Changes in some Physical and Chemical Properties of Black Mulberry (Morus nigra L.) Concentrate during Storage

Table 2

Total monomeric anthocyanin, total phenolic content, and antioxidant activity of the black mulberry concentrate.

Sample	Storage time (A), day	Total phenolic content (μg GAE/mg)	Total monomeric anthocyanin (mg/L)	DPPH (IC50, μg/ml)	ABTS (IC50, μg/ml)
Black mulberry concentrate	0	^b		^b	^b
	20	^b		^b	^a
	40	^b		^b	^b
	60	^a		^a	^b
	Significance		Ns
	Storage temperature (B)
Black mulberry concentrate	Room temperature ()	^b	^b	^a
	Refrigerator temperature ()	^a	^a	^b
	Significance				Ns
	A X B		Ns		Ns
	Storage time (A), day
BHA	0	—	—
	20	—	—
	40	—	—
	60	—	—
BHT	0	—	—
	20	—	—
	40	—	—
	60	—	—
Trolox	0	—	—
	20	—	—
	40	—	—
	60	—	—
α-Tocopherol	0	—	—
	20	—	—
	40	—	—
	60	—	—

a-b means with different letters in the same column are significantly different (); Ns: not significant (); ; .