期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 54, 期 19, 页码 7263-7269出版社
AMER CHEMICAL SOC
DOI: 10.1021/jf060568c
关键词
radish sprout; Raphanus sativus; methyl jasmonate; phenolics; 4-methylthio-3-butenyl-isothiocyanate; phenylalanine ammonia lyase; myrosinase; antioxidant activity
The effect of spraying exogenous plant hormone methyl jasmonate (MeJA) upon radish sprout (Raphanus sativus L.) was investigated in aspects of total phenolic content (TPC), isothiocyanate content, antioxidant activity of the radish extract, and enzymatic activities of phenylalanine ammonia lyase ( PAL) and myrosinase. The MeJA treatment significantly increased the TPC that resulted in the increased DPPH center dot (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging capacity. In addition, the PAL activity also increased by 60% at 24 h after MeJA treatment. However, the same treatment decreased the amount of 4-methylthio-3-butenylisothiocyanate (MTBITC), a major isothiocyanate in radish sprout and the activity of myrosinase, an enzyme related to produce isothiocyanates.
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