By. Jeong et al., Lipid classes and fatty acid compositions of wild and cultured sweet smeltPlecoglossus altivelis muscles and eggs in Korea, FISHERIES S, 66(4), 2000, pp. 716-724
Lipid classes and fatty acid compositions of the muscles and eggs of wild a
nd cultured sweet smelt in Korea from different habitats and fish culture f
arms were compared. Non-polar lipid (NL) content was in proportion to total
lipid (TL) content and higher in the cultured fish muscles and eggs than i
n the wild fish. Phospholipid (PL) content showed almost no difference betw
een the wild and cultured fish muscles. The fish eggs contained approximate
ly three times as much PL as the fish muscles. The prominent NL classes of
the fish muscles were triglyceride (TG) and free sterol (ST), and additiona
lly, sterol ester (SE) was one of the prominent NL classes in the fish eggs
. Each of the cultured fish muscles or eggs had proportions higher in TG an
d lower in ST compared with those of wild fish, respectively. These NL clas
s proportions in fish muscles showed almost no difference in association wi
th their wild habitats, fish culture farms as well as sex, while those in t
he fish eggs differed significantly. The PL class proportions of the fish m
uscles were similar in all samples, except those of the fish cultured in Mi
ryang City. The wild fish muscles were rich in 16:1n-7, 18:3n-3 and 20:5n-3
, whereas the fatty acid proportions showed almost no differences between f
ish habitats. The cultured fish muscles were rich in 18:1n-9, 18:2n-6, and
22:6n-3, in which the fatty acid proportions showed significant difference
between fish farms due to different diets.