期刊
JOURNAL OF FOOD ENGINEERING
卷 92, 期 2, 页码 157-163出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jfoodeng.2008.10.033
关键词
Citrus by-product; High speed drying; Polymethoxylated flavone; Flavanone; Antioxidant activity
资金
- National Research Foundation of Korea [핵09A2518] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The citrus by-products (CBP) released from the citrus processing plants may contain high amount of potential bioactive compounds. Hence, this study aims to evaluate the antioxidant activity of CBP prepared using a novel drying technique known as high speed drying (HSD), economically and efficiently. HSD extract showed high amount or polymethoxylated flavones (heptamethoxyflavone and nobiletin) and flavanone (hesperidin and naritutin). The antioxidant activity was evaluated by means of DPPH, hydroxyl and alkyl radical scavenging assays and lipid peroxidation assay. HSD extract showed strong activities on radical scavenging (IC50 value of DPPH, hydroxyl and alkyl radicals scavenging were 0.16, 0.5, 0.019 mg/ml, respectively) and lipid peroxidation inhibition. These results suggest that the flavonoids and other phenolic compounds in the HSD extract could be good radical scavengers. Hence, HSD method is an effective and efficient method to transform citrus by-products into dried form and could be used in food and pharmaceutical industry as a natural antioxidant agent. (c) 2008 Elsevier Ltd. All rights reserved.
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