A Multipurpose Fruit and Vegetable Processing System for Advanced Life Support

Metadata Updated: May 2, 2019

During the one-year no-cost extension, we completed the fabrication of the multipurpose fruit and vegetable food processor (MFVP) and the remaining trials with its components. In addition, we conducted a comprehensive study to obtain data on using electrolyzed water for cleaning-in-place (CIP) of the MFVP. CIP with electrolyzed water is an attractive option for cleaning as it does not require detergents (caustic solution) or disinfectants (chlorine). Therefore it could be more suitable for application in a controlled environment system. Electrolyzed water is generated from salt mixed in water. We conducted trials with a stainless steel test-bed containing various components used in the MFVP. The cleaning and disinfection of the components after inoculation was validated with microbial testing. Specifically, the effectiveness of electrolyzed oxidizing water (EOW) and electrolyzed reducing water (ERW) used in clean-in-place (CIP) applications for MFVP were studied using 38 mm (1.5 in) diameter stainless steel (SS316L) pipes fouled with apple juice. Data were compared with industrial CIP cleaner (chlorinated NaOH) and antimicrobial solution (mixture of peroxyacetic acid and hydrogen peroxide). Cleanliness of stainless steel (SS) pipe surfaces was quantified by a hygiene monitoring test and aerobic plate count. Data were obtained to determine the removal of organic debris and microorganisms at 5, 10, 15, and 20 min washing using electrolyzed water and industrial cleaning chemicals. Electrolyzed water showed potential use in CIP applications--it is easy to use and less hazardous compared to the industrial cleaning chemicals. Microbiological evaluation showed 5 min cleaning with EOW followed by 5 min cleaning with ERW was sufficient to drop cell levels from 5.2[HTML_REMOVED]0.3 log CFU (colony forming units)/stainless steel chip to below the limit of detection ([HTML_REMOVED]0.69 log CFU/cm2). In contrast, in case of bioluminescence tests, there were detectable adenosine triphosphate (ATP) even after 15 min of cleaning, even though the system was microbiologically at below detection. Furthermore, bioluminescence tests revealed that industrial cleaning chemicals were faster in cleaning compared to electrolyzed water. Electrolyzed water needs to be circulated more than 20 min at 0.6 m/s (2 ft/s) flow velocity to achieve acceptable cleaning, whereas industrial cleaning takes only 5 min of circulation for acceptable cleaning based on the bioluminescence readings.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Dates

Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_23598
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id 5bfe8baf-4423-459c-86b1-3708e00aab38
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2007-01-01
Homepage URL https://techport.nasa.gov/view/23598
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 18520b5b5e66692dff180138f7fe28f6f51de540
Source Schema Version 1.1

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