In this excerpt from chapter 4, “Sweet Preserves,” she shares how to make homemade pectin from citrus fruits. You can purchase this book from the MOTHER EARTH NEWS store: Preserving Everything.

My research has been focussed on how to extract functional components of citrus fruits in an efficient and environmentally friendly fashion and to make best use of them. For example, pectin is ...

The team's results show that as the pH increased to 4.0, 7.0, and 10.0, the molecular weight, degree of esterification, and ...

Some fruits, like apples and citrus, are rife with pectin, so orange marmalade is actually easier to make than you'd think. Pectin is also commercially available in powder or liquid forms at the ...