Korus A., Lisiewska Z. (2012) Effect of preliminary processing and method of preservation on the content of selected antioxidative compounds in kale (Brassica oleracea L. var. acephala) leaves. Food Chemistry 129:149-154

Abbreviation: KORUS 2012

Food Processing

This publication was used to obtain 48 retention factor values.

Retention Factor Food Before Processing Food After Processing Content Before Processing Content After Processing Units
0.43 Kale - Raw Kale - Blanched - 2.5 min at 96-98°C 14.3 7.7 mg/100 g fresh weight
0.40 Kale - Raw Kale - Blanched - 2.5 min at 96-98°C 59.64 30.51 mg/100 g fresh weight
0.57 Kale - Raw Kale - Blanched - 2.5 min at 96-98°C 41.54 30.06 mg/100 g fresh weight
0.47 Kale - Raw Kale - Blanched - 2.5 min at 96-98°C 11.35 6.74 mg/100 g fresh weight
0.53 Kale - Raw Kale - Blanched - 2.5 min at 96-98°C 17.62 11.89 mg/100 g fresh weight
0.35 Kale - Raw Kale - Blanched - 2.5 min at 96-98°C 240.44 107.67 mg/100 g fresh weight
0.26 Kale - Raw Kale - Cooked - 10 min at 100°C 14.3 4.74 mg/100 g fresh weight
0.24 Kale - Raw Kale - Cooked - 10 min at 100°C 59.64 18.36 mg/100 g fresh weight
0.28 Kale - Raw Kale - Cooked - 10 min at 100°C 41.54 14.84 mg/100 g fresh weight
0.14 Kale - Raw Kale - Cooked - 10 min at 100°C 11.35 2.08 mg/100 g fresh weight
0.25 Kale - Raw Kale - Cooked - 10 min at 100°C 17.62 5.72 mg/100 g fresh weight
0.19 Kale - Raw Kale - Cooked - 10 min at 100°C 240.44 58.32 mg/100 g fresh weight
0.86 Frozen kale - Blanched - 0 months storage at - 20°C Frozen kale - Blanched - 12 months storage at - 20°C 7.23 6.23 mg/100 g fresh weight
0.90 Frozen kale - Blanched - 0 months storage at - 30°C Frozen kale - Blanched - 12 months storage at - 30°C 7.36 6.64 mg/100 g fresh weight
0.90 Frozen kale - Cooked - 0 months storage at - 20°C Frozen kale - Cooked - 12 months storage at - 20°C 4.66 4.24 mg/100 g fresh weight
0.92 Frozen kale - Cooked - 0 months storage at - 30°C Frozen kale - Cooked - 12 months storage at - 30°C 4.69 4.32 mg/100 g fresh weight
0.96 Canned kale - From cut raw material - 0 months storage Canned kale - From cut raw material - 12 months storage 2.33 2.24 mg/100 g fresh weight
0.89 Canned kale - From ground raw material - 0 months storage Canned kale - From ground raw material - 12 months storage 2.7 2.42 mg/100 g fresh weight
0.94 Frozen kale - Blanched - 0 months storage at - 20°C Frozen kale - Blanched - 12 months storage at - 20°C 28.31 26.88 mg/100 g fresh weight
0.96 Frozen kale - Blanched - 0 months storage at - 30°C Frozen kale - Blanched - 12 months storage at - 30°C 28.87 27.9 mg/100 g fresh weight
0.90 Frozen kale - Cooked - 0 months storage at - 20°C Frozen kale - Cooked - 12 months storage at - 20°C 17.37 15.77 mg/100 g fresh weight
0.93 Frozen kale - Cooked - 0 months storage at - 30°C Frozen kale - Cooked - 12 months storage at - 30°C 18.08 16.92 mg/100 g fresh weight
0.94 Canned kale - From cut raw material - 0 months storage Canned kale - From cut raw material - 12 months storage 11.55 10.9 mg/100 g fresh weight
0.89 Canned kale - From ground raw material - 0 months storage Canned kale - From ground raw material - 12 months storage 12.84 11.43 mg/100 g fresh weight
0.90 Frozen kale - Blanched - 0 months storage at - 20°C Frozen kale - Blanched - 12 months storage at - 20°C 28.13 25.59 mg/100 g fresh weight
0.92 Frozen kale - Blanched - 0 months storage at - 30°C Frozen kale - Blanched - 12 months storage at - 30°C 28.95 26.72 mg/100 g fresh weight
0.96 Frozen kale - Cooked - 0 months storage at - 20°C Frozen kale - Cooked - 12 months storage at - 20°C 14.58 14.14 mg/100 g fresh weight
0.99 Frozen kale - Cooked - 0 months storage at - 30°C Frozen kale - Cooked - 12 months storage at - 30°C 14.63 14.57 mg/100 g fresh weight
0.95 Canned kale - From cut raw material - 0 months storage Canned kale - From cut raw material - 12 months storage 11.73 11.19 mg/100 g fresh weight
0.96 Canned kale - From ground raw material - 0 months storage Canned kale - From ground raw material - 12 months storage 12.2 11.78 mg/100 g fresh weight
0.96 Frozen kale - Blanched - 0 months storage at - 20°C Frozen kale - Blanched - 12 months storage at - 20°C 5.36 5.16 mg/100 g fresh weight
0.98 Frozen kale - Blanched - 0 months storage at - 30°C Frozen kale - Blanched - 12 months storage at - 30°C 5.58 5.49 mg/100 g fresh weight
0.93 Frozen kale - Cooked - 0 months storage at - 20°C Frozen kale - Cooked - 12 months storage at - 20°C 1.58 1.48 mg/100 g fresh weight
0.96 Frozen kale - Cooked - 0 months storage at - 30°C Frozen kale - Cooked - 12 months storage at - 30°C 1.55 1.5 mg/100 g fresh weight
0.93 Canned kale - From cut raw material - 0 months storage Canned kale - From cut raw material - 12 months storage 2.74 2.57 mg/100 g fresh weight
0.91 Canned kale - From ground raw material - 0 months storage Canned kale - From ground raw material - 12 months storage 2.84 2.59 mg/100 g fresh weight
0.90 Frozen kale - Blanched - 0 months storage at - 20°C Frozen kale - Blanched - 12 months storage at - 20°C 11.63 10.53 mg/100 g fresh weight
0.94 Frozen kale - Blanched - 0 months storage at - 30°C Frozen kale - Blanched - 12 months storage at - 30°C 11.82 11.12 mg/100 g fresh weight
0.96 Frozen kale - Cooked - 0 months storage at - 20°C Frozen kale - Cooked - 12 months storage at - 20°C 5.26 5.06 mg/100 g fresh weight
0.96 Frozen kale - Cooked - 0 months storage at - 30°C Frozen kale - Cooked - 12 months storage at - 30°C 5.62 5.41 mg/100 g fresh weight
0.90 Canned kale - From cut raw material - 0 months storage Canned kale - From cut raw material - 12 months storage 4.48 4.05 mg/100 g fresh weight
0.97 Canned kale - From ground raw material - 0 months storage Canned kale - From ground raw material - 12 months storage 4.44 4.32 mg/100 g fresh weight
0.82 Frozen kale - Blanched - 0 months storage at - 20°C Frozen kale - Blanched - 12 months storage at - 20°C 107.54 88.3 mg/100 g fresh weight
0.87 Frozen kale - Blanched - 0 months storage at - 30°C Frozen kale - Blanched - 12 months storage at - 30°C 107.03 93.42 mg/100 g fresh weight
0.74 Frozen kale - Cooked - 0 months storage at - 20°C Frozen kale - Cooked - 12 months storage at - 20°C 56.57 42.18 mg/100 g fresh weight
0.96 Frozen kale - Cooked - 0 months storage at - 30°C Frozen kale - Cooked - 12 months storage at - 30°C 56.84 54.88 mg/100 g fresh weight
0.96 Canned kale - From cut raw material - 0 months storage Canned kale - From cut raw material - 12 months storage 72.8 70.39 mg/100 g fresh weight
0.95 Canned kale - From ground raw material - 0 months storage Canned kale - From ground raw material - 12 months storage 74.67 71.54 mg/100 g fresh weight