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对大麦苗粉中的氨基酸进行了定性、定量分析研究。结果表明:大麦苗粉中共分析检测出26种氨基酸,其中,水解氨基酸17种,游离氨基酸26种。大麦苗粉中17种水解氨基酸总含量为9 163.422mg/100g,其中人体必需氨基酸含量占总含量的40%以上,大麦苗粉中含有9种药用氨基酸,其中Glu含量最高,达1 390.873mg/100g;大麦苗粉中26种游离氨基酸总含量为983.852 mg/100g;其中Asp、Glu、Arg、Pro、His、Val 6种游离氨基酸,是形成大麦苗粉风味的主要氨基酸。 相似文献
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Suhyoung Park Mariadhas Valan Arasu Min-Ki Lee Jin-Hyuk Chun Jeong Min Seo Naif Abdullah Al-Dhabi Sun-Ju Kim 《LWT》2014
We profiled and quantified glucosinolates (GSLs), anthocyanins and free amino acids in thirty-seven inbred lines green and red cabbage. Analysis of these distinct cabbages revealed the presence of 8 GSLs, 13 anthocyanins and 12 free amino acids. GSL contents were varied among the different lines of cabbage. The maximum levels of glucoraphanin (14.91 μmol/g DW) and glucobrassicin (12.37) were found in FX 1-28 and FX 1-32 lines, respectively. Total GSLs in red cabbage lines were 50% higher than those of green cabbage. Anthocyanin contents in red cabbage were ranged from 4.11 to 6.81 mg/g DW in FX 2-3 and FX 1-34 lines, respectively. Among the 13 anthocyanins, both cyanidin 3-(feruloyl) (sinapoyl)diglucoside-5-glucoside and cyanidin 3-(sinapoyl) (sinapoyl)diglucoside-5-glucoside levels were the highest amounts. The amounts of total free amino acids were ranged from 523.5 to 1308 mg/100 g fresh weight (FW) in green cabbage and 484.8 to 1271 in red cabbage, respectively. In red cabbage lines, 9.4% of the total free amino acids accounted essential amino acids such as valine, threonine, isoleucine, leucine and lysine. Thus, the amounts of GSLs, anthocyanins, and amino acids varied widely, and the variations in these compounds between the lines of cabbage were significant. 相似文献
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Patrick Etivant Pascal Schlich Jean-Claude Bouvier Patrick Symonds Alain Bertrand 《Journal of the science of food and agriculture》1988,45(1):25-41
Thirty-four French red wines from three regions already studied for their anthocyanin and flavonoid constituents have been further analysed for elements, amino acids and aromatic alcohols. An interpretation of the differences between wines related to their different geographic and varietal origins has been made from the results of statistical analyses: F statistic, principal component analysis (PCA) and stepwise discriminant analysis (SDA). Wine samples produced near Bordeaux were found to be characterised by higher rubidium and lower lithium and calcium concentrations. Differences between wine samples made from the same grape variety or produced in the same region are mainly related to differences in potassium and ash contents. The PCA demonstrates that the concentration of most amino acids in wines is mainly a function of the technology used in wine production. Moreover, it shows that the concentration of proline, hydroxyproline and ethanolamine are generally lower in wines prepared from Carignan, Cinsault and Grenache grapes than in wines from Cabernet Franc, Cabernet Sauvignon or Merlot grapes. Finally, it shows clear differences between wines according to the latitude of the production centre. These differences correspond to increasing total nitrogen content from south to north, ie Narbonne and Bordeaux versus Angers. In discriminant analysis Bordeaux wines were characterised by high rubidium and low arginine concentrations, Angers wines by a lower arginine content and Narbonne wines by their abundance of magnesium and deficiency of ethanolamine. 相似文献
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分析了萌动小麦游离氨基酸、蛋白质、水溶性糖类和破损淀粉含量及Mixolab面团糊化特性的变化。小麦萌动后游离氨基酸总量显著增加,蛋白质含量(干基)也增加,Mixolab仪测定的C2稠度谷值、C3淀粉糊化黏度峰值、C4淀粉糊化黏度谷值、C5淀粉回生终点值均减小。小麦萌动前后,水溶性总糖含量、Bacillus amyloliquefaciens蛋白酶(含内切和外切酶)降解产生的游离氨基酸含量对试验的6个品种差异不显著;除1个品种外,试验的其他5个品种水溶性还原糖含量及Aspergillus melleus蛋白酶(仅含内切酶)酶解产生的游离氨基酸含量显著增加。不同品种小麦萌动前后破损淀粉含量增减不一致。结论为小麦发芽后游离氨基酸总量增加、Mixolab面团蛋白质网络弱化程度加大、淀粉糊化峰值和谷值均降低,可以作为芽麦检测的参考依据。 相似文献