食品科学

• 生物工程 • 上一篇    下一篇

抗性淀粉在双歧杆菌作用下的体外降解

范媛媛1,王树祥1,谭梅青1,杨公明2   

  1. 1.顺德出入境检验检疫局,广东 顺德 528303;2.华南农业大学食品学院,广东 广州 510642
  • 出版日期:2013-09-15 发布日期:2013-09-27
  • 通讯作者: 范媛媛
  • 基金资助:

    粤港澳关键领域重点突破项目(200849861007)

in vitro Degradation of Resistant Starch by Bifidobacteria

FAN Yuan-yuan1,WANG Shu-xiang1,TAN Mei-qing1,YANG Gong-ming2   

  1. 1. Entry-exit Inspection and Quarantine Bureau, Shunde 528303, China;
    2. College of Food Science, South China Agricultural University, Guangzhou 510642, China
  • Online:2013-09-15 Published:2013-09-27
  • Contact: 范媛媛

摘要:

探寻天然香蕉抗性淀粉在双歧杆菌作用下的体外降解规律。以天然香蕉抗性淀粉为原料,以抗性淀粉的残留率为指标,在单因素试验的基础上,采用响应曲面法研究菌液浓度、底物质量浓度及发酵时间对抗性淀粉残留率的影响,建立各种因素与抗性淀粉残留率关系的数学回归模型。确定香蕉抗性淀粉被完全降解的条件为:发酵时间14h、菌液浓度1011 CFU/mL、底物质量浓度4g/mL。

关键词: 抗性淀粉, 双歧杆菌, 降解

Abstract:

This study aimed to investigate the in vitro degradation of resistant starch Ⅱ (RS2) from banana by
bifidobacteria. The residual starch in the degraded product was measured. Response surface methodology (RSM) was
applied to study the effect of bacterial concentration, substrate concentration and fermentation time on the degradation
of RS. A mathematical regression model was established between residual rates of RS and the three factors. The optimal
degradation condition of banana RS was obtained as follows: fermentation time 14 h, bacterial concentration 1011 CFU/mL
and substrate concentration 4 g/mL.

Key words: resistant starch, bifidobacteria, degradation

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