The Effect of Milk-Pectin Protein Concentrate Composite Edible Coating Reinforced by Calcium Chloride and Nigella Sativa L. Essential Oil on the Physicochemical, Antioxidant and Microbial Characteristics of Strawberries During Storage

Document Type : Original Article

Authors

1 PhD. of Food Biotechnology, Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, Tabriz

2 Professor, Department of Food Science and Technology, Faculty of Agriculture and Natural Resources, Urmia University, Urmia, Iran

3 PhD Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran

Abstract

The aim of this study is to increase the shelf life and quality of strawberries, using a composite coating of concentrated milk protein-pectin reinforced with calcium chloride and Nigella sativa L. essential oil during 10 days of storage at 4±1°C. The effect of edible coating based on condensed milk protein (4, 6 and 8%), pectin (0, 2 and 4%), calcium chloride (1, 2 and 3%), glycerol (2, 3 and 4%) and Nigella sativa L. essential oil (2%) is investigated. After optimizing the microbial quality of coated strawberries, their physicochemical properties, antioxidant activity, anthocyanin content, and tissue hardness were compared with the control samples at 5 and 10 days after storage. All the studied qualitative characteristics of the coated samples were significantly different from the control samples (p <0.05). The results showed that this edible coating maintains the quality of strawberries in comparison to the uncoated control samples due to rot reduction. 

Keywords

Main Subjects


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Volume 12, Issue 46
November 2021
Pages 19-31
  • Receive Date: 26 April 2021
  • Revise Date: 23 August 2021
  • Accept Date: 18 October 2021
  • Publish Date: 23 August 2021