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首页> 外文期刊>Acta Horticulturae >Chilling injury in citrus fruit: a holistic view.
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Chilling injury in citrus fruit: a holistic view.

机译：柑橘类水果的冷害：整体观点。

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High paying markets require cold-sterilisation of citrus fruit as a quarantine measure against fruit fly. However, cold storage might increase the production of free radicals, therefore resulting in oxidative damage leading to chilling injury, which manifests itself as dark lesions and pitting, thereby reducing fruit marketability. The development of chilling injury as physiological disorder depends on the cellular balance between reactive oxygen species (ROS) and antioxidants, the sugar-ascorbic relationship with a supportive role played by polyamines. Therefore, the aim of this study was to develop a holistic model incorporating the roles played by sugars, proline, antioxidants, polyamines, as well as postharvest treatments to alleviate chilling injury, hot water dips (HWD) and molybdenum (Mo) dips; such treatments were designed to increase the concentration of bio-molecules involved in chilling resistance of citrus fruit. Principal component analysis (PCA) of the data led to a reduction in variation, with major contributions from ascorbic acid, total phenolics, 2,2-diphenyl-1-picrylhydrazyl (DPPH) and naringin. Furthermore, PCA showed significant differences between groupings of chilling sensitive fruit (Sun Valley Estates) compared with non-chilling susceptible fruit (Ukulinga Research Farm). In addition, 1 micro M Mo, HWD at 53 degrees C and 10 micro M Mo plus HWD at 53 degrees C were effective in mitigating chilling injury and triggering an increase in the conversion of glucose to ascorbic acid, increasing flavedo proline, antioxidants and polyamines. In conclusion, preharvest orchard practices and environmental conditions are major factors determining the chilling susceptibility of lemons.
机译：高薪市场需要对柑橘类水果进行冷消毒，以作为对果蝇的隔离措施。但是，冷藏可能会增加自由基的产生，从而导致氧化损伤，导致冷害，表现为暗害和点蚀，从而降低了水果的适销性。作为生理障碍的冷害的发展取决于活性氧（ROS）和抗氧化剂之间的细胞平衡，糖与抗坏血酸的关系以及多胺的支持作用。因此，本研究的目的是建立一个综合模型，整合糖，脯氨酸，抗氧化剂，多胺以及收获后的处理以减轻冷害，热水浸（HWD）和钼浸（Mo）的作用。设计这种处理方法是为了增加涉及柑桔抗寒性的生物分子的浓度。数据的主成分分析（PCA）导致变化减少，主要来自抗坏血酸，总酚，2,2-二苯基-1-吡啶并肼基（DPPH）和柚皮苷。此外，五氯苯甲醚显示冷藏敏感水果（Sun Valley Estates）组与不冷藏敏感水果（Ukulinga Research Farm）之间存在显着差异。此外，在53摄氏度时1 micro M Mo，HWD和在53摄氏度时10 micro M Mo加HWD可有效缓解冷害并触发葡萄糖向抗坏血酸转化的增加，增加黄酮脯氨酸，抗氧化剂和多胺。总而言之，果园采收前的做法和环境条件是决定柠檬的低温敏感性的主要因素。

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