食品科学 ›› 2013, Vol. 34 ›› Issue (5): 255-259.doi: 10.7506/spkx1002-6630-201305053

• 营养卫生 • 上一篇    下一篇

薏苡不同部位营养成分分析及评价

王 颖1,赵兴娥1,王 微1,阚建全1,* ,余义筠2   

  1. 1. 西南大学食品科学学院
    2. 西南大学 食品科学学院
    3. 重庆君亲食品有限公司
  • 收稿日期:2011-12-26 修回日期:2013-01-20 出版日期:2013-03-15 发布日期:2013-04-16
  • 通讯作者: 阚建全 E-mail:ganjq1965@163.com

Analysis and Evaluation of Nutritional Components in Different Tissues of Coix lacryma-jobi

WANG Ying1,ZHAO Xing-e1,WANG Wei1,KAN Jian-quan1,*,YU Yi-jun2   

  1. 1. Key Laboratory of Products Processing and Storage of Chongqing, Laboratory of Quality and Safety Risk Assessment for Agro-products on Storage and Preservation (Chongqing), Ministry of Agriculture, College of Food Science, Southwest University, Chongqing 400715, China;2. Junqin Food Company of Chongqing, Chongqing 400700, China
  • Received:2011-12-26 Revised:2013-01-20 Online:2013-03-15 Published:2013-04-16
  • Contact: KAN Jian-quan E-mail:ganjq1965@163.com

摘要:

以贵州兴仁县产薏苡的不同部位为研究对象,分析测定其种仁及非种仁部位的营养成分和功能性成分。结果表明:薏苡6个部位的化学成分含量有一定差异,种仁的蛋白质和多糖类物质含量较高,分别为19.33g/100g和2.26g/100g,VE含量为8.66mg/100g;外壳和种皮的粗纤维含量高;根中VB1和VB2含量较高,分别为0.61mg/kg和2.96mg/kg;矿质元素中K、Na、Ca、Mg等常量元素含量较高;种仁和叶中分析出7种必需氨基酸和10种非必需氨基酸,其余部位均为7种必需氨基酸和9种非必需氨基酸;功能性成分分析中,根的薏苡素和总多酚含量最高,分别为1.26mg/g和4.53mg/g,种仁中总黄酮含量最高,为2.26mg/g。脂肪酸分析中,种皮、茎、叶的不饱和脂肪酸相对含量达到70%以上。因此,薏苡不同部位的营养价值和药用价值高,具有很好的开发前景。

关键词: 薏苡, 营养成分, 氨基酸评价, 功能性成分

Abstract:

Nutritional and functional components were analyzed in different tissues of Coix lacryma-jobi grown in Guizhou. Results showed that nutritional factors from different tissues exhibited a difference. Higher contents of proteins and polysaccharides were determined in coix seed kernel, which were up to 19.33 g/100 g and 2.26 g/100 g, respectively. The content of vitamin E in coix seed kernel was 8.66 mg/100 g. Higher contents of total fiber were determined in coix coat and coix shell. Coix root had the highest content of VB1 and VB2, which were up to 0.61 mg/kg and 2.96 mg/kg, respectively. Higher contents of potassium, sodium, calcium and magnesium among minerals were also determined. Meanwhile, 7 essential amino acids and 10 non-essential amino acids were  detected in coix seed kernel and coix leaf; in addition, 7 essential amino acids and 9 non-essential amino acids were detected in other locations. The contents of eoixol and polyphenols revealed the highest levels in root, which were 1.26 mg/g and 4.53 mg/g, respectively. The highest content of flavonoids was determined in coix seed kernel at the level of 2.26 mg/g. The contents of unsaturated fatty acids in coix coat, stem and leaves were more than 70%. Therefore, Coix lacryma-jobi has high nutritional value and healthcare function so that it has promising prospects for further development and utilization.

Key words: Coix lacryma-jobi, nutrition constituent, amino evaluation, functional constituent

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