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"Senyawa 2-hidroksi-1,4-naftokuinon atau lawson merupakan senyawa yang terkandung dalam tanaman Lawsonia inermis biasa juga disebut pacar kuku. Pacar kuku merupakan tanaman yang mudah dijumpai dan di dalamnya terkandung senyawa fenolik, khususnya naftokuinon yang memiliki aktivitas biologis seperti antibakteri, antikanker, antitumor, serta berpotensi menjadi antioksidan. Melalui pendekatan reaksi multikomponen sintesis senyawa turunan 2-hidroksi-1,4-naftokuinon dengan variasi aldehida aromatik (banzaldehida, sinamaldehida, 4-hidroksi benzaldehida), hidrazin, dan katalis iodin telah berhasil disintesis. Berdasarkan hasil (senyawa 1) hasil reaksi menggunakan benzaldehida belum berhasil disintesis dengan nama IUPAC 2-(hidrazinil(fenil)metil)-3- hidroksinaftalen-1,4-dion dengan rendemen sebesar 91%, untuk (senyawa 2) hasil reaksi menggunakan sinamaldehida juga belum terbentuk 2-(1-hidrazinil-3-fenilalil)-3- hidroksinaftalen-1,4-dion dengan rendemen sebesar 91,75%, untuk (senyawa 3) dengan rendemen sebesar 87,22% belum berhasil juga membentuk senyawa 2-(hidrazinil(4- hidroksifenil)metil)-3-hidroksinaftalen-1,4-dion dari hasil reaksi menggunakan 4- hidroksi benzaldehida. Analisis produk hasil sintesis dikonfirmasi dengan KLT, UV-Vis, FTIR, dan GC-MS. Uji aktivitas antioksidan didapatkan nilai IC50 dari senyawa 1 dan senyawa 2 masing-masing sebesar 204,94 dan 139,06 ppm.

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2-hydroxy-1,4-naphthoquinone or lawson are compounds where is contained in the Lawsonia inermis plant, also commonly called pacar kuku. Pacar kuku is a plant that is easily to found and it contained in phenolics, especially that naphthooquinone derivativies have biological activities such as antibacterial, anticancer, antitumor, and have the potential to become antioxidants. Through a multicomponent reaction synthesis approach 2-hydroxy-1,4-naphthooquinone derivativies compounds with aromatic aldehyde variations; banzaldehida; cinnamaldehyde; 4-hydroxy benzaldehyde, hydrazine, and iodine catalyst have been synthesized. Based on the results (compound 1) have not succeeded with the name IUPAC 2- (hydrazinyl (phenyl) methyl) -3- hydroxynaphthalene-1,4-dione with 91% yield, for the (compound 2) is still have not ducceeded with the name (E) -2- (1-hydrazinyl- 3-phenylallyl) -3-hydroxynaphthalene- 1,4-dione with 91,75% yield, and then (compound 3) with 87,22% yield have not succeeded in forming 2- (hydrazinyl (4 hydroxyphenyl) methyl) compounds - 3- hydroxynaphthalene-1,4-dione from the reaction using 4-hydroxy benzaldehyde. The analysis of the synthesis products was confirmed by TLC, UV-Vis, FTIR, and GC-MS. The antioxidant acti"

"Penapisan amilase 32 isolat actinomycetes dari sedimen pesisir dan serasah lamun Pulau Pramuka, Kepulauan Seribu, DKI Jakarta dilakukan secara kualitatif dan semi-kuantitatif menggunakan metode iodin. Penapisan amilase dari isolat secara kualitatif pada medium starch agar dilakukan dengan mengukur lebar clear zone dan diekspresikan dalam nilai indeks aktivitas. Penapisan amilase secara semi-kuantitatif pada medium pertumbuhan starch broth dilakukan dengan spektrofotometer pada panjang gelombang cahaya 620 nm. Pengukuran kadar glukosa yang terbentuk dan aktivitas amilase dari isolat terpilih dalam medium soluble starch 1% (SBs) dan tepung beras 1% (SBb) dilakukan dengan metode Dinitrosalicylic Acid (DNS) pada panjang gelombang 540 nm. Hasil penapisan amilase kualitatif menunjukkan indeks aktivitas amilase tertinggi diperoleh dari isolat SD 5 (4,259), SD 13 (4,154), SD 14 (3,457), dan SD 15 (4,436). Sementara itu, hasil penapisan amilase semi-kuantitatif menunjukkan isolat SD 13 memiliki transmitansi tertinggi dengan nilai 64,3% dan aktivitas amilase diukur lebih lanjut dengan metode DNS. Hasil uji kadar glukosa menunjukkan bahwa isolat SD 13 dalam SBs menghasilkan kadar glukosa yang lebih tinggi (6.379,345 μg/mL) dibandingkan dengan isolat SD 13 SBb (3.254,741 μg/mL). Aktivitas amilase SD 13 pada medium SBs lebih tinggi (26,124 ± U/mL) dibandingkan dengan aktivitas amilase pada medium SBb (14,205 U/mL). Tingginya aktivitas amilase pada SBs tersebut setara dengan banyaknya kadar glukosa yang terbentuk. Isolat SD 13 teridentifikasi secara molekuler berdasarkan data sekuens gen 16S rRNA sebagai anggota dari spesies Streptomyces champavati.

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Amylase activity of 32 Actinomycetes isolates from coastal sediment and seagrass litter of Pramuka Island, Kepulauan Seribu, DKI Jakarta were screened using two different methods involving iodine in starch medium. The first amylase screening test using starch agar was performed by measuring width of the clear zone and was expressed in activity index value. The second amylase screening test used starch broth for was done by using spectrophotometer in 620 nm of wave length.The first result showed amylase activity index is highest in SD 5 (4.259), SD 13 (4.154), SD 14 (3.457), and SD 15 (4.436) respectively. The second result indicated SD 13 has the highest transmittance of 64,3% and its glucose concentration and amylase activity was further measured using Dinitrosalisylic acid (DNS) method with two different media; 1% soluble starch (SBs) dan 1% rice flour (SBb) in 540 nm of wave length. The result showed that SD 13 isolate in SBs medium has higher glucose concentration (6,379.345 μg/mL) than in SBb (3,254.741 μg/mL). Amylase activity assay result indicated that SD 13 in SBs produced amylase with 26.124 of Enzyme Unit (U/mL), higher than in SBb (14.205 U/mL). The result was supported by the previous glucose concentration measurement. Molecular identification based on 16S rRNA gene sequences showed that SD 13 belongs to Streptomyces champavati."

"ABSTRAKPenelitian mengenai aktivitas amilolitik kapang dan sakarolitik khamir penghasil alkohol dari ragi tapai telah dilakukan. Sebanyak 22 isolat kapang dan 10 isolat khamir berhasil diisolasi dari ragi tapai yang berasal dari 5 daerah berbeda, yaitu Aceh, Bengkulu, Medan, Pontianak, dan Sulawesi. Penapisan isolat kapang secara kualitatif dan semi-kuantitatif dilakukan dengan metode iodin. Aktivitas amilase kapang secara kualitatif ditentukan berdasarkan ukuran zona bening setelah diteteskan dengan pereaksi iodin. Penapisan aktivitas amilase secara semi-kuantitatif diukur dengan spektrofotometer pada 620 nm. Hasil penapisan secara kualitatif menunjukkan bahwa isolat ZMDN1, ZMDN2, dan ZRS1 masing-masing memiliki diameter zona bening yang sama sebesar 85 mm. Penapisan secara semi-kuantitatif menunjukkan bahwa isolat ZMDN1 dan ZRS1 memiliki nilai transmitan (T) sebesar 96%, sedangkan isolat ZMDN2 memiliki nilai transmitan (T) sebesar 45%. Aktivitas amilase tiga isolat kapang terpilih diukur lebih lanjut menggunakan metode Dinitrosalicyclic Acid (DNS). Hasil menunjukkan bahwa isolat ZMDN1 memiliki nilai aktivitas amilase tertinggi sebesar 8,53 U/mL sedangkan aktivitas terendah, 4,88 U/mL dihasilkan oleh isolat ZRS1. Berdasarkan pengamatan karakter morfologi makroskopis dan mikroskopis, ketiga isolat kapang terpilih diduga merupakan anggota genus Amylomyces. Hasil penapisan khamir berdasarkan pertumbuhan sel dan pembentukan gas CO2 di dalam tabung Durham menunjukkan bahwa ketiga isolat khamir YPN2, YBKL1, dan YPN1 mampu tumbuh baik pada medium PDB dengan penambahan 15% glukosa. Produksi alkohol berdasarkan pembentukan CO2 oleh YPN2 telah terlihat dalam 24 jam, sementara isolat khamir YBKL1 dan YPN1 terlihat dalam 48 jam. Ketiga isolat khamir terpilih diduga merupakan anggota filum Ascomycota berdasarkan karakter morfologi dan kemampuan memfermentasi glukosa untuk menghasilkan alkohol dan CO2.

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ABSTRACTA research on screening of amylolytic molds and saccharolytic yeasts from ragi tapai has been done. Twenty two isolates of mold and ten isolates of yeast were isolated from ragi tapai originating from five regions in Indonesia. The five regions are Aceh, Bengkulu, Medan, Pontianak, and Sulawesi. Qualitative and semi-quantitative screening of mold isolates were carried out by iodine method. The amylase activity of molds were qualitatively determined based on the formation of clear zones after flooding with iodine reagent. Semi-quantitative screening of amylase activity was measured by spectrophotometer based on the highest transmittance value at 620 nm. Qualitative screening results showed that ZMDN1, ZMDN2, and ZRS1 isolates have the same clear zone diameter of 85 mm. Semi-quantitative screening showed that ZMDN1 and ZRS1 isolates have 96% transmittance value, whereas ZMDN2 isolates has 45% transmittance value. Based on the screening results, the three mold isolates were thought to have the highest amylase activity. The amylase activity of the three selected molds was measured further using the Dinitrosalicyclic Acid (DNS) method. The highest amylase activity value was produced by ZMDN1 isolate (8.53 U/mL), while the lowest amylase activity value was produced by ZRS1 isolate (4.88 U/mL). Based on the macroscopic and microscopic morphological characteristics, the three selected isolates belong to the genus Amylomyces. Yeast screening results based on cell growth and formation of CO2 gas in Durham tubes showed that the three yeast isolates were able to grow well on the PDB medium with the addition of 15% glucose. Alcohol production based on CO2 formation by YPN2 was detected in 24 hours, while YBKL1 and YPN1 was detected in 48 hours. The three selected yeast isolates are members of the phylum Ascomycota, based on morphological characteristic and ability to ferment glucose to produce alcohol and CO2."

"Latar Belakang: Coronavirus disease 2019 (COVID-2019) disebabkan oleh severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) dan menjadi tantangan karena menyebar luas secara cepat. Jumlah virus SARS-CoV-2 ditemukan tinggi pada awal infeksi di rongga mulut dan saluran pernapasan bagian atas. Tindakan bedah di rongga mulut memiliki potensi tinggi untuk transmisi SARS-CoV-2. American Dental Association (ADA) dan Centers for Disease Control and Prevention (CDC) merekomendasikan berkumur hidrogen peroksida 1,5% atau iodin povidon 0,2% sebelum tindakan medis. Mengurangi jumlah virus di saluran pernapasan bagian atas pada awal infeksi menurunkan keparahan perkembangan penyakit dan risiko transmisi. Nilai cycle threshold (CT) dari hasil pemeriksaan real time reverse transcription polymerase chain reaction (RT-PCR) merepresentasikan secara semikuantitatif viral load. Tujuan Penelitian: Menganalisis pengaruh berkumur iodin povidon 1% dan hidrogen peroksida 3% terhadap nilai CT RT-PCR SARS-CoV-2. Metode Penelitian: 45 subjek penelitian diambil dari pasien Rumah Sakit Umum Pusat Persahabatan yang terinfeksi SARS-CoV-2 sesuai kriteria inklusi dan ekslusi. Subjek penelitian dibagi ke dalam kelompok iodin povidon 1%, kelompok hidrogen peroksida 3%, dan kelompok kontrol. Subjek penelitian berkumur 30 detik di rongga mulut dan 30 detik di tenggorokan belakang dengan 15 ml sebanyak 3 kali sehari selama 5 hari. Analisis nilai CT dilakukan melalui pemeriksaan RT-PCR pada hari ke-1, hari ke-3, dan hari ke-5 setelah berkumur. Hasil: Didapatkan perbedaan bermakna pada hasil uji Friedman dan tampak peningkatan nilai CT RT-PCR mulai dari awal, hari ke-1, hari ke-3, dan hari ke- 5 pada keseluruhan kelompok dan masing-masing kelompok perlakuan. Hasil uji Post- Hoc dengan Wilcoxon menunjukkan perbedaan bermakna pada keseluruhan kelompok hari nilai CT RT-PCR dari keseluruhan kelompok dan kelompok iodin povidon 1%. Perbedaan bermakna sebagian besar kelompok hari nilai CT RT-PCR ditemukan dari hasil uji Post-Hoc dengan Wilcoxon pada kelompok hidrogen peroksida 3% dan kelompok kontrol, kecuali antara hari ke-1 dengan hari ke-3 dan antara hari ke-3 dengan hari ke-5 pada kelompok hidrogen peroksida 3% dan antara hari ke-3 dengan hari ke-5 pada kelompok kontrol. Peningkatan tertinggi nilai CT RT-PCR awal hingga hari ke-1 ditemukan pada kelompok hidrogen peroksida 3%, sedangkan antara hari ke-1 hingga ke-3 dan hari ke-3 hingga hari ke-5 ditemukan pada kelompok iodin povidon 1%. Usia dan jenis kelamin ditemukan tidak memiliki hubungan yang bermakna terhadap perubahan nilai CT RT-PCR. Kesimpulan: Berkumur iodin povidon 1% dan hidrogen peroksida 3% berpengaruh terhadap peningkatan nilai CT RT-PCR SARS-CoV-2. Peningkatan tertinggi nilai CT RT-PCR awal hingga hari ke-1 ditemukan pada kelompok hidrogen peroksida 3%, sedangkan antara hari ke-1 hingga ke-3 dan hari ke-3 hingga hari ke-5 ditemukan pada kelompok iodin povidon 1%.

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Background: Coronavirus disease 2019 (COVID-2019) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and poses a challenge because it can spread rapidly. The number of SARS-CoV-2 was found to be high at the beginning of infection in the oral cavity and upper respiratory tract. Surgery in the oral cavity poses high transmission risk of SARS-CoV-2. The American Dental Association (ADA) and the Centers for Disease Control and Prevention (CDC) recommend the use of mouthrinse either 1.5% hydrogen peroxide or 0.2% povidone iodine before commencing any surgical treatment. Reducing the viral load in the upper respiratory tract at the early of infection may decrease the severity of disease progression and the risk of transmission. The cycle threshold (CT) value from the real time reverse transcription polymerase chain reaction (RT-PCR) examination semi-quantitatively represents the viral load.

Objective: To analyze the effect of mouthrinsing and gargling with 1% povidone iodine and 3% hydrogen peroxide on the CT value of SARS-CoV-2.

Methods: 45 subjects were patients recruited from Persahabatan General Hospital infected with SARS-CoV-2 according to the inclusion and exclusion criteria. The subjects were divided into 1% povidone iodine group, the 3% hydrogen peroxide group, and the control group. The subjects were instructed to rinse their mouths for 30 seconds and gargle for 30 seconds at the back of the throat with 15 mL of the mouthrinse 3 times a day for 5 days. Analysis of CT values were carried out using RT-PCR on day 1, day 3 and day 5 after mouthrinsing and gargling.

Results: Significant differences were found in the results of the Friedman test, and the CT value demonstrated increases from the initial, day 1, day 3 and day 5 in the whole group and each group. The results of the Post-Hoc test with Wilcoxon showed significant differences in the whole day group of the CT value of the whole group and the 1% povidone iodine group. Significant differences in most of the day group were found from the results of the Post-Hoc test with Wilcoxon in the 3% hydrogen peroxide group and the control group, except between day 1 and day 3 and between day 3 and day 5 in the 3% hydrogen peroxide group and between day 3 and day 5 in the control group. The highest increase in the initial CT value until day 1 was found in the 3% hydrogen peroxide group, while the increase between days 1 to 3 and day 3 to day 5 was found in the 1% povidone iodine group. Age and gender showed no significant correlation with changes in CT values.

Conclusion: Mouthrinsing and gargling with 1% povidone iodine and 3% hydrogen peroxide were found to increase the CT value of SARS-CoV-2. The highest increase in the initial CT value until day 1 was found in the 3% hydrogen peroxide group, while between days 1 to 3 and day 3 to day 5 was found in the 1% povidone iodine group."

"Pada penelitian ini, dilakukan analisis tekno-ekonomi terhadap proses peningkatan bilangan iodin minyak jelantah menggunakan reaksi dehidrogenasi oksidatif (ODH) dengan katalis Ti/NiO. Proses yang dirancang disimulasikan menggunakan software Aspen Hysys. Terdapat 2 skenario proses dengan perbedaan senyawa pendonor atom oksigen yang digunakan, yaitu gas oksigen dan gas karbon dioksida. Untuk melengkapi simulasi, dilakukan pemodelan kinetika reaksi dan optimasi bilangan iodin produk setelah melewati ODH menggunakan data penelitian terdahulu berupa suhu, rasio laju alir, waktu tinggal, neraca massa, dan bilangan iodin produk. Kapasitas produksi dari pabrik ini adalah sebesar 1 megaliter/tahun. Hasil simulasi yang diperoleh berupa spesifikasi dasar alat proses, kapasitas produksi, kebutuhan bahan baku, serta kebutuhan energi dan utilitas. Lalu, dilakukan kajian keekonomian melalui perhitungan total investasi kapital dan biaya manufaktur. Terakhir, dilakukan analisis kelayakan pabrik secara ekonomi dengan mempertimbangkan nilai net present value, internal rate of return, payback period, dan profitability index. Simulasi yang dilakukan pada menunjukkan bahwa kebutuhan energi listrik dan steam sebesar 268 megajoule/jam dan 0,46 ton/jam untuk proses dengan gas oksigen serta 815 megajoule /jam dan 10 ton/jam untuk proses dengan gas karbon dioksida. Secara berurutan, total investasi kapital dan biaya manufaktur yang diperoleh sebesar Rp37,4 miliar dan Rp39,9 miliar/tahun untuk proses dengan gas oksigen serta Rp89,4 miliar dan Rp44,1 miliar/tahun untuk proses dengan gas karbon dioksida. Proyek dengan profitabilitas terbaik adalah pabrik ODH menggunakan gas oksigen dengan net present value sebesar Rp89,8 miliar, internal rate of return sebesar 35,97%, payback period selama 2,49 tahun, dan profitability index sebesar 2,40.

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In this research, a techno-economic analysis was carried out on the process of increasing the iodine value of used cooking oil using the oxidative dehydrogenation (ODH) reaction with a Ti/NiO catalyst. The designed process is simulated using Aspen Hysys software. There are 2 process scenarios with the difference is the oxygen atom donor compound used, namely oxygen gas and carbon dioxide gas To complete the simulation, modelling of the reaction kinetics and optimization of product iodine value after passing through the ODH reaction was carried out using data derived from previous research, such as temperature, flow rate ratio, residence duration, mass balance, and product iodine number. The production capacity of this factory is 1 megalitre/year. The simulation results obtained are basic specifications of process equipment, mass balance, as well as energy and utility requirements. Then, an economic study was carried out by calculating total capital investment and manufacturing costs. Finally, an analysis of the economic feasibility of the factory is carried out by considering the net present value, internal rate of return, payback period and profitability index. The simulations conducted in this study demonstrate that the electrical energy and steam requirements are 268 megajoule/hour and 0.46 tons/hour for the process with oxygen gas and 815 megajoule /hour and 10.18 tons/hour for the process with carbon dioxide gas. Sequentially, the total capital investment and manufacturing costs obtained were IDR 37.4 billion and IDR 39.9 billion/year for processes using oxygen gas and IDR 89.4 billion and IDR 44.1 billion/year for processes using carbon dioxide gas. The project with the best profitability is the ODH factory which uses oxygen gas with a net present value of IDR 89.8 billion, an internal rate of return of 35.97%, a payback period of 2.49 years, and a profitability index of 2.40."

"Latar Belakang: Pandemi COVID-19 yang saat ini sedang terjadi meningkatkan kesadaran akan risiko penularan di ruang operasi dari virus Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Dokter spesialis bedah mulut dan maksilofasial pada khususnya merupakan profesi yang rentan terhadap transmisi SARS-CoV-2 hal tersebut disebabkan karena ruang lingkup pekerjaan yang erat kaitannya dengan reservoir SARS-CoV-2 yaitu rongga mulut dan orofaring. American Dental Association (ADA), Centers for Disease Control and Prevention (CDC) dan petunjuk klinis Kementrian Kesehatan Republik Indonesia menganjurkan berkumur dengan iodin povidon sebelum tindakan kedokteran gigi. Nilai cycle threshold (CT) dari hasil pemeriksaan real time reverse transcription polymerase chain reaction (RT-PCR) merepresentasikan secara semikuantitatif viral load. Tujuan Penelitian: Menganalisis pengaruh berkumur iodin povidon 1% dan iodin povidon 0.5% terhadap nilai CT RT-PCR SARS-CoV-2 dan nilai saturasi oksigen. Metode Penelitian: 42 subjek penelitian diambil dari pasien Rumah Sakit Umum Pusat Persahabatan yang terinfeksi SARS-CoV-2 sesuai kriteria inklusi dan ekslusi. Subjek penelitian dibagi ke dalam kelompok iodin povidon 1%, kelompok iodin povidon 0.5%, dan kelompok kontrol. Subjek penelitian berkumur 30 detik di rongga mulut dan 30 detik di tenggorokan belakang dengan 15 ml sebanyak 3 kali sehari selama 5 hari. Analisis nilai CT dilakukan melalui pemeriksaan RT-PCR pada hari ke-1, hari ke-3, dan hari ke-5 setelah berkumur. Hasil: perbedaan bermakna didapatkan pada hasil uji Friedman dan tampak peningkatan nilai CT RT-PCR mulai dari awal, hari ke-1, hari ke-3, dan hari ke- 5 pada keseluruhan kelompok dan masing-masing kelompok perlakuan. Hasil uji Post- Hoc dengan Wilcoxon menunjukkan perbedaan bermakna pada keseluruhan kelompok hari nilai CT RT-PCR dari keseluruhan kelompok dan kelompok iodin povidon 1%. Perbedaan bermakna sebagian besar kelompok hari nilai CT RT-PCR ditemukan dari hasil uji Post-Hoc dengan Wilcoxon pada kelompok iodin povidon 0.5% dan kelompok iodin povidon 1%. Peningkatan tertinggi nilai CT RT-PCR awal hingga hari ke-1 ditemukan pada kelompok iodin povidon 0.5% sedangkan antara hari ke-1 hingga ke-3 dan hari ke-3 hingga hari ke-5 ditemukan pada kelompok iodin povidon 1%. Usia dan jenis kelamin ditemukan tidak memiliki hubungan yang bermakna terhadap perubahan nilai CT RT-PCR.Peningkatan nilai CT RT-PCR tidak menyebabkan pengaruh terhadap nilai saturasi oksigen. Kesimpulan: Berkumur iodin povidon 1% dan iodin povidon 0.5% berpengaruh terhadap peningkatan nilai CT RT-PCR SARS-CoV-2 dan berkumur dengan iodin povidon 1% atau iodin povidon 0.5% dapat mempertahankan saturasi oksigen dalam rentang normal 96%-99%.

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Background: The current COVID-19 pandemic is raising awareness of the risk of transmission in the operating room from the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Oral and maxillofacial surgeons in particular are professions that are vulnerable to the transmission of SARS-CoV-2, this is because the scope of work is closely related to the SARS-CoV-2 reservoir, namely the oral cavity and oropharynx. The American Dental Association (ADA) and the Centers for Disease Control and Prevention (CDC) and the clinical guidelines of the Ministry of Health Republic of Indonesia recommend gargling with iodine povidon before commencing any surgical treatment. The cycle threshold (CT) value from the real time reverse transcription polymerase chain reaction (RT-PCR) examination semi-quantitatively represents the viral load. Low blood oxygen levels or hypoxia can be defined as a measurable oxygen saturation below 94% in patients without lung disease.

Objective: To analyze the effect of mouthrinsing and gargling with iodine povidone 1% and iodine povidone 0.5% on the CT value of SARS-CoV-2.

Methods: 42 subjects were patients recruited from Persahabatan General Hospital infected with SARS-CoV-2 according to the inclusion and exclusion criteria. The subjects were divided into iodine povidone 1% group, iodine povidone 0.5% group, and the control group. The subjects were instructed to rinse their mouths for 30 seconds and gargle for 30 seconds at the back of the throat with 15 mL of the mouthrinse 3 times a day for 5 days. Analysis of CT values were carried out using RT-PCR on day 1, day 3 and day 5 after mouthrinsing and gargling.

Results: Significant differences were found in the results of the Friedman test, and the CT value demonstrated increases from the initial, day 1, day 3 and day 5 in the whole group and each group. The results of the Post-Hoc test with Wilcoxon showed significant differences in the whole day group of the CT value of the whole group and the iodine povidone 1% group. Significant differences in most of the day group were found from the results of the Post-Hoc test with Wilcoxon in the iodine povidone 0.5% group and the iodine povidone 1%, except between day 1 and day 3 and between day 3 and day 5 in the iodine povidone 0.5% group and between day 3 and day 5 in the control group. The highest increase in the initial CT value until day 1 was found in the iodine povidone 1%. Age and gender showed no significant correlation with changes in CT values. The increasing of CT value of RT-PCR did not cause any effect on oxgen saturation values, the saturation values remain normal.

Conclusion: Mouthrinsing and gargling with iodine povidone 1% and iodine povidone 0.5% had an effect on increasing the CT value of RT-PCR SARS-CoV-2 and also could maintain oxygen saturation in the normal range between 96-99%."

"Minyak jelantah kelapa sawit Indonesia memiliki bilangan iodin yang rendah (50-55 g-I2/100g) jika dibandingkan dengan permintaan kualitas ekspor oleh Eropa (minimal 70 g-I2/100g). Minyak jelantah jika dibuang begitu saja dapat mencemari lingkungan dan jika dipakai berulang kali dapat memberikan dampak bagi kesehatan. Maka, salah satu solusi untuk minyak jelantah yang ada di Indonesia yaitu mengekspornya ke Eropa untuk dijadikan bahan baku pembuatan biodiesel. Dehidrogenasi oksidatif (ODH) merupakan salah satu metode alternatif dalam menghilangkan senyawa hidrogen pada minyak jelantah untuk dapat meningkatkan bilangan iodin dari minyak jelantah sehingga dapat memenuhi standar kualitas ekspor. Penelitian ini bertujuan untuk mengetahui performa dari karbon dioksida sebagai donor oksigen dan Ti/NiO sebagai katalis untuk meningkatkan bilangan iodin dengan mengurangi senyawa hidrogen pada minyak jelantah sehingga terbentuk ikatan rangkap. Variasi yang dilakukan adalah rasio loading katalis dan suhu reaksi. Untuk mengetahui jumlah bilangan iodin sebelum dan sesudah proses ODH, digunakan metode Wijs dengan standar ASTM D5554-15 dan uji FTIR untuk memvalidasi adanya peningkatan ikatan rangkap pada produk. Hasil penelitian menunjukkan bilangan iodin yang paling tinggi didapatkan dari hasil reaksi ODH dengan suhu reaksi 350oC dan rasio loading katalis Ti/NiO 2% dengan bilangan iodin sebesar 75 g-I2/100g.

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Indonesian palm cooking oil has a low iodine value (50-55 g-I2/100g) compared to the export quality demand by Europe (at least 70 g-I2/100g). If used cooking oil is thrown away, it can pollute the environment and if used repeatedly, it can have an impact on health. So, one solution for used cooking oil in Indonesia is to export it to Europe to be used as raw material for biodiesel production. Oxidative dehydrogenation (ODH) is one of the alternative methods in removing hydrogen compounds in used cooking oil to increase the iodine number of used cooking oil so that it can meet export quality standards. This study aims to determine the performance of carbon dioxide as an oxygen donor and Ti/NiO as a catalyst to increase the iodine number by reducing hydrogen compounds in used cooking oil so that double bonds are formed. Variations made are catalyst loading ratio and reaction temperature. To determine the amount of iodine number before and after the ODH process, the Wijs method was used with ASTM D5554-15 standard and FTIR test to validate the increase of double bonds in the product. The results showed that the highest iodine number was obtained from the ODH reaction with a reaction temperature of 350oC and a Ti/NiO catalyst loading ratio of 2% with an iodine number of 75 g-I2/100g."

"Eksipien koproses xanthan gum-amilosa tersambungsilang (Ko-CLA-XG) beresiko mengalami degradasi enzimatis oleh α-amilase. Hal ini dapat mempengaruhi pelepasan obat dalam matriks eksipien Ko-CLA-XG. Penelitian ini bertujuan untuk mengetahui degradasi enzimatis eksipien Ko-CLA-XG dan melihat pengaruh α-amilase pada profil disolusi tablet lepas lambat natrium diklofenak dengan matriks eksipien Ko-CLA-XG. Eksipien Ko-CLA-XG merupakan hasil koproses dari amilosa tersambungsilang dengan xanthan gum. Amilosa disambungsilang dengan menggunakan natrium trimetafosfat dalam konsentrasi 6% dan 12%. Eksipien Ko-CLA6-XG dan Ko-CLA12-XG dibuat dengan perbandingan 1:1, 1:2, dan 2:1 kemudian dilakukan uji degradasi enzimatis dengan metode iodin. Selanjutnya eksipien Ko-CLA-XG diformulasikan menjadi tablet lepas lambat dengan metode kempa langsung. Tablet lepas lambat yang dihasilkan dievaluasi dan dipelajari profil pelepasan obat dengan dan tanpa menggunakan α-amilase.Hasil penelitian menunjukkan derajat substitusi CLA6 dan CLA12 adalah 0,204 dan 0,319. Waktu untuk mendegradasi CLA sebanyak 20% dari eksipien Ko-CLA6-XG 1:1, 1:2, dan 2:1 berturut-turut adalah 28 menit, 43 menit, dan 24 menit serta eksipien Ko-CLA12-XG 1:1, 1:2, dan 2:1 berturut-turut adalah 44 menit, 45 menit, dan 36 menit. Seluruh tablet lepas lambat yang diformulasikan memenuhi persyaratan evaluasi tablet. Profil pelepasan tablet dengan matriks eksipien Ko-CLA-XG tidak terpengaruh oleh adanya α-amilase. Oleh karena itu, eksipien Ko-CLAXG dapat digunakan sebagai matriks tablet lepas lambat.

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Coproccessed xanthan gum-crosslinked amylose (Co-CLA-XG) excipients are at risk of enzymatic degradation by α-amylase. It may affect the drug release of tablets with Co-CLA-XG excipients matrices. This study aims to know the enzymatic degradation of Co-CLA-XG excipients and to view α-amylase effect on dissolution profile of sodium diclofenac sustained release tablet with Co-CLA-XG excipients matrices. Co-CLA-XG excipients is the result of crosslinked amylose and coproccessed with xanthan gum. Amylose was crosslinked using sodium trimetaphosphate, which is 6% and 12%. Co-CLA6-XG and Co-CLA12-XG excipients were made with a ratio of 1:1, 1:2, and 2:1 then evaluated for enzymatic degradation using iodine method. Afterward, Co-CLA-XG excipients were formulated into sustained release tablets by direct compression. Tablets were evaluated and studied drug release profile using and without α-amylase.

The results showed substitution degree of CLA6 and CLA12 were 0.204 and 0.319. Time to degrade 20% CLA for Co-CLA6-XG excipients 1:1, 1:2, and 2:1 were 28, 43, and 24 minutes with Co-CLA12-XG excipients 1:1, 1:2, and 2:1 were 44, 45, and 36 minutes. Tablets fulfilled tablet evaluation requirements. The release profile of tablets with Co-CLA-XG excipients matrices were not affected by α-amylase. Therefore, Co-CLA-XG excipients can be used as a sustained-release tablet matrices."