BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Vol. 27 No. 3 (2020): BIOTROPIA Vol. 27 No. 3 December 2020

Antifungal Citrus hystrix Extract as Natural Food Preservative

Nisa, Khoirun (Unknown)
Herawati, Ervika Rahayu Novita (Unknown)
Nurhayati, Septi (Unknown)
Rosyida, Vita Taufika (Unknown)



Article Info

Publish Date
23 Dec 2020

Abstract

During their storage, the traditional ready-to-eat food, such as sticky rice cake, is easily contaminated by spoilage pathogens. Hence, this study aims to evaluate the effect of Citrus hystrix extract in reducing spoilage pathogens in sticky rice cake during storage. The experimental sticky rice cake was prepared and formulated with Citrus hystrix extract at varied concentrations of 0.65%, 1.26%, and 1.82% (w/w). Treated samples were stored at room temperature for 28 days and evaluated periodically for their microbial activity (total plate count), thiobarbituric acid reactive substances (TBARS), and sensory analysis. For its antifungal activity, the Citrus hystrix extract was also compared against Penicillium sp. and Aspergillus nidulans prior to formulation. Results exhibited a significant advantage of the added extracts to the sticky rice cake. All extract levels effectively eliminated the spoilage microorganisms and significantly lowered the TBARS values. The physico-chemical properties of sticky rice cake including pH, water activity, and moisture content were equal among all the formulated samples and slightly different at 1.82% (w/w) extract level. Moreover, the addition of Citrus hystrix extract up to 1.82% did not affect the acceptability sensory attributes of the sticky rice cake as compared to the control which had no Citrus hystrix extract (p > 0.05).

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Journal Info

Abbrev

biotropia

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

Description

BIOTROPIA, The Southeast Asian Journal of Tropical Biology, is a scientific publication of the Southeast Asian Ministers of Education Organization (SEAMEO) – Southeast Asian Regional Center for Tropical Biology (BIOTROP). It publishes articles in the broad areas of tropical ecosystems and ...