Chemical composition, antioxidant activity and GC-MS analysis of juice and peel oil of grapefruit varieties cultivated in India

Shahnawaz Ahmed; H S Rattanpal; Khalid Gul; Rouf Ahmad Dar; Akash Sharma

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Chemical composition, antioxidant activity and GC-MS analysis of juice and peel oil of grapefruit varieties cultivated in India

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Citrus family especially Grapefruit, has attained considerable attention due to the presence of a number of essential components that have cardiovascular and anti-hypertensive properties. The juice and essential oil extracted from eight recently released grapefruit cultivars were used to study physicochemical and antioxidant properties. The total soluble solids (TSS), titratable acidity (TA) and pH of juice samples extracted from various grapefruit varieties differed significantly. The refractive index, specific gravity and optical rotation values for the oil varied from 1.473 to 1.396, 0.863 to 0.847 and+93 to +86, respectively. The percent 2,2-diphenyl-1-picrylhydrazyl radical activity (% DPPH activity) and ferric reducing antioxidant power (FRAP) values for grapefruit juice and peel oil varied from 24.06 to 18.79, 2.91 to 1.44 mmol g–1 and 84.87 to 74.73, 7.76 to 5.73 mmol g–1, respectively. There were significant differences in physicochemical, antioxidant properties and volatile profiles of extracted juice and oil. The oil exhibited higher DPPH and FRAP values than the juice. Among different components identified which accounted for over 99% of the volatile fraction, limonene, myrcene, and benzopyran were major components in all oil samples.

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《农业科学学报（英文版）》 |2019年第7期|1634-1642|共9页
作者
Shahnawaz Ahmed; H S Rattanpal; Khalid Gul; Rouf Ahmad Dar; Akash Sharma;
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作者单位

Department of Fruit Science, Punjab Agricultural University, Ludhiana 141004, India;

Department of Fruit Science, Punjab Agricultural University, Ludhiana 141004, India;

Department of Processing and Food Engineering, Punjab Agricultural University, Ludhiana 141004, India;

Food Process Engineering Laboratory, School of Applied Life Sciences, Gyeongsang National University, Jinju 660701, Republic of Korea;

Department of Microbiology, Punjab Agricultural University, Ludhiana 141004, India;

Department of Fruit Science, Sher-e-Kashmir University of Agricultural Sciences and Technology, Jammu 180009, India;

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Chemical composition, antioxidant activity and GC-MS analysis of juice and peel oil of grapefruit varieties cultivated in India

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