Chemical Test Carbohydrate : The Appropriate Method to Examine Carbohydrate
The qualitative or quantitative technique which is implemented to detect the existence or to evaluate a chemical compound and or chemical group by using a reactant is a chemical test. To chemical test carbohydrate, there are a number of tests that can be conducted to determine if a sample contains carbohydrates and if it does, there are further tests that can be carried out to classify and identify it. The Molisch Test, The Iodine/Potassium Iodide Test, Benedict’s Test, Barfoed’s Test, Seliwanoff’s Test and Bial’s Test are chemical test carbohydrate.
The Molisch’s Test is a sensitive chemical test carbohydrate which was discovered by the Austrian botanist Hans Molisch. Sulfuric acid desiccates the carbohydrate which results in the formation of an aldehyde which is compacted with two molecules of phenol that results in a purple or red colored compound. Next, the Molisch’s reagent,naphthol dissolved in ethanol, is mixed with the sample in a test tube. After it has been mixed, concentrated sulfuric acid, a small amount, is slowly added along the sides of the test tube without mixing to form a bottom layer. The appearance of a purple ring at the border between the acid and the test layers signal a positive reaction.
Chemical test carbohydrate will give a rapid positive test result for carbohydrates, monosaccharides while disaccharides and polysaccharides react slower. The Barfoed’s Test is a chemical test carbohydrate that detects the presence of monosaccharides. One ml of the sample solution must be added together with 3 ml of Barfoed’s reagent, an acetic acid solution and a solution of acetetate cupric. Heat the solution in a boiling water bath for three minutes and if a formation of a reddish precipitate appears, it tests positive for monosaccharides.
Named after the American chemist Stanley Rossiter Benedict,the Benedict’s test is a chemical test carbohydrate used as a test for the presence of reducing sugars. Place one ml of the sample solution in a test tube and add 2 ml of Benedict’s reagent which is a solution of sodium citrate and sodium carbonate that is mixed with a solution of copper sulfate. Once the solution is heated in a boiling water bath for three minutes, a reddish precipitate should form within three minutes if it tests positive. Chemical test carbohydrates are mainly conducted by researchers to study the various reactions of carbohydrates with the reagents used to classify and identify its compounds.
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Nutrition for Kids - Sense Tips for Raising Healthy Kids
Every parent cares about what his/her child eats, since nutrition is the key element for the harmonious growth of any human being. Kids tend to disagree with grown-ups in terms of diet too, just as it happens with so many other things. It takes a lot of work, patience and diplomacy to actually satisfy good nutrition for kids. Here are a few tips for your kid’s main meals:
Breakfast
Good energy levels come with a balanced nutrition. Breakfast is supposed to provide your child with enough nutrients to get him/her through the intense activities of the morning. A donut will never be enough. Some breakfast drinks would be a lot more appropriate under the circumstances. Wheat germs, apple juice and orange juice make a great combination. Other food choices here include whole-grain muffins, hard-boiled eggs and finger food vegetables.
Lunch
This is where you have to be creative. Nutrition for kids is problematic because children can throw away, trade or give food away. This usually happens when the child is too bored with what you put in the lunch box. You can make the child look forward to lunch, and creativity helps a lot. Tuna fish and salmon with some vegetables are a good combination. Some children prefer peanut butter sandwiches with chopped dates, raisins, nuts or bacon; cut the sandwiches into nice shapes and you’ll see how good they taste.
Snacks
When children come back from school, they are certainly in need of an energy boost. Sweets may seem like a good idea, but they are the worst choice possible. Dried fruit are great for the occasion combined with sunflower seeds, dates, coconut shavings and pretzel sticks. Popcorn can also make a great snack. And the same can be said about whole wheat crackers with cheese.
Dinner
Dinner is the best time to make nutrition for kids complete, because it allows you to create a balanced diet. Put different dishes on the table and let your child choose the one he/she likes. If the food seems attractive and interesting, children will eat it with pleasure.
There are many ways to manage nutrition for kids adequately. You just need to be well informed and ready to cook decent meals for the family. Home food has all the premises of providing all the nutrients necessary for body growth, unlike highly processed or junk food.