In order to analyze and evaluate the difference in nutritive value of clams (Meretrix meretrix) with different shell colors and decorative patterns, the general nutritive components of clams with 3 kinds of shell colors and decorative patterns (white shell, red shell, black spot) were detected. Clams were dissected and sampled edible part as samples, and the contents of moisture, crude protein and crude fat, and the composition of amino acids and fatty acids of these samples were analyzed by adopting national standard methods. The results showed as follows: the contents of moisture, crude protein and crude fat in fresh samples of edible part in these clams were 81.15% to 81.89%, 9.23% to 9.71% and 1.31% to 1.91%, respectively. There were no significant differences in above eneral nutritive component contents among 3 kinds of clams (P>0.10). A total of 17 amino acids were detected in dry samples of edible part in these clams by adopting acid hydrolysis, and total amino acid (TAA) content was 42.95% to 48.45%, delicious amino acid (DAA) content was 17.44% to 20.88%, and the DAA content showed significantly higher in red shell clam than that in white shell clams (P<0.10). The first restrictive amino acid was valine in edible part of all clams. A total of 22 to 23 fatty acids were detected in dry samples of edible part in these clams, and the contents of polyunsaturated fatty acid (PUFA), eicosapentaenoic acid (EPA), ducosahexenoic acid (DHA) were 36.07% to 39.55%, 11.37% to 12.87% and 9.82% to 12.44%, respectively, and the EPA content in red color clams was significantly higher that in white shell clams (P<0.10), while the DHA content in red color clams was significantly higher that in white shell clams and black spot clams (P<0.10). In conclusion, the 3 kinds of clams in this survey all have a high nutritive value and the nutritive value of red shell clams is the highest, at the same time, the umami of red shell clams is the best.
GU Xiangfei
,
DONG Yinghui
,
YAO Hanhan
,
LIN Zhihua
. Analysis and Evaluation of General Nutritive Components of Clams (Meretrix meretrix) with Three Kinds of Shell Colors and Decorative Patterns[J]. Chinese Journal of Animal Nutrition, 2014
, 26(12)
: 3850
-3857
.
DOI: 10.3969/j.issn.1006-267x.2014.12.040
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