Determining the sugar concentration of food samples is very important especially in industries where quality control is monitored. One method to determine the sugar concentration of reducing sugars is by heating with 3‚5 dinitrosalicylic acid(DNS) which produce a red-brown product Miller(1959)The reaction is direct‚thus the method is preferred over the Benedict’s test method. The concentration of the coloured complex can be determined with the spectrophotometer at Absorbance 540.The sugar concentration
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The production of reducing sugars by acid of carbohydrate cereals powder‚ jams (total sugar content) and jams (reducing sugar content) were performed in order to study reducing sugar production. The study involved hydrolysis carbohydrate cereals powder and jams by immersing in boiling water at environmental temperature. Acid hydrolysis was carried out through reflux boiling for 20 minutes with 10ml 0f 1.5M concentrations of diluted sulphuric acid. Reducing sugars concentrations were determined
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Testing for reducing sugars‚ non-reducing sugars‚ starch‚ lipids and proteins in unknown substances: Our aim: was to find out which substances from our five samples have reducing sugars present to determine what they may be for example; they could be monosacchrides or disaccharides. This was carried out by using Benedict’s test. To find out which substances from our five samples were non-reducing sugars‚ since some disaccharides are reducing sugars and this would be carried out by using Benedict’s
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Title : FOOD TESTS Aim : To determine whether given unknown solutions A‚B‚C‚D‚E‚F and G contain Reducing/NonReducing Sugars‚ Lipids‚ Proteins or Starch. Apparatus/Materials: - Bunsen burner - Solutions A‚ B‚ C‚ D‚ E‚ F and G (unknown) - Measuring Syringes - Stirring Rod - Beakers - Test tubes (7)plus holder and tray - Copper sulphate solution (CuSO4) - White dropping ray - tripod stand and mesh -stopwatch - Biuret͛s solution - Sodium Hydroxide solution (NaOH) (or Potassium Hydroxide
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proteins‚ starches‚ and reducing sugars were present in the solutions we were provided with. The purpose of the lab was to allow us to have the opportunity to view the positive and negative reactions of the solutions we used‚ also to understand what that meant. The reagents we used allow us to detect whether or not there was a reducing sugar‚ starch‚ or protein present in the solutions. From what I knew previous to this experiment would be that if a substance contains a reducing sugar it will have a positive
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What are DNS and DHCP‚ why is it needed and what overhead can it create for an IT Administer. These are the questions I set out looking for to help provide a better understanding of these roles in a Server. By understanding them better it can help to create a knowledge base to be successful in IT. First we will looking in DNS this is short for Domain Name System‚ in a nutshell it provides a meaningful host name with network address (Windows server 2008‚ 2008). As we have learned all computers use
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Edward Gray 03/23/2013 NT1330 Assignment 1 DNS and DHCP can make a system administrator’s life simpler and easier. Fortunately‚ the protocols are so flexible that they can be implemented either together or separately depending on the size and configuration of your enterprise network. So whether you have 5 or 5000 computers in your network this would be justifiable action because of the following reasons: Looking up IP addresses can be a nightmare if you have
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Active-Directory Integrated DNS Servers and what type to use. One of the branch offices is very small (5 users) and has very slow network connectivity. Do I need a DNS Server and‚ if so‚ which type of zone should it host? The second branch office is much larger (about 30 users) and has better network connectivity. Does this office need a DNS Server and‚ if so‚ what type of zone would you recommend? Thank you‚ Junior Admin Good afternoon Junior Admin‚ You want to make sure that you are using your resources wisely
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Name Systems (DNS)‚ a form of database that translates Internet domain and host names into Internet Protocol (IP) addresses. DNS services play a vital role in the Internet: every time a user visits a website‚ chats with friends‚ or sends email‚ his computer performs DNS look-ups before setting up a connection. Complex web pages often require multiple DNS look-ups before they start loading‚ so users’ computers may perform hundreds of DNS look-ups a day. Most users are unaware of DNS‚ since Internet
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use Google Public DNS When you use Google Public DNS‚ you are changing your DNS "switchboard" operator from your ISP to Google Public DNS. In most cases‚ the IP addresses used by your ISP’s domain name servers are automatically set by your ISP via the Dynamic Host Configuration Protocol (DHCP). To use Google Public DNS‚ you need to explicitly change the DNS settings in your operating system or device to use the Google Public DNS IP addresses. The procedure for changing your DNS settings varies according
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