Microbial assessment of pathogenic bacterial growth in ice cream and kulfa

Microsc Res Tech. 2018 Dec;81(12):1501-1505. doi: 10.1002/jemt.23150. Epub 2018 Oct 23.

Abstract

Current study was focused to examine the total bacterial count in packed and unpacked ice cream and kulfa collected from 12 different localities of Lahore. The bacterial colonies were isolated and grown on agar-broth media under sterilized conditions. Serial dilution technique was used to compose the replicates to get total viable count of bacteria. Results in case of packed ice cream samples indicated maximum (618 × 10-6 CFU/g) and minimum (79 × 10-6 CFU/g) bacterial count while in case of unpacked ice cream samples maximum and minimum bacterial count was 163 × 10-6 CFU/g and 71 × 10-6 CFU/g, respectively. Whereas in case of packed kulfa samples, maximum and minimum recorded bacterial count was 163 × 10-6 CFU/g and 72 × 10-6 CFU/g, respectively. The LM and SEM of the isolated bacteria were also performed for correct identification. Results indicated that the total bacterial count recorded in the samples exceeded the standard tolerable range which can lead to serious health damage of consumers.

Keywords: CFU/g; bacterial colonies; bacterial count; kulfa; packed ice cream.

MeSH terms

  • Bacteria / growth & development*
  • Bacteria / isolation & purification
  • Bacteria / ultrastructure
  • Colony Count, Microbial
  • Food Contamination / analysis
  • Frozen Foods / microbiology*
  • Ice Cream / microbiology*