Table 33.

Summary results of surveys conducted on total glycoalkaloids (TGAs) levels in potatoes for human consumption sampled in retail outlets

Country	Year of survey	Potato cultivars	N	TGA average (mg/kg fw)b	Range (mg/kg fw)	Analytical technique	Reference
CZ	1993–1994	All cultivars (14) (tuber size 100–160 g)a	14	63	23–95	HPLC‐UV	Panovská et al. (1997)
		All cultivars (14) (tuber size 20–50 g)a	14	110	40–237
DK	2001–2002	All cultivars (6)	28	102	45–167	HPLC‐UV	Knuthsen et al. (2009)
	2002–2003	All cultivars (14)	50	64	26–159
	2003–2004	All cultivars (10)	54	97	26–280
	2004–2005	All cultivars (28)	99	67	15–223
	2005–2006	All cultivars (20)	64	54	5–109
	2006–2007	All cultivars (22)	91	49	< 5–105
		All DK samples	386	67	< 5–280
SE	1986	‘Magnum Bonum’	332	254	61–665	HPLC‐UV	Hellenäs et al. (1995a,b)
		Others (8 main‐crop cultivars)	105	108	35–315
	1987	‘Magnum Bonum’	16	151	60–293	HPLC‐UV	Hellenäs et al. (1995a,b)
		Others (8 early cultivars)	126	120	31–344
	1997	Main‐crop potatoes (8 cultivars)	113	105	36‐244	HPLC‐UV	Branzell and Hellenäs (1999)
		Early potatoes (7 cultivars)	127	98	35‐267
	2015	All cultivars (31)	38	95	24–277	HPLC‐UV	Swedish NFA (2016)
		All SE samples but excluding ‘Magnum Bonum’	509	107	24–344
UK	1980–1981	Foreign early potatoes (8 cultivars)	42	123	56–208	Colourimetric	Davies and Blincow (1984)
		UK early potatoes (5 cultivars)	28	115	70–212
		UK main‐crop potatoes (3 cultivars)	63	105	60–195
		All UK samples	133	113	56–212

LC: liquid chromatography; UV: ultraviolet.

^aFrom wholesale.

^bAverage as reported by the authors or calculated based on the provided individual data.