@article {1000, title = {Inhibitory Effects of Different Varieties of Sweet Potato (Ipomoea batatas L.) Tubers Extracts on Lipoxygenase Activity}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {October 2019}, pages = {1195-1198}, type = {Original Article}, chapter = {1195}, abstract = {

Background: Sweet potatoes (Ipomoea batatas L.) with purple, orange and white varieties can be differentiated by their skin and flesh tubers{\textquoteright} colors. Research on anti-inflammatory activity of this plant is still limited although has been used traditionally. Objective: This study aimed to determine IC50 value of sweet potato tubers extracts in inhibiting lipoxygenase activity. Methods: Dried tubers of sweet potato were macerated with ethanol 70\%. Each extracts were tested for soybean lipoxygenase inhibitory activity, phytochemical screening and total flavonoid contents. IC50 value and total flavonoid contents obtained from each extracts were analyzed statistically. Results: IC50 value of purple, orange and white sweet potato tubers extracts are 46.09, 52.12 and 63.69 μg/mL respectively. Each extracts contain alkaloids, flavonoids, saponins, tannins and glycosides. Total flavonoid contents in purple, orange and white sweet potato extracts are 8.45{\textpm}0.41; 7.57{\textpm}0.03; and 6.12{\textpm}0.14 mgQE/g extract respectively. Conclusion: Total flavonoid contents and IC50 values of each extracts are strongly correlated and inversely proportional with significance value of 0.026 and correlation value of -0.999 which indicate that the higher total flavonoid contents, the stronger inhibitory activity.

}, keywords = {Anti-inflammatory, Ipomoea batatas L, Lipoxygenase, Sweet potato tubers, Total flavonoid contents}, doi = {10.5530/pj.2019.11.185}, author = {Sendangratri and Rosita Handayani and Berna Elya} }