Journal
JOURNAL OF FOOD PROCESSING AND PRESERVATION
Volume 46, Issue 10, Pages -Publisher
WILEY
DOI: 10.1111/jfpp.16879
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Funding
- National Key R&D Program of China [2016YFD0400903]
- National Natural Science Foundation of China [31872908]
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High CO2 concentration improves the quality of sweet cherries during storage by enhancing respiratory metabolism and maintaining cell membrane integrity. It affects various metabolic pathways, such as glycolysis and pentose phosphate pathway, and reduces anaerobic respiration.
The effects of high CO2 (5% and 10%), on respiratory metabolism and quality of sweet cherries (Rainier and 8-102 varieties), were evaluated following storage at 0 degrees C for 60 d. Quality (respiration rate, weight loss, firmness, etc.) in sweet cherries was significantly improved by high CO2 in storage. And high CO2 enhanced pentose phosphate pathway, decreased in the glycolytic pathway and tricarboxylic acid cycle in aerobic respiration proved by elevated the contents of NADP(H), source, and fructose, as well as alleviated the levels of NAD(H). Cell membrane integrity was also better in these conditions, with higher activities of pyruvate kinase, phosphofructokinase b, and adenosine triphosphatase and lower activities of polyphenol oxidases and cytochrome C oxidases. Moreover, high CO2 decreased anaerobic respiration by inhibiting the accumulations of pyruvic acid, ethanol, and acetaldehyde, as well as by reducing the activities of pyruvate decarboxylase and alcohol dehydrogenase. Novelty impact statement High CO2 (5% or 10%) enhanced the NAD(P)H levels in sweet cherries held at 0 degrees C for 60 d. Respiratory metabolism was higher following the use of 10% CO2 during such storage. High CO2 maintained cell membrane integrity in sweet cherries stored at 0 degrees C for 60 d.
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