ISSN 1978-3477, eISSN 2087-8575 Volume 10, Number 1, March 2016 High Prevalence of Occult Hepatitis B Infection (OBI) and its Molecular Characteristics among Pregnant Women in Surabaya, Indonesia Detection of Hepatitis B Virus X Gene Mutation from Local Clinical Samples Utilization of Bacillus pumilus and Citrobacter youngae as Flotation Bioreagents in the Microflotation of Chalcopyrite, Pyrite, and Silica H e t e r o l o g o u s E x p r e s s i o n o f a- A m y l a s e f r o m Saccharomycopsis fibuligera R64 and its Tyr401Trp Mutant in Pichia pastoris Comparison of Microbial Pattern Causing Urinary Tract Infection in Female Out and Hospitalized Patients in Jakarta Meilani, Takako Utsumi, Juniastuti, Mochamad Amin, Soetjipto, Yoshitake Hayashi, and Maria Inge Lusida Anita Artarini, Hanary Gaby Jessica, Raden Rini Kartikasari, Catur Riani, and Debbie Sofie Retnoningrum Edy Sanwani, Dita Hidayati, and Siti Khodijah Chaerun Riezki Amalia, Wangsa Tirta Ismaya, Fernita Puspasari, Khomaini Hasan, Toto Subroto, Dessy Natalia, and Soetijoso Soemitro Yeva Rosana, Dwiana Ocviyanti, Anis Karuniawati, and Syadza Rhizky Putri Akhmad 1 9 15 23 30 ISSN 1978-3477, eISSN 2087-8575 Volume 10, Number 1, March 2016 I N D O N E S I A Accredited at level “A” until Februari 2019 No. / /201040 P 4 Patron Siswa Setyahadi, 2020 Chief Editor Debbie S Retnoningrum, 2020 Editorial Board Members Antonius Suwanto, 2020 Brett Neilan, 2020 Dessy Natalia, 2020 Managing Editor Is Helianti, 2020 Astutiati Nurhasanah, 2020 Electronic Editor Iman Rusmana, 2020 Is Helianti, 2020 Business Manager Diana Nurani, 2020 Editorial Office Indonesian Society for Microbiology (Sekretariat PERMI) Room 124/TMC 2 DRN, Puspiptek-Serpong, Tangerang Selatan , Indonesia15314 Phone: +62-21-7560536 ext 7119 Fax: +62-21-7560694 E-mail: microbiology.indonesia@gmail.com URL: http://jurnal.permi.or.id/index.php/mionline Publisher Indonesian Society for Microbiology Published in March, June, September, and December. Subscription Prices for One Year, not including shipping and handling Indonesian Overseas Individual rate (IDR) 1 0 000,- 200 000,-5 Institutional rate (institution or library) (IDR) 240 000,- 400 000,- Bank Bank Mandiri Cabang Menara Thamrin, Jakarta, Acc PERMI; Acc No 103-0002080774 Printed by: CV. Istiqom Print Maggy Thenawijaya Suhartono, 2016 Maria Inge Lusida, 2016 Neung Tiaamroeng, 2020 Norio Kurosawa, 2020 Kartini Kramadibrata, 2020 Diana E Waturangi, 2020 Endang Purwantini, 2020 Raija Laiho, 2016 Wellyzar Sjamsuridzal, 2020 Yuan Kun Lee, 2016 Yaya Rukayadi, 2020 Friedhelm Meinhardt, 2016 Netty Widyastuti Sigit, 2020 GENERAL EXECUTIVE BOARD OF INDONESIAN SOCIETY FOR MICROBIOLOGY 2015-2019 Advisory Board: Prof. Dr. Pratiwi Sudarmono, PhD, Sp.MK; Dr. Mohammad Dimyati; Prof. Dr. Endang Sukara; Prof. dr. Amin Soebandrio, PhD, Sp.MK; Prof. Dr. Ir. Betty Sri Laksmi Jenie, MS; Prof. Dr. Ir. Antonius Suwanto, MSc; Prof. Dr-Eng. Eniya Listiani Dewi, B. Eng, M.Eng; President: Dr. Siswa Setyahadi; Vice President: Prof. Fedik A Rantam, PhD; General Secretary: Diana Nurani, M.Si; Vice General Secretary: Drs. Nuki B Nugroho, M.Si; Treasurer: Dr. Niknik Nurhayati; Dr. Sylva Abraham; Scientific and Publication Committee: Dr. Debbie S. Retnoningrum; Dr. Is Helianti; Dr. Iman Rusmana; Prof. Dr. Marlina, Apt; Prof. Dra. Netty Widyastuti, M.Si; Dr. Ir. Nur Hidayat, MP; Drh. Mahdi Abrar; Dr. Supriyadi; Dr. Astutiati Nurhasanah; Tarwadi, MSc.; Certification Committee: Dr. Ir. Trismilah, M.Si; Dr. Erwahyuni Endah Prabandari; Ir. Dwi Kusuma Indriani, MP.; Dra. Dini Ryandini, M.Si; Dr. Ir. Maman Turjaman, DEA; Dr. Ernawati Giri Rahma; Dra. Harmastini Sukiman, M.Agr; dr. Purwati SpPD, Ph.D; Dr. Wahyu Purbowasito; Organization Advancement and Networking: Dr. Puspita Lisdiyanti; Prof. Dr. Ir. Endang S. Rahayu, MS; Sri Harjati Suhardi, PhD; Lia Yulia Budiarti, MKes; Dr. Chaidir; Dr. Retno Indrawati, drg., M.Si; Alit Pangestu, STP; Promotion and Advocacy Committee: Dra. MG. Isworo Rukmi, M.Kes; Jimmy Hariantono, PhD; Yawarsa; Gianina; Asri Sulfianti, MSi 424-1142-1-PB (1) Cover Depan (6)