title: Antioxidant activities of orange peel extract in ghee (butter oil) stored at different storage temperatures.
abstract: Antioxidant activities of butylatedhydroxyanisole (BHA) and orange peel powder extract in ghee stored at different storage temperatures (T1:6 ± 2 °C; T2: 32 ± 2 °C; T3:60 ± 2 °C) were evaluated during storage period of 21 days. Peroxide value (PV), thiobarbituric acid (TBA), radical scavenging activity (RSA) and free fatty acids (FFA) of ghee samples were analyzed during the study. PV, TBA and FFA of ghee samples increased significantly while radical scavenging activity (RSA) of ghee samples decreased significantly at accelerated temperature (T3) as compared to the temperatures at T1 and T2. Effect of storage temperature on development of peroxides and TBA of ghee samples was significantly higher than the effect of treatment and storage period while treatment had more significant effect on the change in FFA and RSA as compared to storage temperature and storage period. Ghee incorporated with orange peel extract (OPE) showed stronger activity in quenching DPPH radicals and least development of PV, TBA and FFA than ghee incorporated with BHA and control. The study revealed that orange peel could be a good natural source of antioxidants which can be used in fat rich food products like ghee to retard oxidative deterioration.
authors.affiliation: Southern Regional Station, ICAR-National Dairy Research Institute, Bangalore, 560030 India.
authors.forename: A
authors.initials: A
authors.lastname: Asha
authors.affiliation: Southern Regional Station, ICAR-National Dairy Research Institute, Bangalore, 560030 India.
authors.forename: M
authors.initials: M
authors.lastname: Manjunatha
authors.affiliation: Southern Regional Station, ICAR-National Dairy Research Institute, Bangalore, 560030 India.
authors.forename: R M
authors.initials: RM
authors.lastname: Rekha
authors.affiliation: Southern Regional Station, ICAR-National Dairy Research Institute, Bangalore, 560030 India.
authors.forename: B
authors.initials: B
authors.lastname: Surendranath
authors.affiliation: Southern Regional Station, ICAR-National Dairy Research Institute, Bangalore, 560030 India.
authors.forename: P
authors.initials: P
authors.lastname: Heartwin
authors.affiliation: Southern Regional Station, ICAR-National Dairy Research Institute, Bangalore, 560030 India.
authors.forename: J
authors.initials: J
authors.lastname: Rao
authors.affiliation: Southern Regional Station, ICAR-National Dairy Research Institute, Bangalore, 560030 India.
authors.forename: E
authors.initials: E
authors.lastname: Magdaline
authors.affiliation: Southern Regional Station, ICAR-National Dairy Research Institute, Bangalore, 560030 India.
authors.forename: Chitranayak
authors.initials: C
authors.lastname: Sinha
keywords: Ghee; Orange peel extract; Peroxide value; Radical scavenging activity; Thiobarbituric acid