Separation and quantification of milk proteins with the addition of cheese whey by lab-on-a-chip
Abstract The objective of this work was to evaluate microfluidic chip electrophoresis, known as lab-on-a-chip technique, for the detection of milk adulteration using cheese whey in comparison with SDS-PAGE. Raw, pasteurized, processed at an ultra-high temperature (UHT), and powdered milk samples rec...
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Published in | Pesquisa agropecuaria brasileira Vol. 58 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Embrapa Secretaria de Pesquisa e Desenvolvimento; Pesquisa Agropecuária Brasileira
01.01.2023
Embrapa Informação Tecnológica |
Subjects | |
Online Access | Get full text |
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Summary: | Abstract The objective of this work was to evaluate microfluidic chip electrophoresis, known as lab-on-a-chip technique, for the detection of milk adulteration using cheese whey in comparison with SDS-PAGE. Raw, pasteurized, processed at an ultra-high temperature (UHT), and powdered milk samples received increasing concentrations of cheese whey (0, 1, 2.5, 5, 10, 20, 30, 50, and 100% v/v), and were subjected to lab-on-a-chip electrophoresis and SDS-PAGE to detect their mixtures. The lab-on-a-chip methodology was able to separate and quantify milk proteins. In addition, the tested technique is easy, rapid, sensitive, and can detect the addition of cheese whey in milk from the lowest level tested (1%) for milk proteins α-casein and β-casein.
Resumo O objetivo deste trabalho foi avaliar a eletroforese com dispositivo de microfluidos, conhecida como técnica lab-on-a-chip, para detecção de adulteração de leite com soro de queijo, em comparação ao SDS-PAGE. Amostras de leite cru, pasteurizado, processado em temperatura ultra-alta (UHT) e em pó receberam adição de soro de queijo em concentrações crescentes (0, 1, 2,5, 5, 10, 20, 30, 50 e 100% v/v) e foram submetidas a eletroforese lab-on-a-chip e SDS-PAGE para detectar suas misturas. A metodologia lab-on-a-chip foi capaz de separar e quantificar as proteínas do leite. Além disso, a técnica lab-on-a-chip é fácil, rápida, sensível e pode detectar adição de soro de queijo no leite do nível mais baixo testado (1%) para as proteínas do leite α-caseína e β-caseína. |
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ISSN: | 0100-204X 1678-3921 1678-3921 |
DOI: | 10.1590/s1678-3921.pab2023.v58.03099 |