Hasil Pencarian  ::  Simpan CSV :: Kembali

Abstrak :
Temulawak (Curcuma xanthorriza Roxb) memiliki kandungan utama kurkuminoid dan xanthorrhizol yang dapat memberikan manfaat kesehatan bagi tubuh. NADES merupakan green solvent yang banyak diuji coba untuk mengekstraksi senyawa pada temulawak. NADES diketahui dapat meningkatkan solubilitas dan bioavailabilitas senyawa tidak larut air seperti kurkumin. Penelitian ini bertujuan untuk mencari kombinasi pelarut terbaik, menetapkan kondisi optimum ekstraksi dengan NADES menggunakan Ultrasound-Assisted Extractionuntuk senyawa kurkuminoid total (CUR) dan xanthorrhizol (XNT) pada rimpang temulawak, dan membandingkan hasilnya dengan ekstraksi konvensionalmaserasi-etanol. Variabel yang digunakan untuk optimasiberupa persentase penambahan air pada NADES (%), waktu ekstraksi (menit), dan rasio serbuk dengan pelarut (S/L). Semua variabel dimodelkan dengan menggunakan Response Surface Methodology (RSM). Penetapan kadar dianalisis menggunakan KLT densitometri yang parameternya telah divalidasi, fase gerak diklorometana-kloroform (4:6), dan dideteksi pada panjang gelombang 425 nm (CUR) dan 224 nm (XNT). Dari hasil analisis ekstraksi, NADES terbaik yaitu kolin klorida dengan asam malat (ChCl-MA) dengan rasio 1:1. Ditemukan kondisi optimum dari hasil rekomendasi RSM, yaitu pada penambahan air 27,7%, waktu ekstraksi 17,5 menit, dan rasio serbuk pelarut 1:18,5 dengan hasil kadar 4,76 mg/g total CUR dan 12,98 mg/g XNT, sedangkan maserasi-etanol 96% menghasilkan kadar 1,88 mg/g total CUR dan 9,80 mg/g XNT. NADES-UAE lebih efektif menarik senyawa CUR dan XNT dibandingkan maserasi-etanol 96%. Data pada penelitian ini berguna untuk pengembangan metode ekstraksi hijau lebih lanjut untuk mengekstrak kurkuminoid dan xanthorrhizol menggunakan NADES. ......The Javanese turmeric (Curcuma xanthorriza Roxb) contains curcuminoids (CUR) and xanthorrhizol (XNT) as a main compounds that can provide health benefits. NADES is one of the green solvent that has been tested for extracting temulawak. This study aims to obtain the optimum condition to extract total CUR and XNT from Curcuma xanthorriza Roxb. using organic acid-based NADES with Ultrasound-Assisted Extraction. The variables used were water addition (%), extraction time (min), and solid-to-liquid ratio (S/L). All variables were modelled by using Response Surface Methodology (RSM). Determination of marker content was analysed using TLC Densitometry that was validated, dichloromethane-chloroform (4:6) as mobile phase, was detected at a wavelength of 425 nm for total CUR and 224 nm for XNT. Three organic acid-based NADESs were screened to find one NADES combination that gives the highest content of CUR and XNT. It resulted in choline chloride and malic acid DES (ChCl-MA) at a 1:1 M ratio. The result showed the optimal extraction conditions with ChCl-MA (1:1) is 25% water addition, 15 minutes of extraction time, and a 1:20 S/L ratio. These conditions produce total CUR levels of 4.58 mg/g and XNT of 12.93 mg/g; the ethanol 96%-maceration produces 1.88 mg/g total CUR levels and 9.80 mg/g XNT. The most influential variable observed for the extraction was the solid-to-liquid ratio (S/L) and the addition of water (%) (p<0,05). Based on the result, NADES-UAE is more effective than ethanol maceration. The data reported herein are useful for further developments of green extraction methods to extract curcuminoids and xanthorrhizol.

Abstrak :
The microbial contamination in the rhizomes of medicinal plants including Curcuma amada rhizomes is generally high. This due to the fact that rhizomes are the bottom parts that grow in the soil. Based on the Regulation of Head of the Indonesian National Agency of Drug and Food Control Number HK.00.06.1.52.4011, the limits of microbial contamination in herbal/medicinal plants are 106 cfu/g for the total microbial and 2×104 cfu/g for the total yeast and mold. Gamma irradiation is one of the methods to reduce microbial contamination in medicinal plants. In this research, the effectiveness of gamma irradiation in microbial reduction and its effects to curcuminoid contents was determined by irradiating Curcuma amada rhizomes at doses of 5 and 10 kGy. The initial contamination in this rhizome was 8.78×107 cfu/g and 5×101 cfu/g for the total microbial and for the total yeast and mould, respectively. The result indicates that at 5 kGy, the microbial contamination and the mould and yeast contamination were reduced from 8.78×107 cfu/g and 5×101 cfu/g to 1.39×104 cfu/g and under 1×101 cfu/g, respectively. Meanwhile the comparison of curcuminoids between the irradiated and non irradiated samples was performed by HPLC method and was found to actually increase from 0.26% to 0.36% after the 5-kGy irradiation. It can be concluded that an irradiation dose of 5 kGy is effective to reduce the content of microorganisms without lowering curcuminoids. Gamma radiation could be used as decontamination method in medicinal plants.

Abstrak :

Berdasarkan data dari World Health Organization (WHO), kematian yang disebabkan oleh tukak lambung di Indonesia mencapai 0,99 persen yang didapat dari angka kematian 8,41 per 100.000 populasi. Untuk menghasilkan obat tukak lambung, maka alat gastroretentif dengan sistem administrasi oral yang memiliki waktu tinggal lebih lama di lambung, kelarutan yang rendah di pH alkalin, absorbsi yang cepat dapat dikembangkan. Oleh sebab itu, dibutuhkan sistem yang baik untuk mendapatkan kontrol rilis yang baik. Pada penelitian ini, obat terdiri dari curcuminoids yand didapat dari ekstrak Curcuma Longa dari metode maserasi menggunakan aseton sebagai solven. Sistem gastroretentif diformulasikan menggunakan polimer densitas rendah (HPMC K4M, HPMC E15, dan EC) serta agen efervesen yang dapat membentuk sistem apung pada tablet di lambung. Tablet apung tersebut dikarakterisasi tentang variasi massa, kekerasan, keregasan, loading, disolusi in vitro, dan waktu jeda mengapung.

 

---

According to World Health Organization (WHO), the death from gastric ulcer in Indonesia reaches 0.99 percent which is obtained from the death rate 8.41 per 100,000 population. In order to create a gastric ulcer drug, the gastroretentive devices, a gastric-targeted drugs via oral administration which have longer retention in the stomach, poor solubility at an alkaline pH, and rapid absorption from the gastrointestinal tract need to be developed. Therefore, a prefect system to obtain long term and controlled release is required. In this research, the drug is consist of curcuminoids from  Curcuma Longa extracts from maceration method with acetone solvent. The gastroretentive devices is formulated with some other compound such as low density polymers (HPMC K4M, HPMC E15, and EC) and effervescent agent that can form a floating system in the gastric. The floating drug delivery tablets are characterized for their weight variation, hardness, friability, drug loading, in vitro dissolution studies, and floating lag time. The developed curcumin floating tablet system is a promising floating drug delivery system for oral sustained administration of curcumin.