食品科学

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洞庭湖区南荻嫩茎营养成分分析与重金属含量测定

肖骏玖1,赵玲艳1,石星波1,聂 灿1,2,邓放明1,*   

  1. 1.湖南农业大学食品科学技术学院,湖南 长沙 410128;2.湖南省沅江市科技局,湖南 沅江 413100
  • 出版日期:2015-06-25 发布日期:2015-06-12
  • 通讯作者: 邓放明
  • 基金资助:

    公益性行业(农业)科研专项(201403079);湖南省现代农业产业技术体系建设专项

Analysis of Nutrients and Heavy Metals in Tender Stem of Triarrhena lutarioriparia from the Dongting Lake Area

XIAO Junjiu1, ZHAO Lingyan1, SHI Xingbo1, NIE Can1,2, DENG Fangming1,*   

  1. 1. College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China;
    2. Hunan Yuanjiang Science and Technology Bureau, Yuanjiang 413100, China
  • Online:2015-06-25 Published:2015-06-12
  • Contact: DENG Fangming

摘要:

为研究洞庭湖区河滩野生南荻嫩茎的营养价值和开发前景,以鲜样去壳冻藏和热烫后去壳冻藏的嫩茎为原料,分析测定其主要化学成分。结果表明:新鲜南荻嫩茎和热烫南荻嫩茎的水分含量分别为91.86%和89.82%、总糖含量分别为3.08%和3.72%、还原糖含量分别为1.10%和1.86%、蛋白质含量分别为2.90%和3.55%、总膳食纤维含量分别为31.81%和43.67%、总灰分含量分别为0.36%和0.33%,南荻嫩茎中富含15 种氨基酸,含有钾、钠、钙、镁、锰、锌、铜、硒等元素,重金属铅、镉、铬未检出,汞和砷含量低于国标限量值。

关键词: 洞庭湖, 南荻嫩茎, 营养成分, 重金属

Abstract:

This study was conceived to analyze the nutritional value and prospect of the tender stems of Triarrhena
lutarioriparia growing on the beach of Dongting Lake. The fresh samples were peeled and separated into two portions:
one was blanched before refrigerated storage, and the other was directly refrigerated. The two portions were tested for
major chemical components. The results showed the fresh and blanched tender stems to contain 91.86% and 89.82%
moisture, 3.08% and 3.72% total sugar, 1.10% and 1.86% reducing sugar, 2.90% and 3.55% protein, 31.81% and
43.67% total dietary fiber (dry basis), and 0.36% and 0.33% total ash (dry basis), respectively. The tender stems of
Triarrhena lutarioriparia was found to contain 15 amino acids and a number of elements including Ka, Na, Ca, Mg, Mn,
Zn, Cu, and Se but no Pb, Cd or Cr, as well as lower amounts of Hg and As than the national standard limits of China.

Key words: Dongting Lake, Triarrhena lutarioriparia tender stem, nutrients, heavy metal

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