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Table 1 Different phytochemical tests for aqueous methanolic extract of Olax nana

From: HPLC-DAD finger printing, antioxidant, cholinesterase, and α-glucosidase inhibitory potentials of a novel plant Olax nana

S. No

Phytochemical tests

Observations

Results

1

Alkaloids

ppt.

+

2

Flavonoids

Formation of yellow color which changed to colorless on acid addition

+

3

Glycosides

Reddish ppt. is not formed

-

4

Tannins

Formation of bluish-black color

+

5

Sterols

green to pink color was absent

+

6

Saponins

frothing bubbles are formed

+

7

Anthraquinones

Red, violet or pink color are not formed in aqueous layer

-

8

Terpenoids

Appearance of reddish brown color

+