Hasil Pencarian  ::  Simpan CSV :: Kembali

"ABSTRAKKurkumin merupakan konstituen utama dari tanaman kunyit (Curcuma longa) yang dikenal memiliki aktivitas antiinflamasi yang poten. Kurkumin juga dikenal karena profil keamanannya yang baik. Namun, potensi kurkumin sebagai agen terapeutik terbatas karena stabilitas, kelarutan, dan bioavailabilitasnya yang buruk. Penelitian ini bertujuan untuk memperoleh senyawa baru turunan kurkumin yang diharapkan mempunyai stabilitas dan kelarutan lebih baik. Sintesis turunan kurkumin baru dilakukan melalui siklisasi gugus β diketon pada kurkumin menjadi cincin pirazol dan penambahan dipirolidinometil pada senyawa tersebut melalui reaksi Mannich. Sintesis turunan kurkumin ini dilakukan melalui 2 tahap pereaksian. Tahap pertama adalah sintesis kurkumin pirazol (KP). KP diperoleh dengan mereaksikan kurkumin dengan hidrazin hidrat dalam asam asetat glasial. Pada tahap ini, diperoleh nilai rendemen sebesar 85,56%. Tahap kedua dilakukan dengan mereaksikan hasil sintesis kurkumin pirazol dengan formaldehid dan basa pirolidin dalam etanol. Hasil akhir sintesis dimurnikan dengan kromatografi lapis tipis (KLT) preparatif menggunakan fase gerak kloroform,etanol,ammonia (11:0,5:0,5). Nilai rendemen senyawa murni diperoleh sebesar 15,66%. Elusidasi struktur senyawa menggunakan Spektrofotometer FT IR menunjukkan bahwa senyawa 3,(dipirolidinometil) kurkumin pirazol telah berhasil disintesis.

---

ABSTRACT

Curcumin is the main constituent of turmeric (Curcuma longa) which is known to have potent anti inflammatory activity. Curcumin is also known for its safety profile. However, the potential of curcumin as a therapeutic agent is limited due to its poor stability, solubility, and bioavailability. This research aims to obtain new compound derived from curcumin which is expected to have better stability and solubility. The synthesis of new curcumin derivative was carried out through cyclization of β-diketone groups in curcumin into a pyrazole ring and the addition of dipyrrolidinylmethyl to the compound through Mannich reaction. The synthesis was carried out through two stages of reaction. The first step was the synthesis of curcumin pyrazole. This was obtained by reacting curcumin with hydrazine hydrate in glacial acetic acid. At this stage, yield value of 85.56% was obtained. The second step was carried out by reacting the results of the synthesis of curcumin pyrazole with formaldehyde and pyrolidine base in ethanol. The final synthesis result then purified by preparative thin layer chromatography (TLC) using the mobile phase of chloroform,ethanol,ammonia (11: 0.5: 0.5). The yield value of pure compound was 15.66%. Structure elucidation of the compound using FT IR spectrophotometer showed that the compound of 3,3(dipyrrolidinylmethyl) curcumin pyrazole was successfully synthesized."

"

Kurkumin merupakan bahan alam yang berasal dari tanaman kunyit (Curcuma longa L). Kurkumin dapat dikembangkan sebagai obat baru karena memiliki aktivitas biologis yang beragam, seperti: antioksidan, antiinflamasi, antikanker, antidiabetes, dan mengobati penyakit kardiovaskuler. Kurkumin juga relatif aman dikonsumsi dalam jumlah besar, namun potensi terapeutiknya terbatas karena bioavalibiltasnya yang buruk. Faktor penyebabnya antara lain karena rendahnya kelarutan kurkumin dan stabilitasnya dalam cairan biologis tubuh. Salah satu cara untuk memperbaiki hal tesebut, dapat dilakukan dengan memodifikasi struktur kurkumin menjadi kurkumin pirazol dan dilanjutkan dengan penambahan basa Mannich. Penelitian ini bertujuan untuk memperoleh senyawa kurkumin pirazol tersubstitusi basa Mannich yang lain, yaitu Mannich dimetilamin. Sintesis dilakukan dalam dua tahap. Tahap pertama adalah sintesis kurkumin pirazol dengan metode pengadukan kurkumin dan hidrazin dalam pelarut asam asetat glasial pada suhu kamar selama 6 hari. Pada tahap pertama diperoleh kurkumin pirazol dengan nilai rendemen dari senyawa crude sebesar 85,56%. Tahap kedua adalah penambahan gugus basa Mannich menggunakan larutan formaldehida dan dimetilamin dalam pelarut etanol dengan metode refluks selama 6 jam. Nilai rendemen senyawa murni dari pada tahap kedua sebesar 25,56%. Senyawa tahap pertama dan kedua diuji kemurniannya dengan kromatografi lapis tipis dan jarak lebur. Karakterisasi senyawa dilakukan dengan menggunakan spektroskopi FT-IR menunjukkan bahwa sintesis senyawa baru 3,3-bis(dimetilaminometil) kurkumin pirazol telah berhasil.

---

Curcumin is a natural material from turmeric (Curcuma longa L). Curcumin can be developed as a new drug because it has a variety of biological activities, such as  antioxidants, anti-inflammatory, anticancer, antidiabetic, and treating cardiovascular disease. Curcumin is also relatively safe to be consumed in a considerable amount, but the therapeutic potential is limited because of its poor bioavailability. It is caused by the low solubility of curcumin and its stability in biological fluids of the body. One of the method to improve that, can be done by modifying the structure of curcumin into curcumin pyrazole and followed by adding a Mannich base. The aim of this research is to synthesize curcumin pyrazole substituted with another Mannich base, which is Mannich dimethylamine. The synthesis was done in two steps. The first step is the synthesis of curcumin pyrazole by stirring curcumin and hydrazine in acetic acid glaciale at room temperature for 6 days. In the first step, the pyrazole curcumin was obtained with a crude yield value of 85.56%. While the second step is the addition of the Mannich base group by refluxing formaldehyde solution and dimethylamine in ethanol for 6 hours. The yield value of pure final products of this steps is 25.56%. Product compound from the first and second steps was tested for purity by thin layer chromatography and melting point. The characterization of new compounds was done using infrared spectroscopy showed that synthesis of 3,3-bis(dimethylaminomethyl) curcumin pyrazole as a new compound has succeeded.

"

"Kurkumin merupakan senyawa aktif dari rhizoma tanaman kunyit Curcuma domestica yang memiliki berbagai aktivitas biologis, seperti: antiinflamasi, antikanker, antioksidan, antibakteri, dan antivirus. Kurkumin aman untuk dikonsumsi dalam jumlah besar, namun belum bisa diterima sebagai obat terapetik karena bioavalabilitas yang rendah akibat kelarutannya dalam air yang sangat rendah. Untuk memperbaiki bioavailabilitas dan bioaktivitas kurkumin, dilakukan percobaan sintesis analog kurkumin baru melalui modifikasi kurkumin pirazol dengan penambahan gugus 1-metilpiperazin. Sintesis dilakukan dalam 2 tahap. Tahap pertama adalah sintesis kurkumin pirazol dari kurkumin dan hidrazin hidrat dalam asam asetat glasial. Tahap ini berhasil mengganti gugus beta diketon menjadi gugus pirazol dengan nilai rendemen dari senyawa crude 63,20. Tahap selanjutnya, kurkumin pirazol direaksikan dengan paraformaldehid dan 1-metilpiperazin dalam asetonitril. Nilai rendemen hasil senyawa murni tahap 2 yang diperoleh sebesar 14,51. Senyawa akhir ini diuji aktivitas antiinflamasinya secara in vitro dengan uji denaturasi albumin telur. Namun, hasil uji yang diperoleh menunjukkan bahwa senyawa turunan basa Mannich 1-metilpiperazin dari kurkumin pirazol bersifat memicu denaturasi albumin telur.

---

Curcumin is an active compound from turmeric Curcuma domestica which shows many biological activity, such as anti inflammatory, anticancer, antioxidant, antibacterial, and antivirus. Curcumin is safe to be consumed in considerable amount, but still cannot be accepted as a therapeutic drug because of its low bioavailability. A new synthetic modification of curcumin analogue was done to improve its bioavailability and bioactivity. This synthesis was done in 2 steps. Step one was synthesis of curcumin pyrazole by reacting curcumin with hydrazine hydrate in glacial acetic acid. This method was succeeded in replacing beta diketone group with pyrazole group with a crude yield value of 63,20. Next step was reaction of curcumin pyrazole with paraformaldehyde and 1 methylepiperazine in acetonitrile. The yield value of pure final product was 14,51. The final product was tested for its in vitro anti inflammatory activity by egg albumin denaturation test. However, the result shows that 1 methylpiperazine Mannich base of curcumin pyrazole was triggering egg rsquo s albumin denaturation."

"Kurkumin merupakan senyawa yang dilaporkan memiliki aktivitas sebagai senyawa antiinflamasi. Namun, stabilitas dan aktivitasnya belum sesuai harapan sebagai agen terapeutik. Penelitian ini bertujuan untuk memperoleh senyawa derivat Mannich dari kurkumin dan meningkatkan aktivitas antiinflamasi dari senyawa ini. Salah satu metode yang dilakukan adalah pengubahan gugus keton menjadi cincin pirazol. Pengubahan gugus ini dilaporkan dapat meningkatkan aktivitas kurkumin. Aktivitas senyawa diharapkan meningkat dengan menambahkan dietilamin sebagai basa mannich, untuk meningkatkan aktivitas antiinflamasi. Pereaksian ini dilakukan dengan merefluks kurkumin pirazol dengan formaldehida dan dietilamin dalam asetonitril selama 5 jam. Endapan yang didapat kemudian dicek dengan menggunakan kromatografi lapis tipis dengan fase gerak metanol:kloroform 2:1. Pemurnian dilakukan dengan kromatografi kolom 1:20 dengan fase gerak yang sama. Rendemen senyawa murni yang didapat sebesar 88,47. Karakterisasi senyawa dilakukan dengan spektrofotometri IR, 1H-NMR, 13C-NMR, dan HRMS. Aktivitas antiinflamasi senyawa sintesis didapat dengan mengukur turbiditas denaturasi albumin telur ayam. Senyawa hasil sintesis, Kurkumin pirazol basa Mannich dietilamin IC50 = 2258,02 ?M memiliki aktivitas 1,18 kali lebih baik dibandingkan kurkumin IC50 = 2670,042 ?M , 1,46 kali lebih baik dibandingkan kurkumin pirazol IC50 = 3310,098 ?M , dan 3,53 kali lebih baik dari standar natrium diklofenak IC50 = 7979,818 ?M.

---

Curcumin is a compound that has been reported to have anti inflammatory activity. However, the reported stability and activity are still inadequate to make it as a therapeutical agent. This research goals are to obtain Mannich derivate compound of curcumin, and to increase its anti inflammatory activity. One method that has been developed is the rearrangement of ketone group into pyrazole ring. This rearrangement has been reported to increase the activity of curcumin. This method is developed further by substituting diethylamine to increase the anti inflammatory activity. Substitution of the Mannich base was done by refluxing curcumin pyrazole with formaldehyde and diethylamine in acetonitrile for 5 hours. The sediment that obtained was checked by thin layer chromatography with methanol chloroform 2 1 as its eluent.

Purification of the sediment was done by column chromatography 1 20 with the same eluent. The yield of purified product was 88,47 . The characterization of the new compound was done by infrared spectrophotometry, 1H NMR, 13C NMR, and HRMS. Anti inflammatory in vitro test of the new compound was done by quantitating the turbidity of hen egg rsquo s albumin denaturation. The synthesized compound, curcumin pyrazole with diethylamine as Mannich Base IC50 2258,02 M , has an activity which 1,18 times better than curcumin IC50 2670,042 M , 1,46 times better than curcumin pyrazole IC50 3310,098 M , and 3,53 times better than the standard, sodium diclofenac IC50 7979,818 M. "

"

Indonesia adalah negara tropis dengan transmisi infeksi DENV yang tinggi dan sebuah ancaman kesehatan di dunia tanpa terapi spesifik yang dapat bekerja secara tunggal. Rakyat Indonesia memiliki kepercayaan tinggi atas obat herbal, salah satunya yang berasal dari Kunyit dengan senyawa utama, Kurkumin dengan efek antioksidan, pencegah kanker dan anti-inflamasi yang sudah terbukti melalui uji in vivo dan in vitro. Beberapa penelitian membuktikan bahwa kurkumin bekerja sebagai antivirus DENV-2 namun mekanisme yaitu waktu dimana kurkumin bekerja paling efektif, belum diketahui. Penelitian ini dilakukan secara in vitro dengan Sel Vero yang diinfeksikan DENV-2. Fokus pada penelitian ini adalah membandingkan mekanisme penghambatan replikasi DENV-2 sekaligus persentase viabilitas sel pada pre-post (whole) dan post infeksi setelah diberikan Kurkumin dengan dosis 20 ug/mL. Infektivitas hambatan dan viabilitas sel diteliti melalui metode focus assay dan MTT assay. Berdasarkan penelitian yang dilakukan, hasil penghambatan inefektivitas pada mekanisme pre-post (whole) dan post infeksi adalah 99,74% ± 3,90 dan 51,31% ± 8,97 secara berurutan. Penelitian untuk viabilitas sel mendapatkan hasil 73,21% dan 81,66% untuk pre-post (whole) dan post infeksi secara berurutan. Hasil penelitian menunjukan kurkumin memiliki efektivitas dalam mengambat DENV-2 lebih tinggi pada mekanisme pre-post infeksi (whole), dengan persentase penghambatan lebih tinggi serta toksitas rendah dengan viabilitas diatas 50%.

---

In Indonesia, DENV infection remains a global health threat without an effective therapy available. One of Indonesian’s herbal medicine, turmeric with Curcumin as its main compound is believed to have antioxidant, cancer-preventing and anti-inflammatory effects through in vivo and in vitro trials. Previous studies have shown that curcumin act as DENV-2 antivirus. However, its mechanism, namely the time at which curcumin work effectively, is not known. This research was conducted using DENV-2 infected Vero cells through in vitro method. The focus of this study was to compare the mechanism of DENV-2 replication inhibition as well as the viability of Cell in the pre-post (whole) and post-infection phases after administrating curcumin with a dose of 20 ug/mL. Focus assay and MTT assay methods were used in the experiment. Based on the research conducted, the results of ineffectiveness inhibition on the pre-post and post infection mechanisms were 99.74% ± 3.90 and 51.31% ± 8.97, respectively. The results for cell viability showed 73.21% and 81.66% for the pre-post (whole) and post-infection mechanisms, respectively. The results showed that curcumin is more effective in inhibiting DENV-2 in the pre-post infection mechanism (whole), with a higher percentage of inhibition and less toxicity with viability above 50%.

"

"

Kurkumin merupakan pigmen kuning alami dari rimpang kunyit yang diduga memiliki aktivitas kemopreventif terhadap sel kanker melalui mekanisme jalur pensinyalan apoptosis. Penelitian ini bertujuan untuk menguji hubungan kurkumin terhadap kadar protein RASSF1A,  Bax, dan aktivitas kaspase-3 dalam menunjang  mekanisme apoptosis pada sel kanker payudara CSA03, MCF-7, dan MDA-MB-468.

Penelitian eksperimen in vitro dilakukan di laboratorium terpadu Fakultas Kedokteran Universitas Indonesia Jakarta,  laboratorium terpadu Fakultas Kedokteran Universitas YARSI Jakarta, RSUPN Dr. Cipto Mangunkusumo Jakarta, serta RS Islam Jakarta tahun 2016–2018. Pemberian kurkumin terhadap sel kanker didasarkan atas perbedaan dosis dan waktu pemberian. Uji sitotoksisitas  setelah pemberian kurkumin ditentukan secara MTS.   Kadar protein RASSF1A dan Bax diuji secara ELISA. Aktivitas kaspase-3 digunakan untuk mengetahui apoptosis diuji secara flowsitometri. Selanjutnya perubahan morfologi sel diamati melalui pewarnaan acridine orange/ethidium bromide.

Pemberian kurkumin terhadap sel-sel yang diuji menunjukkan konsentrasi IC₅₀ yaitu 40,85 µg/mL pada sel CSA03; 75,73 µg/mL pada sel MCF-7; dan 380,79 µg/mL pada sel MDA-MB-468. Pemberian kurkumin menunjang mekanisme apoptosis melalui jalur RASSF1A, Bax, dan aktivitas kaspase-3 pada sel kanker payudara.

 

Kata Kunci:  Apoptosis, Bax, CSA03, kaspase-3, kurkumin,  MCF-7, MDA-MB-468, pewarnaan ganda, RASSF1A

 

---

Curcumin is a natural yellow pigment from turmeric rhizome which is thought to have a chemopreventive effect on cancer through the mechanism of apoptotic signaling pathways. This study aims to examine the correlation of curcumin with protein level of RASSF1A, Bax, and caspase-3 activities in conjunction with the mechanism of apoptosis in CSA03, MCF-7, and MDA-MB-468 breast cancer cells.

In vitro experimental research was carried out at the Integrated Laboratory of Faculty of Medicine, Universitas Indonesia Jakarta; RSUPN. Dr. Cipto Mangunkusumo Jakarta; and Jakarta Islamic Hospital during 2016–2018. Curcumin was administered to the cancer cells in different doses and time. Cytotoxicity test after administration of curcumin was determined by MTS. The protein level of RASSF1A and Bax were measured by ELISA. Caspase-3 activity was used to determine apoptosis by flow cytometry. Furthermore, changes in cell morphology were observed by acridine orange/ethidium bromide staining.

The administration of curcumin to the cells showed IC50 concentrations of 40.85 µg/mL in CSA03 cells; 75.73 μg/mL in MCF-7 cells; and 380.79 µg/mL in MDA-MB-468 cells. The administration of curcumin supports the mechanism of apoptosis through the RASSF1A, Bax, and caspase-3 activity in breast cancer cells.

"

"ABSTRACTCurcumin is an active ingredient obtained from the turmeric plant and has been reported to havemany biological activities as anti cancer, an anti-inflammatory, antimicrobial and antioxidant although itsclinical use is limited because of its poor solubility in water and inadequate dissolution. Objective- The aimof this research is to prepare dry dispersible emulsion (DDE) of curcumin and to know its effect on enhancingthe dissolution rate of curcumin. Method-The dry dispersible emulsion was prepared byusing a high-speedhomogenization and ultrasonic technique. Caseinate sodium was used as the surfactant while virgin coconutoil was used as the lipid. Dispersion of the dry emulsion was then spray dried. Dry dispersible emulsionpowder was characterized and compared with standard curcumin. Result-The DSC test showed a significantdecrease in the melting point. Conclusion-The dissolution rate of curcumin can be significantly improvedwith a dry dispersible emulsion formulation. In formula A and formula C, the maximum dissolved curcuminincreased by 83.65%, 81.53% in formula B, and 79.12% in formula C"

"

Pendahuluan. Kurkumin merupakan senyawa alami yang ditemukan pada akar tumbuhan Curcuma longa. Kurkumin memiliki sifat penyembuhan yang sangat baik, diantaranya termasuk anti-inflamasi, anti-bakteri, dan antioksidan. Telah dijelaskan pula pada beberapa studi bahwa kurkumin memiliki sifat renoprotective yang dapat membantu memperbaiki penyakit gagal ginjal kronik (CKD). Meskipun kurkumin memiliki banyak manfaat kesehatan untuk ginjal, jumlah kurkumin yang dapat mencapai jaringan ginjal sangatlah sedikit. Hal ini dikarenakan bioavailabilitas oral kurkumin hanya mencapai 1% yang disebabkan oleh buruknya absorpsi kurkumin pada saluran pencernaan. Penelitian ini bertujuan untuk meningkatkan konsentrasi kurkumin pada organ/jaringan ginjal dengan cara memperkecil ukuran partikel kurkumin menjadi nanocurcumin.

Metode. Penelitian ini menggunakan sediaan nanokurkumin yang dibuat dengan teknik ball milling. Dosis tunggal kurkumin atau nanokurkumin sebanyak 500 mg/kg diberikan secara oral kepada tikus Sprague-Dawley betina. Tikus didekapitasi pada menit ke-180 dan -240 setelah pemberian kurkumin atau nanokurkumin untuk pengambilan organ ginjal yang nantinya setiap 100 mg jaringan ginjal akan dihomogenisasi dengan larutan Normal Saline 0.9% sebanyak 1 ml. Homogenat jaringan ginjal akan dianalisa menggunakan UPLC-MS/MS dengan sumber ionisasi electrospray (ESI) positif.

Hasil. Konsentrasi kurkumin cenderung lebih tinggi dibandingkan konsentrasi nanokurkumin pada jaringan ginjal tikus setelah pemberian dosis tunggal kurkumin/nanokurkumin sebanyak 500 mg/kg pada jam ke-3 dan ke-4.

Kesimpulan. Kurkumin cenderung untuk memiliki konsentrasi yang lebih tinggi dibandingkan konsentrasi sediaan nanokurkumin pada jaringan ginjal tikus.

---

Introduction. Curcumin is a naturally occurring compound found in Curcuma longa roots. It possesses great healing properties which mainly include anti-inflammatory, anti-bacterial, and anti-oxidative. It has also been described that curcumin has renoprotective effects and is proven to be able to ameliorate chronic kidney diseases (CKD). Despite having numerous health benefits for the kidney, the number of curcumin that can reach the kidney is very little, in respect to its low oral bioavailability which is only 1% due to poor absorption from the gastrointestinal tract. This study aims to enhance curcumin concentration in the kidney by decreasing curcumin particle size into nanocurcumin. 

Methods. This study uses nanoparticle curcumin that is produced by using ball milling technique. A single dosage of 500 mg/kg curcumin or nanocurcumin was given orally to female Sprague-Dawley rats. Rats were decapitated at minute-180 and 240 after curcumin or nanocurcumin administration for kidney collection, which then homogenized with a ratio of 100 mg kidney tissue per 1 mL normal saline 0.9%. Kidney tissue homogenates were analyzed using UPLC-MS/MS with positive electrospray ionization (ESI).

Results. Curcumin concentration in rats kidney tissue tended to be slightly higher than nanoparticle curcumin after a single dose of 500 mg/kg curcumin or nanocurcumin at both 3 and 4 hours.

Conclusion. Curcumin has the propensity to have a higher concentration than nanocurcumin in rats kidney tissue.

"

"Latar Belakang: Pemberian Tamoksifen pada kanker payudara secara terusmenerus dapat mengakibatkan terjadinya resistensi, salah satunya melaluioverekspresi Pgp dan BCRP yang merupakan transporter efluks obat. Penelitian inibertujuan untuk membuktikan apakah kurkumin dapat menghambat ekspresi mRNAPgp dan BCRP sehingga tidak terjadi resistensi. Metode: Penelitian dilakukan secaraeksperimental pada 4 kelompok perlakuan terhadap galur sel kanker payudara MCF-7: DMSO sebagai kontrol negatif, Endoksifen 1,000 nM/L ?-Estradiol 1 nM/Lsebagai kontrol positif, serta penambahan perlakuan kurkumin 8.5 ?M dan kurkumin17 ?M terhadap kontrol positif sebagai kelompok intervensi. Tingkat ekspresimRNA kemudian diukur relatif terhadap ?-aktin dengan qRT-PCR dan dihitungdengan metode Livak. Hasil: Terdapat penurunan ekspresi mRNA pada keduaparameter dan bergantung pada konsentrasi dengan rasio 1, 7.049, 1.967, dan 0.133secara berurutan p=0.02 untuk Pgp serta rasio 1, 3.848, 2.131, dan 1.232 secaraberurutan p=0.04 untuk BCRP. Kesimpulan: Kurkumin dapat menekan ekspresimRNA Pgp dan BCRP secara dependen terhadap konsentrasi.

---

Background: Tamoxifen continous intervention on breast cancer could causeresistance, which one of the pathway is by overexpressing the drug efflux transporterPgp and BCRP. This study is conducted to test whether curcumin could suppress theexpression of Pgp and BCRP mRNA and prevent drug resistance.

Method: Breastcancer cell line MCF 7 is divided into 4 intervention DMSO as negative control,Endoxifen 1,000 nM L Estradiol 1 nM L as positive control, also the addition ofcurcumin 8.5 M and 17 M on top of the positive control as the intervention group.Expression of mRNA is quantified by qRT PCR and calculated by Livak method.

Result: There is a significant decrease in mRNA expression on both parameter andare consentration dependant with the ratio of 1, 7.049, 1.96, and 0.133 respectivelyfor Pgp p 0.02 and 1, 3.848, 2.131, and 1.232 respectively for BCRP p 0.04.

Conclusion: Curcumin could suppress the expression of Pgp and BCRP mRNAdependent on the consentration."

"Kurkumin merupakan senyawa diarilheptanoid, dapat diisolasi dari rimpang kunyit, senyawa ini bertanggung jawab atas warna kuning yang ditimbulkan oleh kunyit. Selain itu, kurkumin memiliki bioaktivitas sebagai antimikroba, antiinflamasi, antikanker, antidiabetes, dan antioksidan. Modifikasi struktur kurkumin banyak dikembangkan karena beberapa penelitian menunjukkan adanya peningkatan bioaktivitas senyawa hasil modifikasi. Pada penelitian ini, dilakukan sintesis modifikasi kurkumin-sulfanilamida dan dikarakterisasi untuk diuji aktivitas antibakterinya terhadap bakteri E. coli, S.aureus dan B. subtilis. Penelitian ini dimulai dengan mengekstraksi kurkuminoid dari rimpang kunyit, diikuti isolasi kurkumin menggunakan metode kromatografi kolom, dengan eluen DCM:MeOH (97:3)v/v, hasilnya dikonfirmasi melalui KLT dengan eluen yang sama, selanjutnya dikarakterisasi menggunakan spektrofotometer UV-Vis dan FTIR. Setelah itu, dilakukan sintesis derivat kurkumin-isoksazol dengan menambahkan hidroksilamin hidroklorida pada kurkumin yang telah larut dalam piridin. Optimasi suhu dan waktu yang di dapat dari sintesis ini adalah pada 70^oC selama 8 jam, dengan persen hasil 78,80%. Sulfanilamida ditambahkan pada isoksazol untuk memodifikasi gugus OH fenol dari struktur kurkumin dengan penambahan asam asetat glasial, campuran ditriturasi menggunakan etanol, kemudian direfluks selama 20 menit, persen hasil senyawa kurkumin-sulfanilamida yang diperoleh sebesar 64,87%. Senyawa kurkumin-sulfanilamida menunjukkan aktivitas yang lebih baik terhadap bakteri gram negatif dibandingkan gram positif, dengan diameter zona hambat 11 mm.

---

Curcumin is a diarylheptanoid compound which is isolated primary from tumeric, is responsible for the yellow color caused by tumeric. In addition, curcumin exhibits a variety of biological activities such as antimicrobial, anti-inflammatory, anticancer, antidiabetic, and antioxidants. Structure modifications of curcumin have been developed because several studies have shown an increase in bioactivity. In this study, a sulfanilamide-contained curcumin compound was synthesized and characterized to investigate its antibacterial activity against E. coli,  S. aureus and B. subtilis. This research was started by extracting curcuminoids from tumeric followed by isolation curcumin using column chromatography with DCM:MeOH (97:3)v/v as eluent, the result was confirmed through TLC with the same eluent, and was characterized using UV-Vis spectrophotometry and FTIR. Afterwards, curcumin-isoxazole were synthesized by adding hydroxylamine hydrochloride into curcumin, which has dissolved in piridin. Optimization of temperature and time obtained from this synthesis was 70^oC for 8 hours, resulted in 78,80% yield. Sulfanilamide was added to isoxazole to modify OH phenol of curcumin structure by adding glacial acetic acid, the mixture was triturated with ethanol and refluxed for 20 minutes, yield of this compound was 64,87%. Curcumin-sulfanilamide compound provide better activity against E. coli than S. Aureus and B. subtillis, with diameter of inhibition zone was 11 mm."