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Effects of poplar buds as an alternative to propolis on postharvest diseases control of strawberry fruits

注意:本論文已在《Journal of the Science of Food & Agriculture》, 202016;?96:?2136–2141表
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Shuzhen Yang,a Yefeng Zhou,a Junli Ye,b Gang Fan,a Litao Penga and Siyi Pana


Abstract
BACKGROUND: Botrytis cinerea and Rhizopus stolonifer, two main postharvest pathogens, cause great loss of strawberry fruits.Here, the effects of poplar buds extracts, a main plant source for Chinese propolis, on disease control were investigated in vitro and in vivo.
RESULTS: The HPLC profile of poplar buds ethanol extract (PBEE) was almost identical to that of propolis ethanol extract (PEE),with the active flavonoids identified as pinocembrin, chrysin and galangin. PBEE exhibited similar inhibitory activities on spore germination of both pathogens compared with PEE, and PBEE also strongly inhibited the mycelial growth of the pathogens. In vivo, PBEE could effectively reduce decay of strawberry fruits stored at 13 °C. Although the weight loss was slightly increased, the contents of total soluble solid, titritable acid, vitamin C and total anthocyanins were significantly higher in PBEE treated fruits than those of the control.
CONCLUSION: PBEE had the similar antifungal activity with propolis and had great potential as an alternative to propolis to control strawberry fruits diseases.
Keywords: strawberry; poplar buds; propolis; antifungal activity; postharvest diseases

摘要:楊樹芽作為蜂膠替代物對草莓果實采后病害控制的效應灰霉菌和根霉菌是草莓果實兩大主要采后病害真菌,給生產帶來很大損失。中國蜂膠的膠原植物楊樹芽提取物,對草莓果實病害的離體和活體控制效果進行了研究。結果表明,楊樹芽的乙醇提取物和HPLC圖譜幾乎與蜂膠乙醇提取物完全相同,均含有松鼠素、白楊素和高良姜素。楊樹芽提取物對兩病原菌孢子萌發表現的抑制活性與蜂膠提取物相似,且能強烈抑制兩種真菌菌絲生長。活體結果表明,楊樹芽提取物能有效減少草果果實在13度下的腐爛。盡管處理輕微增加了果實失重,但可溶性固形物、可滴定酸、Vc、總花色苷含量顯著高于對照果實。結論:楊樹芽提取物有與蜂膠相似的抗真菌活性,可以作為蜂膠替代物在控制草莓病害中應用。

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本站收錄的本文作者的其他論文:

1、 Use of active extracts of poplar buds against Penicillium italicum and possible modes of action
2、“法蘭地”草莓果實中花色素苷的組成及穩定性
3、松針提取物抑制柑橘青霉病菌作用及活性成分分析

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