Investigation of Microbial Safety and Shelf-life of Locally Produced Bread and Cake in Tangail City, Bangladesh

Abstract

The study was carried out to assess the microbial quality for shelf life of different bread and cake samples, locally produced in Tangail city of Bangladesh. A total 10 samples of different brand bread and cake were collected from different shop kipper for microbiological analysis. The total viable count (TVC) of samples ranged from 1.0 × 10² cfu/g to 1.3 × 10⁶ cfu/g at first day, 1.17 × 10⁸ cfu/g to 7.3 × 10¹⁰ cfu/g at third day and 2.35 × 10¹⁴ cfu/g to 1.2 ×10¹⁸cfu/g at fifth day, where WHO permitted maximum 2.0x10⁵ cfu/g for TVC. Total coliform count (TCC) ranged from 2 cfu/g to 244 cfu/g at first day, 1.07× 10⁵ cfu/g to 3.3× 10⁸ cfu/g at third day and 2.08 × 10¹⁰ cfu/g to 1.9 × 10¹⁴ cfu/g at fifth day (maximum permitted value 200 cfu/g). Again, total fungal count (TFC) ranged from 6 cfu/g to 1.1 × 106 cfu/g at first day, 1.23× 10⁶ cfu/g to 2.2 × 10¹² cfu/g at third day and 1.82× 10¹³ cfu/g to 9.2 × 10¹⁷ cfu/g at fifth day (maximum permitted value 1×10⁵ cfu/g). According to the WHO Standard, the microbiological parameters of all collected bread and cake were out of the permitted standards after third day. It was postulated that lack of good manufacturing practices including poor hygiene and sanitation, nutrient rich bread and cake makes a good medium for microbial growth. Therefore, an immediate step should be taken to aware the bakery owner as well as consumers about the sanitation and hygiene to make safety food products.

J. Environ. Sci. & Natural Resources, 10(1): 81-84 2017