YC collected and identified the plant material, and drafted the manuscript.
YC collected and identified the plant material, and drafted the manuscript. ZP performed the GC-MS analysis, identified the elements and drafted the manuscript. TL took a part of the bioassay experiments. SY identified the elements and took part of the bioassay experiments. All authors read and approved the final manuscript. Acknowledgements The authors wish to thank the Scientific Study of BRD4 Modulator medchemexpress Guizhou (No.20126006) for the financial support. Author particulars 1 Guizhou Fruit Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550006, P R China. 2Research Institute of Classic Chinese Medicine, Yangtze River Pharmaceutical Group Beijing Haiyan Pharmaceutical Co., Ltd, Beijing 102206, P R China. 3State key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, P R China. Received: 15 December 2013 Accepted: 30 December 2013 Published: 3 January 2014 References 1. Jaafar RA, Rahman ARBA, Mahmod NZC, Vasudevan R: Proximate analysis of dragon fruit (Hylecereus polyhizus). Am J Appl Sci 2009, 6:1341346. 2. Choo WS, Yong WK: Antioxidant properties of two species of Hylocereus fruits. Adv Appl Sci Res 2011, two:41825. 3. De Freitas ST, Mitcham EJ: Excellent of pitaya fruit (Hylocereus undatus) as influenced by storage temperature and packaging. Sci Agric 2013, 70:25762. four. Rebecca OPS, Boyce AN, Chandran S: Pigment identification and antioxidant properties of red dragon fruit (Hylocereus polyrhizus). Afr J Biotechnol 2010, 9:1450454. 5. Esquivel P, Stintzing FC, Carle R: Phenolic compound profiles and their corresponding antioxidant capacity of purple pitaya (Hylocereus sp.) genotypes. Z Naturforsch C 2007, 62:63644. 6. Nurliyana R, Syed Zahir I, Mustapha Suleiman K, Aisyah MR, Kamarul Rahim K: Antioxidant study of pulps and peels of dragon fruits: a comparative study. Int Meals Res J 2010, 17:36775. 7. Herbacha KM, Stintzinga FC, Elssb S, Prestonb C, Schreierb P, Carlea R: Isotope ratio mass spectrometrical analysis of betanin and isobetanin isolates for authenticity evaluation of purple pitaya-based goods. Food Chem 2006, 99:20409. eight. Herbach KM, Stintzing FC, Carle R: Identification of heat-induced degradation goods from purified betanin, phyllocactin and hylocerenin by high-performance liquid chromatography/electrospray ionization mass spectrometry. Fast Commun Mass Sp 2005, 19:2603616. 9. Janeczko A: The presence and activity of progesterone in the plant LPAR1 Antagonist Formulation kingdom. Steroids 2012, 77:16973. 10. Nicholas HJ: Biosynthesis of -sitosterol and pentacyclic triterpenes of Dalvia officinalis. J Bio Chem 1962, 237:1676680. 11. Patocka J: Biologically active pentacyclic triterpenes and their present medicine signification. J Appl Biomed 2013, 1:72. 12. Thao NTP, Hung TM, Lee MK, Kim JC, Min BS, Bae K: Triterpenoids from Camellia japonica and their cytotoxic activity. Chem Pharm Bull 2010, 58:12124. 13. Lin L, Gao Q, Cui C, Zhao H, Fu L, Chen L, Yang B, Luo W, Zhao M: Isolation and identification of ent-kaurane-type diterpenoids from Rabdosia serra (MAXIM.) HARA leaf and their inhibitory activities against HepG-2, MCF-7, and HL-60 cell lines. Meals Chem 2012, 131:1009014.DPPH free radical scavenging assayThe DPPH cost-free radical scavenging assay has been broadly utilised to evaluate the antioxidant capacity, which is stable on account of its resonance stability and unique blockade of benzene rings [27,28]. Th.