Table 1.
Chemical composition of total seed material (T), protein isolate (I) and protein hydrolysate (H), isolated from black, red, and white kidney bean seeds.
| Chemical Composition (%) | Black Kidney Bean | Red Kidney Bean | White Kidney Bean | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Material Status | T | I | H | T | I | H | T | I | H |
| Protein | 24.5 ± 0.1 c | 91 ± 1.1 a | 88 ± 0.7 ab | 22.7 ± 0.7 cd | 88.9 ± 1.2 ab | 85 ± 1 b | 21.3 ± 0.6 d | 85 ± 0.9 b | 82 ± 0.6 bc |
| Carbohydrates | 62.1 ± 0.3 ab | 32.5 ± 0.4 c | 4.7 ± 0.1 e | 65.1 ± 0.8 a | 36.7 ± 0.8 b | 8.7 ± 0.2 d | 64.2 ± 0.8 a | 37.2 ± 0.5 b | 8.3 ± 0.1 d |
| Fat | 2.1 ± 0.1 b | ND | ND | 2.5 ± 0.1 ab | ND | ND | 3.1 ± 0.1 a | ND | ND |
| Ash | 4.5 ± 0.3 d | 6.4 ± 0.1 b | 7.3 ± 0.2 ab | 4.19 ± 0.2 d | 5.7 ± 0.1 c | 6.5 ± 0.1 b | 5.1 ± 0.2 cd | 7.2 ± 0.2 ab | 9.4 ± 0.1 a |
| Moisture | 5.8 ± 0.1 b | 3.1 ± 0.1 cd | ND | 6.14 ± 0.2 ab | 3.5 ± 0.1 c | 0.88 ± 0.03 e | 6.45 ± 0.1 a | 1.5 ± 0.01 d | 0.98 ± 0.02 e |
ND, not detected. All values are expressed as means ± SD; Means with different lowercase letters in the same row indicate significant differences at p ≤ 0.05 by LSD. T is the total material. I is the protein isolate. H (protein hydrolysate) is obtained after 30-min hydrolysis with Alcalase at 37 °C.