Use of Ultrafiltration Technology to Concentrate Whey Proteins after White Cheese Manufacturing

Q3 Agricultural and Biological Sciences

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI:10.15446/rfnam.v75n2.98600

Edinson Bejarano-Toro, J. U. Sepúlveda-Valencia, Eduardo Rodriguez Sandoval

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引用次数: 1

Abstract

Dairy industry generates contamination due to whey dumping from the manufacture of coagulated products. Ultrafiltration technology has been extensively studied in acid whey; however, research on sweet whey ─which is obtained from the production of fresh white cheese (Campesino cheese)─ is scarce. The objective of this study was to concentrate sweet whey proteins by ultrafiltration and to evaluate the process conditions. A polyethersulfone membrane with a molecular weight cut-off of 10 kDa was used. The effect of volumetric concentration factor between 5 and 18, transmembrane pressure between 2.5 and 5 bar was evaluated on the permeate flow, protein retention coefficient, and retention yield using a response surface methodology. The process optimization was carried out in that same range. Protein and fat were concentrated and underwent ultrafiltration; however, a less stable system was obtained. A higher concentration of protein can result in more collisions between molecules, thus generating flocculation. Whey protein concentrates had 18.2% of total solids out of which protein represents 45%.

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用超滤技术浓缩白奶酪加工后的乳清蛋白

乳制品工业产生污染，由于乳清倾销从生产凝固产品。超滤技术在酸性乳清中得到了广泛的研究;然而，对从新鲜白奶酪(Campesino奶酪)生产中获得的甜乳清的研究却很少。本研究的目的是用超滤法浓缩甜乳清蛋白，并对其工艺条件进行评价。采用分子量截止值为10 kDa的聚醚砜膜。利用响应面法评价了体积浓度因子在5 ~ 18之间、跨膜压力在2.5 ~ 5 bar之间对渗透流量、蛋白质保留系数和保留率的影响。在相同的范围内进行了工艺优化。蛋白质和脂肪浓缩后进行超滤;然而，得到了一个不太稳定的系统。蛋白质浓度越高，分子间的碰撞就越多，从而产生絮凝现象。乳清浓缩蛋白占总固体的18.2%，其中蛋白质占45%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Revista Facultad Nacional de Agronomia Medellin Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： La Revista Facultad Nacional de Agronomía Medellín (RFNA), de la Universidad Nacional de Colombia, Sede Medellín, Facultad de Ciencias Agrarias, es una publicación científica editada desde el año 1939, en formato impreso y digital y de acceso abierto desde la web —sin costo para autores y lectores—. Está orientada a investigadores que crean conocimiento disciplinar y multidisciplinar que articula la ciencia y la tecnología para hacer más productivo el campo a nivel empresarial y de economía campesina. La Revista tiene como objetivo divulgar resultados de investigación mediante artículos originales, inéditos y arbitrados (peer review) de carácter científico que respondan a preguntas específicas y que proporcionen sustento y pruebas a una hipótesis, en aspectos relacionados con las Ciencias Agronómicas, Producción animal, Ciencias Forestales, Ingeniería Agrícola, de Alimentos y otras afines que contribuyan a la solución de los limitantes del agro a nivel nacional, regional e internacional. La Revista recibe y publica, sin ningún costo, artículos en idioma inglés de investigación, revisión, reseñas y cartas al editor. Desde el 2017 la periodicidad de publicación es cuatrimestral, se publican tres números al año con circulación nacional e internacional, en los siguientes períodos: Enero - Abril Mayo - Agosto Septiembre - Diciembre This journal does not charge APCs or submission charges.