Determination of total phenolic and flavonoid content, antimicrobial and antioxidant activity of a root extract of Arisaema jacquemontii Blume

Peer review under responsibility of Taibah University.

Figures & data

Table 2a Antibacterial activity of methanolic extract of A. jacquemontii of roots (MIC values expressed as mg/ml).

Microorganism	Root extract	Streptomycin
Proteus mirabilis	0.29 ± 0.015	0.056 ± 0.003
Streptococcus faecalis	0.41 ± 0.012	0.025 ± 0.002
Escherichia coli	0.34 ± 0.012	0.055 ± 0.004
Salmonella enteritidis	0.24 ± 0.014	0.020 ± 0.002
Micrococcus luteus	0.27 ± 0.008	0.020 ± 0.003
Enterobacter cloacae	0.35 ± 0.015	0.015 ± 0.004
Bacillus subtilis	0.28 ± 0.008	0.025 ± 0.003
Staphylococcus aureus	0.37 ± 0.012	0.025 ± 0.003
Pasturella multocida	0.32 ± 0.014	0.020 ± 0.003

Table 2b Antifungal activity of methanolic extract of A. jacquemontii roots (expressed as % inhibition of mycelium growth).

Sample	Fusarium oxysporum	Phythium ultimum	Rhizoctonia solani	Aspergillus flavus
Root extract	36.50	29.00	34.00	28.32
Benomyl	71.14	75.50	87.00	69.00

Each value is a mean of three biological replicates.

Table 1 Total phenolics and flavonoids content of methanolic extract of A. jacquemontii roots.

Total phenolics content^a	45 ± 1.7
Total flavonoids content^b	35.5 ± 2.2

a mg gallic acid equivalent (GAE)/g DW.

b mg rutin equivalent/g DW.

Values are means of three biological replicates.

Fig. 1 (a) Free radical scavenging activity, (b) superoxide scavenging activity, (c) ferrous reducing capacity of methanolic extracts of the roots of Arisaema jacquemontii. Ascorbic acid was included as a positive control. Each value is the mean ± standard deviation.