Abstract Purple Polignano carrot is a traditional Italian landrace cultivated in Apulia region rich in antioxidants and with a high nutritional value. On the other hand, these carrots showed a high perishability. The postharvest behaviour of fresh-cut purple Polignano carrots stored in open bags (AIR) or passive modified atmosphere (pMA) was studied, analysing the main qualitative parameters and the polyphenols and carotenoids profile. The storage in pMA allowed to preserve visual quality and respiration rate better than the storage in AIR. Polyphenols (hydroxycinnamic acids, their derivatives and anthocyanins) increased during storage of about 249 % in samples stored in pMA and of about 306 % in those stored in AIR at 4 °C during the first 4 days of storage, respect to fresh carrots. Instead, carotenoids mean content in carrots just after harvest (6.28 ± 0.48 mg kg-1 fw) did not change significantly during storage at 4 °C (both in AIR or pMA). According to our results, pMA resulted a valid solution to cold store fresh-cut purple Polignano carrots until two weeks, preserving quality and nutritional value.

中文翻译：

---

评价在改良气氛中储存的鲜切紫色 POLIGNANO 胡萝卜的质量、酚类和类胡萝卜素成分

摘要 紫色波利尼亚诺胡萝卜是意大利普利亚地区栽培的传统地方品种，富含抗氧化剂，营养价值高。另一方面，这些胡萝卜表现出高的易腐性。研究了储存在开袋 (AIR) 或被动气调 (pMA) 中的鲜切紫色 Polignano 胡萝卜的采后行为，分析了主要的定性参数以及多酚和类胡萝卜素的特征。在 pMA 中的存储允许比在 AIR 中的存储更好地保持视觉质量和呼吸速率。多酚（羟基肉桂酸、它们的衍生物和花青素）在储存期间增加了约 249%，在储存在 pMA 中的样品中，在储存的前 4 天期间，在 4°C 下储存在 AIR 中的样品中增加了约 306%，相对于新鲜胡萝卜。反而，收获后胡萝卜中的类胡萝卜素平均含量 (6.28 ± 0.48 mg kg-1 fw) 在 4 °C 储存期间没有显着变化（无论是在空气中还是在 pMA 中）。根据我们的结果，pMA 是一种有效的解决方案，可将鲜切紫色 Polignano 胡萝卜冷藏至两周，同时保持质量和营养价值。