摘要
对5个菊芋品种的总酚含量、PPO活性、POD活性与褐变强度进行了测定。结果表明:不同菊芋品种的总酚含量、PPO活性、POD活性与褐变强度差异显著,其中3个北方品种的各项指标均高于2个南方品种。相关性分析显示,4个外形呈不规则瘤形品种的PPO活性与褐变强度之间呈显著正相关,相关系数r=0.982。褐变主成分分析表明:PPO活性、POD活性和总酚含量这3个变量共同影响菊芋的褐变。
The phenol content and activities of polyphenol oxidase(PPO)and peroxidease(POD),and browning degree in 5 artichok(Helianthus tuberosus L.)cultivars were tested.The result indicated that phenol content,activities of PPO and POD,and browning degree existed significant variation among the 5 artichok cultivars,and indexes of the 3 northern cultivars were higher than that of the 2 southern cultivars.The correlation analysis showed that the relation between PPO and browning degree is positively significant among the 4 cultivars,all of which had tumour of irregular shape.The correlation coefficient r=0.982.The result of browning principal component analysis showed that phenol content,activities of PPO and POD were 3 variables jointly affecting artichok browning.
出处
《中国蔬菜》
北大核心
2011年第12期65-69,共5页
China Vegetables
基金
国家大学生创新性实验计划项目(091073120)
关键词
菊芋
褐变
总酚
PPO
POD
Artichok
Browning
Phenol
Polyphenol oxidase
Peroxidease
