Research methodology
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Dr Praveen Rahi discussing about his research on different kinds of bacteria found on smartphones

Extensive research methodology

Spurred by results of the microbial community regarding presence of harmful bacterial and fungal presence on the ubiquitous personal device “smartphone” (perhaps you are reading this on a smartphone), researchers from NCCS, Dr Yogesh Shouche, Dr Praveen Rahi and accompanying team members set out to research further on the following:

Research steps

The research work had five stages:

  1. Collection of samples from 27 individuals
  2. Isolation of colonies to acquire pure cultures
  3. Characterization by Spectrometry using Matrix-assisted laser desorption ionization time of flight (MALDI-TOF) mass spectrometry
  4. Sequencing
  5. Data analysis
Moistened sterilised swabs used to extract microbes from screens of cell phones
Actively grown bacteria from smartphones made as a thin film on a MALDI target plate for analysis
Research work on smartphone bacteria and fungi

The deep research work they undertook for the next 3 years with agar plates, appropriate media, microbial cultures, Autoflex speed system and advanced spectrometry equipment culminated in a startling discovery of harmful presence of bacterial & fungal growth , new bacterial content unknown to the scientific community and most importantly the conclusion: Cell phone sanitizers are definitely a daily essential gadget for maintaining the health of individuals owning it.


However UV phone sanitizers available in the market had limitiations. This was the starting point of the development of Mobioclean: best cell phone sanitizer, as an interaction between NCCS team members and Svanetr Innovation Pvt Ltd’s team. Today, post Feb 2020, the research work carried out from 2014 till 2018 is even more relevant that people realise that cell phone sanitizers are a must have essential gadget post lockdown.

Smartphone Microbial biomass mixed with ethanol centrifuges @ 10000 rpm for preparation of MALDI analysis
Autoflex speed system being used to analyze smartphone germ samples
Microscopic observation of mycelial fungi found on smartphone samples to record their microscopic features