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中国农学通报 ›› 2019, Vol. 35 ›› Issue (20): 121-125.doi: 10.11924/j.issn.1000-6850.casb18050018

所属专题: 生物技术 园艺

• 食品 营养 检测 安全 • 上一篇    下一篇

外源硒对叶用莴苣营养品质和风味物质种类及含量的影响

陈胜伦, 周豪, 刘豫, 金卓君, 杨聪, 赵婉伊, 李彦华, 徐卫红.   

  1. 西南大学资源环境学院
  • 收稿日期:2018-05-06 修回日期:2018-07-07 接受日期:2018-07-17 出版日期:2019-07-15 发布日期:2019-07-15
  • 通讯作者: 徐卫红.
  • 基金资助:
    现代农业大宗蔬菜产业技术体系专项(CABS-23);国家科技支撑计划项目(2007BAD87B10)

Effects of Exogenous Selenium on Nutritional Quality, and Components and Contents of Flavor Substances in Lettuce

  • Received:2018-05-06 Revised:2018-07-07 Accepted:2018-07-17 Online:2019-07-15 Published:2019-07-15

摘要: 采用盆栽试验研究了叶面喷硒(0、0.1、0.2、0.4和0.8 mg.L-1)对叶用莴苣营养品质和风味品质的影响。结果显示,叶面施硒增加了叶用莴苣甜味氨基酸、鲜味氨基酸和苦味氨基酸含量,当浓度为0.2 mg.L-1时达到峰值。叶面喷施硒不同程度提高了有机酸总量及柠檬酸含量、苹果酸含量和酒石酸含量,当硒浓度为0.2 mg.L-1时,总酸含量、柠檬酸含量、苹果酸含量和酒石酸含量达到最大值。喷施0.8 mg.L-1外源硒使得叶用莴苣风味物质总量增加了44.15%,其中2-辛醇、4-羟基-4-甲基环己酮、7-十七烷酮、乙酸己酯分别较对照增加了32.31%、28.87%、33.46%和80.52%。叶面喷硒可以提高叶用莴苣的营养品质、增加风味物质含量,以硒浓度为0.2 mg.L-1时品质最佳。

关键词: 文冠果幼苗, 文冠果幼苗, 土壤盐胁迫, 生长策略, 耐盐性阈值

Abstract: A pot experimental study on the effect of Spraying Selenium (0, 0.1, 0.2, 0.4, 0.8 mg.L-1) on the nutritional quality and flavor of lettuce leaf. The results showed that foliar application of selenium increased the content of sweet amino acids, umami amino acids and bitter amino acids of leaf lettuce, and it reached peak when Se was 0.2 mg.L-1. The content of organic acid, citric acid, malic acid and tartaric acid were increased in different degree by Spraying Selenium on the leaves. At 0.2 mg.L-1 Se, the total acid content, citric acid content, malic acid content and tartaric acid content reached the maximum value. At 0.8 mg.L-1 Se, the total flavor substances in leaf lettuce increased by 44.15%. The content of 2-octanol, 4-hydroxy-4-methyl cyclohexanone, 7-pyrrolidone and hexyl acetate increased by 32.31%, 28.87%, 33.46% and 80.52% compared with the control, respectively. Foliar application of selenium improved the nutritional quality of lettuce and increased the content of flavor substances, and the best treatment was 0.2 mg.L-1 Se.