MODIFICATION OF PLASMA AND HEPATIC LIPIDS OF GUINEA-PIGS BY FEEDING HIGH OLEIC-ACID PORK COMPARED WITH REGULAR PORK
MODIFICATION OF PLASMA AND HEPATIC LIPIDS OF GUINEA-PIGS BY FEEDING HIGH OLEIC-ACID PORK COMPARED WITH REGULAR PORK
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DOI：
10.1093/jn/122.9.1855
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发表时间：
1992-09-01
影响因子：
4.2
通讯作者：
RHEE, KS
中科院分区：
文献类型：
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作者：
FLYNN, TT;KUBENA, KS;RHEE, KS
像猪这样的单胃动物的肉可以用单不饱和脂肪酸代替饱和脂肪酸。由于与饱和脂肪酸相比，单不饱和脂肪酸对血清脂质有有益的影响，因此本研究的目的是评估改良猪肉与普通猪肉相比对血清和肝脏脂质的影响。豚鼠的饲粮中含有来自对照组饲粮猪的猪肉，或来自饲粮中含有高油酸葵花籽油的猪的猪肉。在每100 g饲粮4和15 g的水平上，猪肉提供了饲粮中几乎所有的脂肪，10%或34%的能量。高油酸猪肉肌肉和脂肪的棕榈酸和硬脂酸（主要饱和脂肪酸）含量分别比普通猪肉肌肉和脂肪低26%和46%，油酸（主要单不饱和脂肪酸）含量分别比普通猪肉肌肉和脂肪高31%和29%。饮食中的胆固醇浓度从0.06%到0.08%不等。尽管血清总胆固醇、高密度脂蛋白胆固醇和甘油三酯浓度没有因猪肉类型而异，但结果表明，与对照组猪肉15%脂肪组相比，高油质猪肉15%脂肪组血清LDL胆固醇较低（15%），肝脏胆固醇较高（15%）。此外，15%脂肪组的血清低密度脂蛋白胆固醇浓度高于4%脂肪组。在本研究中，猪肉经改性后，油酸含量增加，饱和脂肪酸含量减少，饲喂动物后对组织脂质有积极影响。
Meat from such monogastric animals as swine can be modified to substitute monounsaturated fatty acids for saturated fatty acids. Because monounsaturated fatty acids have a beneficial effect on serum lipids as compared with saturated fatty acids, the objective of this study was to assess the effect of modified pork as compared with regular pork on serum and hepatic lipids. Guinea pigs were fed diets containing pork from control diet-fed hogs or from hogs fed a diet containing high oleic acid sunflower oil. The pork provided almost all of the fat in the diets at the level of 4 and 15 g/100 g diet, 10 or 34% energy. The high oleic pork muscle and fat contained 26 and 46% less palmitic and stearic acids (the primary saturated fatty acids), respectively, and 31 and 29% more oleic acid (the primary monounsaturated fatty acid) than the regular pork muscle and fat, respectively. Cholesterol concentration of diets ranged from 0.06 to 0.08% of the diet. Although total serum cholesterol, HDL cholesterol and triglyceride concentrations did not differ due to type of pork, results indicated that serum LDL cholesterol was lower (15%) and hepatic cholesterol was greater (15%) in the high oleic pork, 15% fat group as compared with the control pork 15% fat group. Also, serum LDL cholesterol concentration was higher in the groups fed 15% fat compared with those fed 4% fat. In this study pork modified to have more oleic acid and less saturated fatty acids had a positive effect on tissue lipids when fed to animals.