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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue July 2023, 44 (4)                                     Back


nstantaneous and historical temperature effects on a-pinene

Quantitative characterization of microbial load in wild-harvested

edible insects of Nagaland, India

 

P. Kiewhuo1,2, N. Trivedi3, L. Mozhui1, M.K. Dhillon3 and L.N. Kakati4*   

1Department of Zoology, Nagaland University, Lumami-798 627, India

2Department of Zoology, Don Bosco College, Kohima-797 001, India

3Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, India

4Faculty of Science, Assam Down Town University, Panikhaiti-781 026, India

*Corresponding Author Email : lakhmi.kakati1956@gmail.com                     *ORCiD: https://orcid.org/0000-0003-4613-2263

 

Received: 26.09.2022                                                                                                        Revised: 30.12.2022                                                                                 Accepted: 04.02.2023

 

 

Abstract

Aim: To analyze the microbial load in raw and roasted insects in an attempt to determine the efficiency of heat treatment in removing the microbial load.

Methodology: Fresh as well as roasted (over low flame for 15 min) insect samples were used to determine the microbial contaminants. Crushed insect samples were suspended in sterile half-strength nutrient broth solution and were further serially diluted 10-fold (up to 10-10) in isotonic half-strength nutrient broth solution. The total number of aerobic mesophilic microorganisms were determined on plate count agar and expressed as log Cfu g-1.

Results: Differences in the number of microbial colonies were observed in fresh and roasted samples. The microbial load ranged from 6.30-8.75 log Cfu g-1 and showed that the highest microbial colonies were present in the fresh samples. The average log Cfu g-1 in fresh insect samples (7.57±0.87) was significantly higher (P<0.05) as compared to roasted samples (7.07±0.76).

Interpretation: Edible insects require proper processing before consumption to reduce microbial contamination and further study is needed to identify specific microbes/food pathogens to develop microbial quality and parameters to ensure consumer safety.

Key words: Alternative food, Edible insects, Food safety, Microbial contaminants, Traditional foods

 

 

 

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