University of Tabriz Food Research Journal 2008-515X 25 2 2015 08 23 Evaluation of quality properties and shelf life of functional colored yoghurt incorporating containing beetroot, spinach and tomato extract Evaluation of quality properties and shelf life of functional colored yoghurt incorporating containing beetroot, spinach and tomato extract 283 297 3935 FA K Alirezalou J Hesari MH Sadeghi A Rezaei Journal Article 2015 11 18 https://foodresearch.tabrizu.ac.ir/article_3935_128521aa030de8b59840e3bdc3409b4a.pdf