Comparative Characterization of Trends and Patterns of Physical and Chemical Attributes of Optimal and Traditional Processed Cowpea Leaves

Table 5

Normalized means of clustered nutrient and antinutrient composition of cowpea leaves harvested at different maturity stages.

Chemical composition	Cluster 1	Cluster 2	Cluster 3
Moisture content (g)	0.86	0.26	−0.83
Crude protein (g)	0.47	0.28	−0.65
Crude ash (g)	1.36	-0.43	−0.03
Crude fat	−0.72	0.62	−0.57
Crude fibre	2.02	-0.46	−0.32
Carbohydrate (g)	−1.33	0.49	−0.08
Beta-carotene (mg)	0.18	0.75	−1.22
Vitamin C (mg)	0.07	−0.34	0.47
Nitrates (mg)	−0.24	−0.42	0.75
Oxalates (mg)	−1.15	0.58	−0.29
Total phenolics (mg)	1.43	−0.24	−0.35
Flavonoids (mg)	1.06	−0.02	−0.49
Zinc (mg)	1.96	0.62	−0.05
Iron (mg)	1.30	0.10	−0.49
Sodium (mg)	0.63	0.44	−0.98
Calcium (mg)	2.08	−0.44	−0.39
Total antioxidant (μM TE)	−0.57	0.85	−1.00