The history of the airplane shows it was invented by Orville (1871-1948) and Wilbur (1867-1912) Wright. They got the patent 9 months prior to their flight in December 1903. The Early History of Flight. There are pictures showing Orville Wright on the plane flying.
Naturally occurring pectin is a soluble fiber found in many fruits and plants. Pectin is a great example of a natural polymer, and is composed of pectic acid and pectinic acid molecules. It is basically a compound with a bunch of sugars and acids attached to it. (I always find the chemical structure fun!) Every plant contains some amount, sometimes just a very small amount, of pectin.
Often their gel like consistency is achieved using naturally occurring pectin that is found in fruits and vegetables. If not enough pectin is present in the fruit or vegetable, then pectin or some other gelling agent has to be added.The formula for making jam is essentially: mix 50% fruit with 50% sugar, add plenty of water and bring the whole lot to around boiling temperature where the naturally occurring pectin is activated.f the fruit does not contain enough pectin, then pectin can be added to ensure a jelly can set properly. Generally prepackaged cubes do not set as well as home made jelly. Vegetarian gelatin, often agar agar-E406, sets pretty hard when compared to jelly that uses gelatin.