partners from the Pati Tau Mbadhe Farmers Group (25 people), the Fongasama Livestock Group (25 people) and the PKK Group (25 people), with elementary to high school education levels, and working as farmers, livestock breeders and housewives. This activity aims to prepare the community to have independence through various activities starting from sorghum cultivation techniques, sorghum post-harvest techniques, compost house construction, extension and training in making compost, processing various derivative products, business training and mentoring and marketing. The methods used consist of extension, training, and mentoring. The activity begins with the construction of a compost house, compost making training, cultivation training and mentoring, post-harvest, processing of various sorghum derivative products, business development and marketing mentoring. The extension and training activities begin with a pre-test, and the average correct answer is 30.3% in the low category. Training and mentoring activities for composting using livestock and agricultural waste as the basic materials. In the training and mentoring activities, sorghum cultivation techniques and post-harvest sorghum were carried out by processing the soil and fertilizing to increase productivity. The results obtained from sorghum cultivation were trained and mentored in processing various derivative products ranging from making sorghum rice into sorghum flour, sorghum-based cookies, sorghum flower cakes and processing sorghum cultivation waste in the form of sorghum stalks into sorghum sugar. Furthermore, the community was also assisted in processing business registration permits in the form of PIRT (Household Industry Products) at BPOM (Food and Drug Monitoring Agency) of Ende Regency so that the community became independent from providing raw materials to derivative products for marketing which could increase community or family income. A post-test was also conducted at the end of the activity and the results showed an increase in knowledge and skills of 87% with a high category.
Co-Authors Antonius R.B. Ola Asanab, Fitriani Bibiana D. Tawa Cunha, Theodorus M. Da Fidelis Nitti Gauru, Imanuel Hermania Em Wogo Lanamana, Willybrordus Laurentius Dominicus Gadi Djou Lede, Mega O. L. Ledoh, Sherlly M. F. Murdaningsih Murdaningsih, Murdaningsih Nalle, Halena A. Ndolu, Intan C. M. Philiphi de Rozari Rozari, Philipi D. Sedo, Karolina M.