Funding for this research was provided by:
Scottish Government (Rural Affairs, Food, the Environment (RAFE) Strategic Research Programme 2016-2021 Theme 3 RD3.1.4 ‘Preventing food waste’)
Received: 7 June 2017
Revised: 26 September 2017
Accepted: 4 October 2017
First Online: 17 October 2017
Compliance with ethical standards
: The authors declare that they have no conflict of interest.