Pigmentation tuber

De Jong, H. (1987). Inheritanee of pigmented tuber flesh in cultivated diploid potatoes. American Potato Journal,... 

The food technologist may be especially interested in the fate of the carotenoids in the seed oil. Like red palm oil, the resulting carotenoid-pigmented canola oil may be more stable due to the antioxidant properties of carotenoids and may be more attractive to consumers. Alternatively, for food security concerns, transgenic soybean or canola oils and seed meals that are genetically modified for more efficient bio-diesel production may be bio-safety marked with lipid-soluble carotenoids and water-soluble anthocyanins, respectively. Potatoes are excellent potential sources of dietary carotenoids, and over-expression of CrtB in tubers led to the accumulation of P-carotene. Potatoes normally have low levels of leaf-type carotenoids, like canola cotyledons. 

It was established that each pigment was acylated by hydroxycinnamic acid and the acylation increased the stability of the pigments. Furthermore, the data demonstrated that the tubers of pinta boca can be employed as a natural colourant in the food industry [259],... 

Perla, V. Holm, D. G. Jayanty, S. S., Effects of cooking methods on polyphenols, pigments and antioxidant activity in potato tubers. Lwt-Food Science and Technology (2012) 45,161-17L... 

Phytochemistry The mbers contain poisonous saponins, traces of alkaloids and starch. The spathe contains pigments (Khalmatov 1964). The leaves and tuber contain a number of different lipids. The leaves contain carotinoids neoxanthine and carotene (Chernenko et al. 2005). 

---