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4265605 
Journal Article 
Mineral, vitamin C and crude protein contents in kale (Brassica oleraceae var. acephala) at different harvesting stages 
Acikgoz, FE 
2011 
Yes 
African Journal of Biotechnology
ISSN: 1684-5315 
ACADEMIC JOURNALS 
VICTORIA ISLAND 
10 
75 
17170-17174 
WOS:000298561700015 
This study compares mineral, vitamin C and crude protein contents at different harvesting stages in kale (Brassica oleraceae var. acephala). Three different harvest periods as first harvest stage (at the rosette stage), second harvest stage (at the budding stage) and third harvest stage (at the flowering/blooming stage) were utilized in the study. The results of the study presented the highest values as follows: Third harvesting stage for vitamin C with 109.43 mg 100 g(-1); first stage for crude protein value of 35.00%; first harvesting stage for nitrogen (N) and iron (Fe) with 5.60% and 15.31 mg 100 g(-1), respectively; and second harvesting stage for phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), manganese (Mn), cupper (Cu), and zinc (Zn) as 0.57, 4.62, 2.67, 0.38%, and 15.63, 0.20, 2.12 mg 100 g(-1) respectively. In conclusion, kale is a relatively good source of abundant antioxidants with its vitamin C, crude protein and mineral contents. The study propounds that kale can be consumed as a choice of fundamental nutrients selections and it would be worth considering the harvesting stage of maturity. 
Kale (Brassica oleracea var. acephala); harvesting stage; vitamin C; crude protein; mineral content