食品科学

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基于HepG2细胞模型的香菇柄粉多酚抗氧化及抗增殖活性

李 谣1,陈金龙1,夏春燕1,卢可可1,吴素蕊2,明 建1,3,*   

  1. 1.西南大学食品科学学院,重庆 400715;2.中华全国供销合作总社昆明食用菌研究所,云南 昆明 650223;
    3.西南大学 国家食品科学与工程实验教学中心,重庆 400715
  • 出版日期:2016-06-15 发布日期:2016-06-27

Antioxidant and Antiproliferative Activity of Polyphenols in Lentinus edodes Stipe Powder on HepG2 Cells

LI Yao1, CHEN Jinlong1, XIA Chunyan1, LU Keke1, WU Surui2, MING Jian1,3,*   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China;
    2. Kunming Edible Fungi Institute, All China Federation of Supply and Marketing Cooporatives, Kunming 650223, China;
    3. National Food Science and Engineering Experimental Teaching Center, Southwest University, Chongqing 400715, China
  • Online:2016-06-15 Published:2016-06-27

摘要:

以人肝癌细胞HepG2为细胞模型,经过不同粉碎条件处理香菇柄粉后,研究香菇柄粉游离酚的细胞抗氧化及多酚抗增殖活性。结果表明:香菇柄粉游离酚的细胞抗氧化活性(cellular antioxidant activity,CAA)值为9.90~24.22 μmol QE/100 g,普通粉碎组最高,纳米超微粉碎组最低,CAA值随粉体粒径减小而降低(不经磷酸盐缓冲液(phosphate buffer saline,PBS)清洗);气流超微粉碎组CAA值为0.65 μmol QE/100 g,普通粉碎组和纳米超微粉碎组未表现出细胞抗氧化活性(PBS清洗)。香菇柄粉游离酚的抗增殖活性(半数有效浓度(medianeffective concentration,EC50)值)为1.888~5.213 mg/mL,结合酚的抗增殖活性(EC50值)为2.225~4.751 mg/mL,气流超微粉碎处理对香菇柄粉结合酚的抗增殖活性有增强作用。

关键词: 香菇柄粉, 多酚, 细胞抗氧化活性, 抗增殖活性

Abstract:

The antioxidant activity of free phenols and anti-proliferation activity of polyphenols in Lentinus edodes stipe
powder after different crushing treatments on human liver cancer HepG2 cells were investigated in this study. The results
showed that the cellular antioxidant activity (CAA) decreased with the decrease in power size. Specifically, the CAA value
of free phenols from Lentinus edodes stipe powder ranged from 9.90 to 24.22 μmol QE/100 g; the coarse-ground group
indicated the highest CAA value, while and the nano-ground group exhibited the lowest CAA level. The CAA of free
phenols in Lentinus edodes stipe powder without washing with phosphate buffer saline (PBS) became lower with decreasing
particle size. With PBS washing, only the jet-milled group had antioxidant activity with a CAA value of 0.65 μmol QE/100 g.
The antiproliferative activity assay showed that EC50 values of free phenols from Lentinus edodes stipe powder were
1.888–5.213 mg/mL while those of bound phenols were 2.225–4.751 mg/mL. This study shows that jet milling can improve
the antiproliferative activity of Lentinus edodes stipe powder.

Key words: Lentinus edodes stipe powder, polyphenols, cellular antioxidant activity, antiproliferative activity

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