Type of Citrus peels Identified  carotenoids %
Sour orange Capsorubin 39.22
Zeaxanthin 4.40
Cryptoxanthin 5.53
Unidentified 0.53
Unidentified 0.71
Lutein 3.76
Canthaxanthin 5.20
Capsanthin 34.88
β-Carotene 5.20
Grape fruit Antheraxanthin 4.75
Violaxanthin 36.76
Lutein 4.41
Zeaxanthin 44.66
Cryptoxanthin 3.75
β-Carotene 5.30
Table 3: Identification of carotenoid pigments of Sour orange and Grape fruits.