Impact of Low Water Use Systems on Bioactive Flavonoids of Grapefruit Academic Article uri icon

abstract

  • Citrus is grown in approximately 27,000 acres in the Lower Rio Grande Valley (LRGV), Texas with flood irrigation and declining water supply demands conservative irrigation practices. The objective of this study was to determine the changes in phytonutrient content of grapefruit as influenced by irrigation practices. Four major flavonoids, naringin (N), narirutin (NT), didymin (D) and poncirin (P) were quantified using HPLC in grapefruit harvested from trees irrigated prior under drip, microjet and flood irrigation. Fruit from drip irrigated trees had higher flavonoid content, however, no significant variation was noticed among low water use systems and flood irrigated trees. The ranges of N, NT, D and P were 92-96, 28-31, 8.2-9.5 and 17-19 mg/100 ml of fresh juice respectively. Total phenolic content ranged from 4.8 to 5.5 mg gallic acid/g dw and there was no significant difference among the irrigation treatments. This shows that low water use systems did not affect the phytonutrient content of grapefruits.

published proceedings

  • II INTERNATIONAL SYMPOSIUM ON HUMAN HEALTH EFFECTS OF FRUITS AND VEGETABLES: FAVHEALTH 2007

author list (cited authors)

  • Uckoo, R. M., Jayaprakasha, G. K., Patil, B. S., & Nelson, S. D.

citation count

  • 3

complete list of authors

  • Uckoo, RM||Jayaprakasha, GK||Patil, BS||Nelson, SD

publication date

  • August 2009