Table 5.
Folate content (μg ± SD 100 g−1) in dried faba beans (48 h, 25°C) during the novel industrial canning process with a pregermination step
| Fresh weight |
Dry weight |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Processing step | DM | H4folate | 5-CH3–H4folate | 10-HCO–PteGlu | 5-HCO–H4folate | Sum as PteGlu | H4folate | 5-CH3–H4folate | 10-HCO–PteGlu | 5-HCO–H4folate | Sum as PteGlu | % relative content as PteGlu1 |
| Raw | 90 ± 1.0 | 18 ± 0.5 | 61 ± 6.4 | 10 ± 0.6 | 61 ± 4.1 | 142 ± 10 | 20 ± 0.6 | 67 ± 7.1 | 11 ± 0.7 | 67 ± 4.5 | 157 ± 6.9C | 100% |
| Germinated | 38 ± 0.1 | 10 ± 0.9 | 45 ± 2.4 | 9 ± 2.8 | 23 ± 2.03 | 84 ± 7.9 | 28 ± 2.6 | 120 ± 6.6 | 24 ± 7.6 | 62 ± 5.4 | 223 ± 21A | 142% |
| Autoclaved | 21 ± 0.1 | 5 ± 0.4 | 14 ± 0.5 | 5 ± 0.3 | 18 ± 0.4 | 40 ± 1.2 | 25 ± 2.1 | 67 ± 2.5 | 25 ± 1.5 | 87 ± 1.5 | 194 ± 3.7B | 124% |
| Canning medium2 | 2 ± 0.2 | 17 ± 1.7 | 3 ± 0.4 | 4 ± 0.9 | 25 ± 1.5 | |||||||
Individual folate values are means of duplicate samples and duplicate analyses (n = 2). The sum of folates was calculated from individual folate forms using the conversion factors 445.4 for tetrahydrofolate (H4folate), 459.5 for 5-methyl-tetrahydrofolate (5-CH3–H4folate), 469.4 for 10-formyl folic acid (10-HCO–PteGlu) and 473.5 for 5-formyl-tetrahydrofolate (5-HCO–H4folate). Different superscripts within the same column represent significant differences (P < 0.05) on a dry matter basis. DM, dry matter.
The relative content was calculated for the sum of PteGlu on dry weight basis.
Drained weight of beans was 290 ± 5 g and of canning medium 100 ± 5 g.