Paper Type |
Contributed Paper |
Title |
Antioxidant Potential of Pleurotus porrigens Extract and Application in Sunflower Oil during Accelerated Storage |
Author |
Hip Seng Yim*[a, b], Fook Yee Chye [b], Mei Lian Liow [a], and Chun Wai Ho [a] |
Email |
hsyim@ucsi.edu.my |
Abstract: The oxidative stability of refined sunflower oil supplemented with edible wild mushroom, Pleurotus porrigens crude extract, its n-butanol fraction (n-BUT, from liquid-liquid partitioning), and semi-purified sub-fraction (SF) III and SFIV, were tested under accelerated storage conditions compared with BHA and a-tocopherol, by measuring their peroxide value, p-anisidine value, thiobarbituric acid-reactive substance, and iodine value. The total phenolic content (TPC), 2,2-diphenyl-1-picryhydrazyl (DPPH) radical scavenging and ferric reducing/antioxidant power (FRAP) were also evaluated. P. porrigens’ SFIII exhibited highest DPPH scavenging, while n-BUT showed highest FRAP; TPC was found highest in crude extract. Generally, BHA and a-tocopherol are more protective in stabilizing the sunflower oil. P. porrigens’ SFIII and SFIV had short-term protective effect in secondary oxidation for ½-year; whilst crude extract retarded secondary oxidation (TBARS value) and extend the shelf-life upon 1½-year. P. porrigens extracts did not show similar retardation of lipid oxidation in sunflower oil as compared to a-tocopherol and BHA at 200 ppm. However, the higher concentration of P. porrigens extracts that provided the protective effect in stabilizing sunflower oil can be further studied. |
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Start & End Page |
34 - 48 |
Received Date |
2011-12-20 |
Revised Date |
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Accepted Date |
2012-07-24 |
Full Text |
Download |
Keyword |
antioxidant activity, lipid oxidation, Pleurotus porrigens, sunflower oil |
Volume |
Vol.40 No.1 (JANUARY 2013) |
DOI |
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Citation |
Yim[a H.S., B] , Chye F.Y., Liow M.L. and Ho C.W., Antioxidant Potential of Pleurotus porrigens Extract and Application in Sunflower Oil during Accelerated Storage, Chiang Mai J. Sci., 2013; 40(1): 34-48. |
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