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. 2018 Nov 2;13(11):e0206793. doi: 10.1371/journal.pone.0206793

Table 1. Attributes & explanation.

Object code Object names Object explanation
1 picking/slaughtering date vegetable pick date; pork slaughter date; raw milk date
2 pesticide/veterinary use specific information on pesticide/preventative medicine use
3 fertilizer/feed use specific information on fertilizer/feed use
4 history of illness and taking protective measures history of illness and protective measures taken
5 processing information cleaning, sorting, grading information for vegetables; cleaning, segmentation, grading, storage information for pork; dairy products processing factory information, information on relevant staff, quality information for raw milk (test before process), production technical process, information on additives, quality control standards
6 packaging information specific information on products packaging, such as information on packaging company, quality information (test when packaging)
7 transportation information specific information on food transportation, such as vehicle information, information on the transporter, vehicle quality control information, time information, transportation track information
8 retail information retailer information, storage information, sales flow information for the food, current product condition
9 environmental information of the origin farm environment for vegetable, pork, and raw milk production
10 producers’ information specific farming information covers vegetable/pig; specific farming information covers dairy products
11 traceable tag certification information whether the products carried a certification label, and information on the testing institute.