Jurnal Ilmu dan Teknologi Hasil Ternak
Vol. 17 No. 3 (2022)

Evaluation of Microbial Numbers and Physical Properties of Milk Preserved with Different Time of Pre-Heating and Pulsed Electric Fields (PEF) Exposure

Anugerah Dany Priyanto (Department of Food Technology, Faculty of Engineering, University of Pembangunan Nasional “Veteran” Jawa Timur)
Teti Estiasih (Department of Food Science and Technology, Faculty of Agricultural Technology, Universitas Brawijaya)
Angky Wahyu Putranto (Department of Bioprocess Engineering, Faculty of Agricultural Technology, Universitas Brawijaya)
Widyasari Widyasari (Department of Visual Communication Design, Faculty of Architecture and Design, University of Pembangunan Nasional “Veteran” Jawa Timur,)
Rahmawati Rahmawati (Innovation Center of Appropriate Food Technology for Lowland and Coastal Area, University of Pembangunan Nasional "Veteran" Jawa Timur)



Article Info

Publish Date
01 Dec 2022

Abstract

Milk production is intended for human consumption; hence preservation technology is required while maintaining the sensory and nutritional attributes. Some of technologies applied in milk are the use of pre-heating combined with pulsed electric fields (PEF) exposure. The aim of this study was to examine the effect of combination food preservation techniques using pre-heating and PEF with various conditions. The raw milk first received the pre-heating treatment at 70 ËšC, followed by PEF exposure. A completely randomized design (CDR) was applied in this research. It used two factors, namely factor I (pre-heating duration: 10, 20, and 30 minutes), and factor II (PEF exposure duration: 2, 4, and 6 minutes) with three replications, resulting in nine (9) treatments. The results reveal that there was a bacterial reduction within the range of 0.70-1.06 log CFU/mL. Besides, the increasing duration of pre-heating combined with PEF exposure decrease the values of viscosity, emulsion stability, and lightness of raw milk samples. Moreover, the most effective treatment observed in the raw milk-treated with pre-heating of 10 minutes and PEF of 2 minutes, with the level of TPC, viscosity, emulsion stability, and lightness of 1.88 log CFU/mL, 14.65 cP, and 95.65%, respectively

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Journal Info

Abbrev

jitek

Publisher

Subject

Agriculture, Biological Sciences & Forestry Education Other

Description

The journal will consider primary research and review articles from any source if they make an original contribution to the experimental or theoretical understanding and application of theories and methodologies of some aspects of animal products and technology-related field. It offers reader the ...