Kustyawati, Maria Erna and Pratama, Filli (2018) High Pressure Carbon Dioxides (HPCD) technique as an alternative method for preservation of tempeh. In: Seminar Internasional IUFOST-SEAFAST, 3-5 Oktober 2019, Jakarta. (Submitted)

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Abstract

Now days, consumers pay more attention to minimally processed foods that can maintain the quality of freshness and taste in addition to health and food safety for a certain storage period. Supercritical carbon dioxide is a non thermal processing to improve the microbial safety of product while maintaining nutritional and sensorial characteristics. Tempe is highly nutritious foods but has a short shelf life. The aim of the research was to predict the shelf life of tempeh after processed with sub/near supercritical CO2 (6.3 MPa, 25oC) for 10 min. The result showed that supercritical CO2 treatment destroyed mold tempeh to undetectable number and reduced bacterial counts. However the molds survived 104 CFU/g and the number of bacterial decreased 1 Log CFU/g when tempeh was processed with sub/near supercritical CO2. In addition, water content of tempeh slightly reduced but protein did not alter. Tempeh meets the standards of SNI No. 3144-2009. The inactivation process of mold tempeh was reversible so it can grow during storage at 30oC and produce color and compact textures. By analyzing the texture and color changes of tempeh during storage at 20, 30, and 40oC for 5 days, it was found that the shelf life of tempeh was 6.89± 0.37 days, 10.28± 1.48 days, and 2.70± 0.12 days at 30oC, 20oC and 40oC respectively. The acceptance of panelists against tempeh which was processed with CO2 and tempeh control after being stored was significantly different, and was at the level of "somewhat like" to "like" by the panelists. The conclusion was that supercritical CO2 processing can serve as an alternative method of cold pasteurization for tempeh and extend their shelf life.

Item Type: Conference or Workshop Item (Paper)
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Teknologi Hasil Pertanian
Depositing User: Dr Maria Erna Kustyawati
Date Deposited: 15 Nov 2018 08:09
Last Modified: 15 Nov 2018 08:09
URI: http://repository.lppm.unila.ac.id/id/eprint/9975

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