Herbal teas, which are a rich and diverse source of polyphenols, have been widely consumed due to their association with various health benefits. Preparation techniques can significantly affect the ...level of polyphenols in a cup of tea. Thus, this study investigated the impact of different preparation techniques, including brewing time in hot water, microwave-assisted extraction with cold and hot water (cold and hot MAE) for both radiation time and power, and laboratory testing condition on extractability of polyphenols in infusion from a teabag. The results showed that brewing time using hot water significantly affected the extractability of polyphenols and antioxidant activity. Cold and hot MAE conditions also significantly affected the extractability of polyphenols and antioxidant activity from a teabag infusion. Hot brewing at 7 min and cold MAE at full power with second boiled (1.93 min on and 1 min off radiation) are recommended for the preparation of herbal tea from a teabag, as these conditions had comparable extractability of polyphenols and antioxidant activity in comparison with other preparation techniques. There are over 20 major chromatogram peaks, of which 7 were identified as gallic acid, catechin, caffeic acid, ferulic acid, epicatechin gallate, quercetin, and kaempferol, revealing potential health benefits of this herbal tea.
Provides information on using Ubuntu Linux from the command line, covering such topics as using the shell, working with files, backing up data, accessing network resources, and handling remote system ...administration.
Linux Bible Negus, Christopher
2015, 2015-04-22, 2015-04-16
eBook
The industry favorite Linux guide, updated for Red Hat Enterprise Linux 7 and the cloud Linux Bible, 9th Edition is the ultimate hands-on Linux user guide, whether you're a true beginner or a more ...advanced user navigating recent changes. This updated ninth edition covers the latest versions of Red Hat Enterprise Linux 7 (RHEL 7), Fedora 21, and Ubuntu 14.04 LTS, and includes new information on cloud computing and development with guidance on Openstack and Cloudforms. With a focus on RHEL 7, this practical guide gets you up to speed quickly on the new enhancements for enterprise-quality file systems, the new boot process and services management, firewalld, and the GNOME 3 desktop. Written by a Red Hat expert, this book provides the clear explanations and step-by-step instructions that demystify Linux and bring the new features seamlessly into your workflow. This useful guide assumes a base of little or no Linux knowledge, and takes you step by step through what you need to know to get the job done. Get Linux up and running quickly Master basic operations and tackle more advanced tasks Get up to date on the recent changes to Linux server system management Bring Linux to the cloud using Openstack and Cloudforms Linux Bible, 9th Edition is the one resource you need, and provides the hands-on training that gets you on track in a flash.
This updated bestseller from Linux guru Chris Negus is packed with an array of new and revised material As a longstanding bestseller, Ubuntu Linux Toolbox has taught you how to get the most out ...Ubuntu, the world's most popular Linux distribution. With this anticipated new edition, Christopher Negus returns with a host of new and expanded coverage on tools for managing file systems, ways to connect to networks, techniques for securing Ubuntu systems, and a look at the latest Long Term Support (LTS) release of Ubuntu, all aimed at getting you up and running with Ubuntu Linux quickly. * Covers installation, configuration, shell primer, the desktop, administrations, servers, and security * Delves into coverage of popular applications for the web, productivity suites, and e-mail * Highlights setting up a server (Apache, Samba, CUPS) * Boasts a handy trim size so that you can take it with you on the go Ubuntu Linux Toolbox, Second Edition prepares you with a host of updated tools for today's environment, as well as expanded coverage on everything you know to confidently start using Ubuntu today.
Get all the essentials of the major changes in Fedora 14 Veteran authors Christopher Negus and Eric Foster-Johnson provide you with a thorough look at the skills needed to master the latest version ...of Fedora and Red Hat Linux. Their step-by-step instructions walk you through a painless and simple installation of Linux; then you'll explore the major changes to the release of Fedora 14 while also revisiting the previous version so you can see what features have been updated and revised. Focuses on the essentials of the updated and new elements of Fedora Linux 14 Addresses using packagekit, running Windows apps, scanning images, and installing over the Internet Touches on how to work in a Linux office with MSFT office compatible office apps Covers new material on zarafa, xenner, deja dup, and more Features a DVD that includes the latest distribution of Fedora Linux as well as a bootable Fedora LiveCD Fedora 14 includes many important updates and additions -- this book gets you up to date on the most essential changes.
Learn how to use BSD UNIX systems from the command line with BSD UNIX Toolbox: 1000+ Commands for FreeBSD, OpenBSD and NetBSD. Learn to use BSD operation systems the way the experts do, by trying ...more than 1,000 commands to find and obtain software, monitor system health and security, and access network resources. Apply your newly developed skills to use and administer servers and desktops running FreeBSD, OpenBSD, NetBSD, or any other BSD variety. Become more proficient at creating file systems, troubleshooting networks, and locking down security.
The perfect companion for mastering the latest version of FedoraAs a free, open source Linux operating system sponsored by Red Hat, Fedora can either be a stepping stone to Enterprise or used as a ...viable operating system for those looking for frequent updates. Written by veteran authors of perennial bestsellers, this book serves as an ideal companion for Linux users and offers a thorough look at the basics of the new Fedora 12.Step-by-step instructions make the Linux installation simple while clear explanations walk you through best practices for taking advantage of the desktop interface. You'll learn how to use the Linux shell, file system, and text editor. Plus, the authors describe key system administration skills, such as setting up users, automating system tasks, backing up and restoring files, and understanding the latest security issues and threats.Coverage includes:An Overview of FedoraInstalling FedoraGetting Productive with the DesktopUsing Linux CommandsAccessing and Running ApplicationsPublishing with FedoraMusic, Video, and Images in LinuxUsing the Internet and the WebUnderstanding System AdministrationSetting Up and Supporting UsersAutomating System TasksBacking Up and Restoring FilesComputer Security IssuesConnecting to the InternetSetting Up Printers and PrintingSetting Up a File ServerSetting Up a Mail ServerSetting Up an FTP ServerSetting Up a Web ServerSetting Up an LDAP Address Book ServerSetting Up a DHCP ServerSetting Up a MySQL Database ServerMaking Servers Public with DNSSetting Up Virtual ServersWhether a new or power user of Fedora, you'll benefit fromFedora Bible 2010 Edition: Featuring Fedora Linux 12.Note:CD-ROM/DVD and other supplementary materials are not included as part of eBook file.
* Detailed installation instructions and step-by-step descriptions of key desktop and server components help new users get up and running immediately * Descriptions of the various distributions from ...people in the Linux community help users zero in on the best Linux for their needs * The perfect migration guide for Windows and Macintosh desktop users who want to switch to Linux, as well as for systems administrators who want to set up secure, fully functioning server systems * Covers Linux embedded systems, firewalls, and routers plus desktops and servers * Includes Fedora Core 3, Debian Linux, SUSE Linux, Knoppix, Gentoo Linux, Slackware Linux, Mandrake Linux, Damn Small Linux, and a Linux firewall and router on DVD
