Ultrafiltration performance of PVDF, PES, and cellulose membranes for the treatment of coconut water (Cocos nucifera L.)
| Autor: | Maria Thereza de Moraes Santos Gomes, Isabel C. N. Debien, Ricardo Schmitz Ongaratto, Luiz Antonio Viotto |
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| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Chromatography Ultrafiltration lcsh:TX341-641 peroxidase Polymer Polyphenol oxidase Polyvinylidene fluoride coconut water chemistry.chemical_compound Membrane Cocos nucifera chemistry lcsh:Technology (General) lcsh:T1-995 Cellulose polyphenol oxidase lcsh:Nutrition. Foods and food supply Flux (metabolism) Food Science Biotechnology |
| Zdroj: | Food Science and Technology, Volume: 33, Issue: 4, Pages: 676-684, Published: DEC 2013 Food Science and Technology, Vol 33, Iss 4, Pp 676-684 (2013) Food Science and Technology v.33 n.4 2013 Food Science and Technology (Campinas) Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA) instacron:SBCTA |
| ISSN: | 1678-457X |
| DOI: | 10.1590/s0101-20612013000400012 |
| Popis: | Ultrafiltration (UF) inhibits the enzymatic activity which is responsible for color changes of coconut water without the need for heat treatment. In the present study, UF performance in terms of the permeate flux and enzymatic retention of the coconut water was evaluated at laboratory unit (LU) and pilot unit (PU). The membranes studied were polyethersulfone 150 kDa (UP150), polyvinylidene fluoride 150 kDa (UV150) and cellulose 30 kDa (UC030). The UP150 membrane showed the best permeate flux. The UC030 membrane showed the lowest flux, but it resulted in 100% enzymatic retention, while the other membranes showed enzymatic retentions between 71 and 85%. The application of the UC030 in the pilot unit (PU) resulted in a flux value higher than that obtained in the LU due to the tangential velocity effect. The UC030 membrane has proved adequate for industrial applications. |
| Databáze: | OpenAIRE |
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