Antioxidant potential of extracts from different agro wastes: Stabilization of corn oil


  • Bushra Sultana Department of Chemistry, University of Agriculture
  • Farooq Anwar Department of Chemistry, University of Agriculture
  • Muhammad Rafique Asi Nuclear Institute for Agriculture and Biology (NIAB)
  • Shahzad Ali Shahid Chatha Department of Chemistry, University of Agriculture



Corn oil, DPPH radical, Extraction, Flavonols, HPLC, Inhibition(%), Oxidation parameters, Total phenolics and flavonoids.


The antioxidant potential of 80% methanolic extracts of some agro wastes (pomegranate peel, apple peel, banana peel, citrus peel, corncob, wheat husk, wheat bran, rice bran, and rice hull) was assessed. The yields of the extracts varied over a wide range (8.83 to 29.9 g/100g of dry weight). TPC, TFC, total flavonols (kaempeferol, quercetin, myricetin; HPLC method), DPPH. radical scavenging and inhibition of linoleic acid peroxidation for the extracts varied significantly (P < 0.05) ranging from 0.16-36.40, 0.026-4.89 g/100g of dry matter, 1.06-2622.41 mg/Kg of dry matter, 11.2-52.6, and 64.8-96.4%, respectively. Pomegranate peel extract, offering the highest TPC, TFC, and total flavonols exhibited superior antioxidant activity followed by apple peel, citrus peel, banana peel, corncob, wheat bran, rice bran, wheat husk, and rice hull. Furthermore, the antioxidant effectiveness of the extracts was assessed using corn oil (CO) as the oxidation substrate. CO samples stabilized with extracts at a concentration of 600 ppm (w/w) were subjected to accelerated aging (60 ºC, oven heating, 30 days; 8 h heating cycle per day), and analyzed periodically for the extent of oxidative alterations following the measurement of conjugated dienes (CD), conjugated trienes (CT), p-anisidine and peroxide values. The correlation between the results of different antioxidant assays and oxidation parameters investigated in the present study indicated that fruit peel extracts, exhibiting higher TPC, TFC, flavonol and scavenging power, were also more potent for enhancing the oxidative stability of corn oil.


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Abrosca BD, Pacifico S, Cefarelli G, Mastellone C, Fiorentino A. 2007. “Limoncella, apple an Italian apple cultivar: phenolic and flavonoid contents and antioxidant activity. Food Chem. 104, 1333-1337. American Oil Chemists Society (AOCS). 1997. Official Methods and Recommended Practices of the AOCS, 5th edn., AOCS Press, Champaign.

Anagnostopoulou MA, Kefalas P, Papageorgiou VP, Assimopoulou AN, Boskou D. 2006. Radical scavenging activity of various extracts and fractions of sweet orange peel (Citrus sinensis). Food Chem. 94, 19-25. doi:10.1016/j.foodchem.2004.09.047

Anwar F, Siddiq A, Iqbal S, Asi MR. 2007. Stabilization of sunflower oil with Moringa oleifera leaves under ambient storage. J. Food Lipid 14, 35-49. doi:10.1111/j.1745-4522.2006.00069.x

Chaovanalikit A, Wrolstad RE. 2004. Total anthocyanins and total phenolics of fresh and processed cherries and their antioxidant properties. J. Food Sci. 69, 67-72. doi:10.1111/j.1365-2621.2004.tb17858.x

Chatha SAS, Anwar F, Manzoor M, Bajwa JR. 2006. Evaluation of the antioxidant activity of rice bran extracts using different antioxidant assays. Grasas Y Aceites 57, 328-335.

Cheng Z, Su L, Moore J, Zhou K, Luther M, Yin JJ, Yu LL. 2006. Effect of postharvest treatment and heat stress on availability of wheat antioxidants. J. Agric. Food Chem. 54, 5623-5629. doi:10.1021/jf060719b PMid:16848555

Choi Y, Jeong HS, Lee J. 2007. Antioxidant activity of methanolic extracts from some grains consumed in Korea. Food Chem. 103, 130-138. doi:10.1016/j.foodchem.2006.08.004

Dewanto V, Wu X, Adom KK, Liu R.H. 2002. Thermal processing enhances the nutritional value of tomatoes by increasing total antioxidant activity. J. Agric. Food Chem. 50, 3010-3014. Devi RR, Jayalekshmy A, Arumughan C. 2007. Antioxidant efficacy of phytochemical extracts from defatted rice bran in the bulk oil system. Food Chem. 104, 658-664.

Fan J, Ding X, Gu W. 2007. Radical-scavenging proanthocyanidins from sea buckthorn seed. Food Chem. 102, 168-177. doi:10.1016/j.foodchem.2006.05.049

Gil MI, Tomas-Barberan FA, Hess-Pierce B, Holeroft DM, Kadar AA. 2000. Antioxidant activity of pomegranate juice and its relationship with phenolic composition and processing. J. Agric. Food Chem. 48, 4581-4589. doi:10.1021/jf000404a PMid:11052704

Hsu B, Coupar IM, Ng K. 2006. Antioxidant activity of hot water extract from the fruit of the Doum palm, Hyphaene thebaica. Food Chem. 98, 317-328. doi:10.1016/j.foodchem.2005.05.077

Huang D, Ou B, Prior RL. 2005. The chemistry behind antioxidant capacity assays. J. Agric. Food Chem. 53, 1841-1856. doi:10.1021/jf030723c PMid:15769103

Iqbal S, Bhanger MI, Anwar F. 2005. Antioxidant properties and components of some commercially available varieties of rice bran in Pakistan. Food Chem. 93, 265-272. doi:10.1016/j.foodchem.2004.09.024

Iqbal S, Bhanger MI. 2007. Stabilization of sunflower oil y garlic extract during accelerated storage. Food Chem. 100, 246-254. doi:10.1016/j.foodchem.2005.09.049

Iqbal S, Bhanger MI and Anwar F. 2007. Antioxidant properties and components of bran extracts from selected wheat varieties commercially available in Pakistan. LWT 40, 361-367. doi:10.1016/j.lwt.2005.10.001

International Union of Pure and Applied Chemistry (IUPAC). 1987. Standard Methods for the Analysis of Oils, Fats and Derivatives, 7th Rev. edited by C. Paquot and A. Hautfenne, Blackwell Scientific, London.

Kahkonen M.P, Hopia AI, Vuorela HJ, Rauha JP, Pihlaja K, Kujala TS, Heinonen M. 1999. Antioxidant activity of plant extracts containing phenolic compounds. J. Agric. Food Chem. 47, 3954-3962. doi:10.1021/jf990146l PMid:10552749

Karadeniz F, Burdurlu HS, Koca N, Soyer Y. 2005. Antioxidant activity of selected fruits and vegetables grown in Turkey. Turk. J. Agric. 29, 297-303.

Kim JS. 2005. Radical scavenging capacity and antioxidant activity of E vitamin fraction in rice bran. J. Food Sci. 70, 208-213. doi:10.1111/j.1365-2621.2005.tb11484.x

Leontowicz H, Gorinstein S, Lojek A, Leontowicz M, Ci ZM, Soliva-Fortuny R, Park YS, Jung ST, Trakhtenberg S, Martin-Belloso O. 2002. Comparative contents of some bioactive compounds in apples, peaches and pears and their influence on lipids and antioxidant capacity in rates. J. Nutr. Biochem. 13, 603-610. doi:10.1016/S0955-2863(02)00206-1 PMid:12550072

Li Y, Guo C, Yang J, Wei J, Xu J, Cheng S. 2006. Evaluation of antioxidant properties of pomegranate peel extract in comparison with pomegranate pulp extract. Food Chem. 96, 254-260. doi:10.1016/j.foodchem.2005.02.033

Liyana-Pathirana CM, Shahidi F. 2007. Antioxidant and free radical scavenging activities of whole wheat and milling fractions. Food Chem. 101, 1151-1157. doi:10.1016/j.foodchem.2006.03.016

Moure A, Cruz JM, Franco D, Dominguez JM, Sineiro J, Dominguez H, Nunez MJ, Parjo JC. 2001. Natural antioxidants from residual sources. Food Chem. 72, 145-171. doi:10.1016/S0308-8146(00)00223-5

Negi PS, Jayaprakasha GK, Jena BS. 2003. Antioxidant and antimutagenic activities of pomegranate peel extracts. Food Chem. 80, 393-397. doi:10.1016/S0308-8146(02)00279-0

Okonogi S, Duangrat C, Anuchpreeda S, Tachakittirungrod S, Chowwanapoonpohn S. 2007. Comparison of antioxidant capacities and cytotoxicities of certain fruit peels. Food Chem. 103, 839-846. doi:10.1016/j.foodchem.2006.09.034

Roginsky V, Lissi EA. 2005. Review of methods to determine chain breaking antioxidant activity in food. Food Chem. 92, 235-254. doi:10.1016/j.foodchem.2004.08.004

Shahidi F. 1997. Natural Antioxidants, Chemistry, Health Effects and Applications. Champaign, IL, USA: AOCS Press, Champaign.

Siddhuraju P, Becker K. 2007. The antioxidant and free radical scavenging activities of processed cowpea (Vigna unguiculata L.) see extracts. Food Chem. 101, 10-19. doi:10.1016/j.foodchem.2006.01.004

Siddiq A, Anwar F, Manzoor M, Fatima A. 2005. Antioxidant activity of different solvent extracts of Moringa oleifera leaves under accelerated storage conditions of sunflower oil. Asian J. Plant Sci. 4, 630-635.

Someya S, Yoshiki Y, Okubo K. 2002. Antioxidant compounds from bananas (Musa cavendish). Food Chem. 79, 351-354. doi:10.1016/S0308-8146(02)00186-3

Sultana B, Anwar F, Przybylski R. 2007. Antioxidant activity of phenolic components present in barks of Azadirachta indica,Terminalia arjuna, Acacia nilotica, and Eugenia jambolana Lam. trees. Food Chem. 104, 1106-1114. doi:10.1016/j.foodchem.2007.01.019

Sikwese FE, Duodu KG. 2007. Antioxidant effects of crude phenolic extracts from sorghum bran in sunflower oil in the presence of ferric ions. Food Chem. 104, 324-331. doi:10.1016/j.foodchem.2006.11.042

Tokusoglu O, Unal MK, Yildirum Z. 2003. HPLC-UV and GC-MS characterization of the flavonol aglycons quercetin, kaempferol and myrecetin in tomato and tomato pastes and other tomato-based products. Acta Chromatographica 13, 196-207.

Wang SY, Chang HN, Lin KT, Lo CP, Yang NS, Shyur LF. 2003. Antioxidant properties and phytochemical characteristics of extracts from Lactuca indica. J. Agric. Food Chem. 51, 1506-1512. doi:10.1021/jf0259415 PMid:12590506

Wang YC, Chuang YC, Ku YH. 2007. Quantitation of bioactive compounds in citrus fruits cultivated in Taiwan. Food Chem. 102, 1163-1171. doi:10.1016/j.foodchem.2006.06.057

Wolfe KL, Liu RH. 2003. Apple peels as a value-added food ingredient. J. Agric. Food Chem. 51, 1676-1683. doi:10.1021/jf025916z PMid:12617604

Yen GC, Duh PD, Chuang DY. 2000. Antioxidant activity of anthraquinones and anthrone.Food Chem. 70, 307-315. doi:10.1016/S0308-8146(00)00108-4

Zhou K, Yu L. 2004. Effects of extraction solvent on the wheat bran antioxidant activity estimation. LWT 37, 717-721.

Zia-ur-Rehman. 2006. Citrus peel extract- A natural source of antioxidant. Food Chem. 99, 450-454. doi:10.1016/j.foodchem.2005.07.054




How to Cite

Sultana B, Anwar F, Rafique Asi M, Ali Shahid Chatha S. Antioxidant potential of extracts from different agro wastes: Stabilization of corn oil. Grasas aceites [Internet]. 2008Sep.30 [cited 2024Apr.17];59(3):205-17. Available from:




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