Antioxidant-rich phytochemicals in miracle berry (Synsepalum dulcificum) and antioxidant activity of its extracts
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- 作者：Liqing Du ; Yixiao Shen ; Xiumei Zhang ; Witoon Prinyawiwatkul ; Zhimin Xu
- 关键词：ABTS ; 2 ; 2&prime ; -azino-bis(3-ethyl-benzothiazoline-6-sulfonic acid) ; DHA ; docosahexaenoic acid ; DPPH ; 1 ; 1-diphenyl-2-picrylhydrazyl ; EPA ; eicosapentaenoic acid ; Equiv ; equivalent ; FRAP ; ferric-reducing antioxidant power ; FW ; fresh weight ; GA ; gallic acid ; GC ; gas chromatography ; HPLC ; high performance liquid chromatography ; MFH ; miracle fruit extract at a level of 6 ; mg/ml of emulsion ; MFL ; miracle fruit extract at a level of 3 ; mg/ml of emulsion ; PUFA ; polyunsaturated fatty acids ; QR ; q
- 刊名：Food Chemistry
- 出版年：15 June, 2014
- 年：2014
- 卷：153
- 期：Complete
- 页码：279-284
- 全文大小：600 K
文摘
Miracle berry is known for its unique characteristic of modifying sour flavours to sweet. Twelve phenolics were identified and quantified in the miracle berry flesh at a level from 0.3 for kaempferol to 17.8 mg/100 g FW for epicatechin. Lutein and 伪-tocopherol were also quantified at a level of 0.4 and 5.8 mg/100 g FW, respectively. The TP and TF contents were 1448.3 GA and 9.9 QR mg Equiv/100 g FW for the flesh, respectively, compared with 306.7 GA and 3.8 mg QR mg Equiv/100 g FW of the seeds. The free radical scavenging and reducing percentage of the flesh extract was 96.3% and 32.5% in DPPH and ABTS assays, respectively. Additionally, the flesh extract had a high FRAP of 22.9 mmol/100 g. It significantly inhibited the oxidation of PUFA in fish oil as well. Thus, miracle berry could also serve as an antioxidant-rich fruit to provide health promoting function.