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KARAKTERISASI SIFAT-SIFAT FISIK DAN MEKANIK EDIBLE FILM PATI GANYONG (CANNA EDULIS KERR.) Wijoyo, Arif; Pranata, F. Sinung; Atmodjo, P. Kianto
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 9, No 3 (2004): October 2004
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (426.099 KB) | DOI: 10.24002/biota.v9i3.2912

Abstract

This research was carried out in order to reveal ganyong starch?s potential as a major ingredient of edible film, to understand the optimum concentration of ganyong starch and palmitic acid in the making process of edible film and to study their physical and chemical characteristics. The research has two stages, which were the starch preparation, and edible film preparation by using various concentrations of ganyong starch (1, 2, 3, and 4 % w/v) and palmitic acid (1, 2, 3, and 4% w/w). First research stage revealed that ganyong starch has a potential as a major ingredient of edible film because of its high amylose content (32.53% on dry basis). The next stage of the research showed that the optimum ganyong starch concentration of edible film was 2% (w/v). This concentration gives the WVTR (Water Vapor Transmission Rate) measurement of 11.86 (g. mm/m2. hour), film elongation of 2.26%, tensile strength of 3.29 Kpa, and film thickness of 0.0754 mm. The optimum concentration of palmitic acid was 4% (w/v). This results in the WVTR (Water Vapor Transmission Rate) measurement of 7.99 (g. mm/m2. hour), film elongation of 1.24%, tensile strength of 3.58 Kpa, and film thickness of 0.087 mm.
SKRINING SENYAWA ANTIBAKTERI DARI BEBERAPA JENIS RUMPUT LAUT COKLAT (PHAEOPHYCEAE) DARI PANTAI DRINI, DAERAH ISTIMEWA YOGYAKARTA Sidharta, Boy R.; Atmodjo, P. Kianto; Mursyanti, E.
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 13, No 1 (2008): February 2008
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (276.552 KB) | DOI: 10.24002/biota.v13i1.2614

Abstract

This present research was trying to determine the antibacterial compounds from several brown seaweeds from Drini beach. Previous studies have shown that several seaweeds from this beach were proved to have antibacterial activities. Therefore, it needs to be studied whether the extracts of several brown seaweeds utilizing three (3) kinds of extraction solutions such as aquadest, ethanol, and hexane, will also show antibacterial activities. The three solutions were chosen based on the difference of polarization activities. Research design utilized was randomized complete block design and the data compiled was treated by Anova and followed with Duncan?s Multiple Range Test (DMRT) with degree of confidence 95%. Microbes utilized in this research were Escherichia coli and Bacillus subtilis, that were common pathogenic bacteria known to human and animals. The research found six (6) species of brown seaweed during the research period, i.e. Sargassum dotyi, S. ohnoi, S. abbottiae, S. bataanense, Caulerpa prolifera, and Laurencia papillosa. This present research also revealed that ethanol was the best extraction solution to extract the secondary metabolite from the brown seaweeds found. The best antibacterial activities was shown by S. dotyi extract?s to inhibit the two (2) microbes used in the research compared to other seaweed extracts. However, this result was still low and significantly different compare to pure antibiotics utilized, i.e. penicillin and streptomycin.
KEMAMPUAN MIKROORGANISME EFEKTIF DALAM MENGOLAH LIMBAH CAIR PABRIK SPIRITUS Lestari, H. N.; Atmodjo, P. Kianto; Sidharta, B. R.
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 13, No 3 (2008): October 2008
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (60.183 KB) | DOI: 10.24002/biota.v13i3.2575

Abstract

Proses produksi suatu industri senantiasa menghasilkan limbah yang harus diolah dengan baik agar tidak membahayakan lingkungan. Pabrik spiritus ?X? di Yogyakarta telah mengolah limbah cairnya secara fikokimiawi, namun hasilnya masih kurang baik. Karakteristik limbah pabrik ini adalah berbentuk cair, berwarna hitam, bau, keruh, kandungan BOD 2.978 mg/l dan COD 103.433 mg l, sehingga nilainya sangat jauh di atas baku mutu (Kepmen: 03/men LH/I/1998). Untuk itu perlu dilakukan usaha-usaha mengolah lebih lanjut agar mutu limbah semakin mendekati baku mutu. Salah satu usahanya adalah mengolah lebih lanjut dengan metode biologi.
Mempelajari mahluk hidup dan Kehidupannya Secara Hidup dan Dinamis (Resensi Buku) Atmodjo, P. Kianto
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 11, No 1 (2006): February 2006
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (142.884 KB) | DOI: 10.24002/biota.v11i1.2825

Abstract

Ooo, ternyata mahluk hidup itu begitu menarik?!, Ooo..demikian tho proses terjadinya flu burung, atau oo begitu ya penyebabnya, mengapa saat ini bermunculan penyakit baru, dan oo.. ini lah akibatnya kalau lingkungan hidup rusak! Ini semua kesan yang akan kita peroleh kala kita membaca buku ?Life ?.
Pengaruh Ragi dan Waktu Fermentasi terhadap Produksi Alkohol Secara Fermentasi Berbahan Baku Gaplek Ubi Kayu (Manihot utillisima) Atmodjo, P. Kianto
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 13, No 1 (2008): February 2008
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (82.848 KB) | DOI: 10.24002/biota.v13i1.2622

Abstract

The research of the ragi and the fermentation time effect on alcohol production by cassava gaplek has been done. The aim of this research were to find out the best time fermentation and trade mark commercial ragi to produce alcohol. Time fermentation were 1 and 2 weeks. The ragi trade marks were NKL and MK. The result showed that the alcohol production was 15-17% in a week, and 18-20% in two week fermentation. The alcohol quantity which produced by both NKL and MK ragi were not significantly different.
Penelitian Mikrobiologi Menjadi Mudah dan Menarik Atmodjo, P. Kianto
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 12, No 2 (2007): June 2007
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (334.274 KB) | DOI: 10.24002/biota.v12i2.2670

Abstract

Mau tahu apakah suatu sabun betul-betul berperan sebagai antispetik? Mau tahu apakah suatu bahan makanan (kalengan) mengandung mikrobia atau tidak? Mau mengenal keanekaragaman mikrobia dari berbagai sumber lingkungan? Mau mempelajari teknik rekayasa mikrobia untuk dijadikan mikrobia baru? Semua itu dapat diperoleh dalam buku ?Bensen?s Microbiological Applications?.
Pola Pertumbuhan dan Produksi -Amilase Bacillus amyloliquefaciens pada Substrat Pati Jagung dengan Variasi pH Awal Media dan Waktu Inkubasi Wahyuningsih, Sisilia Sri; Mursyanti, Exsyupransia; Atmodjo, P. Kianto
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 9, No 2 (2004): June 2004
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (319.385 KB) | DOI: 10.24002/biota.v9i2.2895

Abstract

The aims of this study  were to identify the growth curve of  B. amyloliquefaciens on  corn-starch and non corn starch addition media,  number of cells  and production of a-amylase on variety initial pH during the stationary phase. The growth curve of B. amyloliquefaciens was made using the water optical density on both  medium which has inoculated by microbes. The experimental design for the a-amylase production was factorial completely randomized design (6 x 3 x 3). There were two factors included in this study i.e. initial  pH of the media ( 5,  5.5,  6,  6.5,  7 and 7.5) and incubation times (16, 18 and 20 hours). The results showed that B. amyloliquefaciens growth curve on medium with corn starch was slower than on medium without corn starch. Production of  a-amylase and number of cells were having similar patterns in all treatments, i.e. increased until optimum pH and incubation time were reached. The number of cells and a-amylase production were optimal at pH 6.5 for 18 hours incubation whereas the number of cells  (about 2.8542 x 108 cells/ml)  and a-amylase production (1.4467 units/ml) were optimal at pH 6.5 for 18 hours  incubation.
Era Emas Biologi Atmodjo, P. Kianto
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 14, No 2 (2009): June 2009
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (23.339 KB) | DOI: 10.24002/biota.v14i2.2692

Abstract

Selamat datang dalam era emas biologi! Setiap hari berita-berita yang berkaitan dengan biologi selalu bermunculan melalui koran harian, mingguan, dan berita-berita yang disiarkan media elektronika. Pemanfaatan biologi untuk bidang industri manufaktur, pertanian, kesehatan, farmasi dan makanan tidak pernah ada habisnya. Hal yang paling hangat adalah pemanfaat teknologi asam deoksi ribonukleat untuk penentuan jati diri teroris yang terbunuh dalam penyergapan di Temanggung apakah Nordin M Top atau bukan, penentuan jati diri korban ledakan bom atau kebakaran, serta penentuan jati diri korban kecelakaan pesawat, merupakan contoh-contoh peran biologi dalam kehidupan bermasyarakat modern, dan inilah yang dimaksud era emas biologi oleh Reece dan Simon dalam pengantar buku Essential Biology With Physiology.