Apples, quince, plums, Gooseberries, Oranges and other citrus fruits contain much pectin, while soft fruits like cherries, grapes and strawberries contain little pectin.
http://en.wikipedia.org/wiki/Pectin
Pectin. Pectin is a food-gum that comes from fruit that helps thicken jam when sugar is added.
Low methoxyl pectin requires the addition of calcium ions to form a gel, while high methoxyl pectin forms a gel with sugar and acid. Low methoxyl pectin is suitable for products where calcium is already present, like dairy-based products. High methoxyl pectin is commonly used in jams and jellies.
It is a false statement that bacteria do not grow well in food with high levels of moisture such as meat and cheese.
Pectin itself is a type of fiber found in fruits and is not a source of sugar. However, commercial pectin used in food and canning processes may contain added sugars or sweeteners.
The basics of jelly are a vegetable or fruit juice; sugar, honey, or artificial sweetener, and usually pectin. Jelly ma not need added pectin if the fruit is already high in pectin, like apples.
calcium causes cheese to have high energy levels
do foods contain oestrogen
food with high sodium levels
The amount of sugar in food can vary. Some foods contain high levels of sugar while others may have very low levels of sugar.
When you have high levels of sugar in your blood, you really have to change your food. Else it can cause in diabetes type 2. When you have high levels of sugar for a long period of time it can damage the vessels and it can increase the chance of getting a heart attack
Pectin is an important cell wall polysaccharide that allows primary cell wall extension and plant growth. During fruit ripening, pectin is broken down by the enzymes pectinase and pectinesterase, in which process the fruit becomes softer as the middle lamellae break down and cells become separated from each other. In human digestion, pectin binds to cholesterol in the gastrointestinal tract and slows glucose absorption by trapping carbohydrates. Pectin is thus a soluble dietary fiber. Consumption of pectin has been shown to reduce blood cholesterol levels. The mechanism appears to be an increase of viscosity in the intestinal tract, leading to a reduced absorption of cholesterol from bile or food. In the large intestine and colon, microorganisms degrade pectin and liberate short-chain fatty acids that have positive influence on health.
Granny Smith apples are known to have a high pectin level compared to other varieties. Pectin is a soluble fiber that helps with digestion and can be used in making jams and jellies due to its ability to thicken.