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All Journal Jurnal Mutu Pangan : Indonesian Journal of Food Quality
Widhiasmoro, Ashari
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Agriculture, Biological Sciences & Forestry Chemistry Public Health

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Pengaruh Komposisi Susu Cair terhadap Sifat Reologi dan Potensi Risikonya pada Kecukupan Proses Termal Widhiasmoro, Ashari; Hariyadi, Purwiyatno; Purnomo, Eko Hari
Jurnal Mutu Pangan : Indonesian Journal of Food Quality Vol. 12 No. 1 (2025): Jurnal Mutu Pangan
Publisher : Department of Food Science and Technology (ITP), Faculty of Agricultural Technology, Bogor Agricultural University (IPB) in collaboration with the Indonesian Food and Beverage Association (GAPMMI), the National Agency of Drug and Food Control, and th

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmpi.2025.12.1.26

Abstract

The viscosity and density of liquid milk are influenced by temperature and composition. This study aimed to evaluate the effect of differences in liquid milk composition on rheological properties and assess its potential risk to the adequacy of the thermal process. The liquid milk used in this research included fresh milk from three different regions, full-fat recombinant milk (fat content >3%), partially skimmed recombinant milk (fat content >0.5%), and recombinant milk with cocoa solids (fat content >2%). The results showed that in 2022, fresh milk samples from West Java, Central Java, and East Java had total solids of 11.7±0.14%, 11.5±0.14%, and 12.1±0.19%, respectively; fat content of 3.6±0.15%, 4.0±0.13%, and 4.0±0.13%; and protein content of 2.9±0.04%, 2.9±0.06%, and 3.0±0.06%. All samples exhibited Newtonian fluid behavior, with density and viscosity decreasing as temperature increased. Differences in the density and viscosity of liquid milk affected the maximum flow speed in the holding tube but did not significantly impact the F₀ value. In sterilization practices with F₀ values ranging from 5.2 to 10.9 minutes, variations in maximum flow rates among fresh milk from different regions and different types of recombinant milk did not pose a risk to food safety, as the adequacy of the thermal process was still achieved (F₀>3.0 minutes).
Co-Authors Eko Hari Purnomo Purwiyatno Hariyadi