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Peel oils from three Citrus species: volatile constituents, antioxidant activities and related contributions of individual components

文献类型： 外文期刊

作者： Lu, Qi 1 ; Huang, Nana 2 ; Peng, Ying 2 ; Zhu, Chunhua 2 ; Pan, Siyi 2 ;

作者机构： 1.Hubei Acad Agr Sci, Res Inst Agr Prod Proc & Nucl Agr Technol, Wuhan, Hubei, Peoples R China

2.Huazhong Agr Univ, Coll Food Sci & Technol, 1 Shizishan St, Wuhan 430070, Hubei, Peoples R China

关键词： Citrus peel oil; Hydrodistillation; Cold pressing; Individual component; Antioxidant activities

期刊名称：JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE （ 影响因子：2.701； 五年影响因子：3.574 ）

ISSN： 0022-1155

年卷期： 2019 年 56 卷 10 期

页码：

收录情况： SCI

摘要： In the present study, peel oils were extracted through hydrodistillation and cold pressing from three Citrus species (Valencia orange, Ponkan and Eureka lemon) to investigate their volatile constituents and antioxidant activities. A total of 47 volatile components were identified by GC-MS, and then grouped by principal component analysis. The extraction methods were found to have an obvious effect on the proportion of terpenes and oxygenated compounds in the six Citrus oils, especially for Eureka lemon oils. The major fractions in the Citrus oils were found to be monoterpenes (78.65-96.57%), with limonene occupying a dominant percentage (51.22-86.65%). Furthermore, gamma -terpinene and terpinolene displayed strong DPPH (1,1-diphenyl-2-picrylhydrazyl) scavenging abilities and efficient inhibition of lipid peroxidation, while oxygenated compounds of alpha -terpineol and terpinen-4-ol showed poor DPPH radical-scavenging abilities. Therefore, hydrodistillated Eureka lemon oil with high levels of alpha -terpineol (9.11%) and terpinen-4-ol (4.69%) presented low radical scavenging capability. Citral displayed a high pro-oxidant ability against thiobarbituric acid reactive species formation, which might lead to the decreased ability of the Eureka lemon oils in inhibition of lipid peroxidation, since citral was significantly high in Eureka lemon oils. This study facilitated the understanding of volatile constituents and antioxidant activities in different Citrus peel oils.

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