Abstract

The determination of the carnosine level in fish muscle tissues is helpful for the purposes of general biology and comparative muscle physiology of various fish species; it may be also useful for estimation of the nutritional value of fish products. The mass-spectrometric method of the determination of carnosine in muscle tissues has been improved and tested in this work. The carnosine levels in the muscles of the Russian sturgeon, Siberian sturgeon, sterlet, hybrid of sterlet and kaluga, hybrid of Siberian sturgeon and kaluga have been determined for the first time with this method. The starlet-and-kaluga hybrid, regardless of sex, contains 3.33 times more carnosine than the sterlet (p < 0.01). The female hybrid of Siberian sturgeon and kaluga contains 1.50 times less carnosine than the female Siberian sturgeon (p < 0.1). Since carnosine consumption is important for carnosine biosynthesis in human muscles, the hybridization of sterlet with kaluga is more efficient in terms of nutrition value than pure sterlet breeding, and the hybridization of Siberian sturgeon with kaluga is less effective than sturgeon breeding.

中文翻译：

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of鱼及其杂种肌肉组织中肌肽水平

摘要

确定鱼肌肉组织中肌肽水平有助于各种鱼类的一般生物学和比较性肌肉生理学；它对估计鱼产品的营养价值也可能有用。在这项工作中，测定肌肉组织中肌肽的质谱方法已得到改进和测试。用这种方法首次确定了俄罗斯st，西伯利亚st 、,、,和卡卢加的杂种，西伯利亚and和卡卢加的杂种中的肌肽水平。不论性别，这种新星和卡卢加杂种所含的肌肽含量均比小蛋白多3.33倍（p<0.01）。西伯利亚st和卡卢加的雌性杂种肌肽的含量比西伯利亚雌性less鱼少1.50倍（p <0.1）。由于食用肌肽对人体肌肉肌氨酸的生物合成很重要，因此，在营养价值方面，与卡卢加的杂交比纯的繁殖更有效，西伯利亚st与卡卢加的杂交比than繁殖不那么有效。