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Title: Tannins in Fruit Juices and their Removal
Authors: Trakul Prommajak
Noppol Leksawasdi
Nithiya Rattanapanone
Keywords: Fruit juice
Issue Date: 2020
Publisher: Chiang Mai University
Citation: Chiang Mai University (CMU) Journal of Natural Sciences 19,1 (Jan-Mar 2020), p.76-90
Abstract: Tannins are groups of phenolic compounds that cause astringency and turbidity in fruit juices. Many factors had an influence on the concentration of tannins in fruit juices, including cultivar, parts and maturity stages, as well as pH and viscosity of juices. Many methods were investigated for tannins removal from fruit juices. Physical methods included heat treatment and membrane filtration. Chemical methods were based on clarifying agents included polysaccharides (starch and chitosan), proteins (gelatin and casein) and synthetic polymers (polyvinyl polypyrolidone). The enzymatic method was based on the application of enzyme tannase to hydrolyze tannins into soluble compounds. Tannins removal efficiency of each method depended on fruit juice, type and parameters of the method. Downstream process should be considered especially for application of clarifying agents.
Description: Chiang Mai University (CMU) Journal of Natural Sciences is dedicated to the publication of original research in Sciences & Technology and the Health Sciences. Submissions are welcomed from CMU, as well as other Thai and foreign institutions. All submissions must be original research not previously published or simultaneously submitted for publication. Manuscripts are peer reviewed using the double -blinded review system by at least 2 reviewers before acceptance. The CMU Journal of Natural Sciences is published four times a year, in January, April, July and October.
ISSN: 2465-4337
Appears in Collections:CMUL: Journal Articles

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