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consumed to cover the daily requirements of adult man (GDR) and
the percentage satisfaction of the daily requirements of adult man
(PS/150%) of canned fillets with oil. Results showed that 150g was
enough for GDR and PS/150% in relation to USRDA (1989). The
restricting EAA was threonine (5670g GDR and 3g PS) at zero time
of storage, while phenylalanine + tyrosine (2993g GDR and 5g PS)
was a RAA at the end of storage. However, some EAA were covered
at a high proportion such as leucine (47g GDR and 319g PS), and
methionine + cystine (54g GDR and 278g PS) at zero time of storage,
while isoleucine (32g GDR and 469g PS) and valine (64g GDR
and 234g PS) were found at the end of storage. These changes in
protein quality of canned carp in oil filling medium were affected by
extending storage period. Similar findings were reported by El-Sherif
(2001) and Abd- El-Ghafour (2004).
4- Conclusion
In conclusion, the quality parameters of carp fillets were largely
affected by pre-storage and canning conditions. Canned carp fillets
in oil are considered the best treatment; due to its sensory scores
comparing with others. Also, canning process could be completely
reduced of histidine which was found in frozen samples however,
extending storage period led to reformation of it.
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