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<p>Certified reference materials (CRMs) are essential for ensuring high-quality measurements and guaranteeing their metrological traceability to the International System of Units (SI). Reliable analytical results are indispensable for consumer protection. In this context, this work conducted a feasibility study of a candidate certified reference material for lactose-free powdered milk. A small-scale batch was produced and subjected to studies of homogeneity, transportation stability, and characterization according to ISO 17034 and ISO 33405. This batch was considered sufficiently homogeneous and could be transported for up to 40&#xa0;days at a temperature of up to (22 ± 2) °C without compromising the values of lactose and water content, and with no changes in its appearance. The informative value for the mass fraction of lactose was (1.06 ± 0.193) mg/g (<i>k</i> = 2, 95%) for the powdered milk on a wet basis. Since the produced batch was sufficiently homogeneous and stable under the proposed transport conditions, the production of the lactose-free powdered milk CRM was considered initially feasible.</p>

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Feasibility study for the production of a lactose-free certified reference material in powder milk

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月24日

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  • Raissa Bosich Antunes Jambo,
  • Rodrigo Vivarelli Poggi Leal,
  • Eliane Cristina Pires do Rego,
  • Vanderléa de Souza

摘要

Certified reference materials (CRMs) are essential for ensuring high-quality measurements and guaranteeing their metrological traceability to the International System of Units (SI). Reliable analytical results are indispensable for consumer protection. In this context, this work conducted a feasibility study of a candidate certified reference material for lactose-free powdered milk. A small-scale batch was produced and subjected to studies of homogeneity, transportation stability, and characterization according to ISO 17034 and ISO 33405. This batch was considered sufficiently homogeneous and could be transported for up to 40 days at a temperature of up to (22 ± 2) °C without compromising the values of lactose and water content, and with no changes in its appearance. The informative value for the mass fraction of lactose was (1.06 ± 0.193) mg/g (k = 2, 95%) for the powdered milk on a wet basis. Since the produced batch was sufficiently homogeneous and stable under the proposed transport conditions, the production of the lactose-free powdered milk CRM was considered initially feasible.