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Malolactic fermentation in lingonberry juice and its use as a preservative
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- Bergentall, Martina (author)
- RISE,Jordbruk och livsmedel
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- Niimi, Jun (author)
- RISE,Jordbruk och livsmedel
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- Persson, Ingela (author)
- RISE,Jordbruk och livsmedel
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- (creator_code:org_t)
- 2024
- 2024
- English.
- In: Food microbiology (Print). - 0740-0020 .- 1095-9998. ; 121
- Journal article (peer-reviewed)
Abstract
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- Lingonberry is a common wild berry that is often sold as jams and beverages. It naturally contains high amounts of the weak acid preservative benzoic acid making it an interesting ingredient for shelf-life extension. Despite this, their use as a raw ingredient is limited by the inherently intense sour taste. This study aimed to improve the taste of lingonberry juice by subjecting it to malolactic fermentation in order to reduce the sourness, and to investigate the benzoic acid in lingonberries as a natural preservative in juice blends by determining the microbial stability. After initial screening of lactic acid bacteria, a Lactiplantibacillus plantarum strain was used as the starter for subsequent investigations. Upon raising the pH, all malic acid was completely converted to lactic acid after seven days. The fermented juice was mixed with blackcurrant juice in different proportions. Challenge tests of the blends showed Listeria monocytogenes could not grow in any juice samples, while Candida albicans only grew in the pure blackcurrant juice. Aspergillus brasiliensis growth was delayed in all samples containing benzoic acid in a concentration-dependent manner. The sourness and astringency were substantially reduced in the juice with added L. plantarum compared to the unfermented juice. © 2024 The Authors
Subject headings
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Livsmedelsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Food Science (hsv//eng)
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- ref (subject category)
- art (subject category)
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- AGRICULTURAL SCIENCES
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