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可控气调作为冷链支持延长甘蓝采后寿命


来源: Ewan Gage et al  发布日期: 2024-10-30  访问量: 18


甘蓝的采后管理依赖于高强度冷却来控制采后生理,尽管会产生巨大的能源和环境成本,但可以最大限度地减少质量损失。作为替代方案,我们假设可控气调(CA)可以通过支持生理调节来提高贮藏温度,同时保持质量并减少能源需求。本研究考察了5或10°C下CA(1.5 kPa CO2和6 kPa O2)对甘蓝质量的影响
标签: 甘蓝、气调保鲜、叶绿素、贮藏温度、缺氧胁迫、ORE15、脱镁酶、枯草杆菌蛋白酶
 

Controlled atmosphere as cold chain support for extending postharvest life in cabbage

Ewan Gage, Ritika Jain, Leon A. Terry, Natalia Falagán
Plant Science Laboratory, Cranfield University, Bedfordshire, MK43 0AL, UK
Received 6 June 2024, Revised 27 August 2024, Accepted 2 September 2024, Available online 3 September 2024, Version of Record 6 September 2024.

https://doi.org/10.1016/j.plaphy.2024.109094

Highlights
• CA treatment can reduce cabbage respiration rate more than temperature alone.
• CA delays senescence and adventitious root development.
• Hypoxia impacts hormones, mainly abscisic acid accumulation maintaining quality.
• CA reduces expression of regulatory promotors of senescence such as the BoORE15.
• CA delays BoPPH expression at 10 °C implying regulatory chlorophyll reduction in air.

•CA处理比单独使用温度控制更能降低甘蓝的呼吸速率。
•CA延缓衰老和不定根发育。
•缺氧会影响激素,主要是维持质量的脱落酸积累。
•CA降低衰老调节启动子的表达,如BoORE15。
•CA在10°C下延迟BoPPH的表达,这意味着空气中叶绿素的调节性减少。

Abstract

Postharvest management of cabbage relies on high-intensity cooling to control postharvest physiology, minimising quality loss despite incurring significant energy and environmental costs. As an alternative, we hypothesised that controlled atmosphere (CA) could allow increased storage temperature by supporting physiological regulation, while maintaining quality and reducing energy demand. This study examined the effect CA (1.5 kPa CO2 and 6 kPa O2) at 5 or 10 °C on cabbage quality, with the aim of proposing a more sustainable and resilient supply chain. CA treatment was effective at reducing head respiration at higher temperature, with CA/10 °C treatment achieving lower respiration rates than Control/5 °C. Improved head colour retention and maintenance of stump quality were observed in cabbage under CA conditions. CA effects were seen also at a regulatory level; CA promoted an average of 25.4% reduction in abscisic acid accumulation potentially as part of a wider hypoxia stress response and was successful in decreasing expression of the senescence-coordinating transcription factor BoORE15. This finding was linked with a lower in downstream expression of pheophytinase and subtilisin protease. These results demonstrated that CA treatment fundamentally modified postharvest physiology in cabbage, which can be exploited to enable storage at warmer temperatures, contributing to supply chains with lower energy demand and its associated environmental benefits.

卷心菜(甘蓝)的采后管理依赖于高强度冷却来控制采后生理,尽管会产生巨大的能源和环境成本,但可以最大限度地减少质量损失。作为替代方案,我们假设可控气调(CA)可以通过支持生理调节来提高贮藏温度,同时保持质量并减少能源需求。本研究考察了5或10°C下CA(1.5 kPa CO2和6 kPa O2)对甘蓝质量的影响,旨在提出更可持续和更有弹性的供应链。CA治疗在较高温度下能有效减少头部呼吸,CA/10°C治疗的呼吸率低于对照/5°C。在CA条件下,甘蓝的头部颜色保持率和茎秆质量得到了改善。在监管层面也观察到CA效应;CA促进脱落酸积累平均减少25.4%,这可能是更广泛的缺氧应激反应的一部分,并成功降低了衰老协调转录因子BoORE15的表达。这一发现与脱镁叶绿素酶和枯草杆菌蛋白酶下游表达较低有关。这些结果表明,CA处理从根本上改变了甘蓝的采后生理,这可以用来在更高的温度下储存,有助于降低能源需求的供应链及其相关的环境效益。

Keywords: Brassica oleracea,Chlorophyll,Storage temperature,Hypoxic stress,ORE15,Pheophytinase,Subtilisin protease

关键词:甘蓝、叶绿素、贮藏温度、缺氧胁迫、ORE15、脱镁酶、枯草杆菌蛋白酶

 


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