Table 1.

Total glycoalkaloids (TGA) concentration (mg/kg fresh weight (fw)) in various cultivated potato (S. tuberosum) plant partsa

Plant part	Concentration range (mg/kg fw)	Original Referencea
Flowers	2,150–5,000	(1), (2)
Leaves	230–1,000	(3)
Stems	23–33	(4)
Roots	180–400	(4)
Bitter‐tasting tubers	250–800	(5)
Whole tuber	10–150	(6)
Skin (2–3% of tuber)	300–640	(1), (2)
Peel (10–12% of tuber)	150–168	(1), (2)
Cortex	125	(6)
Flesh	12–100	(1), (2)
Pithb	Not detected–0.1	(6)
Sprout	2,000–7,300	(1), (2)

^aFrom Milner et al. (2011), who collected the information from several research articles given in the review. Original references: (1) Lampitt et al. (1943), (2) Van Gelder (1991), (3) Kozukue et al. (1987), (4) Sinden et al. (1984), (5) Zitnak (1961), (6) Kozukue and Mizuno (1990).

^bThe pith is the centre of the tuber tissue and may be angular with rays extending to each node (also called eyes, Lee and De Luca, 2019) and is relatively low in starch content (Van Denburgh et al., 1986; Dean, 1994).