来宾产玉米多指标的熵值法研究  

Research on Entropy Method for Multiple Indexes of Maize in Laibin

作　　者：周利兵 张远佳 蒋才云 ZHOU Li-bing;ZHANG Yuan-jia;JIANG Cai-yun(School of Food and Biochemical Engineering,Guangxi Science&Technology Normal University,Laibin 546119,China)

机构地区：[1]广西科技师范学院食品与生化工程学院,广西来宾546199

出　　处：《江西农业学报》2022年第3期16-21,共6页Acta Agriculturae Jiangxi

基　　金：广西科技师范学院重点科研项目(GXKS2021ZD004);广西科技师范学院高等教育本科教学改革工程项目(2021GKSYGA04);广西科技师范学院高层次人才项目(GXKS2020GKY006);2018~2020年广西本科高校食品科学与工程特色专业及实验实训教学基地(中心)建设项目(桂教高教[2018]52号)。

摘　　要：选择了来宾产玉米不同部位玉米粉、玉米碜、玉米头作为研究对象,从燃烧热、燃烧稳定性、脂肪、灰分、粗纤维含量等方面评价了玉米营养,测定了玉米不同部位的燃烧热、热重参数、脂肪、灰分及粗纤维含量(n=3,cv%<2.5%),并从玉米营养方面用熵值法进行了质量评价与分类。结果表明,玉米不同部位燃烧热的大小顺序为:玉米头>玉米碜>玉米粉,脂肪含量顺序为:玉米头>玉米碜>玉米粉,灰分含量顺序为:玉米粉>玉米头>玉米碜,粗纤维含量顺序为:玉米碜>玉米粉>玉米头,多指标熵值法分析排序为:玉米头>玉米碜>玉米粉。该研究为热重分析方法研究玉米燃烧稳定性评价提供了科学依据,研究建立的多指标综合评价体系为玉米营养评价提供了一种新思路。The maizemeal,maize flour and maize head from different parts of the maize produced in Laibin were selected as the research objects,and the multiple indexes of maize were measured and comprehensively evaluated.The maize nutrition was evaluated from the aspects of combustion heat,combustion stability,fat,ash and crude fiber content.The heat of combustion,thermogravimetric parameters,fat,ash and crude fiber content of different parts of maize were measured(n=3,cv%<2.5%),and the entropy method was used to evaluate and classify the quality of maize from the aspect of maize nutrition.The results showed that the order of combustion heat of different parts of the maize was maize head>maize flour>maize meal.The order of fat content was maize head>maize flour>maize meal.The order of ash content was maize meal>maize head>maize flour.The order of crude fiber content was maize flour>maize meal>maize head,and the order of multi-index entropy method analysis was maize head>maize flour>maize meal.This study provides a strong scientific basis for the evaluation and research of combustion stability by thermogravimetric analysis,and the multi-index comprehensive evaluation system established in this study provides a new idea for maize nutrition evaluation.

关 键 词：玉米营养 熵值法 热重分析 燃烧热 

分 类 号：S513[农业科学—作物学] O65[理学—分析化学]