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Abstrak :
Asam kojat digunakan dalam sediaan kosmetik untuk membantu proses depigmentasi kulit seperti penghilangan flek akibat penuaan dan kasus hiperpigmentasi. Metode kromatografi cair kinerja tinggi dengan detektor UV untuk menganalisis asam kojat dalam kosmetik telah banyak dikembangkan. Tujuan penelitian ini adalah memperoleh kondisi analisis optimum asam kojat secara KCKT dan validasinya untuk penetapan kadar asam kojat dalam kosmetik. Sampel diekstraksi dengan KH2PO4 0,05 M (pH 2,5) dan dianalisis menggunakan kolom C18-RP, Whatman. Campuran 0,05 M KH2PO4-metanol (95:5), pH 2,5 sebagai fase gerak dengan laju alir 1,2 ml/menit. Detektor UV pada panjang gelombang 270 nm. Waktu retensi asam kojat adalah 6,0 menit. Uji linieritas pada rentang konsentrasi 12-36 ppm memberikan nilai koefisien korelasi (r) 0,9998. Batas deteksi 0,42 ppm dan batas kuantitasi1,39 ppm. Metode ini memberikan hasil uji perolehan kembali asam kojat adalah 101,72% ± 1,4689%. Kadar asam kojat dalam tiga sampel kosmetik adalah 0,767%b/b (sampel Dw), 1,079%b/b (sampel Cv), dan 0,765 % b/b (sampel Wk). Kojic acid is used in cosmetics formulation for helping depigmentation of skin including whitening age spots and hyperpigmentation. A high performance liquid chromatographic method with UV detector for analyses of kojic acid in cosmetic was developed. The aim of this research was to find out optimum condition of kojic acid and validate an analytical method for the quantification of kojic acid in cosmetics by HPLC. Samples were extracted with 0,05 M KH2PO4 buffer solution (pH 2,5) and analyzed using a Whatman C18-RP column. A mixture of 0,05 M KH2PO4 and methanol 95:5 ratio (pH 2,5) was used as mobile phase at flow rate 1,2 ml/minute. The UV detector was set at 270 nm. The retention time needed by kojic acid is 6,0 minute. Linearity was established for range of concentration 12 - 36 ppm with coefficient of correlation of 0,9998. The limit of detection (LOD) and the limit of quantitation (LOQ) were 0,42 ppm and 1,39 ppm. This method have kojic acid recovery was 101,72% ± 1,4689%. Acid kojic detected in three samples of cosmetics is 0,767% w/w for sample Dw, 1,079% w/w for sample Cv and 0,765% w/w for sample Wk.

Abstrak :
Hiperpigmentasi pada kulit manusia yang disebabkan oleh sintesis melanin yang berlebihan sangat mengurangi estetika penampilan seseorang. Upaya untuk mengatasi hiperpigmentasi adalah dengan mencari senyawa pemutih yang dapat menurunkan jumlah melanin yang disintesis pada kulit, yaitu senyawa penghambat enzim tirosinase. Telah diketahui daun trengguli (Cassia fistula L.) memiliki efek dalam menghambat aktivitas enzim tirosinase. Penelitian ini bertujuan untuk mengetahui apakah ekstrak dan fraksi pada genus tanaman yang sama yaitu kulit batang johar (Cassia siamea Lam.) memiliki efek yang serupa atau tidak. Tiga ekstrak kulit batang johar yang diuji yaitu ekstrak n-heksan, etil asetat, dan metanol pada konsentrasi akhir 250 ppm. Kemudian dilakukan fraksinasi pada ekstrak dengan aktivitas penghambatan tertinggi menggunakan kromatografi kolom dipercepat hingga didapat fraksi-fraksi. Fraksi kembali diuji pada konsentrasi akhir 250 ppm. Dilakukan identifikasi fitokimia pada ekstrak dan fraksi dengan aktivitas penghambatan tertinggi. Didapatkan ekstrak metanol memiliki aktivitas penghambatan enzim terbesar dengan persentase inhibisi sebesar 22,56711% dan fraksi dengan aktivitas penghambatan tertinggi adalah fraksi metanol E dengan persentase inhibisi sebesar 19,1919%. Diketahui ekstrak metanol mengandung glikosida, saponin, antrakuinon, steroid, terpenoid, dan tanin, sedangkan fraksi metanol E mengandung glikosida, antrakuinon, steroid, terpenoid, dan tanin. ......Hyperpigmentation on human skin caused by excessive melanin sythesis is very uncomfortable for personal’s esthtetics. The effort to reduce hyperpigmentation is discovering whitening skin agent which is able to reduce melanin content synthesized by skin, though the tyrosinase enzyme inhibition. It had been known that the leaves of trengguli (Cassia fistula L.) have tyrosinase enzyme inhibition activity. The purpose of this research is to know whether the extract and fraction on the same genus plant of johar (Cassia siamea Lam.) stem bark have the same activity or not. Three extracts of johar were tested; n-hexane, ethyl acetate, and methanol extract on final concentration 250 ppm. Then highest inhibition activity extract was fractionated by vacuumed column chromatography to be some fractions. Fractions were again tested on final concentration 250 ppm. The highest inhibition activity extract and fraction were identified phytochemically. The result is methanol extract is the highest inhibition activity with inhibitory percentage 22,56711% and the highest inhibition activity fraction is methanol fraction E with inhibitory percentage 19,1919%. The methanol extract has glycoside, saponin, anthraquinone, steroid, terpenoid, and tannin, on the other hand methanol fraction E has glycoside, anthraquinone, steroid, terpenoid, and tannin.

Abstrak :
Latar Belakang: Tuberkulosis resistan obat (TB RO) masih menjadi masalah kesehatan utama di dunia. Tahun 2020 secara global terdapat 157.903 kasus TB Multi Drug Resistant/Rifampicin Resistant (MDR/RR) terdeteksi dan ternotifikasi, 95% dilakukan enrollment, namun angka keberhasilan pengobatan TB RR/MDR sebesar 59% dan TB XDR sebesar 52%, sedangkan di Indonesia terdapat 8.268 kasus TB RR/MDR, 52% dilakukan enrollment namun angka keberhasilan pengobatan TB RR/MDR sebesar 47% dan TB XDR 30%. Tahun 2020, Klofazimin (CFZ) merupakan salah satu bagian grup B pengobatan TB RO tanpa injeksi pada paduan jangka pendek dan jangka panjang. Terdapat beberapa efek samping dalam penggunaan CFZ salah satunya adalah hiperpigmentasi kulit. Penelitian ini bertujuan untuk mengetahui kekerapan, karakteristik subjek, awitan, durasi, dan derajat hiperpigmentasi kulit akibat CFZ serta faktor apa saja yang berhubungan pada pengobatan TB RO di RSUP Persahabatan. Metode: Desain penelitian ini adalah kohort retrospektif menggunakan data rekam medis pasien, dilakukan di Poli TB RO RSUP Persahabatan Juli 2021-Mei 2022, dengan teknik total sampling. Subjek penelitian adalah pasien TB RO yang mendapatkan CFZ di Poli TB RO di RSUP Persahabatan yang memulai enrollment pada tahun 2019-2020 yang memenuhi kriteria penelitian. Hiperpigmentasi kulit dinilai dari anamnesis bulanan setiap pasien kontrol. Hasil: Didapatkan 429 subjek penelitian dengan kekerapan hiperpigmentasi kulit pada 48 subjek (11,18%). Karakteristik subjek usia 41 (18−78) tahun, 58% laki-laki, 48% dengan gizi kurang dan normal, 25,2% komorbid DM tipe 2 dan 2,8% komorbid HIV, durasi pengobatan 285 (1−860) hari, kasus terbanyak TB RR/MDR sebesar 89,3%, dan luaran sembuh sebesar 47%. Efek samping hiperpigmentasi kulit didapatkan dengan median awitan 31 (28−168) hari pengobatan dan hingga pengobatan selesai efek samping hiperpigmentasi kulit masih didapatkan (belum reversibel). Kesimpulan: Terdapat hubungan antara efek samping hiperpigmentasi kulit dengan durasi pengobatan (p=<0,001)m yakni hari ke 344 (70−769) dan paduan jangka pendek oral dan jangka pendek injeksi (p=<0,001)f dengan RR 10,100 (5,059−20,166). ......Background: Drug-resistant tuberculosis (DR TB) is still a major health problem in the world. In 2020 globally there were 157,903 cases of Multi Drug Resistant/Rifampin Resistant (MDR/RR) TB detected and notified, 95% were enrolled, but the treatment success rate for RR/MDR TB was 59% and XDR TB was 52%, while in Indonesia there were Of the 8,268 cases of RR/MDR TB, 52% underwent enrollment but the success rate of RR/MDR TB treatment was 47% and 30% XDR TB. In 2020, Clofazimine (CFZ) is part of group B RO-TB treatment without injection in short-term and long-term combinations. There are several side effects in using CFZ, one of which is skin hyperpigmentation. This study aims to determine the frequency, subject characteristics, onset, duration, and degree of skin hyperpigmentation due to CFZ and what factors are related to the treatment of DR TB at Persahabatan Hospital. Methods: The design of this study was a retrospective cohort using patient medical record data, carried out at the DR TB clinic Persahabatan Hospital from July 2021-May 2022, with a total sampling technique. The research subjects were DR TB patients who received CFZ at the DR TB clinic at the Persahabatan Hospital who started enrollment in 2019-2020 who met the research criteria. Skin hyperpigmentation was assessed from the monthly history of patient. Results: There were 429 subjects who received CFZ with frequent skin hyperpigmentation in 48 subjects (11.18%). Subject’s characteristics are 41 (18−78) years old, 58% male, 48% with malnutrition and normal, 25.2% comorbid type 2 DM and 2.8% comorbid HIV, duration of treatment 285 (1−860) days, the most cases of RR/MDR TB were 89.3%, and the outcome recovered was 47%. The side effect of skin hyperpigmentation was obtained with a median onset of 31 (28−168) days of treatment and until the end of treatment the side effect of skin hyperpigmentation was still found (not reversible). Conclusion: There is a relationship between side effects of skin hyperpigmentation with treatment duration (p=<0.001)m i.e. day 344 (70−769) and short-term oral and short-term injection (p=<0.001)f with RR 10.100 (5.059−20.166).