Page 58 - Aquauclature Research and Studies (01)

AQUAUCLATURE
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Research and Studies 1 (1): 15-01, 2026 page of 193

but were deficient in cysteine. Therefore, unsaturated fatty acids (USFAs) are
essential nutrients. The results of several studies have demonstrated the pres-
ence of USFAs in algal lipids. Patel et al. (2005) concluded that USFAs were
present in algal lipids; they were also considered sources and outputs of
USFAs for the aquaculture industry. Oleic acid was also reported in N. oce-
anica, and these results are consistent with those reported by Xiao et al., 2013.
Furthermore, Gerasimenko et al., 2010, reported that algal lipids could be a
source of ω-3 and ω-6 polyunsaturated fatty acids. In this work, ω-6 polyun-
saturated fatty acids were detected at approximately intermediate concentra-
tions, and ω-3 polyunsaturated fatty acids were low in the studied N. ocean-
ica.
The main components of SFAs in the studied N.oceanica were Myristic
acid (C14:0), Palmitic acid (C16:0), Stearic acid (C18:0). Xiao et al. (2013);
Xiao-Nian et al. (2016) declared that palmitic acid is the major constituent in
the crude lipids of the N.oceanica. Accordingly, Bakhtiarvandi et al. (2014)
stated that, SFAs are used as a substrate for energy. These results were also
in conformity with finding of (Elkassas et al., 2016) for Chlorella sp. They
reported that after oil extraction, there were no significant losses in the other
considering algae metabolites, saturated fats were the main constituents in the
fatty acids methyl esters FAMEs, meaning that Palmitic and stearic acids
were dominant. Meanwhile, amino acid contents of the experimental marine
Chlorella species were contained lysine, methionine and histidine; but were
deficient in cysteine. Therefore, the USFAs are essential elements of nutri-
tion. The results of many studies have shown the presence of UFA in algae
fats. Patil et al. (2005) concluded the presence of UFAs in algae lipids; they
have been considered as well springs and outputs of PUFAs for aquaculture
industry.
Also, Oleic acid was recorded in N.oceanica, these results are consistent
with those reported (Xiao et al., 2013). Moreover, (Gerasimenko et al., 2010)
reported that algae fats can be a source of PUFAs of the ω-3 and ω-6 series.
In this work, PUFAsω6 was detected with approximately medium concentra-
tions and the ω-3 was low in N. oceanica studied.