[PDF] A Lecture Demonstration Acid-Catalyzed Hydrolysis of Starch

Chem 11 Lab Manual

Qualitative analysis of Carbohydrates II

Experiment 1 : Sucrose Hydrolysis Test. Objective: Concentrated hydrochloric acid (HCl) ... Starch forms deeply blue color complex with iodine.

A Lecture Demonstration Acid-Catalyzed Hydrolysis of Starch

Hydrolysis of starch can he demonstrated by adding a small amount of iodine to the polysaccharide then heating to 10O0C in the presence of an acid catalyst. As 

Hydrolysis of Glycogen

In the case of hydrolysis produced by acids the final solution causes causes. Iodine causes. Glycogen opalescent precipitation. A red colour

Starch Agar Protocol

Acid-catalyzed hydrolysis of starch

in the presence of an acid catalyst. As hydrolysis progresses the characteristic blue-black color of the starch-iodine com- plex fades leaving a solution 

FAT ASSOCIATED WITH STARCH.

Hydrolysis of corn starch freed of extraneous fat liberates fatty acids. the presence ofdark yellow particles when the starch stained with iodine

Experiment 11 – Carbohydrates

Starch pectin

1 BCH302 [Practical]

The Iodine/Potassium Iodide Test: for polysaccharides. Heating starch solution in acid medium hydrolysis the glycosidic bonds giving many free glucose.

Indonesian Journal of Chemical Research

The solution was tested with iodine solution every 2 hours to control the starch hydrolysis time. Once cool the solution is neutralized.