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Evaluation of cleaning and washing processes for cotton fiber: Part VII. Microbiological evaluation.

Authors
Fischer-JJ
Source
Tex Res J 1980 Feb; 50(2):93-95
NIOSHTIC No.
00093644
Abstract
Various cleaning and washing processes were evaluated for reducing the bacterial and endotoxin content of cotton fiber. Studies were made on the cotton after treatment and blending, prior to carding, and on the airborne dust when the cotton was carded. Washing alone had the same decontamination effects as combined washing and steaming. Washing at 82 degrees C was more effective than washing at 60 degrees C. Alkaline scour at 71 degrees C and steaming were better than only washing at 60 degrees C. The levels of gram negative microorganisms in airborne dusts and raw cotton decreased by about 1 log after precleaning; these microorganisms in airborne dusts decreased another log after washing, and another 2 logs in raw cotton after washing. An additional log decrease occurred after steaming and washing plus hot alkaline scour. Endotoxin levels dropped about 3 logs in raw cotton and about 1 to 1.5 logs in airborne dust after washing. The author concludes that precleaning, washing, steaming plus washing, and steaming plus hot alkaline scour produce significant decreases in the gram negative organism counts and the endotoxin content of the cotton and of the airborne dusts.
Keywords
NIOSH-Publication; NIOSH-Grant; Control-technology; Cotton-fibers; Cotton-dust; Industrial-processes; Cotton-mills; Thermal-effects; Analytical-methods; Allergenic-dusts; Toxic-substances; Air-contamination; Work-environment; Textile-workers
Contact
Textile Materials & Management North Carolina State Univ Post Office Box 5006 Raleigh, N C 27607
CODEN
TRJOA9
Publication Date
19800201
Document Type
Journal Article
Funding Amount
358616
Funding Type
Grant
Fiscal Year
1980
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-00744
Issue of Publication
2
ISSN
0040-5175
Priority Area
Control-technology
Source Name
Textile Research Journal
State
NC
Performing Organization
North Carolina State University Raleigh, Raleigh, North Carolina
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