Modified Atmospheric CO<sub>2</sub> Levels for Maintenance of Fruit Weight and Nutritional Quality upon Long-Term Storage in Blueberry (<i>Vaccinium corymbosum</i> 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 necessa...

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Autores principales:	Tina Smrke, Nika Cvelbar Weber, Robert Veberic, Metka Hudina, Jerneja Jakopic
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	highbush blueberry controlled atmosphere weight loss sugar-to-organic acid ratio phenolics Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/02f0b637501e40ee9dce2677e63bd28b
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spelling	oai:doaj.org-article:02f0b637501e40ee9dce2677e63bd28b2021-11-25T17:47:31ZModified Atmospheric CO<sub>2</sub> Levels for Maintenance of Fruit Weight and Nutritional Quality upon Long-Term Storage in Blueberry (<i>Vaccinium corymbosum</i> L.) ‘Liberty’10.3390/horticulturae71104782311-7524https://doaj.org/article/02f0b637501e40ee9dce2677e63bd28b2021-11-01T00:00:00Zhttps://www.mdpi.com/2311-7524/7/11/478https://doaj.org/toc/2311-7524Blueberry 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 (<i>Vaccinium corymbosum</i> L.) ‘Liberty’ under the air control (0.5% CO<sub>2</sub>, 19.5% O<sub>2</sub>, 80% N<sub>2</sub>) and controlled atmosphere conditions of: 5% CO<sub>2</sub>, 5% O<sub>2</sub>, 90% N<sub>2</sub>; 15% CO<sub>2</sub>, 5% O<sub>2</sub>, 80% N<sub>2</sub>; and 25% CO<sub>2</sub>, 5% O<sub>2</sub>, 70% N<sub>2</sub>. 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<sub>2</sub> and lowest with 5% CO<sub>2</sub>, with minor variations. The greatest breakdown of total sugars was seen for the air control, and the least for 25% CO<sub>2</sub>. 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<sub>2</sub>. The contents of all of the identified phenolics significantly decreased with 15% and 25% CO<sub>2</sub>. After 62 days of storage with 5% CO<sub>2</sub>, 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<sub>2</sub> 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<sub>2</sub>, 5% O<sub>2</sub>, and 90% N<sub>2</sub>.Tina SmrkeNika Cvelbar WeberRobert VebericMetka HudinaJerneja JakopicMDPI AGarticlehighbush blueberrycontrolled atmosphereweight losssugar-to-organic acid ratiophenolicsPlant cultureSB1-1110ENHorticulturae, Vol 7, Iss 478, p 478 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	highbush blueberry controlled atmosphere weight loss sugar-to-organic acid ratio phenolics Plant culture SB1-1110
spellingShingle	highbush blueberry controlled atmosphere weight loss sugar-to-organic acid ratio phenolics Plant culture SB1-1110 Tina Smrke Nika Cvelbar Weber Robert Veberic Metka Hudina Jerneja Jakopic Modified Atmospheric CO<sub>2</sub> Levels for Maintenance of Fruit Weight and Nutritional Quality upon Long-Term Storage in Blueberry (<i>Vaccinium corymbosum</i> L.) ‘Liberty’
description	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 (<i>Vaccinium corymbosum</i> L.) ‘Liberty’ under the air control (0.5% CO<sub>2</sub>, 19.5% O<sub>2</sub>, 80% N<sub>2</sub>) and controlled atmosphere conditions of: 5% CO<sub>2</sub>, 5% O<sub>2</sub>, 90% N<sub>2</sub>; 15% CO<sub>2</sub>, 5% O<sub>2</sub>, 80% N<sub>2</sub>; and 25% CO<sub>2</sub>, 5% O<sub>2</sub>, 70% N<sub>2</sub>. 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<sub>2</sub> and lowest with 5% CO<sub>2</sub>, with minor variations. The greatest breakdown of total sugars was seen for the air control, and the least for 25% CO<sub>2</sub>. 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<sub>2</sub>. The contents of all of the identified phenolics significantly decreased with 15% and 25% CO<sub>2</sub>. After 62 days of storage with 5% CO<sub>2</sub>, 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<sub>2</sub> 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<sub>2</sub>, 5% O<sub>2</sub>, and 90% N<sub>2</sub>.
format	article
author	Tina Smrke Nika Cvelbar Weber Robert Veberic Metka Hudina Jerneja Jakopic
author_facet	Tina Smrke Nika Cvelbar Weber Robert Veberic Metka Hudina Jerneja Jakopic
author_sort	Tina Smrke
title	Modified Atmospheric CO<sub>2</sub> Levels for Maintenance of Fruit Weight and Nutritional Quality upon Long-Term Storage in Blueberry (<i>Vaccinium corymbosum</i> L.) ‘Liberty’
title_short	Modified Atmospheric CO<sub>2</sub> Levels for Maintenance of Fruit Weight and Nutritional Quality upon Long-Term Storage in Blueberry (<i>Vaccinium corymbosum</i> L.) ‘Liberty’
title_full	Modified Atmospheric CO<sub>2</sub> Levels for Maintenance of Fruit Weight and Nutritional Quality upon Long-Term Storage in Blueberry (<i>Vaccinium corymbosum</i> L.) ‘Liberty’
title_fullStr	Modified Atmospheric CO<sub>2</sub> Levels for Maintenance of Fruit Weight and Nutritional Quality upon Long-Term Storage in Blueberry (<i>Vaccinium corymbosum</i> L.) ‘Liberty’
title_full_unstemmed	Modified Atmospheric CO<sub>2</sub> Levels for Maintenance of Fruit Weight and Nutritional Quality upon Long-Term Storage in Blueberry (<i>Vaccinium corymbosum</i> L.) ‘Liberty’
title_sort	modified atmospheric co<sub>2</sub> levels for maintenance of fruit weight and nutritional quality upon long-term storage in blueberry (<i>vaccinium corymbosum</i> l.) ‘liberty’
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/02f0b637501e40ee9dce2677e63bd28b
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_version_	1718411962824523776

Modified Atmospheric CO<sub>2</sub> Levels for Maintenance of Fruit Weight and Nutritional Quality upon Long-Term Storage in Blueberry (<i>Vaccinium corymbosum</i> L.) ‘Liberty’

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