Table 1.

List of X (context) and Y (assessment) keywords used in the literature search with the query (x1 OR x2 OR x3 OR … xn) AND (y1 OR y2 OR y3 OR … yn).

X (context) keywords	Y (assessment) keywords
City Region Food Systems	Food quality	Good agricultural practices
CRFS	Food safety	GAP
Hydroponics	Pesticides	Agricultural practices
Soilless system	Plant protection products	Polycyclic aromatic hydrocarbons
Roof garden	PPP	PAH
Aquaponics	Pesticide residues	Persistent organic pollutants
Food production	Heavy metals	POP
Rooftop greenhouse	Potentially toxic elements	Postharvest handling
Controlled environment	PTE	Processing practices
Indoor farming	Dioxins	Consumer handling
Urban farming	Dibenzofurans	Washing and sanitizing
Leafy Vegetables	Polychlorobiphenyls	Risk management
Fresh produce	PCB	Risk assessment
Hydroponic produce	Nitrates	Benefits in nutrition
Nutrient Film Technique	E. coli	Nutrient
NFT	E. coli O157:H7	Additives
Recirculating nutrient solution	Salmonella	fortifica* OR biofortifica*
Recirculating aquaponic system	Listeria	Anti-nutrients
Irrigation water	Coliforms	Food chain
Urban soil	Foodborne illness	Food composition
Rural soil	Human health	Government food standards
zero km food	Community health	Bioactive non-nutrients
Urban horticulture	Health risk evaluation	Food contaminants
Urban agriculture	Quantitative microbial risk assessment	Shelf-life
Vertical Farming	QMRA	Nutraceuticals
	Ultraviolet treatment	Microplastics
	Water disinfection treatment	Plastics