Impact of different solvents on the recovery of bioactive compounds and antioxidant properties from lemon (Citrus limon L.) pomace waste

Konstantinos Papoutsis; Penta Pristijono; John Brett Golding; Costas Evangelou Stathopoulos; Christopher James Scarlett; Michael Christian Bowyer; Quan Van Vuong

doi:10.1007/s10068-016-0158-8

Impact of different solvents on the recovery of bioactive compounds and antioxidant properties from lemon (Citrus limon L.) pomace waste

Food Sci Biotechnol. 2016 Aug 31;25(4):971-977. doi: 10.1007/s10068-016-0158-8. eCollection 2016.

Authors

Konstantinos Papoutsis¹, Penta Pristijono¹, John Brett Golding^{1

2}, Costas Evangelou Stathopoulos³, Christopher James Scarlett¹, Michael Christian Bowyer¹, Quan Van Vuong¹

Affiliations

¹ 1School of Environmental and Life Sciences, University of Newcastle, PO Box 127, Ourimbah, NSW 2258 Australia.
² NSW Department of Primary Industries, Locked Bag 26, Gosford, NSW 2250 Australia.
³ 3Division of Food and Drink, School of Science, Engineering and Technology, University of Abertay, Dundee, DD1 1HG UK.

Abstract

The effects of different solvents on the recovery of (i) extractable solids (ES), (ii) total phenolic compounds (TPC), (iii) total flavonoid content (TFC), (iv) vitamin C, and (v) antioxidant activity from lemon pomace waste were investigated. The results revealed that solvents significantly affected the recovery of ES, TPC, TFC, and antioxidant properties. Absolute methanol and 50% acetone resulted in the highest extraction yields of TPC, whereas absolute methanol resulted in the highest extraction of TFC, and water had the highest recovery of vitamin C. 50% ethanol, and 50% acetone had higher extraction yields for TPC, and TFC, as well as higher antioxidant activity compared with their absolute solvents and water. TPC and TFC were shown to be the major components contributing to the antioxidant activity of lemon pomace.

Keywords: antioxidant; ascorbic acid; extractable solid; lemon peel; total flavonoid.