Pummelo (Citrus grandis (L) Osbeck) is referred to a type of giant citrus fruit native to southern Asia and Malaysia belongs to the family Rutaceae. It is thought to be the ancestor of the grape fruit. Pummelos are an excellent source of antioxidant flavonoids, a good source of potassium, phosphorus, folic acid, citric acid, etc.
The processing of citrus juice industry faced formidable problems of excessive bitter taste in terms of “bitterness” and “delayed bitterness” of juice worldwide because it reduces the quality and commercial value of the product. The two main compounds which impart the bitterness in citrus fruits are naringin and limonin.