Table 1.

Percentage yield, phytochemical screening, and quantitative phytochemical standardization of EECN.

Percentage yield	11.78% (w/w)
Phytochemical screening
Alkaloids	+
Flavonoids	+
Tannins	+
Glycosides	+
Triterpenoids	+
Carbohydrates	+
Steroids	−
Saponins	−
Standardization of content of phytochemicals
Total polyphenolic contenta	238.64 ± 1.29
Total flavonoid contentb	61.39 ± 0.57

For phytochemical screening: (+) presence of phytoconstituents and (−) absence of phytoconstituents; values of standardization of the content of the phytochemicals represent mean ± SD (n = 3). ^aExpressed as mg of gallic acid equivalents (GAE)/g of the dry extract. ^bExpressed as mg of quercetin equivalents (QE)/g of the dry extract.