Molecules 2013, 18(10), 12029-12040; doi:10.3390/molecules181012029
Article

Yields, Phenolic Profiles and Antioxidant Activities of Ziziphus jujube Mill. in Response to Different Fertilization Treatments

1 College of Food Science and Engineering, Northwest A & F University, Yangling 712100, Shaanxi, China 2 School of Public Health, Ningxia Medical University, Yinchuan 750004, Ningxia, China 3 Department of Plants, Soils, and Climate, College of Agriculture, Utah State University, Logan, UT 84322, USA 4 Chinese Cereals and Oils Association, Beijing 100037, China
* Author to whom correspondence should be addressed.
Received: 21 August 2013; in revised form: 10 September 2013 / Accepted: 17 September 2013 / Published: 27 September 2013
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Abstract: Increasing demand for more jujube (Ziziphus jujube Mill.) production requires understanding the specific fertilization needs of jujube trees. This study was conducted to compare fruit yields, phenolic profiles and antioxidant activity of jujube in response to different fertilizers. Application of organic fertilizer appeared to enhance the phenolics and antioxidant activity accumulation of jujubes, compared to conventional fertilized jujubes. Amongst inorganic fertilizers, supplemental potassium as an individual nutrient improved the accumulation of phenolics in jujubes. Our results demonstrate that phenolics levels and antioxidant activity of jujube can be manipulated through fertilizer management and tracked by following proanthocyanidin concentrations. In a practical production context, the combination of organic fertilizers and inorganic fertilizers such as more supplemental individual potassium, and less supplemental individual nitrogen and phosphorus, might be the best management combination for achieving higher phenolic concentration, stronger antioxidant activity and a good harvest.
Keywords: jujube; organic fertilizer; inorganic fertilizer; phenolics; antioxidant activity

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MDPI and ACS Style

Wu, C.-S.; Gao, Q.-H.; Kjelgren, R.K.; Guo, X.-D.; Wang, M. Yields, Phenolic Profiles and Antioxidant Activities of Ziziphus jujube Mill. in Response to Different Fertilization Treatments. Molecules 2013, 18, 12029-12040.

AMA Style

Wu C-S, Gao Q-H, Kjelgren RK, Guo X-D, Wang M. Yields, Phenolic Profiles and Antioxidant Activities of Ziziphus jujube Mill. in Response to Different Fertilization Treatments. Molecules. 2013; 18(10):12029-12040.

Chicago/Turabian Style

Wu, Chun-Sen; Gao, Qing-Han; Kjelgren, Roger K.; Guo, Xu-Dan; Wang, Min. 2013. "Yields, Phenolic Profiles and Antioxidant Activities of Ziziphus jujube Mill. in Response to Different Fertilization Treatments." Molecules 18, no. 10: 12029-12040.

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