Egg Strings of Dolabella auricularia: Its in vitro Antioxidants and Antibacterial Activities

Asian Journal of Biological and Life Sciences,2021,10,2,340-345.
Published:September 2021
Type:Original Article
Author(s) affiliations:

Janeth Cuevas Tayone1,*, Romeo Macaltao Del Rosario2, Oliva Platero Canencia2, Wilanfranco Caballero Tayone1

1Institute of Agriculture and Life Sciences, Davao Oriental State University, City of Mati, Davao Oriental, PHILIPPINES.

2College of Science and Technology Education, University of Science and Technology of Southern Philippines, Lapasan, Cagayan de Oro, PHILIPPINES.


This study aimed to evaluate the antioxidants concentration and antimicrobial activities of the different crude extracts of egg strings from sea hare (Dolabella auricularia) taken from Guangguang, Pujada Bay, Davao Oriental. The determination of phenolics using the Aluminum chloride colorimetric method yielded 0.01 – 0.17 mg gallic acid equivalent / gram. On the other hand, Folin-ciocalteau assay for the total flavonoids gave a range of 6.27 – 8.83 mg quercetin/ gram. Furthermore, the antibacterial activity assay using the agar disk diffusion method gave a promising zone of inhibition for ethyl acetate extract against Staphylococcus aureus and Escherichia coli (20 mm and 26.56 mm, respectively). The findings of this work may add to the overall value of the nutritional and medicinal potential of the egg strings from sea hare.