ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskDAO.inc.php At line: 46 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskDAO.inc.php At line: 46 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskDAO.inc.php At line: 46 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskDAO.inc.php At line: 46 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskDAO.inc.php At line: 46 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskDAO.inc.php At line: 46 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskDAO.inc.php At line: 46 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskDAO.inc.php At line: 46 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskDAO.inc.php At line: 46 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/scheduledTask/ScheduledTaskHelper.inc.php At line: 113 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/core/Core.inc.php At line: 95 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/core/Core.inc.php At line: 95 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/lib/pkp/classes/core/Core.inc.php At line: 95 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/plugins/generic/usageStats/UsageStatsPlugin.inc.php At line: 345 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
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ojs2 has produced an error Message: WARNING: Cannot modify header information - headers already sent by (output started at /home/vjs/vjs2483/lib/pkp/classes/core/PKPApplication.inc.php:381) In file: /home/vjs/vjs2483/lib/pkp/classes/template/PKPTemplateManager.inc.php At line: 343 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
TÁCH CHIẾT, TINH SẠCH VÀ NGHIÊN CỨU ĐẶC ĐIỂM CỦA KHÁNG SINH TỪ XẠ KHUẨN STREPTOMYCES SP. QN63 CHỐNG STAPHYLOCOCCUS AUREUS NHỜN KHÁNG SINH | Minh Lam | Vietnam Journal of Science and Technology ojs2 has produced an error Message: WARNING: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/cache/t_compile/%%31^31B^31BC1435%%googlescholar.tpl.php At line: 35 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB
ojs2 has produced an error Message: WARNING: strftime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. In file: /home/vjs/vjs2483/cache/t_compile/%%31^31B^31BC1435%%googlescholar.tpl.php At line: 35 Stacktrace: Server info: OS: Linux PHP Version: 5.6.40 Apache Version: Apache/2.4.6 (CentOS) DB Driver: mysql DB server version: 5.5.68-MariaDB

TÁCH CHIẾT, TINH SẠCH VÀ NGHIÊN CỨU ĐẶC ĐIỂM CỦA KHÁNG SINH TỪ XẠ KHUẨN STREPTOMYCES SP. QN63 CHỐNG STAPHYLOCOCCUS AUREUS NHỜN KHÁNG SINH

Dương Minh Lam, Đặng Ngọc Quang, Nguyễn Thị Hà

Abstract


Xạ khuẩn Streptomyces sp. QN63 phân lập được từ đất rừng ngập mặn Yên Hưng, Quảng Ninh có khả năng kháng mạnh Staphylococcus aureus nhờn kháng sinh. Kháng sinh do chủng xạ khuẩn này sinh ra đã được đánh giá là có khả năng chịu nhiệt. Trong nghiên cứu này, chúng tôi đã sử dụng các phương pháp vi sinh và hóa sinh để xác định phổ kháng khuẩn và nấm của kháng sinh do Streptomyces sp. QN63 sinh ra và các quá trình tách chiết, tinh sạch kháng sinh trên. Kết quả cho thấy kháng sinh nghiên cứu kháng được cả hai loại vi khuẩn Gram âm và Gram dương, nhưng không biểu hiện hoạt tính kháng lại các nấm kiểm định nghiên cứu. Kết quả phân tích phổ cộng hưởng từ hạt nhân H và C13 chỉ ra rằng đây là một kháng sinh peptide vòng. So sánh với ngân hàng dữ liệu các hợp chất có hoạt tính, kháng sinh này có thể là một kháng sinh mới.

Keywords


Streptomyces sp. QN63, Staphylococcus aureus, nhờn kháng sinh, kháng sinh mới



DOI: https://doi.org/10.15625/0866-708X/51/5/9621

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Bioteknologi Agrikultur

Index: Google Scholar; Crossref; VCGate; Asean Citation Index

Published by Vietnam Academy of Science and Technology