Ultrafiltration performance of PVDF, PES, and cellulose membranes for the treatment of coconut water (Cocos nucifera L.)

Food Science and Technology (Campinas)

Isabel Cristina Do Nascimento Debien¹  Maria Thereza De Moraes Santos Gomes¹  Ricardo Schmitz Ongaratto¹  Luiz Antonio Viotto¹ 

[1] ,University of Campinas School of Food Engineering Campinas SP ,Brazil

关键词: coconut water;    polyphenol oxidase;    peroxidase;   

DOI  :  10.1590/S0101-20612013000400012

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY   
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