Modified atmospheric CO$_2$ levels for maintenance of fruit weight and nutritional quality upon long-term storage in blueberry (Vaccinium corymbosum L.) 'Liberty'
| Autor: | Robert Veberic, Tina Smrke, Nika Weber, Jerneja Jakopic, Metka Hudina |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Controlled atmosphere
sladkorji phenolics Flavonoid Plant Science organske kisline Horticulture Vaccinium corymbosum SB1-1110 storage chemistry.chemical_compound sugar-to-organic acid ratio Weight loss controlled atmosphere medicine Sugar chemistry.chemical_classification biology izguba teže Plant culture kakovost skladiščenje biology.organism_classification highbush blueberry chemistry Modified atmosphere Anthocyanin kemična sestava udc:543 medicine.symptom weight loss ameriška borovnica Vaccinium Organic acid nadzorovana atmosfera |
| Zdroj: | Horticulturae, vol. 7, no. 11, 478, 2021. Horticulturae, Vol 7, Iss 478, p 478 (2021) Horticulturae Volume 7 Issue 11 |
| ISSN: | 2311-7524 |
| Popis: | 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% CO2, 19.5% O2, 80 % N2) and controlled atmosphere conditions of: 5% CO2, 5% O2, 90% N2 15% CO2, 5% O2, 80% N2 and 25% CO2, 5% O2, 70% N2. 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% CO2 and lowest with 5% CO2, with minor variations. The greatest breakdown of total sugars was seen for the air control, and the least for 25% CO2. 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% CO2. The contents of all of the identified phenolics significantly decreased with 15% and 25% CO2. After 62 days of storage with 5% CO2, 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% CO2 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% CO2, 5% O2, and 90% N2. |
| Databáze: | OpenAIRE |
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