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

Table 2

Micronutrient composition of traditional preserved cowpea leaves (mg/100 g dry matter basis).

Processing technique	Beta-carotene	Vitamin C	Zinc	Iron	Calcium	Sodium
S1	4.13 ± 1.96^ab	27.99 ± 7.06^b	2.27 ± 0.92^a	15.18 ± 6.11^b	36.30 ± 6.31^b	16.60 ± 5.89^b
S2	8.40 ± 8.17^a	90.56 ± 33.57^a	5.59 ± 4.53^a	75.93 ± 18.80^a	51.34 ± 3.12^a	75.84 ± 19.52^a
S3	3.55 ± 0.57^ab	66.92 ± 11.41^a	2.06 ± 1.89^a	21.79 ± 5.77^b	38.73 ± 6.97^b	16.42 ± 1.53^b
S4	2.65 ± 0.95^a	21.80 ± 1.24^b	3.31 ± 0.77^a	32.94 ± 7.84^b	36.78 ± 6.18^b	16.68 ± 1.67^b
%CV	78.8	30.2	58.2	71.7	15.6	61.2
HSD	4.46	55.6	3.29	34.2	10.1	30.2
value	0.032	<0.001	0.294	<0.001	0.003	0.034

The values are mean ± SD of duplicates. Values with different letters in the superscript along the column are statistically different. S1, blanched sun dried; S2, fresh leaves; S3, shadow dried; S4, unblanched sun dried.