食品科学 ›› 2013, Vol. 34 ›› Issue (21): 283-291.doi: 10.7506/spkx1002-6630-201321057

• 生物工程 • 上一篇    下一篇

沼泽红假单胞菌胞内番茄红素生物合成的研究

张 同,朱瑞艳,惠伯棣,杨博媛   

  1. 1.北京联合大学应用文理学院,北京 100191;2.河北省生物新能源工程技术研究中心,河北 秦皇岛 066004
  • 收稿日期:2012-10-09 修回日期:2013-10-11 出版日期:2013-11-15 发布日期:2013-10-28
  • 通讯作者: 惠伯棣 E-mail:bodi_hui@buu.edu.cn

Lycopene Biosynthesis in Rhodopseudomonas palustris

ZHANG Tong,ZHU Rui-yan,HUI Bo-di,YANG Bo-yuan   

  1. 1. College of Applied Arts and Science, Beijing Union University, Beijing 100191, China;
    2. Hebei New Bio-energy Engineering Research Center, Qinhuangdao 066004, China
  • Received:2012-10-09 Revised:2013-10-11 Online:2013-11-15 Published:2013-10-28
  • Contact: Bodi HUI E-mail:bodi_hui@buu.edu.cn

摘要:

研究沼泽红假单胞菌中番茄红素的合成积累,为开发番茄红素的新资源作出尝试。通过HPLC和HPLC-MS分析沼泽红假单胞菌四氢呋喃萃取液,确认萃取液中所含的主要类胡萝卜素为玫红品、3,4-脱氢玫红品和番茄红素。在补充碳源的条件下,以种子培养基培养沼泽红假单胞菌,确定番茄红素在菌群进入对数生长期一段时间后才大量积累,并在菌群因缺少氮源而进入稳定期后开始下降。这说明番茄红素的合成不仅需要碳源作为前体物,还需要足够的氮源生成类胡萝卜素合成酶才可以大量积累。通过实验分别确定了沼泽红假单胞菌生产番茄红素的最佳碳源、氮源及pH值,在最佳条件下番茄红素的总产量最大值为0.2456μg/mL,相对产量为0.1682μg/g。

关键词: 番茄红素, 沼泽红假单胞菌, 生物合成, 培养优化

Abstract:

This research aims to study the biosynthesis of lycopene in Rhodopseudomonas palustris and explore the possibility
for Rhodopseudomonas palustris to be a novel source of natural lycopene. The metabolic products of R. palustris extracted with
tetrahydrofuran (THF) were analyzed by HPLC and HPLC-MS. The results showed that the main carotenoids in R. palustris were
rhodopin, 3,4-dehydrorhodopin and lycopene. R. palustris was cultivated in SMN supplemented with carbon source. Massive
lycopene accumulation was observed during a period after the beginning of the logarithmic phase, followed by a decline at the
stable phase. The optimal carbon source, nitrogen source and pH were determined. Under the optimal cultivation conditions, the
yield of lycopene reached a maximum level of 0.2456 μg/mL, and the relative yield was 0.1682 μg/g.

Key words: lycopene, Rhodopseudomonas palustris, biosynthesis, culture optimization