Y. Pranoto
Faculty of Agricultural Technology, Gadjah Mada University Jl. Flora Bulaksumur Yogyakarta 55281

Published : 4 Documents
Articles

Found 4 Documents
Search

THE EFFECTS OF ANIMAL AGE AND ACETIC ACID CONCENTRATION ON PIGSKIN GELATIN CHARACTERISTICS

Journal of the Indonesian Tropical Animal Agriculture Vol 37, No 3 (2012): (September)
Publisher : Diponegoro University

Show Abstract | Original Source | Check in Google Scholar

Abstract

This research was aimed to study the influence of animal age and concentration of the acetic acidsolution on physical and chemical properties of pigskin gelatin. The experiment used CompletelyRandomized Design (CRD) with two factors. The first factor was animal age consisted of 3 levels (5, 7and 9 months). The second factor was concentration of acetic acid solution consisted of 3 levels (2, 4and 6 percents). The result showed that animal age had significant effect (P<0.01) on the yields, gelstrength, viscosity, protein content and pH value but interaction of animal age and concentration ofacetic acid had no significant effect (P>0.05) on the yields, gel strength, viscosity, protein content andpH value. It was concluded that pigskin gelatin from ages of 5, 7 and 9 months and acetic acidconcentration of 2, 4 and 6% had similar characteristics to the commercial gelatin, but the optimumproduction of gelatin was combination of pigskin gelatin from 7 months and of 2% acetic acid.

Evaluasi Mikrobiologi dan Sifat Mekanik Kateter Penghisap yang Dipakai Ulang: Perbandingan antara Dua Prosedur Pemrosesan

Sari Pediatri Vol 12, No 5 (2011)
Publisher : Badan Penerbit Ikatan Dokter Anak Indonesia (BP-IDAI)

Show Abstract | Original Source | Check in Google Scholar

Abstract

Latar belakang. Pemakaian ulang kateter penghisap telah biasa dilakukan di Indonesia, namun sejauh inibelum ada penelitian mengenai sterilitas dan keamanannya.Tujuan. Mengevaluasi sterilitas, sifat mekanik, dan permukaan serta kualitas matriks kateter penghisap yangdipakai ulang setelah diproses dengan dua jenis prosedur pengolahan yang berbeda.Metode. Kateter penghisap yang dipakai ulang setelah diproses dan disterilisasi menggunakan gas etilen oksida(EO), atau menggunakan sterilisasi pemanasan kering (kelompok B). Semua sampel dibersihkan dan didesinfeksidengan prosedur yang hampir sama. Kateter penghisap baru dipakai sebagai standar. Mikroba yang tumbuh padamedium kultur diidentifikasi. Semua sampel menjalani uji tarik dan kompresi. Analisis mikrostruktur dilakukandengan menggunakan mikroskop elektron (SEM) dan energi-dispersif spektroskopi sinar-X (EDX).Hasil. Kultur positif bakteri komensal pada 6 di antara 15 sampel pada kelompok A, dan 6 dari 17 sampelpada kelompok B. Terdapat perbedaan yang bermakna dari sifat mekanik sampel penelitian (p<0,05).Sampel dari kelompok A memiliki kekuatan yang paling rendah. Sampel dari kedua kelompok penelitianmengalami perubahan kelenturan dan keuletan dibanding standar. Analisis mikrostruktur menggunakanXPS dan EDX pada permukaan dalam ujung kateter penghisap yang dipakai ulang menunjukkan degradasikomponen matriks. Analisis SEM mendeteksi beberapa partikel tambahan dan rekahan. Analisis EDX padapartikel tambahan menunjukkan pengayaan sinyal na+ dan ca++. Secara keseluruhan, didapatkan tandakontaminasi serta kerusakan material.Kesimpulan. Kedua metode pengolahan ulang kateter penghisap memberikan hasil sterilitas yang sebanding.Sampel yang dipakai ulang mengalami penurunan kekuatan, menjadi lebih lentur, dan tidak ulet.Ditemukan tanda kontaminasi, perubahan sifat permukaan dan kerusakan matriks dari kateter penghisapyang dipakai ulang.

Pengaruh Umur Potong dan Konsentrasi Larutan Asam Asetat terhadap Sifat Fisik dan Kimia Gelatin Kulit Babi

Sains Peternakan: Jurnal Penelitian Ilmu Peternakan Vol 10, No 1 (2012): Sains Peternakan
Publisher : Universitas Sebelas Maret (UNS)

Show Abstract | Original Source | Check in Google Scholar

Abstract

This research was aimed to study the influence of animal age and acetic acid solution concentration on physical and chemical properties. The experiment used Randomized Complete Design (RCD) with two factors and three replicates. The first factor was animal age consisted 3 levels (5, 7 and 9 months). The second factor was concentration of acetic acid solution consisted of 3 levels (2, 4 and 6 percents). The result showed that interaction of animal age period and concentration of acetic acid had no significant effect on gel strength, moisture content, ash content and fat content of pig skin gelatin. It was concluded that pigskin gelatin from ages of 5, 7 and 9 months and concentration acetic acid 2, 4 and 6 % had similar physical and chemical peoperties with the commercial gelatin.

Properties of endotracheal tubes reprocessed by two procedures

Paediatrica Indonesiana Vol 51 No 2 (2011): March 2011
Publisher : Indonesian Pediatric Society

Show Abstract | Original Source | Check in Google Scholar

Abstract

Background Reusing endotracheal tubes (EITs) has been performed in Indonesia with no evidence of its safety. Objective To evaluate sterility, as well as the mechanical, surface, and matrix properties of reused EITs following 2 different reprocessing procedures.Methods Reused EITs were cleaned and disinfected, then sterilized by ethylene oxide gas sterilization (group A) or dry heat sterilization (group B). New EITs were used as the standard for comparison. Microbes were identified and microbial counts were determined as colony forming units (CFUs). Evaluation of mechanical properties was perfonned by a Universal Testing machine. All samples underwent tensile and compression tests.Load defonnation curves were recorded from F max and strain at F max. Microstructure analysis was done using X􀁅ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX).Results Positive cultures of commensal bacteria were found in 2/12 samples in group A, and 5/17 samples in group B. T here was no statistically significant difference between them (P =0.07). Pseudomonas aeruginosa or other common pathogens were not found. Samples from both groups showed equal flaccidity, compared to the standard. Surface microstructure analysis of reused EITs With XPS and EDX showed degradation of the matrixcomponent. SEM analysis detected some large particles and fissures. EDX analysis on the large particles detected sodium and calcium signals. Altogether, signs of contamination and material damage were very strong.Conclusion Both reprocessing methods of reused EITs gave comparable results on sterility and mechanical behavior, but reprocessing may cause decreased surface and matrix quality.