دورية أكاديمية
Identification and evaluation of antioxidants defatted Camellia oleifera seeds by isopropanol salting-out pretreatment
| العنوان: | Identification and evaluation of antioxidants defatted Camellia oleifera seeds by isopropanol salting-out pretreatment |
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| المؤلفون: | 吳立真, Wu, LC |
| المساهمون: | 科技學院:應用化學系, Chen, JH (Chen, Jung-Hui), Wu, HY (Wu, Hsing-Yu), Liau, BC (Liau, Bing-Chung), Chang, CMJ (Chang, Chieh-Ming J.), Jong, TT (Jong, Ting-Ting), Wu, LC (Wu, Li-Chen) |
| بيانات النشر: | ELSEVIER SCI LTD |
| سنة النشر: | 2010 |
| المجموعة: | National Chi Nan University (NCNU) Repository |
| مصطلحات موضوعية: | FLUORESCENCE-BASED ASSAY, KAEMPFEROL GLYCOSIDES, FREE-RADICALS, TEA PLANT, FLAVONOIDS, SINENSIS, OLIGOGLYCOSIDES, CONSTITUENTS, CHEMISTRY, ANALOGS |
| الوصف: | Seven flavonoid glycosides (1-7) and one theasaponin (8) were isolated from the defatted Camellia oleifera seeds using the isopropanol salting-out pretreatment (ISP) technique, followed by column chromatography. Among them, compounds 5, 7, and 8 are new compounds. The comparison of oxygen radical absorbance capacity (ORAC) of crude extracts extracted by the n-butanol partition (BP) with those extracted by the ISP showed that the latter method yields eight times greater scavenging capacities than that of the former approach. Besides, ISP exhibited almost twice the extraction efficiency than that of BP. ORAC and Trolox equivalent antioxidant capacity (TEAC) analysis revealed that the most potent antioxidants are compounds 1 and 2, which exhibited 1.78 and 1.41 times higher antioxidant activity than that of Trolox, respectively. These results indicated that the ISP approach improves the extraction efficiency in the isolation of potent antioxidants, making the defatted C. oleifera seeds valuable in the food additive industry. (C) 2010 Elsevier Ltd. All rights reserved. ; SCI |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | 112 bytes; text/html |
| اللغة: | English |
| العلاقة: | FOOD CHEMISTRY,121(4): 1246-1254 Aug 15 2010; http://ir.ncnu.edu.tw:8080/handle/310010000/12189Test; http://ir.ncnu.edu.tw:8080/bitstream/310010000/12189/1/index.htmlTest |
| الإتاحة: | http://ir.ncnu.edu.tw:8080/handle/310010000/12189Test http://ir.ncnu.edu.tw:8080/bitstream/310010000/12189/1/index.htmlTest |
| رقم الانضمام: | edsbas.4E885B8E |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |