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Ultrafiltration of Syzygium cumini (L.) seeds extract: Analysis of flux decline and extract stability
Author(s) -
Balyan Upasna,
Sarkar Biswajit
Publication year - 2018
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.2166
Subject(s) - chemistry , chromatography , ultrafiltration (renal) , nanofiltration , syzygium , membrane , permeation , botany , biochemistry , biology
The aim of this study was to analyze flux decline behavior during ultrafiltration (UF) of jamun ( Syzygium cumini [L.]) seed extract using Harmia's model and Koltuniewicz's surface‐renewal model. The effects of different transmembrane pressure and stirrer speed on the membrane fouling, permeate flux, and permeate quality were studied. Analysis of the results revealed that UF of seed extract was controlled by a cake filtration mechanism. Phenolic compounds in UF clarified and nanofiltration concentrated extract were identified and quantified using high‐performance liquid chromatography. Storage stability of quality parameters (total phenolic content (TPC), total flavonoid content (TFC), color, and clarity) of jamun seed extract and nanofiltration concentrated extract were studied at 4, 27, and 37 °C for 30 days. A first‐order kinetic model was successfully used to evaluate the degradation of TPC and TFC during storage. Three models (Arrhenius, Eyring, and Ball) were shown to be suitable to describe the temperature dependence of the deterioration rate constant of TPC and TFC. Experimental results confirmed that membrane processing of jamun seed extract enhanced the storage stability of all the quality parameters tested. The estimated model parameters might be useful for design and scale‐up of the system and to identify the appropriate storage conditions for industrial processing.