摘要
为了解湖北省小麦营养品质状况,对2009年和2010年湖北省主要小麦生产县24份小麦样品的相关指标进行检测和分析。结果表明,(1)8种必需氨基酸赖氨酸、苏氨酸、缬氨酸、异亮氨酸、苯丙氨酸、蛋氨酸、色氨酸和亮氨酸的平均含量分别为3.55、3.70、5.55、4.06、6.03、2.17、1.43和8.79mg·g-1;赖氨酸的平均评分值为49,为第一限制性氨基酸,苏氨酸平均评分值为70,为第二限制性氨基酸;10种非必需氨基酸天门冬氨酸、丝氨酸、谷氨酸、脯氨酸、甘氨酸、丙氨酸、酪氨酸、组氨酸、精氨酸和半胱氨酸含量的平均值分别为6.37、6.09、37.93、12.64、5.14、4.44、3.70、3.56、5.85和3.50mg·g-1;小麦蛋白质含量的平均值为13.18%。(2)全氮、全磷和全钾含量的平均值分别为22.6、3.3和3.9g·kg-1,全磷含量比较充足,全钾含量相对不足。(3)微量元素铁、锰、铜、锌、硒含量的平均值分别为68.6、43.5、5.6、34.8和0.057mg·kg-1,铁、锰和锌含量较高,铜含量比较适宜,硒含量较低。(4)重金属元素镉、汞、铅、砷、铬和镍含量的平均值分别为0.053、0.003、0.061、0.020、0.198和0.191mg·kg-1,铅、砷、铬和汞的含量相对较低,处于清洁水平,部分样品中镉和镍的含量超过了限量标准。
In order to investigate the present status of nutritional quality of wheat in Hubei Province,24 samples from main production regions in 2009 and 2010 were collected and their quality indicators were detected and analyzed. The results showed as follows： （i） the average contents of 8 kinds of essential amino acids of lysine, threonine, isoleucine, valine, methionine, tryptophan, phenylalanine and leucine were 3.55 mg·g-1, 3.70 mg·g-1, 5.55 mg·g-1, 4.06 mg·g-1, 6.03 mg·g-1, 2.17 mg·g-1, 1.43 mg·g-1 and 8.79 mg·g-1, respectively. The overall average protein content of all the samples was 14.18%. The average contents of 10 kinds of non essential amino acids were 6.37 mg·g-1, 6.09 mg·g-1, 37.93 mg·g-1, 2.64 mg·g-1, 5.14 mg·g-1, 4.44 mg·g-1, 3.70 mg·g-1, 3.56 mg·g-1, 5.85 mg·g-1 and 3.50 mg·g-1, respectively. The average score of lysine was 49 as the first limiting amino acid, the average score of threonine was 70 as the second restrictive amino acid. （ii） The average contents of total nitrogen, total phosphorus and total potassium were 22.6 g·kg-1, 3.3 g·kg-1 and 3.9 g·kg-1, respectively. The total phosphorus content was more sufficient, the total potassium content was relatively insufficient. （iii） The average contents of trace elements of Fe, Mn, Cu, Zn and Se were 68.6 mg·kg-1, 43.5 mg·kg-1, 5.6 mg·kg-1, 34.8 mg·kg-1 and 0.057 mg·kg-1, respectively. The contents of Fe, Zn, and Mn were higher, the content of Cu was more appropriate, and the content of Se was lower. （iv） The average contents of heavy metals of Cd, Hg, Pb, As, Cr and Ni were 0.053 mg·kg-1, 0.003 mg·kg-1, 0.061 mg·kg-1, 0.020 mg·kg-1, 0.198 mg·kg-1 and 0.191 mg·kg-1, respectively. The content of Pb, As, Cr and Hg was relatively lower at the level of clean, while the content of Cd and Ni of some samples exceeds the limiting standard.
出处
《麦类作物学报》
CAS
CSCD
北大核心
2012年第5期967-972,共6页
Journal of Triticeae Crops
基金
国家小麦产业技术体系项目"武汉小麦综合试验站"[农业部农科教发(2007)12号]
关键词
湖北
小麦
营养品质
Hubei province wheat （Triticum aestivum L.） Nutritional quality
