Giuffrè Angelo Maria, Louadj Lamia, Rizzo Paola, De Salvo Emanuela, Sicari Vincenzo
Dipartimento AGRARIA-Università degli Studi "Mediterranea" di Reggio Calabria, Contrada Melissari, 89124 Reggio Calabria, Italy.
Dipartimento di Chimica e Biologia, Università degli Studi di Salerno, via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
Antioxidants (Basel). 2019 Jul 30;8(8):254. doi: 10.3390/antiox8080254.
In this paper, the effect of the packaging material and storage method on red raspberries produced at Reggio Calabria (Italy) was studied. For this purpose, the fruits were stored immediately after harvest in different conditions: in the fridge at 1 °C and in the freezer at -20 °C, using different packaging materials, two new patented films (nanoactive A) and (nanoactive B), one common packaging film (polyethylene terephthalate), and other fruits were left without any packaging material. Chemical parameters were analysed at harvest to have the initial characteristics without any conditioned storage and to distinguish the post-harvest effect on the fruits, then daily for storage in the fridge and monthly for storage in the freezer. The aims of our project were first to determine the qualitative characterization of these red raspberries, the optimization of their shelf-life during time in the fridge or freezer, using the different types of packaging materials and finally to highlight the usefulness of the new patented packaging materials. Nanoactive A film showed the best shelf-life in the fridge, and after 14 days the values, given as mg/100 g fresh weight, were: total phenolics (166.70), monomeric anthocyanin content (50.82), flavonoids (24.64), ascorbic acid (32.42), and 1, 1-diphenyl-2-picrylhydrazyl (DPPH) assay (95.93).
本文研究了包装材料和储存方法对意大利雷焦卡拉布里亚产红树莓的影响。为此，果实采收后立即在不同条件下储存：在1℃的冰箱中以及在-20℃的冷冻室中，使用不同的包装材料，两种新型专利薄膜（纳米活性A）和（纳米活性B），一种普通包装薄膜（聚对苯二甲酸乙二酯），还有一些果实不使用任何包装材料。在采收时分析化学参数以获取未经过任何条件储存的初始特征，并区分采后对果实的影响，然后在冰箱中储存时每天分析，在冷冻室中储存时每月分析。我们项目的目标首先是确定这些红树莓的定性特征，利用不同类型的包装材料优化它们在冰箱或冷冻室中的货架期，最后突出新型专利包装材料的实用性。纳米活性A薄膜在冰箱中显示出最佳的货架期，14天后，以毫克/100克鲜重计的值分别为：总酚（166.70）、单体花青素含量（50.82）、类黄酮（24.64）、抗坏血酸（32.42）以及1,1-二苯基-2-苦基肼（DPPH）测定值（95.93）。
