What are the uses of pectin and modified starch in Food Processing Technology?

They make things gel or hold together. If you've ever made jelly at home, you'd need pectin to make it "gel." Pectin is a naturally occurring substance found in the rinds of citrus fruit. Food starch can be from corn or potatoes and thickens things up, like gravies. It's often used in diet foods to mock the way fats bind things together.