本文關(guān)鍵詞： 大骨節(jié)病 元素 氨基酸 營養(yǎng)價值評價　出處：《四川農(nóng)業(yè)大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：通過對阿壩病區(qū)居民經(jīng)常食用且具有代表性的青稞、糌粑、奶渣和牛奶中15種元素及17種氨基酸含量進(jìn)行了統(tǒng)計(jì)分析,并對重病區(qū)、中病區(qū),輕病區(qū)、非病區(qū)中元素和氨基酸含量進(jìn)行了對比分析,還對青稞,糌粑、牛奶和奶渣中的蛋白質(zhì)進(jìn)行了營養(yǎng)價值評價,了解病區(qū)居民膳食的營養(yǎng)價值,對病區(qū)居民膳食營養(yǎng)改善提供一定的建議,為大骨節(jié)病病因研究及預(yù)防提供一定的科學(xué)依據(jù)。主要研究結(jié)果如下： 1.青稞中各病區(qū)間有多種元素差異顯著(P0.05),病區(qū)膳食中銅、鐵元素含量較高,其中青稞中鉻元素含量較高,重病區(qū)、中病區(qū)、輕病區(qū)、非病區(qū)鉻含量分別為4.004mg/kg、2.465mg/kg、2.254mg/kg、2.382mg/kg,超過《食品中污染物限量》標(biāo)準(zhǔn)規(guī)定的谷物中鉻S1.Omg/kg,超標(biāo)率100%,重病區(qū)青稞中鉻含量是標(biāo)準(zhǔn)的4倍,將青稞制成糌粑,重病區(qū)、中病區(qū)、輕病區(qū)、非病區(qū)的鉻含量分別為0.152mg/kg、0.201mg/kg、0.190mg/kg、0.162mg/kg,明顯降低了鉻元素的含量,而將牛奶制作成奶渣卻顯著提高了鉻的含量,重病區(qū)、中病區(qū)鉻含量分別為1.646mg/kg、1.890mg/kg接近《食品中污染物限量》中對奶粉中鉻≤2.0mg/kg的標(biāo)準(zhǔn)要求,輕病區(qū)奶渣的鉻含量為2.158mg/kg,超過標(biāo)準(zhǔn)要求。 2.奶渣和牛奶中必需氨基酸與氨基酸總量的百分比在47%以上,必需氨基酸指數(shù)在90以上,營養(yǎng)價值較高,糌粑中必需氨基酸與氨基酸總量的百分比在33%左右,病區(qū)的必需氨基酸指數(shù)在70以下,青稞的必需氨基酸與氨基酸總量的百分比及必需氨基酸指數(shù)都較糌粑高。青稞、糌粑、奶渣、牛奶的必需氨基酸指數(shù)都表現(xiàn)為隨著患病率的降低,必需氨基酸指數(shù)呈上升趨勢。 3.青稞和糌粑中有多種氨基酸含量差異顯著,青稞蛋白質(zhì)的氨基酸評分,青稞的第一限制氨基酸為賴氨酸,重病區(qū)和中病區(qū)第二限制氨基酸為含硫氨基酸,輕病區(qū)和非病區(qū)第二限制氨基酸為蘇氨酸,青稞蛋白質(zhì)的化學(xué)評分顯示,第一限制氨基酸為含硫氨基酸,第二限制氨基酸為賴氨酸；糌粑蛋白質(zhì)的氨基酸評分顯示,糌粑的第一限制氨基酸為賴氨酸,重病區(qū)、中病區(qū)、輕病區(qū)的第二限制氨基酸為含硫氨基酸,非病區(qū)第二限制氨基酸為蘇氨酸,糌粑蛋白質(zhì)的化學(xué)評分顯示,第一限制氨基酸為含硫氨基酸,第二限制氨基酸為賴氨酸；重病區(qū)、中病區(qū)、輕病區(qū)奶渣和牛奶蛋白質(zhì)的第一限制氨基酸為含硫氨基酸。青稞、糌粑、牛奶、奶渣中含硫氨基酸的含量都比較低。
[Abstract]:The contents of 15 elements and 17 kinds of amino acids in barley, Zanba, milk residue and milk were analyzed in Aba disease area, and the contents of 15 elements and 17 kinds of amino acids were analyzed, and the contents of serious disease area, middle disease area and light disease area were analyzed. The contents of elements and amino acids in non-endemic areas were compared and analyzed. The nutritional value of protein in highland barley, tsamba, milk and milk residue was evaluated to understand the nutritional value of diet of residents. To provide some suggestions for the improvement of dietary nutrition of residents in the disease area and to provide a scientific basis for the study and prevention of Kaschin-Beck disease. The main results are as follows: 1. There were significant differences in various elements in different areas of highland barley. The contents of Cu and Fe were higher in the diet of the diseased areas, in which the content of chromium in highland barley was higher, that in the seriously diseased areas, in the areas of moderate and light diseases, was higher. The chromium content in non-diseased areas was 4.004 mg / kg, 2.465 mg / kg and 2.254 mg / kg, 2.382 mg / kg, respectively. The chromium S1.Omg / kg in cereals exceeding the limit of contaminant in food was 100% above the standard. The content of chromium in highland barley in seriously ill area was 4 times of the standard. The highland barley was made into Zanba and seriously ill area. The chromium content in middle, light and non-diseased areas was 0.152 mg / kg ~ 0.201 mg / kg ~ 0.190 mg / kg ~ 0.162 mg 路kg ~ (-1) 路kg ~ (-1) respectively. The content of chromium was obviously decreased, but the content of chromium was increased significantly by making milk residue. The content of chromium was 1.646 mg / kg in the seriously ill area and the middle area respectively. 1.890 mg / kg is close to the standard requirement of chromium 鈮，

本文編號：1470717