ZHAO Li.Effect of Tea Polyphenol Incorporated into Sodium Alginate-based Edible Coating on Preservation of Fresh-cut Bellis perennis[J].Northern Horticulture,2015,39(11):124-129.[doi:10.11937/bfyy.201511031]
茶多酚与海藻酸钠膜对鲜切雏菊保鲜的影响
- Title:
- Effect of Tea Polyphenol Incorporated into Sodium Alginate-based Edible Coating on Preservation of Fresh-cut Bellis perennis
- 文章编号:
- 1001-0009(2015)11-0124-06
- Keywords:
- Bellis perennis; tea polyphenol; sodium alginate; preservation
- 分类号:
- S 681.909+.3
- 文献标志码:
- A
- 摘要:
- 以鲜切雏菊为试材，采用涂膜处理的方法，研究茶多酚与海藻酸钠膜对鲜切雏菊鲜重变化、枯萎率、可溶性糖含量、可溶性蛋白质含量、多酚氧化酶(PPO)活性、过氧化物酶(POD)活性、丙二醛(MDA)含量、相对电导率的影响。结果表明：茶多酚与海藻酸钠膜对鲜切雏菊均有较〖JP2〗好的保鲜效果，特别是2.0%茶多酚与0.05 g/mL海藻酸钠结合处理鲜切雏菊效果最好。2.0%茶多酚+0.05 g/mL海藻酸钠组能维持鲜切雏菊鲜重，在瓶插24 d后，其鲜重变化率仅为-0.33%，能有效降低枯萎率，其中，当瓶插为24 d时，只有16.56%的鲜切雏菊发生枯萎，而CK组的鲜切雏菊接近全部枯萎，0.05 g/mL海藻酸钠组、1.0%茶多酚+0.05 g/mL海藻酸钠组超过半数的鲜切雏菊已经发生枯萎；能减缓鲜切雏菊可溶性糖含量和可溶性蛋白质含量降低的速度；能延缓鲜切雏菊PPO活性高峰和POD活性高峰的出现，其PPO活性高峰和POD活性高峰出现时间都分别较CK组、0.05 g/mL海藻酸钠组、1.0%茶多酚+0.05 g/mL海藻酸钠组延迟了8、4、4 d；MDA含量较其它3组上升得缓慢，而且在24 d内MDA含量较小，特别在瓶插后期MDA含量明显小于CK组；相对电导率始终维持在较低水平，而其它3组的鲜切雏菊相对电导率则有大幅度地提高。
- Abstract:
- ith the fresh-cut Bellis perennis as material，the fresh weight changes，withering rate，content of soluble sugar，content of soluble protein，polyphenol oxidase (PPO) activity，peroxidase (POD) activity，malonaldehyde (MDA) content and relative conductivity of fresh-cut Bellis perennis by tea polyphenol incorporated into sodium alginate-based edible coating using the method of coating processing were determined at this study.It showed that，tea polyphenol incorporated into sodium alginate-based edible coating had good effect on preservation of fresh-cut Bellis perennis，especially 0.05 g/mL sodium alginate coating contained 2.0% (w/v) of tea polyphenol.Due to the 0.05 g/mL sodium alginate coating contained 2.0% (w/v) of tea polyphenol，the fresh weight changes maintained well and the rate of fresh weight changes only reached -0.33% after 24 days；withering rate decreased perfectly，CK group of fresh-cut Bellis perennis faded nearly all and the group of 0.05 g/mL sodium alginate and 0.05 g/mL sodium alginate coating contained 1.0% (w/v) of tea polyphenol faded more than half，but only 16.56% fresh-cut Bellis perennis become faded；the content of soluble sugar and content of soluble protein increased slowly；the maximum value of POD activity and PPO activity appeared slower，and there was a delay for 8 days，4 days，4 days separately compared with CK group，0.05 g/mL sodium alginate group and 0.05 g/mL sodium alginate coating contained 1.0% (w/v) of tea polyphenol group；MDA content of fresh-cut Bellis perennis increased slowly within 24 days，and MDA content was obviously smaller than that of CK group in the late；the relative conductivity stay at a lower lever，but the relative conductivity of other three groups of fresh-cut Bellis perennis had greatly improved.
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备注/Memo
作者简介：赵莉(1978-），女，黑龙江伊春人，硕士，讲师，研究方向为景观设计与应用研究。E-mail：anyanerer@163.com.