Tujuan dari penelitian ini adalah untuk melihat kemampuan fisik dan cemaran mikroba dari pati sagu hasil modifikasi menggunakan propilena oksida dengan metode hidroksipropilasi. Rancangan penelitian yang digunakan adalah rancangan acak lengkap dimana variabel tetap adalah pati sagu termodfikasi propilena oksida. Sedangkan variabel tidak tetap menggunakan sodium tripolyphosphat (STPP) pada konsentrasi 0,3%;; 0,5%;; 0,6% (b/b) dan karagenan pada konsentrasi 3%;; 2% (b/b). Proses ini dilakukan dengan dua tahapan yaitu dengan penambahan plasticizer (gliserol) dan tanpa plasticizer dengan konsentrasi 2% (v/v). Sebagai pelarutnya digunakan aquadest dengan jumlah seluruhnya adalah 100% (b/v). Hasil pengujian sifat fisik pada proses uji FTIR menunjukkan adanya spektrum pada wilayah 3000-2500 cm-1 yang merupakan spesifikasi dari propilen oksida. Sedangkan untuk uji kelarutan pati sagu terhadap air, larutan asam, dan serupa cairan dalam usus telah memenuhi standar sesuai Farmakope Indonesia ed.IV. Pengujian cemaran mikroba pada jenis bakteri yang bersifat patogen yaitu E. coli, Salmonella Sp, dan Staphylococcus aureus memberikan hasil uji negatif, sedangkan untuk nilai angka lempeng total (ALT) cangkang kapsul pati sagu menunjukkan nilai 1,5x10 2 cfu/g.
The purpose of this research was to analyze the physical and chemical properties of sago starch edible film (Metroxylon sagu Rottb) as capsule shells material. The research was started with the extraction of the rumbia starch, and was followed with the production of edible film added with modified carrageenan concentrations (20% and 30% w/w) to the main compound. Organoleptic test showed that the color and odor of the films were normal. Water content of wet sago and dry sago was 12.55%, and 5.38%, respectively. Although the addition of carrageenan increased the water content but still corresponded with SNI gelatin quality standard with a maximum of water content of 16%. The ash content of fresh sago and dry sago was 0.36% and 1.09%, respectively, and the content increased significantly with the addition of carrageenan. The pH of all varied samples was 5.5 – 7.0, and the pH was in accordance with SNI. Meanwhile, the heavy metal content of the samples measured by means of AAS was negative. Based on viscosity testing withBrookfield method, high carrageenan concentration led to low viscosit. tensile strength test based on ASTM D 882-2002 gave positive results for dry sago (21.05 kg/cm2) whereas fresh sago with modified 20% and 30% carrageenan had tensile strength of 5.33 kg/cm2 and 18.18 kg/cm2, respectively. The results showed that sago starch had the potential as a raw material for producing soft capsules by modified composition to enhance physical and mechanical properties in order to meet the quality standard of edible film.
Review xanthan gum: produksi dari substrat biomassa ….. I Dewa Gede Putra Prabawa, dkk Review xanthan gum: produksi dari substrat biomassa, variabel efektif, karakteristik dan regulasi serta aplikasi dan potensi pasar Review of xanthan gum: production from biomass substrates, effective variable, characteristics and regulations, applications and market potential
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