TY - JOUR
T1 - Contenido de humedad, lípidos totales y ácidos grasos del músculo longissimus crudo de bovinos en Venezuela
AU - Uzcátegui B, Soján
AU - Huerta-Leidenz, Nelson
AU - De Moreno, Lilia Arenas
AU - Colina, Gilberto
AU - Jerez-Timaure, Nancy
PY - 1999/6
Y1 - 1999/6
N2 - Moisture, total lipids and fatty acids in raw longissimus muscle from Venezuelan cattle. Randomly selected groups of slaughter cattle, crossbreds of dairy (n=14) and zebu (n=131) types were classified by age (2.5, 3.0, 3.5 and 4.0 yr., estimated by dentition), and carcass fatness (as described by different criterion, including marbling levels) to study variation in moisture (M), lipid (L), and fatty acid (FA) contents (g/100g of fresh tissue) of longissimus muscle trimmed to zero fat cover. Overall means ± standard deviations per 100 g of raw product for M and L were 73.9±1.36 and 2.9±1.04, respectively. Analyses of variance by the least squares (LS) method showed age, breed type, marbling, backfat thickness and carcass finish affected (p<0.05) fatty acid (FA) profiles. The oldest cattle group (4 yr. or older) trended to present a lower intramuscular lipid content (2.72 g/100g) and showed the highest (2.04) unsaturation (unsaturated/saturated FA) index (p<0.05). Breed type had little effect on the FA profile. Comparison of LS means showed intramuscular concentrations of myristic and linolenic acids were slightly higher in samples from dairy types (p<0.05). Carcasses with poor, "patch-like" fat distribution, showed muscles with the highest (0.16) polyunsaturated/saturated FA index (p<0.05). Unsaturation indexes for trimmed beef samples with the prevailing marbling levels (1.76 for "Traces" to 1.92 for "Devoid") show a clear predominance of unsaturates, relatively larger than that estimated from compositional FA data reported for the same cut in the United States.
AB - Moisture, total lipids and fatty acids in raw longissimus muscle from Venezuelan cattle. Randomly selected groups of slaughter cattle, crossbreds of dairy (n=14) and zebu (n=131) types were classified by age (2.5, 3.0, 3.5 and 4.0 yr., estimated by dentition), and carcass fatness (as described by different criterion, including marbling levels) to study variation in moisture (M), lipid (L), and fatty acid (FA) contents (g/100g of fresh tissue) of longissimus muscle trimmed to zero fat cover. Overall means ± standard deviations per 100 g of raw product for M and L were 73.9±1.36 and 2.9±1.04, respectively. Analyses of variance by the least squares (LS) method showed age, breed type, marbling, backfat thickness and carcass finish affected (p<0.05) fatty acid (FA) profiles. The oldest cattle group (4 yr. or older) trended to present a lower intramuscular lipid content (2.72 g/100g) and showed the highest (2.04) unsaturation (unsaturated/saturated FA) index (p<0.05). Breed type had little effect on the FA profile. Comparison of LS means showed intramuscular concentrations of myristic and linolenic acids were slightly higher in samples from dairy types (p<0.05). Carcasses with poor, "patch-like" fat distribution, showed muscles with the highest (0.16) polyunsaturated/saturated FA index (p<0.05). Unsaturation indexes for trimmed beef samples with the prevailing marbling levels (1.76 for "Traces" to 1.92 for "Devoid") show a clear predominance of unsaturates, relatively larger than that estimated from compositional FA data reported for the same cut in the United States.
KW - Beef
KW - Breed types
KW - Fatty acid
KW - Longissimus
KW - Meat
UR - http://www.scopus.com/inward/record.url?scp=0033146997&partnerID=8YFLogxK
M3 - Artículo
C2 - 10488398
AN - SCOPUS:0033146997
SN - 0004-0622
VL - 49
SP - 171
EP - 180
JO - Archivos Latinoamericanos de Nutricion
JF - Archivos Latinoamericanos de Nutricion
IS - 2
ER -