鸡肉肌苷酸和肌内脂肪沉积规律研究

鸡肉肌苷酸（IMP）和肌内脂肪（IMF）含量与鸡肉风味品质密切相关，脂肪决定了鸡肉特殊的肉香味，而肌苷酸是一种重要的滋味物质。不同的消费者对肉鸡的品种、年龄、性别乃至部位都有不同偏好，这除了与风俗习惯有关外，更重要的是对品质和风味特性的选择。本研究通过比较不同品种、性别、日龄和部位的鸡肉IMP和IMF的含量，旨在探讨IMP和IMF的沉积规律，为确定风味性状选择方法提供依据。

Studies on the Characteristics of Deposition of Chicken IMP and IMF

The characteristics of deposition of chicken IMP and IMF were investigated in this experiment. Arbor Acres (AA) and Beijing Fatty Chickens (n=200, respectively) were raised under the same condition and were slaughtered at 28 d, 56 d and 90 d to assay the content of IMP and IMF in breast and leg muscle. The results showed that the IMP content of Beijing Fatty Chicken was significantly higher than that of AA (P<0.01), and also significant difference existed between them in IMF (P<0.01). The IMP content in breast muscle was higher than that in leg muscle (P<0.01), while the IMF was inverse (P<0.01). IMP content of female was a little bit higher than that of male (P>0.05). IMF content varied with growth rate, and showed no association with sex. IMF content increased with age, while IMP did not.