Studies On The Difference Of Nutritional Function Of Xinjiang Hui-Jujube And Its FTIR Origin Discriminant Technology

The Xinjiang jujube as“Red High-Quality and Profitable Fruit”of all nationalities has greatly promoted the development of the jujube economy of Xinjiang.However,due to various reasons,For the development of jujube in various regions of Xinjiang,there are some problems such as lack of systematic study of quality characteristics and quality standards of the jujube industry,and the circulation and sale are not quite standard,which severely constrained the sustainable and healthy development of the Xinjiang jujube industry.Against this deficiency,This study takes the Hui-jujube from various producing areas in Xinjiang as the material.The 40 nutritional function indexes of Hui-jujube were analyzed comprehensively and systematically from Henan Xinzheng and Xinjiang.On this basis,The differences of the content of Hui-jujube in different producing areas was compared,through multivariate analysis,the comprehensive quality and diversity of Hui-jujube in different producing areas were explored.At the same time,according to the characteristics that most of the different components are organic components,the characteristics of the organic components of the test objects can be characterized by FTIR spectroscopy.Infrared spectral characteristics and characteristic bands of Hui-jujube in 11 producing areas of Xinjiang were studied.The main results are as follows:(1)By comparing the differences in physicochemical composition content of Hui-jujube between Xinjiang and Xinzheng provinces,it was found that the content of Xinjiang Hui-jujube has higher ash,protein,soluble solids,insoluble fiber,total sugar,glucose,sucrose,total amino acids,polysaccharides,triterpenoid and cyclic adenosine monophosphate than Xinzheng ash.The contents of reducing sugar,fructose and flavonoids in Xinjiang were higher than those in Xinzheng Hui-jujube.(2)The nutrient function of comprehensive production areas explored the comprehensive quality of Hui-jujube in different producing areas.The results showed that except for the difference in potassium,manganese,zinc,and flavonoid contents between the 21 nutritional function indicators(P>0.05),there were significant differences in the remaining 17 nutritional function indicators(P<0.05);Component analysis,comprehensive extraction of 4 main points represents 83.70%of the original date information amount of the Hui-jujube,and locked the advantage of the characteristics of the origin of the nutritional function indicators are:total sugar,sucrose,reducing sugar,copper,magnesium,phosphorus,cyclic phosphate gland Glycosides,insoluble dietary fiber,protein,flavonoids and triterpenoids;comprehensive evaluation,obtained comprehensive quality scores of 1.88,0.61,0.10 and-0.01 for Ruoqiang Hui-jujube,Aksu Hui-jujube,Zep Hui-jujube and Tokson Hui-jujube,respectively.Among them,Ruoqiang Hui-jujube and Aksu Hui-jujube have better comprehensive quality.(3)By comparing the differences in amino acids of Hui-jujube between Xinjiang 4 provinces:showed that threonine,glycine,alanine,cysteine,lysine,proline and methionine were not significantly different among different producing areas(P>0.05),aspartic acid,serine,glutamic acid,valine,isoleucine,leucine,tyrosine,phenylalanine,lysine,histidine and arginine.There was a significant difference in production areas(P<0.05).The highest total amount of amino acids is Ruoqiang Hui-jujube,the proportion of essential amino acids in protein and its proportion is close to the total amount of essential amino acids in fish compared,The ratio of essential amino acid content to total protein was the highest,Compared with the FAO/WHO recommended model,the amount of amino acids in Ruoqiang Hui-jujube exceeded the recommended amount.Tokson Hui-jujube has the characteristics that the proportion of medicinal amino acids to total amino acids is high;Aksu Hui-jujube has the characteristics of good acidity,sweet taste amino acid and bitter taste amino acid ratio;comprehensive analysis,get Ruoqiang Hui-jujube,Aksu Hui-jujube,Zep Hui-jujube,Tokson Hui-jujube,The comprehensive amino acid scores of the Hui-jujube were 1.41,0.07,-0.37,and-1.18,respectively.(4)The results showed that the similarity of FTIR spectrum peaks was high in Hui-jujube from different producing areas,and a total of 11 common peaks are marked,which are broad hydroxyl peak,methyl stretching vibration absorption peak,ester carbonyl stretching vibration peak and carbon-oxygen bond stretching vibration peak,etc.The corresponding markers were proteins,amino acids,flavonoids,sugars,etc;1200?400 cm^-1 wavebands can be used to classify the Hui-jujube in 11 producing areas;the cluster sum of squared deviations and the average linkage between clusters It is more suitable for application in the field of discriminating Fourier transform infrared spectroscopy origin of Hui-jujube in different producing areas of Xinjiang.