Studies on bio-degrading potential of fungi isolated from kitchen waste
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Date
2022-11
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Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
The non-edible portions of food that are wasted during handling, processing, or after consumption are referred to as "kitchen waste." It contains unavoidable food wastes from refrigerators and food preparation areas, as well as garbage from homes, businesses, institutions, and other sources. Due to its high moisture concentrations, kitchen waste is difficult to handle using conventional methods, such as incineration. However, it is crucial to find an alternative to securely dispose of organic waste since landfills and incinerators are closing at an alarming rate. Efficient decomposition of food waste may be achieved by a variety of fungus that uses cellulose, proteins, lipids, and carbohydrates to fulfill their energy needs. Therefore,it is possible to accelerate the biodegradation of kitchen trash by establishing consortia of these fungus. In the present study, eight fungal isolates were isolated from kitchen waste samples collected from the canteen and mess of SKUAST-Jammu. The screening of the isolates was done by measuring zone of clearance and halo formation around the growth on specific media viz. tributyrin agar, skim milk agar, carboxy methyl cellulose agar, and starch agar and five potential isolates were screened out followed by their morphological and microscopic identification. The compatibility of the potential isolates was checked by dual culture method and a consortium was prepared by the inoculation of compatible isolates in Potato dextrose broth followed by incubation at 28C for 48 hrs. 450 g of kitchen waste was used in different trials separately at different pH (5.7, 6.5, and 7.5) and temperatures (25C, 30C, and 40C), and the study showed that at 30C temperature with pH 5.7, weight reduction was highest (90.80%) The effect of consortium on pre-treated kitchen waste (acid and thermal treatments) was also studied and the results revealed that the pre-treated kitchen waste with consortium significantly degraded the waste over control and among them, acid treatment of kitchen waste with consortium showed the maximum degradation of kitchen waste (37.47%). This study concluded that the consortium of potential biodegrading fungi enhanced the biodegradation process of kitchen waste.
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Preferred for your work.__Singh, M. 2022. Studies on bio-degrading potential of fungi isolated from kitchen waste