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"Pitched at a level comprehensible to those new to the field, this authoritative text covers the scientific and technological fundamentals of drug delivery as well as clinical applications and the developmental potential in controlled release drug delivery."

"This book describes the theories, applications, and challenges for different oral controlled release formulations. This book differs from most in its focus on oral controlled release formulation design and process development. It also covers the related areas like preformulation, biopharmaceutics, in vitro-in vivo correlations (IVIVC), quality by design (QbD), and regulatory issues"

"Written for busy professionals at the forefront of new drug development, "Drug delivery" gets readers quickly up to speed on both the principles and latest applications in the increasingly important field of drug delivery. Recent developments in such areas as combinatorial chemistry, proteomics, and genomics have revolutionized researchers' ability to rapidly identify and synthesize new pharmacological compounds. However, delivery-related properties remain a significant reason for clinical trial failures. It begins with an in-depth review of key fundamentals, such as physiochemical and biological barriers; drug delivery pathways; metabolism; drug formulation; pharmacokinetic and pharmacodynamic issues; and more. The remainder of the book is devoted to the systematic examination, including overviews, timely examples, and extensive references, of a host of specific subjects."

"This book clearly demonstrates the progression of nanoparticle therapeutics from basic research to applications. This book, unlike others covering nanoparticles used in medical applications, presents the medical challenges that can be reduced or even overcome by recent advances in nanoscale drug delivery. Each chapter highlights recent progress in the design and engineering of select multifunctional nanoparticles with topics covering targeting, imaging, delivery, diagnostics, and therapy."

"ABSTRAKPenelitian formulasi kitosan bertujuan untuk menghasilkan beads kitosan yang dapat memberikan pelepasan terkendali senyawa bioaktif pada sistem pencernaan. Namun kitosan memiliki kelemahan yaitu mudah meluruh pada lambung sehingga sulit dikontrol pelepasan pada lambung itu sendiri dan pada organ di dalam sistem pencernaan setelah lambung. Dengan pemilihan metode preparasi yaitu koagulasi dengan gelatin dengan penaut silang TPP, kitosan diharapkan dapat menghasilkan profil pelepasan terkendali senyawa bioaktif pada sistem pencernaan. Formula dari komposisi kitosan yang didapatkan adalah 1% kitosan, 1% gelatin, 0.075% paracetamol dengan variasi penaut silang 1.5% TPP- 5% Sitrat dan 2.5% TPP-5% Sitrat. Dengan begitu, pengontrolan pelepasan senyawa bioaktif pada tubuh dapat terjadi sehingga penanganan terhadap penyakit serius di organ pencernaan seperti kanker usus dapat dilakukan.

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ABSTRACTThe research of chitosan formulation aims to produce chitosan beads that can provide controlled release of bioactive compounds in digestive system. However, chitosan has weakness, it will completely disintegrate in the gastric so it would be difficult to controlled, either in gastric or organ in the digestive system afterward. With the selection of preparation method that is coagulation of gelatin and TPP cross ? linker, chitosan is expected to produce a controlled release profile of bioactive compounds in the digestive system. Formulation of the beads kitosan composition is 1% kitosan, 1% gelatin, 0.075% paracetamol and variated crosslinker 1.5% TPP - 5% Sitrat and 2.5% TPP - 5% SitratThat way, controlling the release of bioactive compounds in the body can occur so that the treatment of serious diseases in digestive organs such as colon cancer can be done."

"Obat ini sangat penting bagi kehidupan manusia. Hal ini dapat membantu mengurangi rasa sakit dan menyembuhkan penyakit. Namun konsumsi obat harus mengikuti peraturan yang ada. Pelepasan obat dapat dimanipulasi melalui model obat Tujuan utama dari penelitian ini adalah untuk mendapatkan model yang valid obat terdiri dari parasetamol dan kitosan matriks. Sebuah model yang valid dapat dicapai jika hasil dari percobaan dan simulasi menunjukkan nilai perbedaan sedikit Juga konsentrasi profil parasetamol dalam bentuk padat cair dan parasetamol dalam air akan mengamati dan menganalisa secara benar Hasil dari penelitian ini adalah profil pelepasan parasetamol selama 25 menit. Dan itu menunjukkan pelepasan persen parasetamol selama 25 menit Matriks membutuhkan sekitar 7 jam untuk melepaskan parasetamol dalam matriks dengan parameter adalah koefisien pembubaran obat adalah 1x10 9 ml2 mol2 h dan koefisien difusi paraetamol dalam cairan adalah 5 x 10 8 m2 s Dari percobaan parasetamol loading 2,66%, 5,65% and 7,45%.. The pelepasan obat akan terjadi dalam larutan penyangga yaitu air dengan pH 7, 4. Diasumsikan bahwa parasetamol hanya dilepaskan ke air chitosan diasumsikan tidak melepaskan ke air sehingga air harus memiliki pH 7,4 Setelah 25 menit dari rilis persen sampel adalah 14 6 untuk sampel B adalah 13,6 % dan untuk sampel C adalah 21,7%.

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Drug is very important for human being. It can help reduce pain and cure diseases. However consumption of drug must follow its existing regulations. The release of a drug can be manipulated through a model of the drug. The main objective of this research is to obtain a valid model of a drug consist of paracetamol and chitosan matrix. A valid model can be achieve if the result from experiment and simulation show a slightly difference values. Also, the profile concentration of paracetamol in solid, paracetamol in liquid and water will be observe and analyze correctly. The result of the research is profile release of paracetamol for 25 minutes. And it shows the percent release of paracetamol for 25 minutes. The matrix needs approximately 7 hours to release paracetamol inside the matrix, with parameters are: the coefficient of drug dissolution is 1x10-9 ml2/mol2 h and diffusion coefficient of paraetamol in liquid is 5 x 10-8 m2/s. From the experiment, paracetamol loading are 2,66%, 5,65% and 7,45%. The drug release will occurred in buffer solution, which is water with pH 7,4. It was assumed that only paracetamol is released to the water, chitosan is assumed not release to the water, therefore the water must have pH 7,4. After 25 minutes percent release of sample A is 14,6 %, for sample B is 13,6 % and for sample C is 21,7 %."