摘要
粮食加工副产物的深加工与综合利用是中国粮食工业发展的重要方向,为了准确获得中国小麦资源总量、分布以及品质状况,在调查中国小麦胚芽资源分布基础上,从中国小麦主产区的大型面粉企业采集小麦胚芽样品,分析商用小麦胚芽的主要营养组成以及微生物污染状况。结果表明,中国每年实际可利用小麦胚芽约20万t,资源主要集中在山东、河南、河北等省;商用小麦胚芽的平均酸价(以KOH计)22.8mg/g,夏季最高达60.4mg/g;其平均含水率为12.1%、蛋白质质量分数为33.70%(其中赖氨酸质量分数为2.10%)、油脂质量分数为11.12%(其中亚油酸质量分数为58.34%),α-生育酚质量分数为0.23%;其菌落总数平均为2.65×104cfu/g。小麦胚芽资源调查与品质评估结果,对中国粮食工业发展规划和粮食副产物深加工企业决策将具有重要的参考价值。
In order to get a clear picture of resource distribution and processing quality of the commercial wheat germ in China,wheat germ samples were collected from domestic large-scale wheat flour enterprises based on an elaborate survey of China＇s wheat germ resource distribution.Nutritional composition and quality difference were analyzed,microbial contamination of wheat germ was determined as well.The results show that the amount of annual usable wheat germ is about 0.2 million tons actually,which are mainly concentrated in Shandong,Henan and Hebei province.The average acid value of commercial wheat germ is 22.80 mg/g,while the highest is up to 60.4 mg/g in summer.The average water content of wheat germ is 12.10%,protein content is 33.07%（in which the average lysine content is 2.10%）,crude fat is 11.12%（in which the content of linoleic acid is 58.34%）,α-tocopherol content is 0.23%,total colonies is 2.65×104 cfu/g.The scientific investigation and assessment of wheat germ resources can provide a reference for the development of national food industry and grain process enterprises.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2012年第2期244-249,F0004,共7页
Transactions of the Chinese Society of Agricultural Engineering
基金
江苏省研究生培养创新工程项目(CX09B-213Z)
江苏高校优势学科建设工程资助项目
关键词
品质控制
营养
农产品
小麦胚芽
资源分布
调查
差异性
quality control
nutrition
agricultural products
wheat germ
resource distribution
investigation
difference
