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食品研究与开发:2022,43(17):41-48
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基于主成分和聚类分析评价12种植物酵素品质
(1.武夷学院茶与食品学院,福建 武夷山 354300;2.福建农林大学食品科学学院,福建 福州 350002)
Quality Evaluation of 12 Plant Jiaosu:Based on Principal Component Analysis and Cluster Analysis
(1.College of Tea and Food Science,Wuyi University,Wuyishan 354300,Fujian,China;2.College of Food Science,Fujian Agriculture and Forestry University,Fuzhou 350002,Fujian,China)
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投稿时间:2021-07-21    
中文摘要: 为科学评价植物酵素的综合品质,对12种液态发酵的植物酵素的总酸、粗多糖、总蛋白、总黄酮、总多酚、超氧化物歧化酶(superoxide dismutase,SOD)活力、总抗氧化能力、1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picrylhydrazyl,DPPH)自由基清除率8个品质指标进行测定,并对其进行主成分分析和聚类分析。结果表明,通过主成分分析将8个品质指标简化为3个主成分,其累积方差贡献率为88.284%,综合评价模型显示,以玫瑰花为原料制备的酵素品质较优。采用聚类分析将酵素8个品质指标分为3类,结合相关性和主成分分析结果,确定总酸、粗多糖、SOD酶活力、总抗氧化能力、DPPH自由基清除率为酵素品质的核心指标。
Abstract:This study aimed to comprehensively evaluate the quality of plant Jiaosu.To be specific,the 8 quality indexes of total acids,crude polysaccharides,total proteins,total flavonoids,total polyphenols,superoxide dismutase(SOD)activity,total antioxidant capacity and 1,1-diphenyl-2-picrylhydrazyl(DPPH)radical scavenging rate of 12 kinds of plant Jiaosu yielded by liquid-state fermentation were determined,followed by principal component analysis(PCA)and cluster analysis.The results showed that PCA integrated the 8 quality indexes into 3 principal components,and the cumulative variance explained was 88.284%.According to the comprehensive evaluation model,the quality of Jiaosu prepared with rose was higher.Cluster analysis classified the 8 quality indexes into 3 groups.In summary,total acids,crude polysaccharides,SOD activity,total antioxidant capacity and DPPH scavenging capacity were the core quality indexes of Jiaosu.
文章编号:202217006     中图分类号:    文献标志码:
基金项目:福建省自然科学基金(2022J011197);武夷学院引进人才科研启动项目(YJ201903);武夷学院科技创新发展基金(2019J05118-02)
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