Reliability of Time-Temperature Indicator From Corn and Red Palm Oil Blending For Monitoring Microbial Growth of Pasteurized Milk

Food ScienTech Journal Pub Date : 2023-12-01 DOI:10.33512/fsj.v5i2.18094

Reza Widyasaputra, Ryan Firman Syah, Adi Ruswanto, Masna Yanti Fau

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Abstract

Time-Temperature Indicator made from corn oil and red palm oil had potential to be used in food cold chain. However, the evaluation of its reliability was required. The aim of this study was to evaluate the reliability of the indicator to monitor the changes of pasteurized milk quality based on microbial growth at several storage temperatures. This study was conducted in three stages. Stage 1 was making corn oil and red palm oil blending with 70:30 (%v/v) ratio. Stage 2 was measurement of diffusion length, coefficient, kinetics and activation energy at five storage temperatures (4, 29, 37, 44, and 51 ºC). Stage 3 was counting the total microbes at three different storage temperatures (8, 29, and 40 ºC). The result showed that the activation energy of corn oil and red palm oil Time-Temperature indicator was 36.796 kJ/mol. Meanwhile, the activation energy of pasteurized milk microbial growth kinetics was 44.021 kJ/mol. The reliability of the indicator was good, because the activation energy difference value between microbial growth and the indicator was lower than 25 kJ/mol.

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用玉米和红棕榈油调和时间-温度指示剂监测巴氏杀菌乳微生物生长的可靠性

以玉米油和红棕榈油为原料制成的时间-温度指示剂具有应用于食品冷链的潜力。但是，需要对其可靠性进行评估。本研究的目的是评估该指标在不同储存温度下监测微生物生长的巴氏奶质量变化的可靠性。这项研究分三个阶段进行。第1阶段为玉米油与红棕榈油以70:30 (%v/v)的比例调配。第二阶段是在5种储存温度(4、29、37、44和51℃)下测量扩散长度、系数、动力学和活化能。第三阶段是在三种不同的储存温度(8、29和40℃)下对微生物总数进行计数。结果表明，玉米油和红棕榈油的时间-温度指标活化能为36.796 kJ/mol。同时，巴氏乳微生物生长动力学活化能为44.021 kJ/mol。该指标与微生物生长的活化能差值均小于25 kJ/mol，可靠性较好。

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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Food ScienTech Journal

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审稿时长

8 weeks