S.M. Jung, S.G. Kang, J.H. Jeon,
J.S. Son, H.J. Lee, T.H. Park,
S.H. Han, W.B. Jeon and
H.W. Shin* ??
Department of Life
Science and Biotechnology, Soonchunhyang University, Asan City, Choongnam Do,
336-745, South Korea
Author Email :
Aim: Pyropia yezoensis is a widely
consumed edible seaweed that contains substantial carbohydrates, proteins,
lipids, amino acids and minerals. In this study, the proximate composition,
amino acid content and mineral content of P. yezoensis were compared
at two culture sites in South Korea (Goheung and Gunsan) during same time
Methodology: This study
followed AOAC methods for proximate composition. Amino acid and mineral were
analyzed by amino acid analyzer and inductively coupled plasma.
Results: The highest
measured protein contents were 39.66?0.49% in December at Goheung and
38.77?0.59% in January at Gunsan. Proximate compositions did not differ
significantly between Gunsan and Goheung. Among amino acids, isoleucine,
leucine, threonine, lysine, histidine and valine were present at higher
concentrations during November and December harvesting periods. The levels of
Ca and P were higher in Pyropia at Gunsan from November to February compared
with Pyropia at Goheung.
Interpretation: Clear temporal
and spatial variations were observed in amino acid and mineral contents, but
not in proximate composition. Our study provides important information about
the nutritive properties of P. yezoensis.
Key words: Amino acids, Carbohydrate, Pyropia yezoensis,