Process

Dry matter

(mg/100g WM)

Total oxalate

Soluble oxalate

Insoluble

oxalate

Total calcium (mg/100g WM)

Calcium bound in insoluble oxalate

(mg/100g WM)

Bound calcium

(%)

Whole stems with skin

6.28 ± 0.07ab

310.8 ± 3.3ab

180.6 ± 16.4a

(58.1)

130.1 ± 13.3a

87.3 ± 9.3a

40.7 ± 4.2a

46.7 ± 0.8a

Skin removed, washed

then sliced

6.11 ± 0.07b

299.3 ± 0.6b

174.8 ± 15.7a

(58.4)

124.5 ± 15.8a

84.2 ± 11.6a

39.0 ± 5.0a

46.4 ± 1.0a

Skin removed, then sliced

and washed

5.69 ± 0.09c

276.4 ± 3.3c

153.7 ± 8.1a

(55.6)

122.8 ± 11.4a

90.9 ± 6.2a

38.4 ± 3.6a

42.1 ± 1.0b

Skin removed and then sliced washed and wilted for 18 h

6.52 ± 0.04a

311.7 ± 2.4a

169.2 ± 11.6a

(54.3)

142.5 ± 9.3a

116.9 ± 5.3a

44.6 ± 2.9a

38.1 ± 0.7c