20.500.12556/RUL-133117 Modified atmospheric CO$_2$ levels for maintenance of fruit weight and nutritional quality upon long-term storage in blueberry (Vaccinium corymbosum L.) 'Liberty' Blueberry fruits have gained consumer attention in recent years due to their good taste and high nutritional value. However, the short shelf-life of the fruit is one of the main downsides in intensive blueberry production. Therefore, optimized storage technology with a modified atmosphere is necessary to prolong blueberry fruit quality on the market. The aim of this study was to investigate long-term storage of fruit of the highbush blueberry (Vaccinium corymbosum L.) ‘Liberty’ under the air control (0.5% CO$_2$, 19.5% O$_2$, 80% N$_2$) and controlled atmosphere conditions of: 5% CO$_2$, 5% O$_2$, 90% N$_2$; 15% CO$_2$, 5% O$_2$, 80% N$_2$; and 25% CO$_2$, 5% O$_2$, 70% N$_2$. Fruit sampling was performed four times during storage (17, 30, 44, 62 days). Evaluation was carried out for fruit weight, total and individual sugar and organic acid contents, sugar-to-organic acid ratio, and individual phenolics contents. After 44 days of storage, weight loss was highest with 15% CO$_2$ and lowest with 5% CO$_2$, with minor variations. The greatest breakdown of total sugars was seen for the air control, and the least for 25% CO$_2$. Organic acids were significantly reduced under all of these storage conditions. Consequently, a high sugar-to-organic acid ratio was maintained in fruit stored with 25% CO$_2$. The contents of all of the identified phenolics significantly decreased with 15% and 25% CO$_2$. After 62 days of storage with 5% CO$_2$, there were small decreases in flavan-3-ols and hydroxycinnamic acids, while flavonoid and anthocyanin contents were unchanged, or for some individual phenolics, content increased. These data show that 15% CO$_2$ or higher accelerates degradation of the phenolics. We can conclude that for maintenance of weight and nutritional quality of the blueberry fruit ‘Liberty’, the optimal controlled atmosphere under long-term storage is 5% CO$_2$, 5% O$_2$, and 90% N$_2$. highbush blueberry Vaccinium corymbosum controlled atmosphere storage phenolics weight loss sugar-to-organic acid ratio ameriška borovnica skladiščenje nadzorovana atmosfera kemična sestava kakovost izguba teže sladkorji organske kisline true false true Angleški jezik Slovenski jezik Članek v reviji 2021-11-11 14:19:13 2021-11-11 14:19:14 2022-09-12 04:14:56 0000-00-00 00:00:00 2021 0 0 14 str. iss. 11, art. 478 Vol. 7 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 543 2311-7524 10.3390/horticulturae7110478 84572163 RAZ_Smrke_Tina_2021.pdf RAZ_Smrke_Tina_2021.pdf 1 85E99AFDF49833D02E7DC997101DA026 eae5b03fd4236c0f55886eb207384bbda9b936fba59201f1bfacfa67bfa860cb 09e5332d-42f3-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=150928 https://www.mdpi.com/2311-7524/7/11/478 1 e89387c6-42f1-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=150927 Biotehniška fakulteta 0 0 0