Anthocyanin concentration and antioxidant activity in light-emitting diode (LED)-treated apples in a greenhouse environmental control systemPornpan Lekkham, Varit Srilaong, Nutthachai Pongprasert and Satoru KondoFruits, 71 5 (2016) 269-274DOI: https://doi.org/10.1051/fruits/2016022