The ICAR-Central Institute of Post-Harvest Engineering and Technology, Ludhiana, Punjab has developed a smart, compact and Portable Smart UV-C Disinfection System (named UViC) that is useful in fighting against the COVID-19 Pandemic.
The UViC is capable to disinfect the personal items and office stationery, papers, files and similar items for reducing the risk of infection among people. Unlike chemical sanitizers, UV-C does not leave a residue and does not require extensive safety equipments. It works as a mode of surface sterilization by destroying the nucleic acid and disrupting the DNA of micro-organisms.
The working capacity of the unit in terms of the total surface area of the objects to be treated / exposed is 25 × 25 cm2. The estimated cost of the unit is approximately Rs. 1,500. However, the system can be scaled up as per the need.
The Features of the Portable Smart Ultraviolet-C Disinfection System (UViC):
- The portable system is made of food-grade stainless steel coated with reflective material on the inner surfaces.
- The LCD can prompt the user to operate the system.
- The system can be used in two modes
- For lightweight removable objects: A drawer arrangement for placing objects, for example, purse, wallets, phones, currency notes, papers, packed groceries, files and masks, etc.
- For items which are fixed on surfaces: A hood-shaped arrangement that can be placed on fixed items.
- The alarm beeps after a minimum of six minutes of treatment time and a message for completion of the disinfection process is displayed on the LCD.
- After the completion of irradiation / treatment, switch-off the UV-C light button and open the drawer to remove the objects. It is advisable to flip (top becomes bottom) the object and irradiate it.
- The users should avoid direct exposure of UV-C radiation on body parts, especially eyes.
The system has been tested for inactivation of Escherichia coli as classic examples of gram-negative bacteria. In this experiment, E. coli was spread on LB agar plates and half portion of each plate was exposed to UV-C radiation. The influence of the treatment parameter, that is, the time has been investigated on E. coli. Findings indicated that no visible E. coli colonies were observed after six minutes of continuous UV-C exposure.
ICAR-CIPHET has granted a licence of this technology to M/s Sakhi Soaps Hindustan Soaps and Salts Company, Prakasam, Andhra Pradesh on 18.05.2020
The cost-effective system has been designed and developed by Dr. K. Narsaiah, Dr. Bhupendra M. Ghodki, Er. Yogesh Kalnar and Ms. Surya Tushir led by Dr. R.K. Singh, Director, ICAR-CIPHET, Ludhiana, Punjab.
(Source: ICAR-Central Institute of Post-Harvest Engineering and Technology, Ludhiana, Punjab)