Antioxidant activities of two metallothionein-like proteins from sweet potato (Ipomoea batatas [L.] Lam. `Tainong 57’) storage roots and their synthesized peptides

Botanical Studies

Table 1 MT-I and MT-II peptides with antioxidative activity

Peptides	Scavenging activity of DPPH radicals (%), IC₅₀(μM)
GSH (control)	74.84
MT-I
MSSGCK	309.87
CGSDCK	1423.37
LTLEGSSEK	3925.54
ATEGGHACK	561.32
MT-II
CGNGCGGCK	300.76
TK	>4000
CDPCNCK	610.12