Comparison of Glycogen Content from Three Philippine Mussels

Abstract

This study was conducted to measure and compare the glycogen content in three Philippine mussels of the family Mytilidae – Perna viridis, Mytella strigata, and Modiolus philippinarum. P. viridis, M. strigata, and M. philippinarum were collected from the provinces of Samar, Cavite, and Iloilo, respectively. P. viridis, locally known as "tahong," is cultured in the Philippines. M. strigata, known as "charru" or black mussel, has a distinct brown to black shell coloration that varies with age and is currently considered as an invasive species in the Philippines. Lastly, M. philippinarum mostly inhabits intertidal mudflats, that form extensive aggregates. These mussels are edible and are a well-known cheap source of animal protein. Extraction of glycogen involved mussel meat preparation, the addition of hydrolyzing agents, and precipitation. Results showed glycogen content varies in different species from 5.5–3.0% yield. This study is a contribution to the lack of recorded biological information regarding Philippine mussels in terms of biochemical content such as glycogen. This information can later be used to assess the mussels’ health, biological, and habitat ecological status.