| Fatty acid profiles, tocopherol contents, and antioxidant activities of heartnut (Juglans ailanthifolia Var. cordiformis) and Persian walnut (Juglans regia L.). | |
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MedLine Citation:
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PMID: 17253708 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The fatty acid and tocopherol compositions of three heartnut (Juglans ailanthifolia var. cordiformis) varieties (Imshu, Campbell CW1, and Campbell CW3) were examined and compared with those of two Persian walnut (Juglans regia L.) varieties (Combe and Lake). The major fatty acids found in heartnuts and walnuts were identified by gas chromatography as linoleic (18:2n-6), alpha-linolenic (18:3n-3), oleic (18:1n-9), palmitic (16:0), and stearic acid (18:0). Polyunsaturated fatty acids were the main group of fatty acids found in both heartnut and walnut, ranging from 73.07 to 80.98%, and were significantly higher in heartnut than in Persian walnuts (P < 0.001). In addition, heartnuts had significantly higher levels of 18:2n-6 and lower levels of 18:3n-3 compared to the Persian walnuts. gamma-Tocopherol was the main tocopherol homologue present in both types of nuts, followed by delta- and alpha-tocopherol. The highest concentration of gamma-tocopherol was found in Combe Persian walnut at 267.87 mug/g, followed by Lake Persian walnut and Imshu, Campbell CW1, and CW3 heartnut at 205.45, 187.33, 161.84, and 126.46 mug/g, respectively. Tocopherols, particularly the gamma-tocopherol, were found to contribute the most to the strong total antioxidant activities of both walnut and heartnut oils using either the free radical 2,2-diphenyl-1-picrylhydrazyl assay or the photochemiluminescence method. |
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Authors:
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Li Li; Rong Tsao; Raymond Yang; John K G Kramer; Marta Hernandez |
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Publication Detail:
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Type: Journal Article Date: 2007-01-25 |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 55 ISSN: 0021-8561 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2007 Feb |
Date Detail:
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Created Date: 2007-02-15 Completed Date: 2007-06-06 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 1164-9 Citation Subset: IM |
Affiliation:
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Food Research Program, Agriculture and Agri-Food Canada, 93 Stone Road West, Guelph, Ontario N1G 5C9, Canada. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Antioxidants
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analysis* Chromatography, Gas Fatty Acids / analysis* Juglans / chemistry* Nuts / chemistry* Tocopherols / analysis* gamma-Tocopherol / analysis |
| Chemical | |
Reg. No./Substance:
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0/Antioxidants; 0/Fatty Acids; 0/gamma-Tocopherol; 1406-66-2/Tocopherols |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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