Duarte Carolina, Guerra María, Daniel Peter, Camelo Andrés López, Yommi Alejandra
Univ. of Mar del. Plata, UNMdP.
J Food Sci. 2009 May-Jul;74(4):S154-9. doi: 10.1111/j.1750-3841.2009.01118.x.
Quality changes of blueberries (Vacccinium corymbosum L. cv Brigitta) were evaluated during CA storage (0 degrees C) with different concentrations of CO(2) (5%, 10%, and 15%) combined with 5% O(2), respectively. Atmospheric air (20.9% O(2)+ 0.03% CO(2)) was used as control. From samples taken at 0, 24, and 48 d of storage, unmarketable fruits and weight loss were recorded as well as color (h), firmness (g), soluble solid content (%), titratable acidity (% citric acid), ratio, and the monomeric anthocyanin content (ppm). At each sampling time, additional units were kept for 3 d at 10 degrees C to simulate retail holding conditions. Irrespective of gas concentration, 0.9% of the initial fresh weight was lost after 48 d at 0 degrees C. CA fruit had better quality than control at the 24 d sampling but due to the high number of unmarketable fruits, this advantage was not observed at 48 d at 0 degrees C. After 24 d of storage, fruits for CA treatments were more firm and had better color, with higher anthocyanin and acidity levels. Soluble solid content showed no significant differences throughout the cold storage period. Residual effect of CA storage was observed at the retail holding condition yielding better firmness, acidity, and ratio. However, the CO(2) level tested increased the number of unmarketable fruit in long-term storage (48 d). Response of "Brigitta" blueberries to the different CO(2) levels studied was moderate and could be related to the high storage potential of this cultivar.
在0℃的气调贮藏条件下，分别用不同浓度的CO₂（5%、10%和15%）与5%的O₂组合，对蓝莓（越橘属蓝果越橘品种“布里吉塔”）的品质变化进行了评估。以大气空气（20.9% O₂ + 0.03% CO₂）作为对照。从贮藏0、24和48天采集的样品中，记录了不合格果实和重量损失，以及颜色（h）、硬度（g）、可溶性固形物含量（%）、可滴定酸度（%柠檬酸）、比率和单体花青素含量（ppm）。在每个采样时间，额外的样品在10℃下保存3天，以模拟零售保存条件。无论气体浓度如何，在0℃贮藏48天后，初始鲜重损失了0.9%。在24天采样时，气调贮藏的果实品质优于对照，但由于不合格果实数量较多，在0℃贮藏48天时未观察到这一优势。贮藏24天后，气调处理的果实更硬，颜色更好，花青素和酸度水平更高。在整个冷藏期间，可溶性固形物含量没有显著差异。在零售保存条件下观察到气调贮藏的残留效应，果实具有更好的硬度、酸度和比率。然而，所测试的CO₂水平增加了长期贮藏（48天）中不合格果实的数量。“布里吉塔”蓝莓对所研究的不同CO₂水平的反应适中，这可能与其该品种较高的贮藏潜力有关。
