Table 2 Effect of different impregnation treatments on the color of blanched Shepherd’s purse

CK

43.49 ± 0.80^b

-15.07 ± 0.67^ab

34.64 ± 3.45^abc

7.65 ± 0.56^a

Ca

43.87 ± 1.64^b

-14.84 ± 1.08^a

32.05 ± 3.25^bc

6.93 ± 0.34^a

Gl

44.01 ± 0.65^b

-14.62 ± 1.06^ab

31.77 ± 1.98^bc

6.26 ± 0.75^ab

Gl + Ca + US5

49.12 ± 1.06^a

-15.61 ± 0.55^bcd

33.48 ± 2.45^abc

4.54 ± 1.07^bc

Gl + Ca + US15

46.76 ± 1.06^a

-13.55 ± 0.56^a

30.08 ± 0.99^c

3.92 ± 0.93^c

Al

47.68 ± 1.49^a

-16.28 ± 0.89^c

37.54 ± 2.11^a

7.35 ± 1.84^a

Al + Ca + US5

48.64 ± 2.11^a

-16.82 ± 0.31^d

35.45 ± 1.84^ab

6.45 ± 0.31^a

Al + Ca + US15

48.09 ± 1.16^a

-16.21 ± 0.64^bc

31.90 ± 1.12^bc

3.90 ± 0.28^c