Impact of storage temperatures on the quality of oven-dried Black Jelly Mushroom, Auricularia nigricans (Agaricomycetes)

Yusof, Siti-Nurhuda Mohammad and Raseetha, Siva and Sabaratnam, Vikineswary and Abdullah, Sumaiyah and Razali, Razifah Mohd and Bahar, Asrul (2022) Impact of storage temperatures on the quality of oven-dried Black Jelly Mushroom, Auricularia nigricans (Agaricomycetes). International Journal of Medicinal Mushrooms, 24 (4). pp. 83-90. ISSN 1521-9437,

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Abstract

The aim of this study was to determine the effects of various storage temperatures (4, 25, and 35 degrees C) on quality parameters and microbial counts of oven-dried black jelly mushroom (Auricularia nigricans) for a period of 60 days. The mushroom was dried using a cabinet dryer at 60 degrees C for 24 h to a constant weight prior to storage. The water activity of oven-dried A. nigricans indicated a 96% increment (35 degrees C) compared to 40% (4 degrees C) after being stored for 60 days. Similarly, moisture content showed approximately 4-fold elevation at 35 degrees C compared to a 2-fold increase at 4 degrees C after 60 days. However, at the end of storage, total phenolic content underwent a 46% reduction for storage at 35 degrees C compared to a 29% reduction at 4 degrees C. Likewise, the ferric reducing antioxidant power was also reduced nearly 45% (35 degrees C) compared to 40% (4 degrees C). Microbial counts at 4 degrees C were lower 6.40 log colony forming units (CFU)/g] compared to storage at 35 degrees C (6.47 log CFU/g) after 60 days. Taken altogether, the best storage temperature for oven-dried black jelly mushroom was at 4 degrees C.

Item Type: Article
Funders: Geran Penyelidikan Khas Grant Scheme, (UiTM) [600-RMC/GPK 5/3 (229/2020)]
Uncontrolled Keywords: Oven drying; Black jelly mushroom; Auricularia nigricans; Antioxidant; Temperature; Mold; Yeast; Medicinal mushrooms
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QK Botany
R Medicine > RM Therapeutics. Pharmacology
Divisions: Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 Aug 2023 08:27
Last Modified: 24 Aug 2023 08:27
URI: http://eprints.um.edu.my/id/eprint/43106

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