食品科学 ›› 2010, Vol. 31 ›› Issue (3): 22-25.doi: 10.7506/spkx1002-6300-201003005

• 基础研究 • 上一篇    下一篇

人工培养地木耳的群体显微结构及营养成分分析

阎春兰1,2,邓中洋1,胡征宇1,*   

  1. 1.中国科学院水生生物研究所 2.中南民族大学生命科学学院
  • 收稿日期:2009-04-07 出版日期:2010-02-01 发布日期:2010-12-29
  • 通讯作者: 胡征宇 E-mail:yancl77@yahoo.com.cn
  • 基金资助:

    国家自然科学基金项目(30671611)

Colony Structure and Nutritional Composition Analysis of Cultivated Nostoc commune Vauch.

YAN Chun-lan1,2,DENG Zhong-yang1,HU Zheng-yu1,*   

  1. 1. Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;2. College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
  • Received:2009-04-07 Online:2010-02-01 Published:2010-12-29
  • Contact: HU Zheng-yu E-mail:yancl77@yahoo.com.cn

摘要:

以人工培养的地木耳 (Nostoc commune Vauch.) 为材料,测定其生化组成,并对培养的地木耳显微结构进行观察。结果表明:地木耳表层藻丝较中央藻丝排列更加紧密,中央藻丝有或无单独胶鞘包裹;人工培养的地木耳含16 种氨基酸,蛋白质含量为17.46%;脂肪含量为0.53%,低于野生地木耳中脂肪的含量;维生素含量较低;矿质元素含量远高于野生地木耳的含量;而砷、铅、汞、镉4 种重金属元素含量较低,符合国家食品卫生标准。

关键词: 人工培养, 地木耳, 营养, 分析, 结构

Abstract:

Cultivated Nostoc commune Vauch. was used as the raw material to determine its biochemical composition and structure. Results indicated that surface trichomes of cultivated N. commune exhibited more tight arrangement than that of the interiors. Meanwhile, some trichomes in the interior were enveloped by sheath. Cultivated N. commune contained 17.46% protein that was composed of 16 kinds of amino acids and 0.53% fatty acid. Compared to wild N. commune, lower fatty acid and vitamin contents were determined in cultivated N. commune, which, however, was rich in mineral elements and exhibited contents of heavy metals such as As, Pb, Hg and Cd that were much lower than the maximum threshold stipulated in the Chinese national food hygiene standards.

Key words: cultivation, Nostoc commune Vauch., nutrition, analysis, structure

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