Effect of Storage on Proximate Composition, Fungal Incidence and Aflatoxin Content in Selected Edible Mushrooms.

Authors

  • Clementina O. Adenipekun

Keywords:

Edible mushrooms, storage: Proximate composition; Aflatoxin

Abstract

Mushrooms are saprophytes found in forests and farmlands during rainy seasons. Cultivated and wild edible mushrooms such as Pleurotus ostreatus var. HK35, Pleurotus ostreatus var. florida, Termitomyces robustus, Termitomyces clypeatus and Lentinus squarrosulus are fibrous and not poisonous. They contain important macro and micronutrients like proteins, potassium, vitamin D, selenium, niacin, etc. Fresh mushroom samples were harvested and stored at 0, 30 and 60 days storage intervals. Isolation of fungi were done from the mushroom samples following standard procedures. They were sub-cultured to obtain pure cultures before identification based on morphological and microscopic characteristics. The isolated fungi were later taken for aflatoxin extraction, detection and quantification following standard procedures. The mushroom samples were also subjected to proximate composition analysis. The data obtained were subjected to ANOVA using SPSS (VERSION 10.0) software at p ≤0.05. Means were separated using Duncan’s Multiple Range Test. Molds such as Trichoderma, Fusarium, Penicillium and aflatoxigenic species of Aspergillus (Aspergillus niger, Aspergillus flavus) were recovered from all samples at varying levels. A high increase in total carbohydrates and crude protein content was recorded across all mushroom samples at different storage levels. Aflatoxin production by A. flavus was significantly higher in the stored wild edible mushrooms (0.001–0.027μg/kg) than the cultivated mushrooms. However, a decrease in aflatoxin quantity was recorded with increasing storage days. This finding could be attributed to the reduced moisture content with increasing dry matter due to concentration of soluble solids. For both wild and cultivated mushrooms, consumption may be better advised only after storage

Downloads

Published

2022-04-14

How to Cite

Adenipekun , C. O. (2022). Effect of Storage on Proximate Composition, Fungal Incidence and Aflatoxin Content in Selected Edible Mushrooms. JOURNAL OF SCIENCE RESEARCH, 18(1), 9. Retrieved from http://jsribadan.ng/index.php/ojs/article/view/134