• BHUVANESWARI .S
• SUBASHINI .G
• GAYATHRI .C

To investigate and evaluate the antibacterial activity, larvicidal activity, and antioxidant of methanol, chloroform, diethyl ether extracts of brown seaweed Turbineria ornate (phaephyceae) from Mandapam coastal region of Rameshwaram. The seaweed was extracted by two types methods namely soxhlet extraction and crude extraction. The extracts of Turbineria ornate were tested for their antibacterial activity against five multidrug resistant both gram positive and gram negative bacterial isolates from diabetic foot ulcers. The highest inhibition activity among the two types of extracts is obtained with the Turbineria orneta in soxhlet MeOH extract showed a zone of inhibition in maximum of 16 mm against Bacillus sp., and E. coli whereas a minimum of 13 mm was observed in Pseudomonas aeroginosa in 60 μg ml-1. The larvicidal activity of methanol, chloroform, and diethyl ether extracts against early 4th in star larva of Aedes agypti by using WHO standard values and the concentration of 200, 400,600, 800, 1000ppm. The mortality of larva was made 24hrs and 48hrs after treated with seaweed extraction. Among the seaweed extract, the methanol showed highest mortality of larvae with LC50 value 54.2±1.09 in 1000ppm. The functional group of Turbineria ornate was characterized by FT-IR, it has carboxyl bond, uranic acid, sulfate groups, and glycosidic linkages. The antioxidant activity was carried by free radical scavenging DPPH method standard with ascorbic acid, the methanol extract was 88.85±13.42. Turbineria ornate also has tannin, polyphenol, glycosides, saponins. It was done by phytochemical analysis. Altogether, these results confirms the seaweed have strong antibacterial, larvicidal activity .

Turbineria ornate, Aedes agypti, antibacterial, larvicidal activity,Antioxidant activity.

"ANTIBACTERIAL, ANTI OXIDANT, LARVICIDIL ACTIVITY OF SEAWEED EXTRACT (TURBINERIA ORNATA) AGAINST BACTERIAL ISOLATES FROM DIABETIC FOOT ULCER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.546-555, May-2019, Available :http://www.jetir.org/papers/JETIR1905588.pdf

"ANTIBACTERIAL, ANTI OXIDANT, LARVICIDIL ACTIVITY OF SEAWEED EXTRACT (TURBINERIA ORNATA) AGAINST BACTERIAL ISOLATES FROM DIABETIC FOOT ULCER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp546-555, May-2019, Available at : http://www.jetir.org/papers/JETIR1905588.pdf