how is starch related to the chemistry of apples?
2007-01-28 06:35:42 · 15 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
yep
2007-01-28 06:38:12 · answer #1 · answered by alex 2 · 0⤊ 1⤋
Apples naturally contain a carbohydrate known as starch. As apples ripen, the amount of starch decreases as it turns to sugar. Starch is converted to sugar near the core of the apple first, and next to the skin last. Apples are ripe when most of the starch becomes sugar. An iodine test is a simple way to see whether an apple is ripe.
2007-01-28 06:40:06 · answer #2 · answered by Anonymous · 0⤊ 1⤋
Everything that is made of atoms or molecules is a chemical, or a mixture of chemicals.
The link below talks about the chemistry of apples and starch.
2007-01-28 06:41:16 · answer #3 · answered by morningfoxnorth 6 · 1⤊ 0⤋
In chemistry everything is made of chemicals, which are atoms and molecules. So all matter is chemical. But, in manufacturing the term "chemicals" means a compound that is extracted or produced in a laboratory. So, it depends on if it was a processed starch compound, or just a "food" that is naturally starchy, like potatoes or rice.
2007-01-28 06:40:50 · answer #4 · answered by martin h 6 · 1⤊ 0⤋
The Iodine test is used to test for the presence of starch. Iodine solution - iodine dissolved in an aqueous solution of potassium iodide - reacts with starch producing a deep blue-black color. This reaction is the result of the formation of polyiodide chains from the reaction of starch and iodine. The amylose, or straight chain portion of starch, forms helices where iodine molecules assemble, forming a blue color. The amylopectin, or branched portion of starch, forms much shorter helices on the branches that are dark blue or purple in color. As starch is broken down or hydrolyzed into smaller carbohydrate units, the blue-black color is not produced. Therefore, this test can determine completion of hydrolysis when a color change does not occur. And then you add "without iodine" a few minutes later after I have given my answer. So I guess my answer is redundant. I tried to research for test of starch without iodine but am unable to find it. There are plenty of iodine in my school's chemistry lab
2016-03-29 06:37:12 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Starch is a substance produced by plants. It is the "stored food" of the plants. Plants store starch in various parts of their body, some store in fruits (apple, etc), some store in root (carrot, etc). It is a polymer of several thousand glucose molecules. Potato, rice and corn are very good source of starch.
2007-01-28 06:51:34 · answer #6 · answered by Ali 2 · 0⤊ 0⤋
Depends on your definiton of a chemical. All mater is either a basic element ( items found on the Periodic Table) or is a combination of elements. So anything not found on the periodic table can be defined by its different components and be considered a chemical
Starch is the common name of a material composed of Glucose polymers ; Amylose and Amylopectin. Put that in your Funk and Wagners !
2007-01-28 06:42:39 · answer #7 · answered by George p 1 · 0⤊ 0⤋
no, starch is a carbohydrate
Starch contains a mixture of two molecules: amylose and amylopectin. Usually these are found in a ratio of 30:70 or 20:80, with amylopectin found in larger amounts than amylose.
2007-01-28 06:39:44 · answer #8 · answered by Anonymous · 0⤊ 2⤋
as afr as i know apples are just sugar ,they dont can like anything that has starch in it ,but i guess thats a back woods guess
2007-01-28 06:40:41 · answer #9 · answered by squirley c 2 · 0⤊ 0⤋
Yes, although it is not an element. It is made of sugar molecules. Apples are not starchy. That's fructos.
2007-01-28 06:41:02 · answer #10 · answered by Anonymous · 0⤊ 0⤋
yes, of apples and others, yep...
I should think so.
But if u don't want to trust me that's fine...
since i'm only a 6th grader and i'm not even sure.
2007-01-28 06:39:45 · answer #11 · answered by Anonymous · 0⤊ 1⤋